Antinutritional Factors Research Articles

A Descriptive Analysis of the Nutraceutical Constituents, Extraction Techniques, and Possible Health Benefits of Tamarind

Background: Tamarind is a multifunctional tree, with nearly every portion having significant nutritional or therapeutic use. The fruit, which produces acidic pulp, is the most valuable and often utilized portion. Objective: The aim of this paper is to discuss the distribution, habitat, chemical constituents and extraction techniques of tamarind. Methods: This study reviews the chemical constituents, health benefits and extraction techniques of tamarind. Databases such as PubMed, Scopus, Science Direct, and Google Scholar were used to search articles from 1990 to 2022. The key search terms included tamarind, phytoconstituents extraction and anti-nutritional factor. Research studies also included similar plant parts extracted from similar solvents which were considered in this review. Results: According to our observations, Tamarindus indica is a crucial plant with significant pharmacological properties. It is extensively used as a conventional medicine to treat a variety of disorders; however, its active ingredients require further investigation for future drug development and pharmacological activity. Tamarind contains a diverse range of bioactive compounds, including polyphenols, flavonoids, alkaloids, vitamins, and minerals, which have been associated with various health-promoting properties. The study examines different extraction methods used to isolate tamarind's bioactive constituents, such as solvent extraction, supercritical fluid extraction (SFE), and microwave-assisted extraction (MAE). Furthermore, the research highlights the potential health benefits of tamarind, including antioxidant activity, anti-inflammatory effects, gastrointestinal support, cardiovascular benefits, and antimicrobial properties. Discussion: Tamarind includes citric acid, linoleic acid, volatile oils, vitamin C, potassium, Camp sterol, -amyrin, Tannins, saponins, and glycosides as a result of this. It has several pharmacological properties such as reducing swelling, preventing oxidation, hypolipidemic, weight loss, antibacterial, hepatoprotective, anthelmintic, and painkiller properties. These properties will assist to generate interest in Tamarind and develop novel preparations with more medicinal and commercial potential. The findings indicate that tamarind holds significant promise as a natural resource for developing functional foods, nutraceuticals, and pharmaceuticals with potential positive impacts on human health.

Influence of fermentation period on the chemical and functional properties, antinutritional factors, and in vitro digestibility of white lima beans flour.

This study evaluated the variation in chemical and functional properties, antinutritional factors, and in vitro digestibility during the natural fermentation of white lima bean (Phaseolus lunatus) at different fermentation periods of 0, 24, 48, 72, and 96h using standard methods. The results showed that an increase in the fermentation period resulted in a significant (p<0.05) increase in protein and ash content, while fiber and fat content decreased with the length of fermentation. Also, there was an optimum increase by 92%, 56.39%, and 58.16% in β-carotene, vitamin B2, and vitamin B3 at 24h fermentation. Results showed that the fermentation period increased the mineral composition except for sodium which had a slight reduction though no significant (p<0.05) difference was observed in the fermented samples. The antinutritional factors decreased linearly as fermentation progresses from 19.05-13.26mg/100g, 35.29-19.05mg/100g, 18.00-7.15mg/100g, and 3.09-1.35mg/100g for phytate, tannins, alkaloids, and oxalate, respectively. Fermentation significantly decreased the bulk densities, and swelling index, while water and oil absorption capacity, foaming properties, and emulsion capacities increased as fermentation progresses. Furthermore, protein digestibility improved from 50.33% to 58.50% and the glycemic index (GI) increased significantly (p<0.05) with GI values of 57.18, 62.36, 62.67, and 62.82 for 24, 48, 72, and 96h, respectively. This implies that these are all intermediate GI foods. This study showed that fermentation periods influence the quality of lima beans and this can be used to improve nutrition especially in the rural communities and find applications in food product development. PRACTICAL APPLICATION: Lima beans are underutilized crops in comparison with other legumes. This is attributed to problems associated with digestion on consumption and its long hours in cooking described as "hard to cook" phenomenon which is reported to be attributed to the presence of significant amount of antinutrients such as tannins and phytates. The nutritional value of lima beans will be increased, along with their acceptance and consumption as food, by the reduction or inactivation of these antinutritional factors.

The Biotechnological Potential of Crickets as a Sustainable Protein Source for Fishmeal Replacement in Aquafeed.

