Higher Percentage Of Oleic Acid Research Articles

The Quality Evaluation of Avocado Fruits (Persea americana Mill.) of Hass Produced in Different Localities on the Island of Tenerife, Spain.

The effect of the production area on the quality of Hass avocados grown on the island of Tenerife was studied. For this purpose, several physicochemical parameters, such as fruit weight, percentage of pulp, seed and skin, proximate composition, minerals, total phenolic compounds (TP), total flavonoid compounds (TF), α-tocopherol, antioxidant capacity, and fatty acid profile were analyzed. The location of the orchards significantly influenced avocado weight; pulp and seed percentage; and fat, fiber, ash, α-tocopherol, TP, phosphorus, potassium, calcium, iron, zinc, and oleic and palmitoleic acid contents. Buenavista (BU) avocados were the smallest (185 g) and presented the highest percentage of pulp (77.1%) and lowest percentage of fiber (5.43%). The highest levels of dry matter (33.8%) and fat (20.4%) were found in avocados harvested in Los Silos (SI) and Santiago del Teide (SA), respectively. Compared with those at the other locations, the avocados harvested in Güímar (GU) had high levels of α-tocopherol (52.2 µg g-1) and phenolic compounds (56.0 mg GAE 100 g-1). Avocados from Los Realejos (RE) had the highest percentage of oleic acid and the lowest percentage of palmitoleic acid. Numerous significant correlations were found between the variables studied, especially those between TP, TF, and antioxidant capacity (DPPH) and between fat percentage and dry matter.

Total Lipid Content and Fatty Acid Composition of Two Morphologically Distinct Chlorella spp. for Biodiesel Production

This study investigated the potential of two morphologically distinct Chlorella spp. to assess the total lipid content and fatty acid composition targeting biodiesel production. Due to their rapid growth, less space requirement, and zero-conflict with current food demand, green microalgae-led biodiesel production has gained a key attention as an alternative, sustainable and eco-friendly substitute for fossil fuels diminishing the increased demand for fossil fuels, fuel prices and excessive release of greenhouse gases to the atmosphere. The Chlorella spp. were isolated from Beire Lake, Colombo (Wet Zone) and Kiriibban Lake, Monaragala (Dry Zone) of Sri Lanka. They were named as BCS1 and RCS2, respectively. Semi-mass culturing of Chlorella spp. in BG-11 medium (pH=7.5-8.5) was carried out in a greenhouse providing aeration and a 12:12 light: dark photoperiod. After 4 weeks, Chlorella spp. were harvested using aluminium sulphate, employing flocculation method. Harvested biomass was oven-dried and made into a fine powder for analysis. The total lipid content (TLC) of Chlorella spp. was determined using n-hexane as the extraction solvent in a soxhlet extractor maintaining three replicates for each. Extracted lipids were dried in a rotary evaporator and TLC was calculated gravimetrically. The total lipid content of BCS1 and RCS2 was recorded as 15.67% and 18.33%, respectively. After quantification, lipids were resuspended and concentrated in 1 mL of n-hexane to convert into fatty acid methyl esters (FAMEs)/ biodiesel via a transesterification reaction. The trans-esterified lipids (FAMEs) were analysed via Gas Chromatography. The most dominant FAMEs of BCS1 were palmitic acid (C16:0), oleic acid [C18:1 cis (n9)], stearic acid (C18:0), lignoceric acid (C24:0), lauric acid (C12:0) and myristic acid (C14:0). The most dominant FAMEs of RCS2 were cis-10-pentadecenoic acid (C15:1), elaidic acid [C18:1 trans (n9)], linolelaidic acid [C18:2 trans (n6)], cis-11-eicosenoic acid [C20:1 (n9)], lignoceric acid (C24:0) and oleic acid [C18:1 cis (n9)]. A well-balanced saturated and unsaturated FAME composition is essential for the optimal biodiesel quality, herein it was found in BCS1 with 41.62% of palmitic acid and 33.38% of oleic acid. Higher percentage of oleic acid exhibits a combination of oxidative stability and low temperature properties determining the suitability of BCS1 as a biodiesel feedstock compared to RCS2. In conclusion, even though RCS2 has a higher total lipid content, BCS1 exhibits more favourable characteristics in its FAME composition as a promising feedstock for biodiesel production.
 
