Oil Meal Research Articles

Effects of poultry by-product meal and complete replacement of fish oil with alternative oils on growth performance and gut health of rainbow trout (Oncorhynchus mykiss): a FEEDNETICS™ validation study

BackgroundAquaculture, traditionally a form of biotechnology, has evolved to integrate innovative biotechnological applications, such as advanced feed formulations, aimed at improving the growth performance and health of farmed fish species. In the present study, the effects of feeding rainbow trout with novel feed formulations were investigated. Fish growth, gut and liver morphology, the concentration of fatty acids in the fillet, and volatile fatty acids in the gut were assessed. The study also validated scenarios from in vivo experiments using a nutrient-based model called FEEDNETICS™. This globally used model serves as a tool for data interpretation and decision support in the context of precision fish farming.MethodsAlternative protein and oil sources, including poultry by-product meal (PBM) and natural algae oil, were explored as sustainable replacements for fishmeal (FM) and fish oil (FO). A 90-day feeding trial was conducted using rainbow trout, comparing two isoproteic, isolipidic and isoenergetic diets. The control diet contained 15% FM, 5% PBM, and 8% FO, while the test diet replaced FM with 15% PBM and 5% feather meal hydrolysate (FMH), and fully substituted FO with VeraMaris® natural algae oil and rapeseed oil.ResultsPBM successfully replaced FM protein without negatively affecting feed intake, growth performance or feed utilization in trout. The combination of PBM and natural algae oil was well tolerated by the trout and showed no negative effects on gut health. A detailed analysis of fatty acids in the fillet revealed that PUFAs of the n3 and n6 series were significantly higher in the PBM group than in the FM group. Values of fatty acid-related health indexes, including atherogenicity index, and thrombogenicity index, confirmed the high nutritional value of trout filet, thus representing a healthy product for human. In addition, the predictions using the FEEDNETICS™ indicated that the tested novel alternative formulations are economically viable. The validation of the model for fish growth resulted in a Mean Absolute Percentage Error (MAPE) of 8%.ConclusionsThe FEEDNETICS™ application enhances our ability to optimize feeding strategies and improve production efficiency in the aquaculture industry. VeraMaris® algae oil and PBM could serve as viable and sustainable raw materials for fish feed, promoting environmentally friendly aquaculture practices.

Impacts of industrial food wastes on nutritional value of mealworm (Tenebrio molitor) and its gut microbiota community shift

The extensive investigation into the capacity of mealworms to digest diverse food by-products, as well as plastic wastes, has been a focal point in recent years. The transition from traditional diet sources like brans to food wastes has the potential to impact the physiological properties of mealworms. This study explored the utilization of various industrial food wastes such as okara, barley spent grain (BSG), sesame oil meal (SOM), and spent coffee grounds (SCG) as feed alternatives, and reports on their survival rate, biomass variations, and nutritional composition. In additional, the shift in their gut microbiota was also assessed. Among the range of industrial food wastes, mealworms exhibited the most robust growth performance when nourished with BSG. This particular group showed a survival rate of 98.33 % and a biomass increase of 23.06 %. In contrast, mealworms fed with SCG demonstrated the lowest survival rate and experienced a significant reduction in biomass. Although the groups fed with okara and SCG displayed moderate growth performance, both exhibited protein levels comparable to those observed in the oatmeal-fed group (used as the positive control). Notably, the inclusion of BSG in the mealworm diet exhibited the potential to enrich their omega-3 fatty acid content, suggesting potential benefits for applications as animal feed or even human consumption. Furthermore, an analysis of the gut microbiome was conducted to investigate the associations between specific diets and the composition of mealworm gut microbiota. In summary, food wastes such as BSG may be repurposed as feed substrates for mealworms before converting them into an alternative source of protein.