As aquaculture production grows, so does the demand for quality and cost-effective protein sources. The cost of fishmeal (FM) has increased over the years, leading to increased production costs for formulated aquafeed. Soybean meal (SBM) is commonly used as an FM replacer in aquafeed, but anti-nutritional factors could affect the growth, nutrition, and health of aquatic organisms. Cricket meal (CM) is an alternative source with a nutrient profile comparable to FM due to its high protein content, digestibility, and amino acid profile. CM use in aquafeed influences growth and reproductive performance while modulating the gut microbiota and immune response of fish and shrimp. However, consistent regulation and scaling up are necessary for competitive prices and the marketing of CM. Moreover, the chitin content in CM could be an issue in some fish species; however, different strategies based on food biotechnology can improve the protein quality for its safe use in aquafeed.

Effect of electro-stimulated Bacillus subtilis and Lactobacillus casei on ensiling quality, anti-nutrients, and bacterial community of mulberry leaf silage.

There are few studies on the effects of electrically stimulated bacteria on anti-nutritional factors and microbial communities in mulberry leaf silage. This study aimed to examine the impact of the combined use of electrically stimulated Bacillus subtilis (EB) and Lactobacillus casei (LC) on the quality and degradation of anti-nutritional factors in mulberry leaf silage. The results revealed that the synergistic effect of EB and LC significantly enhanced the nutritional value of mulberry leaves, as evidenced by the promotion of lactic acid synthesis, the reduction of anti-nutritional factors, and the augmentation of lactic acid bacteria following a 60-day silage period. Moreover, the EB + LC co-inoculation resulted in the highest quality of mulberry leaf silage, with the degradation rates of tannin and phytic acid at 38.8% and 47.1%, respectively. The combination of EB + LC also enhanced lactic acid content, along with significant reductions in ammonia nitrogen (NH3-N), soluble protein, and non-protein nitrogen (NPN) (P < 0.05). Spearman correlation analysis showed that Lactobacillus in the silage was significantly positively correlated with crude protein (CP) and lactic acid, while negatively correlated with water-soluble carbohydrates, pH and NPN (P < 0.05). In contrast, Weissella was significantly negatively correlated with CP and lactic acid. This study represents a pioneering application of electro-stimulation in the field of feed silage, offering a scientifically substantiated approach to degrading anti-nutritional factors in mulberry leaves for livestock feeding. © 2024 Society of Chemical Industry.

Phytochemical screening, nutritional, antinutritional, antioxidant, GCMS and mineral analysis of Zanthoxylum rhetsa (Roxb.) DC: Insights from tribal consumption in Mizoram, Northeast India

The plant Zanthoxylum rhetsa Roxb, a member of the Rutaceae family, holds dual significance in certain communities, particularly in Mizoram, Northeast India, where it is valued for its medicinal properties and consumed as a vegetable. This study comprehensively analyzes the phytochemical, nutritional, antinutritional, and antioxidant properties and the mineral content of Z. rhetsa, a plant traditionally consumed by tribal communities in this region. Minerals such as aluminum, copper, iron, manganese, nickel, and zinc were measured using Atomic Absorption Spectroscopy (AAS). Gas Chromatography-Mass Spectrometry (GC-MS) analysis was conducted to determine the chemical composition of the samples. Phytochemical screening revealed the existence of several bioactive components, such as tannins and flavonoids, while nutritional studies validated the plant's abundance of key nutrients. Among the minerals, manganese was found in the highest concentration (481.356 mg/100 g of DW), while nickel was present in the lowest concentration (1.614 mg/100 g of DW). The total calorific content was ascertained to be 51.344 Kcal/100g, adequate for dietary requirements. Additionally, the total phenolic content measured was 8.28 mg/g in gallic acid equivalent, and the total flavonoid content was 43.04 mg/g in quercetin equivalents. The existence of antinutritional compounds in differing amounts necessitates meticulous evaluation, particularly with the intake of fruits that may possess elevated levels of these substances. This comprehensive assessment highlights the nutritional significance of Z. rhetsa in local diets, emphasizing its dual role as a source of beneficial nutrients and potential antinutritional factors.

Breeding and biotechnology approaches to enhance the nutritional quality of rapeseed byproducts for sustainable alternative protein sources- a critical review.