 Keywords: Green microalgae, Chlorella spp., Total lipid content, Lipid composition, Biodiesel

Response of Qualitative Traits of Sunflower Helianthus annuus (L.) Cultivars to Spraying with Glycine Acid

Field experiment was carried out during the spring seasons of 2021 and 2022 in the fields of a farmer in the district of Ramadi - Anbar province, in silty loam soil texture, with the aim of studying the response of qualitative traits of sunflower cultivars (Sakha, Luluah, and Akmar) to spraying with Glycine acid at concentrations of (0, 100, 200, and 300 mg L−1). The experiment was conducted according to randomized complete block design with split plot arrangement with three replicates, with a total of 36 experimental units, where the Glycine acid concentrations occupied the main plots, and the cultivars occupied the sub-plots. The most important results indicate that cultivars had a significant effect on most of the studied traits, with the Akmar cultivar achieving the highest percentage of oleic acid, linoleic acid, and unsaturated fatty acid percentage in both seasons, while the Luluah cultivar achieved the highest percentage of stearic and palmitic acids, and saturated fatty acid percentage in both seasons. The superiority of the Akmar cultivar and the high concentrations of Glycine acid, and their interaction in the percentage of oleic and linoleic acids, led to an increase in the percentage of unsaturated fatty acids, which improved the quality of sunflower oil, as the high percentage of unsaturated fatty acids and low percentage of saturated fatty acids are a desirable trait in sunflower oil.

Candidate SNPs for meat quality and carcass composition in free-range Iberian pigs

Several genetic markers, previously associated with meat quality traits, have been proposed to be included in Iberian pig breeding programs. However, before being implemented, effects of these candidate SNPs on premium cuts' yield should be evaluated to avoid potential undesirable antagonistic effects. Therefore, the main goals of this study were to evaluate the effects of a set of 26 polymorphisms on premium cuts weights and to corroborate their effects on meat quality in a larger population. Phenotypic data of approximately 1550 Iberian pigs were recorded.The PRKAG3_rs319678464C and PRKAG3_rs1108399077G alleles were associated with an increase of shear force, water losses and color values and a reduction of average daily gain (ADG). The CAST_rs196949783G > A and ADIPOQ_rs3476515794T > G SNPs mainly affected IMF content, with this last SNP being the only one with significant effects on any of the carcass measures, specifically Longissimus thoracis et lumborum (LTL) weight. The ELOVL6_rs3473714672A, FASN_rs331694510A, MTTP_rs335896411C and ACACA_rs340781986C alleles were linked to a higher percentage of oleic acid and monounsaturated FA and a decrease in palmitic, palmitoleic and saturated FA. Besides, suggestive effects were observed between ELOVL6_rs3473714672A > G and ham and shoulder weights, and between MTTP_rs335896411T > C and LTL muscle weight. Finally, the NR6A1_rs326780270T allele was associated with a significant increase in ADG and tended to reduce the ham weight. The SNPs mapped to PRKAG3 (rs319678464G > C), ACACA, FASN and CAST genes could be implemented in breeding programs to improve meat quality traits without undesirable effects on carcass composition. The SNPs mapped to PRKAG3 (rs1108399077G > A) ELOVL6, MTTP and NR6A1 should continue to be tested in a larger number of animals.

