Fatty Oleic Acid Research Articles

Phytochemistry, Mineral Estimation, Nutritional, and the In Vitro Anti-Sickling Potentials of Oil Extracted from the Seeds of Mucuna Flagellipes

Abstract. Sickle cell disease is an inherited blood disorder indicative of red blood cells becoming sickle-shaped. The study investigated the in vitro anti-sickling potentials of the seed oil of M. flagellipes. The phytochemistry (fatty acids, vitamins, and minerals) was also determined using standard protocols. Finally, nutritional calculations on the oil were performed to determine its suitability for nutritional purposes. The result showed high zinc content (780 ± 2.50 µg/ 100 mg), while low iron content was observed (170 ± 1.30 µg/ 100 mg). Vitamin analysis showed the presence of vitamins A, E and K with values of 220 ± 1.60, 370 ± 2.20, and 197 ± 0.23 µg/100 mg respectively. The fatty acid profile revealed oleic (31.87 %) and linoleic (18.30 %) fatty acids as the major unsaturated fat in the oil, while palmitic fatty acid (5.91 %) was the major saturated fatty acid. Nutritional calculations showed high PUFA/SFA (2.07), MUFA/SFA (3.62), and UI (68.47). However, the index of thrombogenicity (0.07) and atherogenicity (0.11) was low in the seed oil. Finally, the in vitro anti-sickling potentials of the seed oil showed the oil inhibited and reversed sickling in a dose-dependent manner. Hbs polymerization was also inhibited and Fe2+/Fe3+ was upregulated following treatment with the seed oil. Collectively, the oil showed good anti-sickling potentials, which can be labelled to the presence of zinc, vitamins and unsaturated fat. The nutritional calculations suggest that the seed oil is cardio-friendly and does not pose any nutritional threat.

Connection of genetic blood markers with the level of fatty acids in the intramuscular fat of pigs

Using large white, Kemerovo, Duroc, Landrace, and Pietrain pigs, an analysis was carried out of the relationship between the level of fatty acids in the intramuscular fat of pigs and the polymorphism of blood groups by conducting an experiment and reviewing studies by scientists from different countries. The concentration of saturated (SFA), monounsaturated (MUFA), and polyunsaturated (PUFA) fatty acids were studied. A difference in the frequency of blood genotypes in animals with different levels of fatty acids was revealed. Thus, a significant difference was noted in the EA B system between the genotypes EA Ba/a and EA Ba/b in the content of arachidic C20:0 and heptadecenoic C17:1 fatty acid. In the EA D system, a similar difference was found between genotypes EA Da/b and EA Db/b in arachidic C20:0 and eicosandienoic C20:2 fatty acids. In the EA E system, an increased concentration of eicosadienoic C20:2 fatty acid was noted in pigs with the EA genotype E edg/edf, stearic C18:0, arachidic C20:0, palmitoleic C16:1, linoleic C18:2 – in pigs with the EA genotype Eaeg/edg. The EA G system contained significantly less arachidic C20:0 and eicosadienoic C20:2 fatty acids in individuals with the EA Ga/a genotype. A comparison of correlation coefficients allows us to state a high degree of positive correlation between margaric and heptadecenoic acids (r=+0.79), and a high degree of negative correlation was found between oleic and linoleic fatty acids (r= -0.94). The strength of the influence of blood group genotypes on the variability of several fatty acids ranges from 0.2 to 0.6. It is comparable to the effect of the breed factor on the variability of the assessed traits. These data can be used in breeding as candidates for genetic markers for selecting and selecting animals to improve the herd.

Synthesis and Characterization of Sulfonated Anionic Hyperbranched Polyglycerol Oleate Surfactant Based on Oleic Fatty Acid Palm Oil

Surfactant is a palm oil-based product that was rapidly developed. One type of surfactant with several advantages is anionic surfactant, known for its good emulsion, detergency, and thermal stability. The synthesis of this surfactant involved three steps: first, the polymerization of glycerol with a variable KOH catalyst (1%-4% w/v); second, the esterification of the polyglycerol with oleic acid; and finally, the sulfonation of polyglycerol oleate with H2SO4. The molecular weight of the obtained polyglycerol was determined using the Ostwald method, and the polymerization process was confirmed with FTIR. Polyglycerol oleate was characterized by determining the acid number, ester number, ion number, and saponification number, and confirmed using FTIR and 1H-NMR. Sulfonated polyglycerol oleate was characterized using FTIR and 1H-NMR.