Global protein consumption is increasing exponentially, which requires efficient identification of potential, healthy, and simple protein sources to fulfil the demands. The existing sources of animal proteins are high in fat and low in fiber composition, which might cause serious health risks when consumed regularly. Moreover, protein production from animal sources can negatively affect the environment, as it often requires more energy and natural resources and contributes to greenhouse gas emissions. Thus, finding alternative plant-based protein sources becomes indispensable. Rapeseed is an important oilseed crop and the world's third leading oil source. Rapeseed byproducts, such as seed cakes or meals, are considered the best alternative protein source after soybean owing to their promising protein profile (30%-60% crude protein) to supplement dietary requirements. After oil extraction, these rapeseed byproducts can be utilized as food for human consumption and animal feed. However, anti-nutritional factors (ANFs) like glucosinolates, phytic acid, tannins, and sinapines make them unsuitable for direct consumption. Techniques like microbial fermentation, advanced breeding, and genome editing can improve protein quality, reduce ANFs in rapeseed byproducts, and facilitate their usage in the food and feed industry. This review summarizes these approaches and offers the best bio-nutrition breakthroughs to develop nutrient-rich rapeseed byproducts as plant-based protein sources.

TLR2/TLR5 Signaling and Gut Microbiota Mediate Soybean-Meal-Induced Enteritis and Declined Growth and Antioxidant Capabilities in Large Yellow Croaker (Larimichthys crocea)

Soybean meal, renowned for its high yield, cost efficiency, and protein richness, serves as a pivotal plant-based alternative to fish meal. However, high soybean meal inclusion in Larimichthys crocea diets is linked to enteritis and oxidative damage, with unknown mechanisms. Our study aims to elucidate the molecular basis of soybean-meal-induced enteritis and its impact on intestinal microbiota in L. crocea. To this end, four isonitrogenous and isolipidic diets with varying soybean meal levels (0% FM, 15% SBM15, 30% SBM30, and 45% SBM45) were administered to L. crocea for 8 weeks. The results indicated that the SBM30 and SBM45 treatments significantly hindered fish growth, digestive efficiency, and protein utilization. Furthermore, high soybean meal levels (SBM30 and SBM45) activated intestinal Toll-like receptors (TLR2A, TLR2B, TLR5, and TLR22), stimulating C-Rel and mTOR protein expression and elevating ERK phosphorylation. This led to increased pro-inflammatory cytokine production (IL-1β, IL-6, and TNF-α) and decreased anti-inflammatory cytokine expression (IL-4/13A, IL-4/13B, and TGF-β), suggesting a potential signaling pathway for soybean-meal-induced enteritis. Furthermore, enteritis induced by high soybean meal levels led to oxidative damage, evident from increased MDA levels and decreased antioxidant enzyme activities (SOD and CAT). The SBM30 and SBM45 treatments increased Firmicutes and Bacteroidetes abundance in fish gut microbiota, while Proteobacteria abundance decreased. This microbiota shift may enhance soybean meal nutrient utilization, yet high soybean meal concentrations still impair growth. A soybean-meal-rich diet promotes harmful bacteria like Rhodococcus and depletes probiotics like Ralstonia, increasing disease risks. L. crocea has limited tolerance for soybean meal, necessitating advanced processing to mitigate anti-nutritional factors. Ultimately, exploring alternative protein sources beyond soybean meal for fish meal replacement is optimal for L. crocea.

Untargeted metabolomics and PacBio analysis on bioactive components and microbial community in co-fermentation of black soldier fly larva

Fermentation can enhance nutritional value and safety of insect protein, this study utilized probiotic Bacillus subtilis (B. subtilis) and complex enzyme containing chitinase and protease to ferment the paste of Black Soldier Fly larva (BSFL), decomposing anti-nutritional factor chitin and protein in paste while inhibiting the proliferation of harmful microorganisms. The result indicated a 40 % degradation of chitin after fermentation, accompanied by an increase in the variety and quantity of amino acids and peptides, functional substances such as raffinose and cucurbitacin significantly increased, while the levels of antibiotics such as erythromycin and ofloxacin had decreased; after fermentation, there is a significant difference in the microbial distribution between bacteria, co-fermentation and CK, the indigenous microbiota of BSF and pathogenic bacteria such as Klebsiella pneumoniae and Clostridiaceae bacteria were significantly inhibited, anaerobic bacteria, including Anaerosalibacter, Caldicoprobacter and Tissierella, exhibit a marked increase; significant changes are detected in the carbon sources, amino acids, and key enzymes related to other metabolic pathways of B. subtilis during the fermentation process. Overall, we have developed a method for fermenting BSFL paste, aiming at enhance its probiotic properties, nutritional value, and safety. This study provided groundwork for utilizing fermented insects as a novel protein source for food and fodder.

