Category: esters-buliding-blocks

Liu, Xing published the artcileEffect of mixed fermentation with Pichia fermentans, Hanseniaspora uvarum, and Wickeramomyces anomala on the quality of fig (Ficus carica L.) wines, Computed Properties of 106-32-1, the main research area is fermentation Pichia fermentans Hanseniaspora uvarum Wickeramomyces anomala fig wine.

This study aimed at evaluating the quality of fig wines that co-fermented by three non-Saccharomyces. Four suitable ratios were selected for co-fermentation, and the fermentation performance of fig wines was compared with fig juice and the pure fermentation of Saccharomyces. High performance liquid chromatog. was used to analyze organic acids and mono-phenols in fig wines, and the amino acid analyzer was used to detect free amino acids. The results showed that fig wines fermented by non-Saccharomyces had higher contents of organic acids and mono-phenols. Head space solid phase microextraction method and analyzed by gas chromatog. mass spectrometry was used to detect 48 aroma compounds in fig wines, and the results revealed that co-fermentation by non-Saccharomyces could obtain up to 38 aroma compounds, which was superior to 30 substances obtained from fermentation by Saccharomyces. Principal component anal. was used to detect pos. correlations between samples and aroma compounds The results showed that there were significant differences in the aroma compounds in the different samples. Non-Saccharomyces played an important role in the aroma and flavor of fruit wine, and were used as an auxiliary starter culture to improve the effect of Saccharomyces fermentation The research on non-Saccharomyces in the literature was limited to the use of non-Saccharomyces alone for fermentation, and the fermentation performance was much worse than Saccharomyces. In this study, three non-Saccharomyces were selected for co-fermentation The result revealed that pleasant fig wine could be obtained by co-fermentation of non-Saccharomyces without a Saccharomyces starter culture, which provided a significant reference for the subsequent research on non-Saccharomyces and fig wines.

Journal of Food Processing and Preservation published new progress about Amino acids Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 106-32-1 belongs to class esters-buliding-blocks, name is Ethyl octanoate, and the molecular formula is C10H20O2, Computed Properties of 106-32-1.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Mishchenko, Natalia P. published the artcileAntiviral potential of sea urchin aminated spinochromes against herpes simplex virus type 1, Category: esters-buliding-blocks, the main research area is Echinarachnius echinochrome echinamine herpes simplex virus infection; Vero cells; echinamine A; echinamine B; echinochrome A; glycoprotein gD; herpes simplex virus type 1; molecular docking.

Herpes simplex virus type 1 (HSV-1) is one of the most prevalent pathogens worldwide requiring the search for new candidates for the creation of antiherpetic drugs. The ability of sea urchin spinochromes-echinochrome A (EchA) and its aminated analogs, echinamines A (EamA) and B (EamB)-to inhibit different stages of HSV-1 infection in Vero cells and to reduce the virus-induced production of reactive oxygen species (ROS) was studied. We found that spinochromes exhibited maximum antiviral activity when HSV-1 was pretreated with these compounds, which indicated the direct effect of spinochromes on HSV-1 particles. EamB and EamA both showed the highest virucidal activity by inhibiting the HSV-1 plaque formation, with a selectivity index (SI) of 80.6 and 50.3, resp., and a reduction in HSV-1 attachment to cells (SI of 8.5 and 5.8, resp.). EamA and EamB considerably suppressed the early induction of ROS due to the virus infection. The ability of the tested compounds to directly bind to the surface glycoprotein, gD, of HSV-1 was established in silico. The dock score of EchA, EamA, and EamB was -4.75, -5.09, and -5.19 kcal/mol, resp., which correlated with the SI of the virucidal action of these compounds and explained their ability to suppress the attachment and penetration of the virus into the cells.