Obtaining an Oily Ingredient Rich in PUFAS and Tocopherols and a High-Nutritional-Value Flour from Beans (Phaseolus vulgaris L.) by Supercritical CO2 Extraction.

The objective of this work was to carry out a preliminary study of the fractionation by supercritical CO2 (sc-CO2) extraction of two varieties of Peruvian beans (Phaseolus vulgaris L.), white (WB) and red (RB), to obtain two novel products: an oil rich in essential fatty acids and tocopherols and a defatted flour with high nutritional value and amino acids. The extraction temperature and pressure were optimized using the response surface methodology (RSM) and the extraction kinetics were optimized using the Spline equation. The results revealed that the best extraction conditions for WB and RB were 396.36 Bar, 40.46 °C, with an efficiency of 1.65%; and 391.995 Bar, 44.00 °C, with an efficiency of 1.12%, respectively. The WB and RB oils presented a high degree of polyunsaturation (63.2 and 52.8%, respectively), with oleic, linoleic, and linolenic fatty acids prevailing. Gamma-tocopherol was the predominant antioxidant in both oils. The residual flours (WB and RB) obtained after extraction with sc-CO2 had a high average content of proteins (23%), carbohydrates (61%), and minerals (3%). The limiting amino acids of WB were: Fen + Tyr, Leu, Lys, and in RB, only Leu was limiting. The viscosity of the solutions (20%) of the WB and RB flours mainly adjusted to the Waele's Ostwald model (r = 0.988). It is concluded that both products (oil and bean flour) obtained in an optimized manner using an eco-friendly technology with sc-CO2 have high nutrient and bioactive component content and can be used in the development of new ingredients and healthy foods of plant origin.

Influence of plant proteins blend or polydextrose on freeze-dried açaí (Euterpe oleracea) sorption isotherms and thermal properties

The influence of polydextrose or plant proteins blend, as a drying aid in freeze-dried açaí pulp, was evaluated regarding stability by vapor sorption isotherms at 20 °C in a water activity range of 0.1–0.95, obtained by vapor sorption analyzer and by saturated salt solutions, and the enthalpic properties were obtained by differential scanning calorimetry.The experimental isotherms data presented a good fit to the Peleg and Guggenheim-Anderson-de Boer (GAB) equations, açaí powder with polydextrose presented a Brunauer-Emmett-Teller (BET) type III, while the açaí powder without and with a plant proteins blend, type II. The freeze-dried açaí powders showed two endothermic peaks between −15 °C and 10 °C, probably related to linoleic and oleic fatty acids fusion. Fusion enthalpies of these peaks were lower when a carrier agent was used, which could be explained by a lower lipids content (25.0 J/g and 3.5 J/g for powder without the carrier and 12.0 J/g and 1.5 J/g for powder with plant proteins blend). The glass transition temperatures were between 49 °C and 58 °C, depending on the water activity, for powder without carriers and from 45 °C to 54 °C for the one with proteins.

Cellular and molecular alterations in a human hepatocellular in vitro model of nonalcoholic fatty liver disease development and stratification

The rapidly increasing incidence of nonalcoholic fatty liver disease (NAFLD) is a growing health crisis worldwide. If not detected early, NAFLD progression can lead to irreversible pathological states, including liver fibrosis and cirrhosis. Using in vitro models to understand the molecular pathogenesis has been extremely beneficial; however, most studies have utilized only short-term exposures, highlighting a limitation in current research to model extended fat-induced liver injury. We treated Hep3B cells continuously with a low dose of oleic and palmitic free fatty acids (FFAs) for 7 or 28 days. Transcriptomic analysis identified dysregulated molecular pathways and differential expression of 984 and 917 genes after FFA treatment for 7 and 28 days respectively. DNA methylation analysis of altered DNA methylated regions (DMRs) found 7 DMRs in common. Pathway analysis of differentially expressed genes (DEGs) revealed transcriptomic changes primarily involved in lipid metabolism, small molecule biochemistry, and molecular transport. Western blot analysis revealed changes in PDK4 and CPT1A protein levels, indicative of mitochondrial stress. In line with this, there was mitochondrial morphological change demonstrating breakdown of the mitochondrial network. This in vitro model of human NAFL mimics results observed in human patients and may be used as a pre-clinical model for drug intervention.