Formulation, Physicochemical, and Sensory Evaluation of Cookies Prepared from Sacha Inchi Oil Meal (SIOM)

Due to its substantial amounts of essential amino acids and protein, sacha inchi oil meal (SIOM) is ideal for producing protein-rich food. This study developed the cookies by blending SIOM with wheat flour at 5, 10, 20, and 30% (w/w), respectively. Physical properties, proximate composition, and sensory study were evaluated on the cookies. Data showed that 10% of wheat flour-SIOM cookies had the highest protein content (13.03%) compared to wheat flour cookies (4.89%). Cookies made with 20 and 30% SIOM were also feasible as the crude fiber content was high (48%). The hardness of wheat flour-SIOM incorporated cookies was lower (2.52–3.22 N) than wheat flour cookies (3.30 N). The water activity value of all the cookie samples during the 30-day storage was less than 0.6, indicating that the product was stable. Sensory analysis showed that the panelists preferred 10% SIOM-blend cookies over commercial cookies because of their better color, sweetness, texture, and appearance. Moreover, the overall acceptability of SIOM cookies was greater than 6 on a 9-point hedonic scale. This study concludes that SIOM can be a functional food ingredient that can help develop healthier bakery products.

Bacillus subtilis SOM8 isolated from sesame oil meal for potential probiotic application in inhibiting human enteropathogens

BackgroundWhile particular strains within the Bacillus species, such as Bacillus subtilis, have been commercially utilised as probiotics, it is critical to implement screening assays and evaluate the safety to identify potential Bacillus probiotic strains before clinical trials. This is because some Bacillus species, including B. cereus and B. anthracis, can produce toxins that are harmful to humans.ResultsIn this study, we implemented a funnel-shaped approach to isolate and evaluate prospective probiotics from homogenised food waste – sesame oil meal (SOM). Of nine isolated strains with antipathogenic properties, B. subtilis SOM8 displayed the most promising activities against five listed human enteropathogens and was selected for further comprehensive assessment. B. subtilis SOM8 exhibited good tolerance when exposed to adverse stressors including acidity, bile salts, simulated gastric fluid (SGF), simulated intestinal fluid (SIF), and heat treatment. Additionally, B. subtilis SOM8 possesses host-associated benefits such as antioxidant and bile salt hydrolase (BSH) activity. Furthermore, B. subtilis SOM8 contains only haemolysin toxin genes but has been proved to display partial haemolysis in the test and low cytotoxicity in Caco-2 cell models for in vitro evaluation. Moreover, B. subtilis SOM8 intrinsically resists only streptomycin and lacks plasmids or other mobile genetic elements. Bioinformatic analyses also predicted B. subtilis SOM8 encodes various bioactives compound like fengycin and lichendicin that could enable further biomedical applications.ConclusionsOur comprehensive evaluation revealed the substantial potential of B. subtilis SOM8 as a probiotic for targeting human enteropathogens, attributable to its exceptional performance across selection assays. Furthermore, our safety assessment, encompassing both phenotypic and genotypic analyses, showed B. subtilis SOM8 has a favourable preclinical safety profile, without significant threats to human health. Collectively, these findings highlight the promising prospects of B. subtilis SOM8 as a potent probiotic candidate for additional clinical development.

Physicochemical and Fatty Acid Profile of Refined Tuna Fish Oil By-Product from Canning and Meal Fish Industries