Marine Drugs published new progress about Amino acids Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 2044-85-1 belongs to class esters-buliding-blocks, name is 2′,7′-Dichloro-3-oxo-3H-spiro[isobenzofuran-1,9′-xanthene]-3′,6′-diyl diacetate, and the molecular formula is C24H14Cl2O7, Category: esters-buliding-blocks.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Kamiyoshihara, Yusuke published the artcileFunctional divergence of principal alcohol o-acyltransferase for biosynthesis of volatile acetate esters among tomato wild species (Solanum Sect. Lycopersicon), Product Details of C9H10O2, the main research area is AAT1 acetate ester Solanum Lycopersicon; Alcohol o-acyltransferase; Fruit flavor; Lycopersicon; Tomato wild species; Volatile esters.

Volatile esters are the chems. that have multiple physiol. functions including plant defense responses and reproduction From a human perspective, the esters largely contribute to the fruity aroma of freshy fruits. Composition of volatile esters show a significant diversity among the wild tomato species (Solanum sect. Lycopersicon). To address the basis for this divergence, here we conducted functional anal. of a gene encoding major alc. o-acyltransferase (AAT1) that catalyzes volatile ester formation. Although AAT1 transcripts were highly expressed in the ripe fruits of all the wild species examined, their enzymic properties significantly differed due to amino acid sequence variations. Notably, AAT1s from S. pennellii showed the highest ability to produce acetate esters whereas AAT1s from S. neorickii, S. chmielewskii and S. habrochaites had the lowest activities. Further, screenings using domain-swapped or point-mutated AAT1s allowed us to identify Met/Thr352 as one of the critical residues related to the transferase activity with acetyl-CoA. This finding is potentially applied to aroma engineering in which a site-directed mutagenesis at this position in alc. o-acyltransferases could enable to manipulate volatile ester levels in ripe fruits.

Plant Science (Shannon, Ireland) published new progress about Amino acids Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 140-11-4 belongs to class esters-buliding-blocks, name is Benzyl acetate, and the molecular formula is C9H10O2, Product Details of C9H10O2.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Ramadan, Nehal S. published the artcileNutrient and sensory metabolites profiling of Averrhoa Carambola L. (starfruit) in the context of its origin and ripening stage by GC/MS and chemometric analysis, COA of Formula: C9H18O2, the main research area is Averrhoa nutrient sensory metabolite ripening GC MS; A. Carambola L.; GC-MS; Oxalidaceae; SPME; diabetes type-2; primary metabolites; volatiles.

Averrhoa carambola L. is a tropical tree with edible fruit that grows at different climatic conditions. Despite its nutritive value and reported health benefits, it is a controversial fruit owing to its rich oxalate content. The present study aimed at investigating aroma and nutrient primary metabolites distribution in A. carambola fruits grown in Indonesia, Malaysia (its endemic origin) vs. Egypt, and at different ripening stages. Two techniques were employed to assess volatile and non-volatile metabolites including headspace solid-phase micro-extraction (HS-SPME) joined with gas chromatog. coupled with mass-spectrometry (GC-MS) and GC-MS post silylation, resp. Twenty-four volatiles were detected, with esters amounting for the major class of volatiles in Egyptian fruit at ca. 66%, with Me caproate as the major component, distinguishing it from other origins. Primary metabolites profiling led to the identification of 117 metabolites viz. sugars, polyols and organic acids. Fructose (38-48%) and glucose (21-25%) predominated sugar compositions in ripe fruits, whereas sorbitol was the major sugar alc. (2.4-10.5%) in ripe fruits as well. Oxalic acid, an anti-nutrient with potential health risks, was the major organic acid detected in all the studied fruits (1.7-2.7%), except the Malaysian one (0.07%). It increases upon fruit ripening, including considerable amounts of volatile oxalate esters detected via SPME, and which must not be omitted in total oxalate determinations for safety assessments.

Molecules published new progress about Amino acids Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 111-11-5 belongs to class esters-buliding-blocks, name is Methyl octanoate, and the molecular formula is C9H18O2, COA of Formula: C9H18O2.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Wang, Changrong published the artcileCadmium-resistant rhizobacterium Bacillus cereus M4 promotes the growth and reduces cadmium accumulation in rice (Oryza sativa L.), Safety of Ethyl 3-hydroxybutanoate, the main research area is cadmium soil contamination rhizobacterium rice; Bacillus cereus; Cadmium; Metabolite; Oryza sativa.