Flaxseed and avocado oil blends: Physical and physicochemical characterization, nutritional quality and oxidative stability

This research investigated the physical and physicochemical characteristics, nutritional quality, and oxidative stability of flaxseed oil (FO) and avocado oil (AO) and their blends. Five formulations, varying the mass ratio between AO and FO (AO: FO, 0 %:100 %; AO: FO, 25 %:75 %; AO: FO, 50 %:50 %; AO: FO, 75 %:25 %; AO:FO, 100 %:0 %) were analyzed by fatty acids composition, total content of chlorophylls and carotenoids, tocopherols content, antioxidant activity, physical properties, nutritional parameters, and quality parameters. The peroxide index (PI) and extinction coefficients (K232 and K270) were used to assess the oxidative stability. The results revealed that pure avocado oil presented an unbalanced ratio of ω6-ω3 fatty acids of 18.40:1. Flaxseed and avocado oil blends were able to balance ω6-ω3 fatty acids content and positively affected the atherogenicity and thrombogenicity index values. Adding avocado oil to flaxseed oil significantly increased the total content of chlorophyll and carotenoid and antioxidant activity. At the end of the oxidative stability analysis, a variation of the PI of 17.18 times was observed for pure flaxseed oil and 2.09 times for pure avocado oil. Variations of the PI remained below 1.7 times for all blends. Regarding K232 and K270, variations of 2.0 and 4.01 times were observed for pure flaxseed oil, respectively. On the other hand, values below 1.15 and 1.48 were verified for pure avocado and the blends, respectively. The increased oxidative stability could be related to increased monounsaturated and saturated fatty acids content (oleic, palmitic, and palmitoleic fatty acids) and natural antioxidants present in the oil blends.

Effect of Genotype-by-Environment Interaction on Oil and Oleic Fatty Acid Contents of Cultivated Peanuts

Twenty-seven genotypes of varieties and advanced breeding lines were grown in two locations in three years with three replications to estimate the effects of the genotype-by-environment interaction (G × E) on the oil and oleic fatty acid contents of cultivated peanuts. Oil and oleic fatty acid contents were quantified using NMR and GC, respectively. The tested lines were genotyped with functional SNP markers from the FAD2A and FAD2B genes using real-time PCR and classified into four genotypes. The results indicated that Alabama was the environment that better discriminated the test genotypes during the year 2012. Eight promising selected genotypes #12, #15, ARSOKR, Brantley, GaHO, M04-149, M04-48, and SunO97R showed wide adaptation and high-oleic acids of 83.02%, 81.32%, 82.03%, 81.15%, 79.21%, 80.94%, 82.46%, and 82.18%, respectively. The Additive Main Effects and Multiplicative Interaction (AMMI) model that combines the conventional analyses of variance for additive main effects with the principal component analysis (PCA) for the non-additive residuals was applied to estimate the additive effects from FAD2A and FAD2B genes and the G × E interaction. The results indicated significant G × E interactions for oleic fatty acid contents. No correlation between oil content and FAD2A and FAD2B genes was found. The FAD2B gene had a larger additive effect than the FAD2A gene. The results from this study may be useful not only for peanut breeders, but also for food processors and product consumers to select suitable cultivars.

Effect of protein-restricted diet during growing period on performance and carcass quality traits of Duroc x Iberian crossbred barrows under different management conditions

This study investigated the effects of feeding protein-restricted diets during the growing period on performance and carcass quality traits of Duroc (boars) x Iberian (sows) crossbred pigs slaughtered at commercial weight for local pig production. Two trials were conducted in different management conditions, with 28 and 33 barrows, respectively. In each trial, pigs were divided into two dietary groups, one group received a control diet (CD, 16.5 % crude protein, CP) and the other one was fed a protein restricted diet (PRD_1 for Trial 1: 12.4 % CP; and PRD_2 for Trial 2: 10.0 % CP). At 100 kg of body weight (BW), five pigs per group and trial were slaughtered, while the remaining pigs were fattened on a standard finishing diet until reaching 160 kg BW before slaughter. No significant changes in growth, carcass and ham composition or backfat thickness due to decreased protein supply during the growing period were observed. However, the intramuscular fat content increased in Longissimus thoracis et lumborum (LTL) and ham muscles of PDR_2 pigs. Furthermore, the backfat fatty acid (FA) profile presented higher proportion of oleic and monounsaturated FAs in pigs fed PRD diets, while polyunsaturated FA decreased in PDR_2 pigs. The PRD_1 group exhibited higher redness and thawing water loss in LTL, while PDR_2 group showed greater redness, yellowness and thawing water loss values compared to the CD group. Overall, the results indicate that feeding protein-restricted diets during growing period did not have a substantial impact on growth or meat quality. The success of implementing such diets may be influenced by factors such as the protein restriction level and the animal management conditions.