Fish oil by-product (FOB) recovered from the precooking process in the cannery industry and the pressing process in fish meal production are potential resources. However, this fish oil still needs a refinery process to improve the quality of fish oil. This study aimed to identify the physicochemical characteristics of the initial fish oil by-product, the physicochemical profiles, and fatty acids of the fish oil by-product after degumming neutralization and bleaching (bentonite, zeolite, and carbon adsorbents) processes from the cannery and fish meal industry. Results showed the initial physicochemical characteristics of fish oil waste from fish flour have lower quality than canned products (acid value, free fatty acids, PV, AV, TOTOX value, viscosity, and refractive index) but are inversely proportional to the iodine value. Results showed degumming (D) and neutralization (N) processes from the Fish oil canning process (FCP) and Fish oil meal process (FMP) could improve the quality parameters of fish oil by-products by reducing the acid value (7.90, 0.65, 9.17, 0.58 mg KOH/g), respectively; free fatty acid (3.97, 0.33, 4.60, 0.29 % oleic) respectively; peroxide value (PV) (15.18, 7.38, 17.64, 7.10 mEq/kg), respectively; anisidine value (AV) (14.36, 6.61, 14.64, 6.51) respectively; total oxidation (TOTOX) value (44.72, 21.37, 49.64, 20.71) respectively; and iodine (167, 153, 163, 155 mg/100 g), respectively as well as increasing the lightness (23.80, 25.70, 20.65, 26.00), respectively. In the bleaching process (B), zeolite (15 %) was an effective adsorbent to obtain oil with the best quality parameters due to zeolite possessed greater polarity and surface area at a higher concentration, which resulted in the acid value for FCP and FMP (0.26, 0.22 mg KOH/g); free fatty acid (0.13, 0.15 % oleic); PV (2.44, 5.71 mEq/kg); AV (2.5, 4.9); TOTOX value (7.16, 9.11); and iodine (138, 151 mg/100 g) as well as increasing the lightness (37.08, 36.74) that are appropriate to International Fishmeal & Oil Manufacturers Association (IFOMA), Codex Alimentarius Committee (CAC), and International Fish Oils Standards (IFOS) standards (p < 0.05). All adsorbents effectively increase the brightness of the FOB. The higher the concentration of adsorbents, the higher the clarity of the FOB. For zeolite absorbents, there was an increase of 16.73 - 32.3 % for FCP and 15.39 - 32.69 % for FMP, but the viscosity decreased with a range of 24.50 - 36.50 cPs. FCP contains 14 fatty acids, while FMP contains 12 fatty acids. The number of SFA and MUFA detected in FCP is lower than in FMP. In contrast, the amount of PUFA in FCP is relatively higher than in FMP. The percentage of EPA and DHA in FCP is lower than in FMP. Overall, the refining process affects the fatty acid composition of fish oil by-products both in the canning process and in fish meal. HIGHLIGHTS Fish oil by-product (FOB) of yellowfin tuna (Thunnus albacares) from the fish canning process (CP), and fish meal process (MP) streams were successfully purified through a chemical process which was by IFOMA, CAC, and IFOSH standards Zeolite resulted in the best fish oil quality at higher concentrations The Final Fish oil canning process (FCP) was mainly composed of linoleic, whereas the Fish oil meal process (FMP) was highly distributed in oleic and palmitic acid The sum of PUFA in FCP after bleaching was relatively higher than in FMP GRAPHICAL ABSTRACT

Production and characterization of protease enzyme from Acinetobacter pittii using peanut meal as substrate

ABSTRACT A significantly high protease enzyme yield of 617 U/ml was achieved with Acinetobacter pittii as the microorganism and peanut oil meal as the substrate. Peanut oil meal, which consists of proteins (40-60%) and carbohydrates (22-30%), serves as a sufficient source of nitrogen and carbon necessary for microbial growth and production of enzymes. Moreover, peanut meal offers the advantages of being affordable and available in large quantities, making the meal suitable for cost-effective enzyme production. In the present study, two bacterial strains and one fungal strain were selected to produce proteases utilizing peanut oil meal as the substrate. The experimental conditions during the enzyme production, including pH and temperature, were optimized. In addition, the substrate was enriched with various carbon and nitrogen sources. The microbial strains were streaked on nutritional agar (for bacteria) and potato dextrose agar (for fungus). Following an incubation period, the plates were stored at 4°C for further studies. The molecular weight of partially purified proteases of Acinetobacter pittii was found to be ≅ 95.5 kDa. Potassium nitrate was the most ideal nitrogen source (up to 411% increase in activity) and fructose was the best carbon source (425% increase). These enzymes exhibited excellent temperature tolerance and were capable of functioning over a wide pH range. Furthermore, the obtained proteases demonstrated ability to coagulate milk effectively, indicating their potential for various food-related applications.