Growth, physiological responses, and meat quality of feedlot-finished Bonsmara steers offered unprocessed Mucuna pruriens utilis seed meal with or without conventional and green zinc oxide nanoparticles

Feedlot finishing of beef cattle on commercial nutrient-dense diets based on expensive corn (maize), soybean meal (SBM) and other commonly used protein-rich ingredients is economically unsustainable, especially for smallholder farmers. Rich in energy and proteins, Mucuna pruriens utilis seed meal (MSM) could replace corn and protein-rich ingredients in beef cattle diets provided its problems of antinutritional factors (ANFs) and high fiber content that compromise animal growth performance are resolved. The objective of this study was, therefore, to investigate the effects of incorporation of conventional (C-Nano-ZnO) versus green (G-Nano-ZnO) zinc oxide (ZnO) nanoparticles in the diets of feedlot-finished Bonsmara steers supplemented with 20% MSM (dry matter basis). In a completely randomized design, 28 Bonsmara steers were randomly allocated to 4 experimental diets [i.e., Control diet without MSM (C); C with 20% MSM replacing corn (partially) and the common protein-rich ingredients (CM); CM with 25 mg/kg C-Nano-ZnO (CM-C); and CM with 25 mg/kg G-Nano-ZnO (CM-G)] each with seven replicates for 98 days. Performance variables, carcass traits, hemato-biochemistry, and meat quality were then measured. All data were analyzed with SAS using one-way ANOVA applying the GLM procedure, with diet as the independent variable, except for growth performance data that were analyzed as repeated measures. Results showed that while dietary MSM did not affect (P > 0.05) meat quality and serum biochemistry, it decreased body weight gain (BWG; P < 0.01), feed intake (FI; P = 0.001), feed conversion efficiency (FCE; P < 0.01), carcass fatness (P = 0.05), hot carcass weight (HCW; P < 0.05), cold carcass weight (CCW; P = 0.05), blood MCV (P < 0.05), MCH (P < 0.01), and neutrophils (P < 0.01) as it increased blood lymphocytes (P < 0.001). Interestingly, the harmful effects of MSM were attenuated by C-Nano-ZnO and worsened by G-Nano-ZnO. In conclusion, feeding of high dietary unprocessed MSM did not affect Bonsmara beef meat quality and serum biochemistry but compromised their growth performance, carcass traits, and some hematology responses, and these were alleviated by C-Nano-ZnO and deteriorated by G-Nano-ZnO incorporation. We recommend feeding commercial diets supplemented with 20% MSM, replacing corn and commonly used protein-rich ingredients, plus 25 mg/kg of C-Nano-ZnO to feedlot-finishing beef cattle.

Effect of Processed Coffee Husk on Feed Intake, Nutrient Digestibility, Body Weight Changes and Economic Feasibility of Bonga Sheep Fed on Natural Pasture Hay as a Basal Diet.