Chemical, Physical, and Technological Characteristics of Palm Olein and Canola Oil Blends

Because of the limited technical properties of their native forms, oils and fats are frequently blended to achieve the desired textural and oxidative properties. In this study, canola and palm oil blends were prepared in nine different proportions: B1 (90 : 10), B2 (80 : 20), B3 (70 : 30), B4 (60 : 40), B5 (50 : 50), B6 (40 : 60), B7 (30 : 70), B8 (20 : 80), and B9 (10 : 90). Pure palm oil (PO) and canola oil (CO) were used as the controls. All blends were assessed for physicochemical properties, fatty acid composition, heat treatment, and polymer content. The results indicated negative cold tests only for B1 and B2 blends with 10 and 20% PO, respectively. Iodine value decreased with increasing palm oil concentration and was lowest (62.03 ± 0.526) for blend B9, i.e., 90% PO. The fatty acid profile indicated more saturated fatty acids and a higher percentage of oleic acid in PO than in CO. The fatty acid profile values of blends B1–B9 were between those of the pure PO and CO. Linoleic and linolenic acids were more in blends B1–B9 than those in pure PO. The polymer content of PO (7.17%) was found to be lower than that of CO (10.32%) after 60 h of heating at 180°C. In addition, biologically active substances (BASs), which could be formed during the frying process, were tested by measuring the inhibition zone of E. coli growth. PO retarded BAS formation. The blended palm or canola oils resulted in better stability and increased organoleptic characteristics and hence can be suitable as economical and healthy alternatives to pure palm or canola oil.

Potential Capacity of Candida wangnamkhiaoensis to Produce Oleic Acid

Oleic acid is increasingly required in many industries, causing the indiscriminate extension of land for the cultivation of certain agricultural products to extract their oil. The current contribution aimed to cultivate Candida wangnamkhiaoensis (CW) for the production of lipids and determine the profile of fatty acids in these lipids. The lipid yield was compared in the yeast when using glucose or glycerol as the substrate, in both cases being over 24%. The main fatty acids in the oil derived from CW were oleic, palmitic, stearic, and linoleic acid. The fatty acid composition of the oil from CW was very similar to that of avocado oil and resembled that of olive oil and palm oil. The advantages of cultivating CW include its relatively high percentage of oleic acid and the balance of other fatty acids, its capacity to generate lipids in a short time (48–72 h), the controlled environment of production (versus the variability of the cultivation of agricultural products), and the relatively limited surface area required. CW shows potential as an alternative and economical source of oleic acid for the food, drug, cosmetics, lubricant, and biofuel industries, and does not require the alteration of large extensions of land.

Characterization of Adansonia Digitata (Baobab Wood) Bio‑Oil and Biochar Produced Using a Fixed-Bed Tubular Reactor

The investigation of the characterization of Adansonia digitata biomass from pyrolysis in a fixed-bed tubular carbon steel reactor at temperatures of 400℃ to 700℃. Firstly, proximate, ultimate, and heating value analyses of the raw biomass were obtained prior to experimental runs via the fast pyrolysis process; thereafter, the quality of the bio-oil and biochar yields for bioenergy and industrial applications was investigated using the following analyses: higher heating values (HHV), lower heating values (LHV), scanning electron microscopy (SEM), and Fourier transform infrared spectroscopy (FT-IR). Optimum bio-oil (52.70 wt%) and bio-char (40 wt%) yields were obtained at temperatures of 500 and 400℃, respectively. GC-MS analysis of the yielded biooil revealed a higher percentage of oleic acid, phenol, methanol, and ketone among the fuel compositions, whereas the bio-oil chemical composition includes carbon (70.99%), hydrogen (13.40%), nitrogen (0.54%), oxygen (15.01%), and sulfur (0.06%), flash (81) and pour points (-7) for bio-oil with HHV (30.75 MJ/kg) and LHV (27). The results obtained demonstrated that the properties of products can serve as a waste management strategy, sorbent, soil enhancer, and biofuel industry application.