The effect of ultrasound on the feed mixture of sunflower cake and whey

At present, secondary products of the main production in the form of cake, oil meal, bran and whey are widely used for feeding cattle. Despite the presence of protein, fats, carbohydrates, minerals and fiber in their composition, there is a problem of low assimilability of these nutrients. Moreover, secondary products are often unsafe in terms of microbiological parameters. To solve this problem, various physical and mechanical impacts are used. The paper presents the results of the study of an ultrasound effect on the feed mixture of sunflower cake and whey. Ultrasound is wave oscillations with frequencies higher than 20 kHz. Ultrasound waves propagate in solid, liquid and gas media, have a high mechanical energy and cause several physical, chemical and biological phenomena. When ultrasound impacts a mixture, bubbles are formed and large amounts of energy are emitted upon their collapse. This energy is expended on destruction of large particles of cake with particle sizes of 1370.8–2776.6 µm in the dry cake and up to 1.8–300.0 µm in the suspension. The overwhelming majority (60–75%) of particles have sizes of 11 to 30 µm when duration of the ultrasound treatment is 20–30 min. This can be seen in the photographs of the mixture under a microscope. With that, the homogeneous gel-like mass containing protein, fat, fiber and sugars is formed from a simple mixture of components, which significantly improves the process of assimilation of structured nutrients of cake by animals. A decrease in the protein content from 10.20% to 6.65% has been revealed in the suspension with a component ratio of 1:4 to 1:8. Temperature-time regimes for ratios of the cake/whey components have been established. The optimal temperature was 60–70°C, treatment time was 20 min. A temperature was lower in the mixture with a ratio of 1:8 for all time periods due to a decrease in viscosity of the formed suspension. Microbial inactivation occurs under the impact of ultrasound, which is important for animal health and productivity. As a result of the statistical processing of process indicators, a range was established for optimal values of variable factors at which a decrease in the microbiological contamination of the mixture takes place.

Physiological responses of tambaqui (Colossoma macropomum) fed diets supplemented with silage from fish and vegetables residues.

The demand for products to replace high-cost raw materials, such oil and fish meal, in the manufacture of feed for use in aquaculture, while also guaranteeing the nutritional quality of the diets, is increasing. Silage produced with fish and vegetables residues is a low-cost and efficient protein source. The objective of the present study was to evaluate the physiological and biochemical responses of tambaqui fingerlings fed four different levels of silage included in commercial feed with 28% crude protein, over two periods: 45 and 90 days. Each treatment was carried out over three replications, with 10 tambaqui in each 100 L experimental tank. At the end of each established period, blood samples were collected from five animals from each repetition to determine the hematological and biochemical variables. Body weight and total length, hepatosomatic and liposomal indices and hematocrit of specimens fed with diets supplemented with silage did not exhibit significant changes in both assessment period. After 45 days of feeding, the hemoglobin concentration increased when tambaqui were fed a diet including 20% silage. The red blood cell count, mean corpuscular volume and mean corpuscular hemoglobin did not change between treatments in either period. The total protein concentrations increased significantly in the plasma of tambaqui fed with diets with the inclusion of 5 and 10% of silage, evaluated after feeding for 45 days. It was found that the groups which had silage included in their diet did not exhibit significant alterations in the evaluated parameters, and the diet was therefore not consider harmful to the health of tambaqui. Therefore, the use of silage as a feed supplement during tambaqui farming is a sustainable alternative for producers, as it leads to a reduction of impacts of fish and vegetables waste disposal.

Converting coconut meal into biothermoplastics for industrial applications

AbstractWe present a simple approach to convert coconut (copra) oil cake into biothermoplastics with properties that are suitable for replacing synthetic polymer‐based plastics in current use. About 1.9 million tons of copra meal are generated ever year as coproducts and are available at $0.50–$0.60 per kilogram, making it a renewable, sustainable and low‐cost raw material. Despite containing proteins, carbohydrates and oil, there are limited non‐food applications of oil meals since most oil meals are typically non‐thermoplastic and hence difficult to be processed into bioproducts. In this study, we report the processing of copra meal into biothermoplastics in the presence of various plasticizers, heat and pressure. Compression molded films and bioproducts were developed from copra meal by heating at 130°C in the presence of glycerol, coconut oil or cashew shell oil as plasticizer. The films obtained had tensile strength of up to 4.4 MPa and were inherently stable in water. A one‐step crosslinking with citric acid was done to further improve the strength and stability of the films. With large availability at low cost, copra meal provides an opportunity to develop low‐cost, biodegradable, edible and innovative bioproducts that have the potential to replace the synthetic polymer‐based plastics in current use, particularly single‐use plastics.