Lipid Enriched Reduced Nutrient Culture Medium Improves Bovine Blastocyst Formation.

The refinement of embryo culture media is essential in improving embryo viability and in vitro production efficiency. Our previous work demonstrated that the nutrients (carbohydrates, amino acids, and vitamins) in traditional culture media far exceed the need for an embryo and producing developmentally competent embryos in a reduced nutrient environment is feasible. Here, we aim to evaluate the impact of exogenous lipid and L-carnitine supplementation on bovine blastocyst development and refine our RN condition further. Zygotes were cultured in the control medium (100% nutrients) and reduced nutrient media containing 6.25% of the standard nutrient concentrations supplemented with L-carnitine and lipid free or lipid rich BSA. Increased blastocyst development was observed in the reduced nutrient lipid rich medium compared to the other two groups. However, in both reduced nutrient conditions, blastocyst cell numbers were lower than those obtained in the control condition. We then examined the expression level of 18 transcripts correlated with lipid metabolism, glucose metabolism, redox balance, and embryo quality, along with mitochondrial DNA copy numbers, ATP productions, and lipid profile. The results indicated lipid metabolism, embryo quality, and redox enzyme related genes were upregulated while glucose related gene was downregulated in embryos derived from reduced nutrient lipid rich condition Finally, we identified that the lipid rich BSA has enriched linoleic, stearic, oleic, palmitic, and alpha-linoleic fatty acids, a lipid profile that may contribute to the increased lipid metabolism and improved blastocyst development of the bovine embryos under the reduced nutrient condition.

Role of methyltransferase Set7 in obesity-related endothelial activation: functions beyond histone methylation

Abstract Introduction Obesity is associated with environmental changes such as hyperglycemia, hyperinsulinemia, inflammation, and elevated free fatty acids, all of which compromise endothelial function1,2. We have previously reported that in individuals with type 2 diabetes, lysine methyltransferase Set7 is involved in hyperglycemia-induced endothelial damage through monomethylation of histone 3 at lysine 4 (H3K4me1)3. Apart from such histone-driven epigenetic modulation, Set7-induced methylation of non-histone proteins is emerging as a novel mechanism underlying the (dys)regulation of many biological processes4. Purpose To investigate the role of Set7-related endothelial damage in cells exposed to different obesity-associated stimuli and to determine its impact on the protein methylome in these settings. Methods Human aortic endothelial cells (HAECs) were exposed to high concentrations of glucose, insulin, TNFa, or fatty acids (palmitate or oleate). Set7 overexpression, silencing, and inhibition studies were also performed in these cells. Gene and protein expression were assessed by RT-PCR and immunoblotting respectively, whereas production of the reactive oxygen species (ROS) was measured by electron spin resonance spectroscopy. Specific antibodies were used for the enrichment of lysine mono-, di-, and tri-methylated proteins and LC-MS/MS proteomic analysis was carried out for their identification. Results Each obesity model in HAECs increased the expression of nearly all the inflammatory markers tested and, except for TNFa, they also increased the expression of Set7. Significant changes in the global levels of H3K4me1, as well as of methylated proteins were also observed in these cells. Studies overexpressing a mutant form of Set7, which is lacking the SET domain, revealed that Set7 methyltransferase activity is required to define the protein methylome in HAECs. Similar results were obtained after Set7 silencing and inhibition. Despite no differences were observed in the production of ROS when modulating Set7 expression in HAECs, overexpression of an active form of Set7 and its silencing/inhibition resulted in a consistent up- and down-regulation, respectively, of several inflammatory mediators and adhesion molecules. Finally, proteomics analysis identified, for the first time, the protein methylome of endothelial cells, comprising almost 2,700 methylated proteins involved in essential biological processes such as RNA metabolism and cytoskeleton. Conclusions Our results indicate that Set7 may contribute to inflammatory changes in response to obesogenic insults. Moreover, our findings uncover a dual role of methyltransferase Set7 in governing the methylation of both histone and non-histone proteins in endothelial cells. These preliminary findings open a new field of research aiming to further elucidate the molecular mechanisms underlying the modulation of the protein methylome in the endothelium and its role in endothelial damage.