Rice farmland cadmium pollution is an increasing problem for food safety. Cd-resistant bacterial strain was isolated from rice rhizosphere soil and identified as Bacillus cereus M4. Treatment with M4 fermentation broth increased rice seedlings growth in vermiculite, while reduced Cd accumulation in grains of rice grown in Cd-contaminated potted soil from 0.309 to 0.186 mg/kg. Indoleacetic acid (IAA) was detected in M4 metabolites and in potted soil solutions supplemented with M4 broth. M4 broth increased the abundance of Bacillus from 0.54% to 0.95% and changed the soil bacterial community composition These findings indicate that M4 promotes rice growth by secreting IAA and altering the rhizospheric soil microenvironment, via soil solution composition and microbial community, which may affect Cd translocation from soil to rice roots, thereby decreasing grain Cd accumulation. Therefore, B. cereus M4 is potentially suitable for the bioremediation of Cd-contaminated paddy soils.

Environmental Toxicology and Pharmacology published new progress about Amino acids Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 5405-41-4 belongs to class esters-buliding-blocks, name is Ethyl 3-hydroxybutanoate, and the molecular formula is C6H12O3, Safety of Ethyl 3-hydroxybutanoate.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Thompson-Witrick, Katherine A. published the artcileNitrogen Content in Craft Malts: Effects on Total Ester Concentration in Beer, Name: Ethyl octanoate, the main research area is nitrogen amino acid total ester beer.

Malt is an essential ingredient in beer; not only because it provides yeast with essential nutrients such as amino acids and fermentable sugars, it also adds to the beer’s color, body and flavor. The objective of this project was to look at the initial concentration of total nitrogen (TN) found within base malts of different varietal and cultivar origins and its impact on the esters produced in beers made using these malts. The exptl. beer was brewed with a target OG of 10° Plato wort using five different base malts; four of which were produced by independent craft maltsters (Texas, Oregon, Indiana, and Canada) and a macro-industrial produced malt served as the control. TN and free amino nitrogen (FAN) were analyzed and compared with volatile and semi-volatile flavor anal. in order to identify correlations between nitrogen concentration and ester development within the final beer. One-way ANOVA coupled with a Tukey HSD paired comparison test was run to determine statistical differences in TN and FAN, while Kruskal-Wallis one-way anal. of variance test was utilized to determine statistical differences between total esters production TN wort values ranged from 627 to 909 mg/L, while FAN wort values ranged from 191 to 467 mg FAN/L. There were statistical differences seen between all of the beers in total ester production The beers produced with malts of higher TN resulted in greater ester production From this, one can conclude that there is a correlation between a malt’s TN and esters produced in the final beer product.

Journal of the American Society of Brewing Chemists published new progress about Amino acids Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 106-32-1 belongs to class esters-buliding-blocks, name is Ethyl octanoate, and the molecular formula is C10H20O2, Name: Ethyl octanoate.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Thompson-Witrick, Katherine A. published the artcileNitrogen Content in Craft Malts: Effects on Total Ester Concentration in Beer, Product Details of C11H22O2, the main research area is nitrogen amino acid total ester beer.

Malt is an essential ingredient in beer; not only because it provides yeast with essential nutrients such as amino acids and fermentable sugars, it also adds to the beer’s color, body and flavor. The objective of this project was to look at the initial concentration of total nitrogen (TN) found within base malts of different varietal and cultivar origins and its impact on the esters produced in beers made using these malts. The exptl. beer was brewed with a target OG of 10° Plato wort using five different base malts; four of which were produced by independent craft maltsters (Texas, Oregon, Indiana, and Canada) and a macro-industrial produced malt served as the control. TN and free amino nitrogen (FAN) were analyzed and compared with volatile and semi-volatile flavor anal. in order to identify correlations between nitrogen concentration and ester development within the final beer. One-way ANOVA coupled with a Tukey HSD paired comparison test was run to determine statistical differences in TN and FAN, while Kruskal-Wallis one-way anal. of variance test was utilized to determine statistical differences between total esters production TN wort values ranged from 627 to 909 mg/L, while FAN wort values ranged from 191 to 467 mg FAN/L. There were statistical differences seen between all of the beers in total ester production The beers produced with malts of higher TN resulted in greater ester production From this, one can conclude that there is a correlation between a malt’s TN and esters produced in the final beer product.