Effect of Liquid to Solid Ratio in Rumen Content on Feedstuffs’ in Vitro Fermentability and Digestibility

The amount of fibrous feed consumed by tropical cattle has an impact on the rumen’s liquid-to-solid ratio and feed passage rate. Feed fermentability and digestibility are influenced by ratio. Several in vitro procedures use varying liquid-to-solid ratios, which may or may not be applicable to the local situation. The purpose of this study is to compare the local cow rumen conditions with the liquid-to-solid ratio employed in the in vitro investigation. There were two experiments done for the study. First, the liquid-to-solid ratios in various in vitro experiments (Tilley and Terry = T1, Theodorou = T2, and Sutardi = T3) were compared to the circumstances in the rumen of local cattle (T0). Second, it was determined whether the various liquid-to-solid ratios used in various in vitro techniques were similar in terms of the feedstuffs’ fermentability (pH, NH3, VFA), digestibility (DMD and OMD), and fermentability (DMD and OMD) (F1 = Napier grass, F2 = maize, and F3 = soybean oil meal). The first experiment was fully utilized, and a 3 x 3 block factorial randomized design was used (second experiment). The liquid-to-solid ratio of T3 (1: 40) was discovered to be more comparable to the rumen state of nearby cattle (1:46). Different in vitro techniques had no discernible impact on pH, VFA, DMD, or OMD, but T3 produced more NH3 than T1 or T2 did. With F3 higher than F2 or F1, the major effects of fermentability and digestibility were discovered inside the feed. It is found that every feed studied produced higher NH3 concentrations thanks to the Sutardi method’s liquid-to-solid ratio, which is more akin to the rumen of local cattle. As a result, it is advised to evaluate feedstuff fermentability and digestibility for local cattle using the Sutardi method.

Comparative Study of Thermal Pre-treatment on the Extraction, Antioxidant, Fatty Acid Profile, and Physicochemical Properties of Inca Inchi Seed Oil

Inca Inchi oil, an edible oil with high amounts of polyunsaturated fatty acids such as omega 3 and omega 6 fatty acids, has a wide range of applications in therapeutic, food, and pharmaceutical industries. Increasing its oil yield during oil extraction is important due to its high value. However, conventional techniques such as screw press extraction pose a limitation in terms of oil yield. Thus, in this study, the seeds were pre-treated in a microwave and hot air oven prior to oil extraction. The effects of this pre-treatment on the oil yield, fatty acid profile, antioxidant profile, and physicochemical properties were compared. Microwave treatment (4 min) was found to have the highest oil yield (43.39%) compared to control (37.76%). The proximate analysis revealed that the protein content in the oil meal was high (51–60%) compared to oil seed (24.2%), indicating that it has potential application to be developed into plant-based protein foods. The fatty acid profile indicates that the oil had high omega 3 (49%) and omega 6 (37%) fatty acids. The free fatty acids and peroxide values of the pre-treated oil samples were less than 1% and 10 meq O2/kg oil, respectively, compared to the control (1%), while the iodine value was high due to double bonds. The 2,2-diphenyl-1-1picrylhydrazyl and 2,2´-azino-bis 3-ethylbenzothiazoline-6-sulfonic acid study shows that the oil has good radical scavenging activity (70 and 90%), which shows the oil’s potential in functional food applications.