The role of the biochemical composition of soybean seeds in the tolerance to deterioration under natural and artificial aging

The fast decline in the physiological quality of seeds during storage is a serious problem. It is known that the reduction of seed quality may be related to its biochemical constitution. However, the relationship between the composition and the mechanisms linked to the loss of vigor of soybean seeds during aging has not been elucidated yet. Thus, the aim of this work was to analyze the role of the biochemical composition of soybean seeds in the physiological quality and in the tolerance to deterioration due to natural and artificial aging. Seeds of six soybean genotypes were analyzed initially and after being submitted to natural aging, storage for eight months, and artificial aging, using the temperature of 41 °C and 100 % relative humidity for 96 h. Moisture content, germination and vigor tests were carried out. Also, there were measured the content of oil, total protein, soluble protein, malonaldehyde, and fatty acids palmitic, stearic, oleic, linoleic, and linolenic. It was verified that the physiological quality of soybean seeds decreased with both kinds of aging. However, the deterioration process occurs by distinct mechanisms. The biochemical composition of the seeds is associated with the physiological quality and their storage potential is changed by natural and artificial aging. The tolerance of the seed to deterioration is related to soluble protein and fatty acids content. Oleic fatty acid and soluble protein can be used as indicators of physiological quality in soybean seeds.

Effect of cultivar and environment on chemical composition and geographical traceability of Spanish olive oils

AbstractThis study aimed to investigate the influence of cultivar and environment on the chemical composition of Arbequina and Empeltre olive oils, and their contribution to geographical identification of olive oils from Aragon. A total of 260 olive oil samples from different cultivars (Arbequina, Empeltre, Royal de Calatayud, Alquezrana, and Royeta de Asque) from the three main oil‐producing areas of Aragon, located in northeast Spain, were selected. Fatty acid and sterol composition were analyzed in the course of three crop years (2017, 2018, and 2019). Cultivar was found the main factor influencing the variability of palmitic, palmitoleic, and linolenic fatty acid content, whereas geographic origin was the main contributor to variation in oleic and linoleic fatty acids in Arbequina and Empeltre olive oils. Cultivar also had a significant impact on sterol composition, although the effect of the production area also showed a significant effect on these oils. Crop year showed limited relevance, except for oleic and linoleic fatty acids. The interaction between the environment (e.g., crop year and geographical factors) and the cultivar (Arbequina and Empeltre) exerted a significant influence on oleic/linoleic (O/L) ratio and Δ7‐stigmastenol content, particularly in the southeast area of Aragon during the crop year with higher temperatures and drier conditions. Principal component analysis (PCA) and discriminant analysis (DA) confirmed the discriminative potential of the geographic production zone as a factor enabling the differentiation of olive oils from Aragon based on the major fatty acids and sterols.

Chemical and biological evaluation of biosurfactant fractions from Wickerhamomyces anomalus CCMA 0358.

Biosurfactants (BS) are becoming a solution for today's world since they are considered a reasonable and eco-friendly option for use in products that require surfactants. This study aimed to evaluate the antibacterial activity of purified fractions containing biosurfactants produced by the yeast Wickerhamomyces anomalus CCMA 0358 using waste cooking oil (WCO) as substrate. Mixed fractions were separated and characterized by TLC, MPLC, GC-MS, LC-OMS, LC-SQMS, FTIR, 1H, 13C, DEPT 135, COSY, HSQC, and HMBC. The results confirmed the presence of palmitic acid and oleic acid fatty acids, derived from the core biosurfactant structure; however, the core could not be identified. The crude biosurfactant and its purified fractions were evaluated against pathogenic bacteria, and the purified fractions of the biosurfactant are more efficient at inhibitory and bactericidal activities than the crude biosurfactant. To the best of our knowledge, this is the first study that evaluated the antimicrobial activity of purified fractions of biosurfactants produced by the species Wickerhamomyces anomalus. Therefore, the purification of biosurfactants can emerge as an interesting alternative to increase the bioactivity of the compounds and ensure greater efficiency and biotechnological employability. KEY POINTS: • Successful production of a biosurfactant using a renewed carbon source. • Evaluation of the antimicrobial activity of purified fractions of BS. • Separated fractions of the BS are more efficient against bacteria than the crude BS.