Use of Ultrasound Treatment to Improve Oil Extraction From Sunflower

The current study aimed to improve the extraction of sunflower oil by exposing the oil to an ultrasonic treatment at a frequency of 20 Hz for different (0,5,10,15)minute, then extracting the oil using hexane. It was noted through the results obtained in the study that there is a significant increase in the extraction rate, it was found that the highest extraction rate was (68.96%) at time (10min) and the lowest was (22.50%) at time (0). The physicochemical properties of sunflower oil were studied, the results showed there was a noticeable improvement in those physicochemical properties of sunflower oil, the density was also studied, the highest percentage was (0.926kg/cm3) at time (15), and the lowest percentage (0.918kg/cm3) at time (0). The highest percentage of viscosity was (65c.p) at time (15) while the lowest viscosity (57.5c.p) recorded at time (0). In the study of refractive index, the results showed the highest refractive index was 1.480 at time (15) and the lowest index was (1.476) at time (0), the results also showed the highest percentage of the acidity was (0.85 mg/koh/g) at time (0) while the lowest acidity reached to (0.635mg/koh/g) at (15). The highest percentage of iodine number was (122.4) at time (0) and the lowest percentage 101.8 at time (15). Similarly, the results showed the highest percentage of peroxide number was (3.53mg/koh/g) at time (0) and the lowest percentage (2.58mg/koh/g) at time (15). The highest percentage of saponification number was (199mg/koh/g) at the time (15) and the lowest percentage (188.5mg/koh/g) at the time (0). The fatty acids of the oil exposed to ultrasound and extracted with the hexane were also studied, and the results showed an improvement in some fatty acids, the highest percentage of palmitic acid reached (5.93%) at time (15) and the lowest (4.90%) at time (0). Similarly, the highest percentage of oleic acid reached (19.07%) at time (15) and the lowest percentage was (18.26%) at time (0), while linoleic acid reached the highest percentage (46.91%) at time (15) and the lowest percentage (45.52%) at time (0), and similarly the highest percentage of stearic acid reached (4.59%) at time (15) and the lowest percentage (3.44%) at time (0), the highest percentage of linolenic acid was (0.58%) at time (15) and the lowest percentage (0.39%) at time (0).

Crop year, harvest date and clone effects on fruit characteristics, chemical composition and olive oil stability from an Empeltre clonal selection grown in Aragon

BACKGROUNDIn this study, the effects of crop year, harvest date and clone on the fruit characteristics and chemical composition of Empeltre olive oils were evaluated. For this purpose, the weight and oil content of fruit and the fatty acid composition, polyphenol content and oxidative stability of the olive oil was analysed throughout ripening during three successive seasons.RESULTSThe weight and moisture in the fruit, as well as the fatty acids and polyphenol content in the olive oil, were mainly affected by crop year. In contrast, the stability was strongly influenced by the harvest date. Both factors had an influence on the fruit's oil content. The clone was not a substantial component in terms of variability, although the interaction with crop year was notable for some of the characteristics. The oil content increased significantly along with the harvest date and reached maximum values in the last period (44.9%). Conversely, stability and polyphenols decreased significantly (depending on the year, by 30–70%) from October to December, reaching the highest mean values between 1 October and 10 November (15.5 h; 500 mg caffeic acid kg−1). Oleic acid and monounsaturated/polyunsaturated fatty acids (MUFA/PUFA) did not show significant differences depending on the harvest date, but between years, with 2018 having the highest percentage of oleic acid (72.72%) and MUFA/PUFA (8.38).CONCLUSIONEarly harvesting of Empeltre olives would provide considerably more stable olive oils, regardless of the clone selected, with higher phenolic content. It would not affect the MUFA/PUFA ratio, mainly influenced by the crop year. © 2022 The Authors. Journal of The Science of Food and Agriculture published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.