Clinical Effects of Cervical Dilation Balloon and Castor Oil Meal Nursing Interventions in Term Induction of Labor

This study analyzed the clinical effects of cervical dilation balloon and castor oil meal nursing interventions in term induction of labor. The eighty pregnant women who were scheduled for delivery in our hospital between March 2020 and January 2022 were recruited into an observation group and a control group using a random number table. The control group received oxytocin for labor induction while the observation group received cervical dilation balloon and castor oil meal nursing interventions for labor induction. In addition to clinical treatment experiments, cell experiments are performed. BeWo cells were cultured to study the effect of estrogen on cell viability, and the expression of matrix metalloproteinase 2 and 9 (MMP2, MMP9) was detected using Western blotting. The endpoints of this study were to investigate the impact of estrogen changes on term-induced pregnant women and to compare the cervical dilation balloon and castor oil meal nursing interventions with regards to duration of labor, efficacy of cervical ripening, Bishop score of the cervix, postpartum complications, and other relevant indicators. The viability of BeWo cells did not significantly differ after treatment with different concentrations of 17β-E2 (-> 0.05). The expression of MMP9 after different levels of treatment did not significantly differ (P >0.05), whereas the expression of MMP2 protein in the 5×10−7 and 5×10−8 M treatment groups was lower than that in the control group (P <0.05). The first stage and total duration of labor were significantly shorter in the observation group than that in the control group (P <0.05). The efficacy of cervical ripening was significantly higher in the observation group than that in the control group (P <0.05). The Bishop score of the cervix was significantly higher in the observation group after intervention (P <0.05). The incidence of complications in the observation group was significantly lower than that in the control group (P <0.05). Estrogen levels may affect the invasive function of trophoblast cells, causing abnormal placental function. Castor oil has hormonal effects and contains precursors for prostaglandin synthesis and can induce and strengthen contractions, soften the cervix, and dilate the cervix. The combined use of cervical dilation balloon and castor oil meal in term induction of labor has clear clinical effects, including the effective shortening of labor duration, favorable cervical ripening, significant improvement in the Bishop score of the cervix, and reduced incidence of complications. This study suggests its potential for clinical application and wider use.

A waste material rich in bioactive compounds: Hazelnut waste

Nowadays, increasing sensitivity to the environment leads to the development of sustainable agricultural policies. In this respect, it has become important to transform agricultural waste products into value-added products. Hazelnut, which has a significant trade volume worldwide, is processed into products, and some waste materials can be emerge. These waste products could transform into high added-value to food, cosmetics, and pharmaceutical industries due to possessing the bioactive compounds such as phenolics and, dietary fibre in them. This review represents the research on the bioactive compounds from the hazelnut waste, especially conducted in recently, and concentrates on its tree leaf, husk, and oil meal.

Effects of different botanical oil meal mixed with cow manure organic fertilizers on soil microbial community and function and tobacco yield and quality.

The continuous application of cow manure in soil for many years leads to the accumulation of heavy metals, pathogenic microorganisms, and antibiotic resistance genes. Therefore, in recent years, cow manure has often been mixed with botanical oil meal as organic fertilizer applied to farmland to improve soil and crop quality. However, the effects of various botanical oil meal and cow manure mixed organic fertilizers on soil microbial composition, community structure, and function, tobacco yield, and quality remain unclear. Therefore, we prepared organic manure via solid fermentation by mixing cow manure with different oil meals (soybean meal, rape meal, peanut bran, sesame meal). Then, we studied its effects on soil microbial community structure and function, physicochemical properties, enzyme activities, tobacco yield and quality; then we analyzed the correlations between these factors. Compared with cow manure alone, the four kinds of mixed botanical oil meal and cow manure improved the yield and quality of flue-cured tobacco to different degrees. Peanut bran, which significantly improved the soil available phosphorus, available potassium, and NO3--N, was the best addition. Compared with cow manure alone, soil fungal diversity was significantly decreased when rape meal or peanut bran was combined with cow manure, while soil bacterial and fungal abundance was significantly increased when rape meal was added compared with soybean meal or peanut bran. The addition of different botanical oil meals significantly enriched the subgroup_7 and Spingomonas bacteria and Chaetomium and Penicillium fungi in the soil. The relative abundances of functional genes of xenobiotics biodegradation and metabolism, soil endophytic fungi, and wood saprotroph functional groups increased. In addition, alkaline phosphatase had the greatest effect on soil microorganisms, while NO3--N had the least effect on soil microorganisms. In conclusion, the mixed application of cow manure and botanical oil meal increased the available phosphorus and potassium contents in soil; enriched beneficial microorganisms; promoted the metabolic function of soil microorganisms; increased the yield and quality of tobacco; and improved the soil microecology.