Exploring the Antimicrobial Potential and Stability of Black Soldier Fly (Hermentia illucens) Larvae Fat for Enhanced Food Shelf-Life.

The larvae of the Black Soldier Fly (BSF, Hermetia illucens) have been introduced as one of the tools to create a circular economy model, which will be used in areas such as waste management and the treatment of industrial by-products to produce high-added-value food grade ingredients. The main aim of this research was to investigate the fat composition and antimicrobial activity against food pathogens and spoilers of Black Soldier Fly larvae. The research revealed that the Black Soldier Fly larvae fats are predominantly lauric fatty (40.93%), which are followed by palmitic, oleic, myristic, linolenic and palmitoleic fatty acids, accounting for 19.11, 17.34, 6.49, 8.79 and 3.89% of the fatty acid content, respectively. The investigation of the fats showed stability through a one-year monitoring period with no indication of chemical or microbiological spoilage. Different fat fractions were tested for antimicrobial activity, which showed efficiency against Candida albicans (the inhibition zone varied from 10.5 to 12.5 mm), Bacillus subtilis (from 12.5 to 16.5 mm), Staphylococcus aureus (12.5 mm) and Escherichia coli (10.0 mm). The inhibitory effect on Candida albicans was confirmed by shelf-life studies using larvae fat-based oleogel in a model food matrix. GraphPad Prism (ver. 8.0.1) was used for the statistical data processing. This research revealed the potential of Black Soldier Fly larvae fat as a very stable ingredient with promising antibacterial properties that can extend the product shelf-life in food matrixes even when used in relatively small amounts.

Multipronged Approach to Profiling Metabolites in Beta vulgaris L. Dried Pulp Extracts Using Chromatography, NMR and Other Spectroscopy Methods.

Beetroot (Beta vulgaris L.) is known for being a rich source of phytochemicals, minerals and vitamins. This study aims to show how the combination of extraction/chromatography/mass spectrometry and NMR offers an efficient way to profile metabolites in the extracts of beetroot. Such combination may lead to the identification of more nutritional or medicinal compounds in natural products, and it is essential for our ongoing investigation to study the selective adsorption/desorption of these metabolites' on/off nanoparticles. The aqueous and organic extracts underwent analyses using UV-vis spectroscopy; GC-MS; LC-MS; 1H, 13C, 31P, TOCSY, HSQC, and selective TOCSY NMR experiments. Polar Extract: The two forms of betalain pigment were identified by UV-vis and LC MS. Fourteen amino acids, sucrose, and other compounds, among which is riboflavin, were identified by LC-MS. Two-dimensional TOCSY showed the spin coupling correlations corresponding to some of these compounds. The HSQC spectrum showed 1H/13C spin correlation in sucrose, confirming its high abundance in beetroot. Organic Extract: GC-MS data enabled the identification of several compounds including six fatty acid methyl esters (FAME) with higher than, on average, 90% similarity score. Selective TOCSY NMR data showed the spin coupling pattern corresponding to oleic, linoleic, and linolenic fatty acids. 31P NMR spectra indicate that phospholipids exist in both the organic and aqueous phase.

Further investigation on fatty acids-based methacrylate monomers: High temperature radical polymerization for obtaining copolymers and their blends with medium-oil alkyd resin for coatings

Fatty acids-based methacrylate monomers have been studied as alternative renewable raw materials for the synthesis of poly(acrylate)s. In this research work, several poly(acrylate)s based on lauric, oleic, linoleic and tall oil fatty acids were obtained by high temperature solution polymerization since it is a process extensively used at industrial scale. The effect of the presence and increase of the aforementioned fatty acids-based methacrylate monomers on the conversion as a function of polymerization time and actual monomer composition in the copolymer were studied, thus inferring that the fatty acid chain length is of paramount importance for the final macromolecular features. The resulting poly(acrylate)s were evaluated as individual and blended with a medium-oil alkyd resin with the aim of balancing the advantages of both, such as low drying, mechanical performance, and chemical resistance, in order to indirectly produce economically viable resins for the industrial coating market.