Ethiopia is one of the world's coffee producers, generating about 192,000 metric tonnes of coffee husks annually as by-products. The material can be used for ruminant diets to improve the nutrient utilisation of animals. However, coffee husk has toxic compounds, which can be minimised through different processing methods. Though the above techniques can minimise the toxicity level of coffee husk and increase the bioavailability of nutrients, there is scanty information on the comparative efficacy of these techniques, especially in ruminant nutrition. The study was conducted to examine the effect of processed coffee husk on feed intake, nutrient digestibility, body weight changes and profitability of Bonga rams based on natural pasture hay. In the experiment, 24 rams were used, and the rams were grouped into six blocks based on initial body weight (mean BW 21.5 ± 1.01kg). The rams were quarantined for 21 days, and each ram was randomly assigned to one of the experimental feed treatments in a randomised complete block design (RCBD). The experimental treatment feeds include 400g conventional concentrate mix (CM) containing Noug seed cake and wheat bran (T1); 200g boiled coffee husk + 200g CM (T2); 200g roasted coffee husk + 200g CM (T3) and 200g raw coffee husk + 200g CM (T4). The CM was made in the ratio of 1:1. The data collected from the 90-day experimental period were: dry matter and nutrient intakes, initial body weight, final body weight and body weight changes. After the growth experiment, a 7-day digestibility trial was followed by collecting faeces using a harness bag. The data were managed using Microsoft (MS) Excel 2010 and analysed using R software (v. 4.3.2). The chemical compositions of the CM had maximum crude protein (22%), followed by boiled coffee husk (14.74%), which was higher than natural pasture hay (6.91%) and raw coffee husk (12.4%). The total dry matter intake (p < 0.05), metabolisable energy, and total nutrient intakes of rams were significantly (p < 0.001) maximised when rams fed on boiled coffee husk (T2) than raw (T4) and roasted (T4) coffee husk, except for NDF and organic matter intakes. The apparent digestibility of nutrients and feed conversion efficiency were maximised for rams assigned to T2. There was maximum daily body weight gain (p < 0.001) when rams were supplemented with boiled coffee husk (T2). Also, body weight changes of rams were significantly (p < 0.001) higher for rams supplementation with boiled coffee husk. Therefore, the boiled coffee husk as an alternative feed resource can be replaced by about half of the commercial CM without adverse effects of anti-nutritional factors and enhance the income of smallholder farmers in the coffee crop-livestock production system.

Degradation of Anti-Nutritional Factors in Maize Gluten Feed by Fermentation with Bacillus subtilis: A Focused Study on Optimizing Fermentation Conditions

Degradation of Anti-Nutritional Factors in Maize Gluten Feed by Fermentation with Bacillus subtilis: A Focused Study on Optimizing Fermentation Conditions

Hays of Novel-Improved Legume Cultivars: Phytochemical Content and Nutritional Value.

The imperative need to produce safe foodstuffs using environmentally sustainable practices has highlighted the incorporation of legumes in human and animal diets as an emerging nutritional staple. Since legumes comprise a family of plants known to display an extensive agricultural diversity with significant bioactivities, we report herein the exploitation outcome of the nutritional and bio-functional content of hay, derived from the post-harvest aerial parts of eight novel-improved Greek cultivars belonging to the following six taxa: Larthyrus sativus L., Medicago sativa L., Cicer arietinum L., Pisum sativum L., Vicia faba L., and Phaseolus vulgaris L. In specific, the phytochemical content of their hay extracts was screened against the presence of 37 fatty acids and 67 polyphenols using, respectively, GC-FID and LC-MS/MS instruments, while the determination of their total phenolic and tannin contents was achieved with spectrophotometric methods. In this respect, the presence of 26 different fatty acids was detected of which the acids linoleic, linolenic and palmitic were traced in all extracts in concentrations exceeding the 10 mg/g, while the oleic acid was determined as the major component of C. arietinum (77.58 mg/g), V. faba (36.11 mg/g), and L. sativus (12.89 mg/g) extracts. In addition, 30 different phenolics were traced as extracts' components with the most abundant the molecule of isoquercetin, which was present in six extracts and isoliquiritigenin, calycosin, and chlorogenic acid which were detected in five extracts. Finally, the antioxidant properties of the extracts were evaluated by performing both DPPH• and FRAP assays, which highlighted the V. faba extract as the most potent in both tests, followed by the extracts of P. sativum and P. vulgaris. Results herein are indicative of the significant advances achieved, for the improvement of investigated plant cultivars with respect to their utilization as nutritional crops, since these novel cultivars hays have been found to contain significant amounts of essential nutrients in the form of fatty acids along with bioactive ingredients in the form of polyphenols, while simultaneously they were determined as deprived of tannins that constitute essential anti-nutritional factors.