Antibacterial Efficacy of Nanoparticles of Rambutan Peel Extracts (Nephelium lappaceum L.) compared to Microparticles against Oral Bacteria

Abstract: Oral biofilm containing microorganisms is responsible for various oral infections and inflammatory diseases. Bioactive compounds found in rambutan peel extracts (Nephelium lappaceum L) has antibacterial properties. Nanoparticle sizes were known to have the greater capability as an a antimicrobial. This study aimed to compare the efficacy of rambutan peel extracts (RPEs) in micro-particles with nanoparticles against oral bacteria, i.e. Streptococcus mutans and Staphylococcus aureus. This was a laboratory experimental study with a post-test-only design conducted by using RPEs in microparticles (62.5 mg/mL and 250 mg/mL) and nanoparticles (26.5 mg/mL). The particle sizes were measured; the active compound screening was carried out with gas chromatography-mass spectrometry (GC–MS); and the antibacterial activities were tested with the disc diffusion method. The particle size distribution for RPEs with microparticles was measured at 2489 nm, whereas the nanoparticle at 7.491 nm. The GC-MS results demonstrated that both microparticles and nanoparticle RPEs contained oleic acid, hexadecanoic acid, and decanoic acid. A higher percentage of oleic acid was found in nanoparticles of RPEs. There was a significant difference between microparticles of RPEs of 62.5 mg/mL (12.83±1.532) and nanoparticles (16.25±1.529). This study demonstrated that inhibitory power increased along with the elevation of RPEs’ concentration as the number of chemi-cal components intensified. The ANOVA and post-hoc Tukey HSD test showed significant differences in the effectiveness of RPEs in nanoparticles groups compared to microparticles 62.5 mg/ml against S. mutans (p<0.05). and S. aureus (p<0.05). In conclusion, RPEs were more effective in inhibiting Staphylococcus aureus than Streptococcus mutans.Keywords: nanoparticles; rambutan peels; Nephelium lappaceum L; antibacterial activity; Streptococcus mutans; Staphylococcus aureus

Extracts of Different Organs of Macadamia Nut Tree (Macadamia Integrifolia) Ameliorate Oxidative Damage in D-Galactose Accelerated Aging Model in Rats

Macadamia nut tree, Macadamia integrifolia (Maiden & Betche), is cultivated for the production of the edible macadamia nuts, which are a good source of monounsaturated fatty acids. We investigated the effect of ethanolic extracts of leaves, nuts, and nutshells of macadamia in D-galactose accelerated aging model in rats. Administration of D-galactose (150 mg/kg) in rats for 60 days resulted in impairment of cognitive function and motor coordination and caused an increase in oxidative stress and deterioration of liver and kidney functions. Macadamia nut extract ameliorated cognitive impairment induced by D-galactose as inferred from Morris water maze test and balance test using rotarod. Also, nut extract was superior to leaves and shell extract in reducing serum levels of malondialdehyde (50%), alanine transaminase (63%), aspartate transaminase (63%), total bilirubin (24%), creatinine (38%), and urea (16%) compared to animals that received no treatment. Chemical analysis showed that macadamia nut extract has a high percentage of oleic acid (81%) followed by palmitoleic acid (6.9%). This study encourages further investigation of the health benefits of macadamia nuts and the underlying mechanism of these effects.

Response of Moringa oleifera Seeds and Fixed Oil Production to Vermicompost and NPK Fertilizers under Calcareous Soil Conditions.

A shortages of soil nutrients resources and a lack of accessibility to them especially in calcareous soil are considered some of the main factors that limit plant production. In particular, the cultivation of the Moringa oleifera trees in this type of soil is of special interest given the increasing demand for every part of this tree. Several studies have focused on the production of its leaves as an herbaceous plant and not as a tree, but there has not been extensive research on its pods, seeds, and fixed oil production. In this sense, in this study, we provide an assessment of the use of fertilizers, vermicompost and NPK (as traditional minerals and as nanoparticles), in order to improve pods, seeds, and fixed oil contents, as indicators of the quality of the production of the Moringa oleifera trees in calcareous soil conditions. In this experiment, it was observed that all parameters and the yield of pods, seeds, and fixed oil of the Moringa oleifera tree were significantly improved by increasing the level of vermicompost and using NPK fertilization and combination treatments in both seasons of the study. The combination treatments of 10 and 20 ton ha−1 vermicompost plus NPK control produced the highest percentage of oleic acid with insignificant differences between them.