Application of the Artificial Neural Network to Predict the Bending Strength of the Engineered Laminated Wood Produced Using the Hydrolyzed Soy Protein-Melamine Urea Formaldehyde Copolymer Adhesive

The artificial neural network (ANN) was used to predict the modulus of rupture (MOR) of the laminated wood products adhered by melamine/urea formaldehyde (MUF) resin with different formaldehyde to melamine/urea molar ratios combined with different weight ratios of the protein adhesive resulting from the alkaline treatment (NaOH) of the soybean oil meal to MUF resin pressed at different temperatures according to the central composite design (CCD). After making the boards and performing the mechanical test to measure the MOR, based on experimental data, different statistics such as determination coefficient (R2), root mean square error (RMSE), mean absolute error (MAE) and sum of squares error (SSE) were determined, and then the suitable algorithm was selected to determine the estimated values. After comparing estimated values with the experimental values, the direct and interactive effects of the independent variables on MOR were determined. The results indicated that using suitable algorithms to train the ANN well, a very good estimate of the bending strength of the laminated wood products can be offered with the least error. In addition, based on the estimated and measured strengths and FTIR and TGA diagnostic analyses, it was found that the replacement of the MUF resin by the protein bio-based adhesive when using low F to M/U molar ratios, the MOR is maximized if a high range of temperature is used during the press.

Effects of Additional Mint Leaf (Mentha Piperita, L) Fermentation on the Percentage of Broiler Carcass, Liver and Heart

Research with the addition of fermented mint leaves in drinking water aims to determine the effect of treatment on the percentage of carcass weight, liver and heart. This research was carried out for 2 months in the Animal Feed and Nutrition Laboratory and in the broiler cage at the Livestock Production Laboratory, Payakumbuh State Agricultural Polytechnic. This study started from DOC until the age of 35 days, as many as 100 broilers were the subjects, 5 treatments and 4 replications were given. The treatments were without the addition of fermented mint leaves (A), the addition of 0.3% fermented mint leaves in drinking water (B), the addition of 0.6% fermented mint leaves in drinking water (C), the addition of 0.9% fermented mint leaves in drinking water. drinking water (D) and the addition of 1.2% fermented mint leaves in drinking water (E). The basal ration consisted of corn, palm oil meal, soybean meal, fish meal, coconut oil and top mix. The variables measured were the percentage of carcass weight, liver, and heart. The research method used a completely randomized design. The results showed that the addition of fermented mint leaves in drinking water had no significant effect (P>0.05) on the percentage of carcass weight, liver and heart. The conclusion is that the addition of fermented mint leaves in drinking water up to a level of 1.2% can be tolerated by broilers until the age of 5 weeks.

Efficiency of wheat use in organic animal husbandry

Conceptual justification of the basic feed raw materials list which is promising for the implementation of organic technologies in Siberia is a necessary step to solve the problem of organic production of regional livestock and the creation of an appropriate feed base. The results of the validity of the use of wheat in the organic production of livestock products are presented. The ways of transforming wheat to improve the efficiency of its use in animal feed are proposed. The objectives of the research included studying the agronomic possibilities of wheat cultivation in Siberia according to the rules of organic production, assessing the scale of its use for fodder purposes, determining the amino acid composition of regional wheat varieties, justifying the effectiveness of obtaining a feed additive from it, assessing the possibility of using the new additive in the diets of animals kept according to the rules of organic production. The yield of spring wheat cultivated in Siberia on fallow and organic production norms is 62.5% on average of the yield of wheat cultivated on conventional intensive technology. The loss of 38% of the yield due to organic technology can be compensated by increasing the area of its crops. The average values of the content of normalized amino acids in wheat of the studied 82 released varieties of Siberian breeding are less than the reference values. An experimental feed additive with a lysine content of about 20 g/kg in terms of dry matter was obtained from wheat. This is comparable with the lysine content in meat and bone meal, sunflower oil meal - traditional protein ingredients of Siberian feed for monogastric animals, but not included in the list of raw materials permitted for use in organic animal husbandry. Using the obtained additive full-fat mixed fodder for young pigs and poultry were composed. Positive effect of the obtained wheat additive on the productivity of experimental animals kept under the rules of organic production was experimentally established.