Canning Quality Evaluation of Recently Released Ethiopian Chickpea Varieties

Chickpea’s protein quality is better than other legumes. it has low levels of anti-nutritional factors and it is rich in some minerals and vitamins (thiamine and niacin). However, dried chickpea is needing prolonged cooking time. Owing to the need for more adequate alternatives to fulfill the demands of chickpea consumers in Ethiopia and other countries, adding value to the food via industrial processing and offering semi-prepared foods of high nutritional quality, sensory value and reduced cooking times is necessary. Hence, the aims of this study were to evaluate canning quality of Ethiopian chickpea varieties. Three kabuli Chickpea types and one desi type were used for this experiment. Three cooking temperatures (70, 80, and 90°C) were used. Cooking time, techno-functional, Canning quality of chickpeas, and Sensory evaluation of canned chickpeas were analyzed. The least significant difference (LSD) between the mean was reported at a significant level, p ≤ 0.05. The result indicates that Arerti variety cooked at 70 and 80°C had a maximum average of PWDWT, seed shape, splits, and degree of clumps. The maximum average of overall acceptability was observed from the Arerti variety followed by the koka variety. Finally, the canning quality evaluation results revealed that Arerti variety was suitable for canning, and has the potential to be used as a raw material for the canning industry.

Antioxidant properties, anti-nutritive and toxic factors of Terminalia sericea in Onderstepoort.

Anti-nutritive and toxic factors in plants adversely affect animal health and production. Hence, the aims of the study were to (1) carry out qualitative and quantitative analysis of these factors inTerminalia sericeathat grows abundantly in Onderstepoort; (2) evaluate an affordable, efficient and reliable method that reduces these factors and (3) evaluate antioxidant properties of the phenolic compounds. Thus, sequential organic and aqueous extractions were carried out onT. sericealeaves and feed pellets. Extracts were subjected to qualitative analysis to confirm the presence of 11 phytochemicals. While quantitative analysis of nine phytochemicals was carried out on spectrophotometry, the phenolic extracts were further tested for antioxidant activity on 2,2-diphenyl-picrylhydrazyl (DPPH) assay where gallic acid (GA), quercetin (Q) and ascorbic acid (AA) were used as standards. The contents of GA, Q and AA in the phenolic extracts were determined on high-performance liquid chromatography (HPLC). Aqueous extraction was an effective method as most phytochemicals were extracted. Nine phytochemicals were qualitatively analysed inT. sericea. The highest contents of 1.97% and 2.37 ± 0.077 mg/g gallic acid equivalent with a significant difference (p 0.05) were determined in oxalates and phenolics, respectively. Furthermore, 83.1% DPPH inhibition (IC50= 0.0432 µg/mL) was determined relative to the standards (85.27% - 85.96%; IC50= 0.000009 µg/mL - 0.00042 µg/mL). Subsequently, HPLC results showed thatT. sericeacontained high concentration of AA (62.5 ± 2.13 µg/mL) to confirm antioxidant properties of the leaves.Contribution:ThoughT. sericealeaves have antioxidant activities, the alkaloid contents may pose a threat to the livestock. Therefore, farmers around Onderstepoort should protect their livestock from feeding on these leaves.

Pulses as Sustainable Protein Sources: Benefits, Drawbacks, and Gaps

Abstract: Pulses have redeemed the interest in terms of a sustainable and healthy diet due to their high protein content. Furthermore, the vitamins, minerals, and phytochemicals they contain also make them more valuable nutritionally. A sustainable diet should improve public health and food security and has a low environmental footprint. Pulses have been considered one of the emerging plant food proteins. Although they have beneficial components such as vitamins, minerals, phytochemicals, and antioxidants, many drawbacks limit their use to consumers and the food industry. One of the drawbacks is their incomplete proteins due to the lack of sulfur-containing amino acids in their protein profile. Furthermore, the protein digestibility of pulses is low due to the antinutritional compounds they contain. The other drawback of pulses is their beany flavor and bitter taste that limits the acceptability of consumers. From the consumer's point of view, the other disadvantage is the laborious and timeconsuming preparation period. : This article provides a concise overview of the current state of knowledge on pulses as sustainable protein sources, underlining the gaps that limit their extensive application in the food industry. Based on the available scientific facts on pulses, finding an efficient method for removing beany flavor and overall sensorial acceptability and antinutritional factors, thus increasing protein digestibility is crucial. The most promising option to increase pulse protein digestibility seems to combine conventional and novel technologies that can modulate digestibility by different mechanisms, such as the removal of antinutritional factors, protein denaturation, and the design of the food matrix.