Aqueous Extraction of Seed Oil from Mamey Sapote (Pouteria sapota) after Viscozyme L Treatment

In this study, aqueous enzymatic extraction (AEE) was evaluated during the process of obtaining oil from mamey sapote seed (OMSS). Viscozyme L enzyme complex was used at pH 4 and 50 °C during the optimization of the extraction process by central composite design and response surface methodology. Optimal conditions were: 3.5% (w/w) of enzyme (regarding the seed weight), 5.5 h of incubation time, 235 rpm of agitation rate, and 1:3.5 of solid-to-liquid ratio. These conditions enabled us to obtain an OMSS yield of 66%. No statistically significant differences were found in the fatty acid profile and physicochemical properties, such as the acid and iodine values and the percentage of free fatty acids, between the oil obtained by AEE or by the conventional solvent extraction (SE). However, the oxidative stability of the oil obtained by AEE (11 h) was higher than that obtained by SE (9.33 h), therefore, AEE, in addition to being an environmentally friendly method, produces a superior quality oil in terms of oxidative stability. Finally, the high oil content in mamey sapote seed, and the high percentage of oleic acid (around 50% of the total fatty acid) found in this oil, make it a useful edible vegetable oil.

Quality and Shelf Life of Fresh Meat from Iberian Pigs as Affected by a New Form of Presentation of Oleic Acid and an Organic-Acid Mix in the Diet

The objective of the study was to evaluate the inclusion of a novel form of oleic acid and an organic-acid mix in the diet of Iberian pigs, and their effect on the quality and shelf-life of the pig meat. 200 castrated male Iberian pigs were randomly assigned to four groups. Diets included different fat sources: pig fat (G1), solid oleic acid (G2), oleic-high sunflower oil with solid oleic (G3); a diet of G3 supplemented with organic-acid mix (G4). Pigs were slaughtered at 182 days. Back fat and the longissimus thoracis et lumborum muscles were removed, and nutritive and sensory quality were analyzed. The shelf-life of meat packaged (70%O2/30CO2) during retail storage up to 21 days were studied. A higher percentage of oleic acid and MUFA, and lower SFA were observed in subcutaneous fat on a G2 diet. G2 resulted in the highest muscle fat content, and G4, the highest cooking losses. In sensory analysis, marbling, tenderness and chewiness were higher in the G2 samples. No differences were found in the bacterial count and sensorial analysis depending on storage time at the end of the experiment, but a lower total viable count was showed at the start of the study in the G4 samples. These results suggest a better assimilation of solid oleic acid. However, the organic-acid mix requires further studies.

Comparative study for physico - chemical characteristics of crude Moringa Peregrina , Terminalia bellerica and Tiger nut oils

Vegetable oils constitute an important part of the diet of humans. The objective of this research is to study the utilizing the seeds of Terminalia bellerica, Moringa peregrine, and tubers of Tiger nut to produce oils that can be utilized successfully as sources of edible oil for human consumption. Fatty acids compositions of oils were analyzed by (GLC), phenolic compounds of oils and meals were identified and determined using HPLC, minerals content of meals were analyzed by atomic absorption spectrophotometer. Also, amino acid content of meals determination by amino acid analyzer. Moringa peregrina seed had the highest oil content (50.09 %) followed by Terminalia bellerica seed (36.01%) and Tiger nut (19.33 %) respectively. Moringa peregrina recorded a higher increase instability compared to the stability of Terminalia and Tiger nut oil. Moringa peregrina seed oil had the highest percentage of oleic acid (76.91%) followed by Tiger nut tubers oil (69.53%), but Terminalia bellerica seed oil had the lowest percentage from it (27. 09 %). Moringa peregrina seed oil contained a higher amount of total tocopherols compared to other samples. The result indicates that Moringa peregrine and Terminalia bellerica, and Tiger nut oil could be a good source of edible oil.