A study of the effects of green stem syndrome on some quality parameters in soybean and the possibility of early detection

Green stem syndrome is one of the major problems encountered in soybean production in the world because it makes harvesting with a combine harvester difficult. Although the prevalence of the green stem syndrome Turkey is unknown, in recent years it has started to be observed frequently. Leaf color characters in the growing stages of some soybean varieties have been determined according to varieties in this study. Color changes in the leaves from V3 to R8 phase were monitored using L *, a *, b * color scale. Possibility of detecting changes in leaf color before the R8 stage was studied. Some quality parameters have been evaluated in seed samples obtained from plants with and without symptoms in the R8 stage. It was determined that the germination rate of the seeds obtained from the plants with the syndrome decreased by 61.4% on average compared to those from healthy plants. Furthermore, compared to non-symptomatic seeds, symptomatic seeds were larger, had a lower fat ratio, lower palmitic and linoleic fatty acid values, and higher oleic fatty acid values. At this study was determined that the most significant difference was manifested in terms of stem moisture values during germination and harvesting. In addition, detection of green stem syndrome can be used b* color value as a marker. The hypothesis of the study is that the syndrome can be diagnosed at early stage by following color values in the soybean leaves. In the future studies the color of the leaf can also be a parameter available for the machine learning models.
 Keywords: Harvest stage, Glycine max (L.), green stem syndrome, leaf color, machine learning

Lipid Fractionation and Physicochemical Characterization of Carapa guianensis Seed Oil from Guyana

The seed oil of Carapa guianensis, known as crabwood oil (CWO), is distinguished for its medicinal and cosmetics applications, attributed to its bioactive components and lipid profile. CWO and its dry and solvent fractionation were studied, with a focus on physicochemical functionality and the partitioning of known bioactive compounds, such as limonoids and sterols. Important bioactive components, including limonoids and sterols, were partitioned depending on the fractionation method; in particular, there is a direct dependence on solvent polarity. There was a very strong solid fraction yield–solvent polarity with a high linear slope of −121.3%. The partitioning of the lipids is significant enough to drive measurable and predictable changes in the physical properties. Palmitic (P: C16:0) and oleic (O: C18:1) fatty acids account for about 60% of the total fatty acid composition of the TAGs of CWO and its fractions. The most abundant limonoid is methyl angolensate (from 28 to 39%), followed by Trichilin A (from 13% to 22%). Gedunin and Andirobin were more abundant in the liquid fractions, whereas Carapanolides (less than 1.3%) were more present in the olein fractions. The crystallization and melting temperatures of the solid fractions were up to 26 °C, compared to 11 °C for CWO, and were particularly strongly correlated to the polarity of the solvents. The SFC profile indicated semi-solid fats, with the solid fractions showing up to 19% at 18 °C, twice the SFC in CWO. The fractions demonstrated a wide range of distinguishable microstructures. The shapes include well-organized spherulites and needle-like and rod-like crystals with sizes varying from 5 to 250 µ, suggesting that they are likely to have different flow characteristics and feel to the skin and mouth. There is a potential to make unique compositions with significantly different properties, with antimicrobial and antifungal efficacy due to the bioactive components of CWO through fractionation, using polarity as a predictive tool.

Nuclear protein-1 is the common link for pathways activated by aging and obesity in chondrocytes: A potential therapeutic target for osteoarthritis.

Pathways leading to osteoarthritis (OA) are diverse depending on the risk factors involved; thus, developing OA therapeutics has been challenging. Here we report that nuclear protein-1 (Nupr1), a stress-inducible protein/transcription factor, is activated by pathways associated with obesity and aging in chondrocytes. Treatment of human chondrocytes with free fatty acids (palmitate and oleate; a model for high-fat diet/obesity) induced PERK signaling and increased expression of caspase-3, TRB3, and Nupr1. On the other hand, treatment of chondrocytes with menadione (oxidative stress inducer) induced oxidation of IRE1, activated antioxidant response (higher Nrf2 expression), and increased expression of Nupr1 and matrix metalloproteinases. Experimental OA was induced by destabilization of the medial meniscus (DMM) in the knee joints of Nupr1+/+ and Nupr1-/- mice. Loss of Nupr1 expression reduced the severity of cartilage lesions in this model. Together, our findings suggest that Nupr1 is a common factor activated by signaling pathways activated by obesity (ER stress) and age (oxidative stress) and a potential drug target for OA resulting from various risk factors.