Growth performances of Clarias gariepinus juveniles fed with Jatropha curcas seed meal

Jatropha curcas is an oil producing seed with high nutritional qualities for consumption. However, due to inherent anti-nutritional factors, appropriate processing is necessary to improve its nutrients utilization. This study was aimed at processing J. curcas using solvent-extraction method and evaluating its inclusion effects in the diet for Clarias gariepinus on its growth status. J. curcas meal was extracted using 80 % methanol to remove phorbol esters and other anti-nutrients. Thereafter, five iso-nitrogenous diets (40 % crude protein) were formulated containing J. curcas meal replacements of soybeans meal at 0 % (TRT0), 25 % (TRT25), 50 % (TRT50), 75 % (TRT75) and 100 % (TRT100) and fed to C. gariepinus for 70 days. Results showed that TRT25 fish had the highest mean weight gain and specific growth. The serum alkaline phosphate, alanine aminotransferase, and aspartate aminotransferase levels began to rise significantly (p ≤ 0.05) at 50 % replacement. Likewise, the assessment of gut ecology and morphology indicated that TRT25 had significantly (p ≤ 0.05) the highest gut bacteria colony forming unit (2.60 ×104±0.02cfu/g) and most favorable area of absorption (0.16±0.01 cm2). The histopathological observation of the fish intestine, liver and gills indicated no visible deformity in TRT0 and TRT25 fish. However, various degrees of degenerations were observed in the fish fed with 50 % and higher inclusion of J. curcas. This study showed that methanol-extracted J. curcas meal can be effectively utilized for C. gariepinus at 25 % of replacement.

ANPS: machine learning based server for identification of anti-nutritional proteins in plants.

Anti-nutrient factors are inherently present in almost all major crops, which impede the absorption of crucial vitamins and minerals upon human consumption. The commonly found anti-nutrients in food crops are saponins, tannins, lectins, and phytates etc. Currently, there is a lack of computational server for identification of proteins that encode for anti-nutritional factors in plants. Consequently, this study represents a computational approach aimed at distinguishing between proteins encoding anti-nutritional factors and those providing essential nutrients. In this work, machine learning algorithms have been employed to identify plant specific anti-nutrient factor proteins from protein sequences by using compositional features. Achieving a five-fold cross-validation training performance of 94.34% AUC-ROC and 94.13% AUC-PR with extreme gradient boosting surpasses the performance of other methods such as support vector machine, random forest, and adaptive boosting. These results suggest the proposed approach is highly reliable in predicting plant-specific anti-nutritional factor proteins. The resulting prediction models have led to the development of an online server named ANPS, freely available at https://nipb-bi.icar.gov.in .

Advancements in synergistic fermentation of probiotics and enzymes for non‐grain feed raw materials

AbstractTo address the escalating challenge of food scarcity and the associated conflicts between human and animal consumption, it is imperative to seek alternative resources that can substitute for traditional feed. Non‐grain feed (NGF) raw materials represent a category of biomass resources that are distinct from grains in their composition. These materials are characterized by their high nutritional content, cost‐effectiveness, ample availability, and consistent supply, which contribute to their significant economic potential. Nonetheless, the extensive application of NGF is currently hindered by several limitations, including a high concentration of antinutritional factors, suboptimal palatability, and an offensive odor, among other shortcomings. The synergistic fermentation of probiotics and enzymes (SFPE) is an innovative approach that integrates the use of a diverse array of enzymes during the feed fermentation process, as well as various strains of probiotics throughout the feed digestion process. This method aims to enhance the nutritional value of the feed, diminish the presence of antinutritional factors, and improve the overall palatability, thereby facilitating the optimal utilization of NGF. This strategy holds the promise of not only replacing conventional feed options but also mitigating the pressing issue of grain scarcity. This paper delves into the practical applications of NGF and presents an overview of the latest research advancements in SFPE fermentation techniques, which can provide cutting‐edge and valuable reference for researchers who devote themselves to research in this field in the future.