RESPONSE SOME QUALITY CHARACTERISTICS OF SUNFLOWER (Helianthus annuus L.) VARIETY TO ZINC SPRAYING

A field experiment was carried out in the Spring and Autumn seasons of 2018 in Al-Subaihat village (latitude 33° 21- N and longitude 43° 46- E) Fallujah city - Al-Anbar governorate in silty-loam soil. To study the effect of two factors which were foliar zinc application different concentration of zinc 0, 0.5, 1.0 and 1.5 kg Zn h1 in the form of aqueous zinc sulfate ZnSO4.7H2O (46% Zn) on the Qualitative Characteristics of three varieties of sunflower (Tarsan8018, Esahaqi 1 and Aqmar). The layout of experiment RCBD ,arrangemental in Factorial experimental units distributed (36 experimental units) with three replicates. The results showed significant different between cultivars in most of the studied traits. Aqmar gave the highest oil content of 54.14 and 51.40% for the both spring and autumn respectively. For the autumn season, Tarsan1018 cv. recorded highest mean percentage of unsaturated fatty acids in seeds about 91.73% for spring season, While Isahaqi 1 exceeded the highest mean of 90.91% for autumn season. Isahaki 1 plants recorded the highest average carbohydrate percentage of 14.70 and 14.97% Zinc spraying resulted in a significant increase in the seed oil percentage. The concentration of 1.5 kg Zn h-1 achieved the highest mean ( 51.56% ) in spring season , while concentration of 1.0 kg Zn E-1 achieved the highest mean capacity in the autumn season (48.79%) Concentration 0.5 kg Zn h-1 are highest percentage of unsaturated fatty acids was 91.01%. In the autumn season, while the concentration of 1.0 kg Zn h-1 achieved the highest average percentage of unsaturated acids in seeds was 90.56%, also the concentration of 1.0 kg Zn h-1 gave the highest percentage of oleic acid in oil was 68.48% and 27.92% for the two season respectively.

Physical-Chemical Composition, Fatty Acid Profile and Sensory Attributes of Meat of Lambs Fed With Saccharine Sorghum Silage

The objective of this work was to evaluate the qualitative and sensory characteristics and the fatty acid profiles of the meat of lambs fed with silages of two saccharine sorghum varieties and compare them with forage sorghum and maize silages. Twenty non-castrated male Suffolk lambs were arranged in a completely randomised block design, and the treatments consisted of the following silages: forage sorghum (FORSOR), saccharine sorghum (‘BRS506’), saccharine sorghum (‘BRS511’) and maize (MAIZE). The animals were slaughtered after 70 days in the feedlot. The carcasses were cooled at 4 °C for 24 h. The longissimus thoracis et lumborum muscle was removed for analysis. No differences (p > 0.05) between treatments were found for chemical composition and qualitative and sensory characteristics of the evaluated meat. Lambs fed with ‘BRS506’ presented muscles with higher total unsaturated and monounsaturated fatty acids and with higher percentages of oleic acid. The BRS506 saccharin sorghum silage increased the meat total unsaturated and monounsaturated fatty acid contents, which are beneficial to human health; thus, this silage can replace maize silage in the feed for finishing lambs.

Electrospun Polymer Nanofiber from Moringa Oleifera Kernel Oil with Coaxial Electrospinning Method