STUDYING THE INFLUENCE OF THE VERMI FEED ADDITIVE ON DOMESTIC BIRDS (LAYING HENS)

Target. To study the possibility of using vermicorm additives in the diets of laying hens to ensure better bsorption of nutrients in the diet of chickens. The results of experimental studies conducted on the use of a new feed additive derived from the biomass of red California worms as poultry feed are presented. The following optimal ratios of components in the developed feed additive in mass have been established. %: biomass of red California worms (6.0), sodium chloride (3.0), seaweed (5.0), calcium peroxide (2.0) the rest is a mixture of meal and cake (mass ratio 1:1) production of cottonseed oil. Scientific novelty. The originality of the solution to the problem lies in optimizing the feeding programs of birds of the egg productivity direction by using a new vermicorm additive. The main task is to replace synthetic antibiotics used for the prevention and treatment of birds and animals. The proposed feed additive (FA) is biologically active, has increased nutritional value due to the content of the complex of interchangeable and essential amino acids of animal and plant origin. In addition, it contains the necessary amount of micro (Se, I, Cu, Mo, Zn, F, etc.) and macronutrients that ensure the normal functioning of birds. According to the results of the experiment, during the period, the introduction of a fodder additive into the diet of hens of the layers noticed an increase in the intensity of egg production in the first group more by 20%, in the second group of hens of laying hens - 30% and in the third group - 50% compared to the control group.

Effect of Limited Enzymatic Hydrolysis on Structural and Functional Properties of Elaeagnus mollis Oil Meal Protein.

Elaeagnus mollis oil (EMO) meal, a by-product of oil production with plentiful protein, is considered a cheap and good quality source of plant protein for use in the food industry. In this study, the influence of limited enzymatic hydrolysis of EMO meal protein on the structure, solubility, foaming and emulsifying capacities was investigated in detail. The hydrolysates with different DH values (5, 10, 15, and 17) were obtained by controlling the time of enzymatic hydrolysis with alcalase. The results showed that enzymatic hydrolysis decreased molecular weight and increased flexibility and surface hydrophobicity. At the given range of pH and concentration of NaCl, the solubility, foaming and emulsifying capacities of hydrolysates were significantly improved, especially in the area of isoelectric point, and increased with the increase of DH. It was also found that the hydrolysate with DH10 had better foaming and emulsifying stability. In general, appropriate enzymatic hydrolysis could improve the functional properties in favor of their potential use as food ingredients.

Bioproducts from proteins in neem seed oil meals

AbstractExtraction of oil from Azadirachta indica generates oil cake (meal) containing proteins and carbohydrates. The proteins in neem oil cake with antimicrobial and antioxidant properties have been made into films and studied for their properties and potential applications. Neem oil cakes are available in large quantities at low cost but are non‐edible and have limited applications. Currently, most of the neem oil cakes are used as fertilizers. Neem oil cakes contain about 25–30% proteins and 30–40% carbohydrates, which are valuable. Proteins in the neem oil cake could be suitable for food, medical, biotechnology, and other applications. However, there are no reports on the properties or applications of proteins in neem meal. In this study, a simple alkaline process was used to extract proteins from the oil meal and the proteins obtained were converted into films. The films were crosslinked with citric acid (CA) to improve mechanical properties and stability in aqueous conditions. Neem protein films have good resistance to aqueous conditions and acceptable strength and elongation. The films have better antifungal activity than antibacterial activity. Cells (L929) were able to attach and grow on the films but at a lower rate than Dulbecco's Modified Eagle Medium (DMEM) media. Proteins in neem oil cake show potential as substitutes for the animal‐based proteins in current use. © 2022 Society of Chemical Industry and John Wiley & Sons, Ltd.