Whole-genome sequencing and assessment of a novel protein- and gossypol-degrading Bacillus subtilis strain isolated from intestinal digesta of Tibetan Pigs

BackgroundWith the rapid development of animal husbandry, the demand for protein feed resources is increasing. Cottonseed meal (CSM) and soybean meal (SBM) are rich sources of protein. However, their application is limited due to the existence of anti-nutrients, which can be harmful to the digestion and absorption. A strain of Bacillus subtilis (Mafic-Y7) was isolated from digesta of intestines of Tibetan pigs. The strain showed high protease activity, which helps in degrading proteinic anti-nutritional factors in grain meal and in vitro degradation of free gossypol. In order to better understand this isolated strain, whole genome of Mafic-Y7 strain was sequenced and analyzed. Different effects on various grain meals were identified.ResultThe GC-depth Poisson distributions showed no bias suggesting high-quality genome assembly of Mafic-Y7. The whole genome sequencing showed that one chromosome with 4,248,845 base pairs(bp)and the genes total length with 3,736,524 bp was predicted in Mafic-Y7. Additionally, Mafic-Y7 possessed 4,254 protein-coding genes, and several protease genes were annotated by aligning them with databases. There are 55 protease genes, one phytase gene and one laccase gene were annotated in the gene sequence of Mafic-Y7. The average nucleotide identity between Mafic-Y7 and the GCA-000009045.1 homologous genome was 0.9938, suggesting a close genetic relationship between them at the species level. Compared with the closest four whole genomes, Mafic-Y7 was annotated the most abundant of protease genes (55 genes). The fermentation supernatant of Mafic-Y7 could increase the content of small peptides, water-soluble proteins, and acid-soluble proteins in vitro by 411%, 281% and 317% in SBM and 420%, 257% and 338% in CSM. After fermentation in grain meal by Mafic-Y7, the degradation rate of anti-nutritional factors in SBM, such as trypsin inhibitor, glycinin, and β-conglycinin was greater than 70%, and lectin was greater than 30%. The degradation rates of anti-nutritional factors in CSM, such as gossypol and phytic acid, were 82% and 26%, respectively.

Comparative study of physico-chemical composition, functional, morphological and pasting properties of major and minor millet flours as a gluten free alternative to wheat flour

The present study compares the major (finger, sorghum, pearl) and minor millet flours (barnyard, foxtail, kodo, little, proso) with wheat flour for their nutritional (proximate, mineral and polyphenolic content), antinutritional, functional, morphological, and pasting properties. The millet flours protein content varied from 13.71 to 6.39 g/100 g, followed by ash content varied from 2 to 1.02 %, lipid varied from 1.62 to 5.68 %, carbohydrate 67.78–73.70 %, crude fibre 0.92–4.77 g/100 g and moisture 9.45–12.69 % as compared to the wheat flour having 12.07 g/100 g, 1.22 %, 1.67 %, 71.89 %, 2.26 g/100 g and 10.89%, respectively was determined using official protocols of AOAC (Association of official analytical chemists). Calcium was found to be significantly higher in finger millet flour 87.02mg/100 g. Atomic spectrometer, rapid-visco analyser (RVA), fourier transform infra- red spectroscopy (FTIR), scanning electron microscope (SEM) and differential scanning calorimeter (DSC) was used to measure minerals, pasting, functional, morphological and thermal properties respectively. The raw millet flours showed good pasting properties as in barnyard millet flour with 1216 cp peak viscosity and pearl millet flour having 88.05 °C pasting temperature which is approximately similar to the wheat flour used as control. The highest total phenolic content was found to be in finger millet flour i.e. 1318.12 mgGAE/100 g. The antinutritional factors namely tannin and phytic acid was lowest found to be in foxtail millet flour 8.03mg/100 g and 0.37mol g-1. Functional properties such as water holding capacity was found to be good in finger millet flour (3.12 g g-1) and oil holding capacity was good in kodo millet flour (2.50 g g-1), the foaming capacity was good in barnyard (4.11 %) whereas dispersibility was good in little millet flour (85.02 g/ml) compared to wheat flour. The FTIR revealed the presence of amide group and the presence of starch protein complex. The thermal analysis showed the presence of higher amounts of proteins and lipids in the minor millet flours. Significant differences (p ≤ 0.05) were also determined in most of the values of the millet flours. This present work on comparative study would contribute to reduce risk of over-reliance on staple gluten containing cereals, and to formulate and optimize healthy food products of different preferences from the above-mentioned gluten free nutritive flour in combinations or as alone.