Background: Moringa oleifera kernel oil consist of monounsaturated fatty acid with high percentage of oleic acid. The oil consist of phytochemicals, bioactive compounds and nutrients that have several application in health industries. However, the oil degrades on exposure to light, heat and oxygen overtime. In addition, rancidity cause the oil quality to defect and reduce the shelf-life. Therefore, microencapsulation techniques are uniquely applied to oil to preserve their native quality and prolong their shelf life. Objective: This study examines different polymer concentrations and injection flowrates of zein nanofiber from Moringa oleifera kernel oil using coaxial electrospinning method. Methods: A 40% w/v zein polymer was the optimal loading concentration and 0.7 mL/hour of zein polymer with 0.1 mL/hour of Moringa oleifera kernel oil was the optimal injection flowrates for electrospun nanofiber. Analysis of the Moringa oleifera kernel oil and polymer sample micromorphology, were investigated with Field Emission Scanning Electron Microscopy (FESEM) and transmission electron microscopy (TEM). Result: result shows uniformly layered nanofiber. The nanofiber has no beads formation and the fiber strands are continuous with no entanglement. The polymer encapsulated the oil efficiently. Furthermore, thermal analysis through Differential Scanning Calorimetry (DSC) showed consistency in the nanofiber thermal behavior. Thermogravimetric (TGA) analysis revealed the weight loss and thermal dissociation of the polymer structure. The electrospun nanofiber average diameter was 450 ± 24 nm and exhibited hydrophobicity. Conclusion: The co-axial electrospine technique was effective in fabricating electrospune nanofibers.

Synthesis and Characterization of Potential Bio‐Based Lubricant Basestocks via Epoxidation Process

AbstractChemical modifications of vegetable oils may be applied for the purpose of improving their physicochemical properties in their usage for the bio‐based lubricants. The vegetable oils with a high percentage of oleic acid, such as soybeans and rapeseed oils, are important raw materials to obtain the biolubricants. In this particular study, the oleic acid was esterified with 1‐octanol, followed by epoxidation. The oxirane ring opening reaction was performed using different alcohol structures (linear, branched, and cyclic), in order to evaluate their influence on the final physicochemical properties with the synthesized samples. These aforesaid reaction steps were followed by 1H nuclear magnetic resonance and the main physicochemical properties in the intermediate and final samples were assessed. The highest oxidative stability was observed for the samples obtained, using a cyclic alcohol at the oxirane ring opening reaction (230 min), followed by the linear alcohols with the branched alcohol presenting the lowest oxidative stability (124 min). The pour point values for the samples synthesized with the branched alcohol were slightly better than those with the linear and cyclic alcohols. All the synthesized samples showed high viscosity indexes (>130) and kinematic viscosities at 40 °C, ranging from 30 to 33 cSt (application degree ISO VG‐32), which are adequate for their use in the formulation of bio‐based lubricants.

Extraction of radish seed oil (<em>Raphanus sativus L</em>.) and evaluation of its potential in biodiesel production

Growing concern about replacing fossil fuels with renewable energy sources, coupled with society’s concerns about environmental preservation, are the main reasons why governments have sought strategies for increased production and consumption of renewable and sustainable fuels. Radish (Raphanus sativus L.) belongs to the group of oilseeds of the Brassicaceae family, being widely cultivated in the south and central-west regions of Brazil, with physical and chemical characteristics propitious to the production of biofuels. In this context, the objective of the present work was to evaluate three different methods of oil extraction: solvent extraction, cold pressing and swelling technique, to evaluate the potential of radish oil in biodiesel production using methanol, ethanol and a mixture of both containing 60% and 40% respectively, and to evaluate the composition of fatty acids. The methodology consists firstly in the extraction of the oil, followed by transesterification reaction using 10 mL of pretreated oil and sodium hydroxide in the proportion of 1% in mass, relative to the oil. The oil samples were used in the transesterification reactions with methanol, ethanol and a mixture of methanol (60%) and ethanol (40%) in different proportions and temperatures. The results indicated that, for the oil extraction processes, the seed swelling technique presented a high extraction yield (34%). The composition of fatty acids showed presence of approximately 30% of saturated compounds and around 50% of compounds with chain up to 18 carbons, also had presence of erucic acid (up to 41%), and a high percentage of oleic acid (up to 30%). Regarding the transesterification reactions, the highest yield occurred with the use of methanol, about 86%. Thus, in the light of the results, it can be concluded that radish oil has great potential for biodiesel production, but, other analyzes, such as acidity and flash point, should be performed to more specifically evaluate the physicochemical characteristics of biodiesel.