Journal of the American Society of Brewing Chemists published new progress about Amino acids Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 123-29-5 belongs to class esters-buliding-blocks, name is Ethyl nonanoate, and the molecular formula is C11H22O2, Product Details of C11H22O2.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Yamaga, Hiroaki published the artcileAmino acid derivative reactivity assay-organic solvent reaction system: A novel alternative test for skin sensitization capable of assessing highly hydrophobic substances, Related Products of esters-buliding-blocks, the main research area is amino acid reactivity assay organic solvent skin sensitization; alternative to animal testing; amino acid derivative reactivity assay-organic solvent (ADRA-OS) reaction system; in chemico; octanol/water partition coefficient (logKow); skin sensitization.

The amino acid derivative reactivity assay (ADRA) is an in chemico alternative to animal testing that focuses on protein binding. The ADRA is a skin sensitization test that solves problems associated with the direct peptide reactivity assay. However, when utilizing the ADRA to evaluate highly hydrophobic substances with octanol/water partition coefficients (logKow) of >6, the test substances may not dissolve in the reaction solution, which can prevent the accurate assessment of skin sensitization. Therefore, we developed the ADRA-organic solvent (ADRA-OS) reaction system, which is a novel skin sensitization test that enables the assessment of highly hydrophobic substances with a logKow of >6. We discovered that the organic solvent ratio, the triethylamine concentration, and the EDTA disodium salt dihydrate concentration participate in reactions with the nucleophile N-(2-(1-naphthyl)acetyl)-L-cysteine (NAC) and sensitizers that are used in ADRA and in stabilizing NAC. Thus, we determined the optimal reaction composition of the ADRA-OS according to L9 (33) orthogonal array experiments Using this test, we assessed 14 types of highly hydrophobic substances. When we compared the results with ADRA, we found that ADRA-OS reaction system has high solubility for highly hydrophobic substances and that it has a high predictive capacity (sensitivity: 63%, specificity: 100%, accuracy: 79%). The implication of the results is that the novel ADRA-OS reaction system should provide a useful method for assessing the skin sensitization of highly hydrophobic substances with a logKow of >6.

Journal of Applied Toxicology published new progress about Amino acids Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 142-90-5 belongs to class esters-buliding-blocks, name is Dodecyl 2-methylacrylate, and the molecular formula is C16H30O2, Related Products of esters-buliding-blocks.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Li, Xinzhi published the artcileEffect of thermal treatment on aroma compound formation in yeast fermented pork hydrolysate supplemented with xylose and cysteine, Application In Synthesis of 123-29-5, the main research area is xylose cysteine thermal treatment aroma yeast fermented pork hydrolyzate; Maillard reaction; cysteine; pork by-product; volatile flavour compounds; xylose; yeast fermentation.

The present study has revealed an innovative method of coupling enzyme hydrolysis, yeast fermentation and thermal treatment to transform pork trimmings into a seasoning product. The pork trimmings were first enzymically hydrolyzed and fermented into liquid pork hydrolyzates, followed by adding xylose and cysteine, then heat treatment. Approx. 28% of xylose and 7% of glucose were consumed, and amino acids increased by around 31% after thermal treatment. The heated yeast fermented pork hydrolyzates possessed a characteristic ′savoury, roasted-meat and fruity sweet′ aroma as a result of the formation of thermally induced sulfur-containing volatiles such as 2-furfurylthiol, as well as retention of yeast generated esters including isoamyl acetate and hexyl acetate. The heat-treated fermented pork hydrolyzates impart an attractive and innovative aroma because of yeast fermentation and heat treatment. The innovative heated fermented pork hydrolyzates could be further processed into a nutritional and savoury pork broth and/or a meat sauce. 2021 Society of Chem. Industry.

Journal of the Science of Food and Agriculture published new progress about Amino acids Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 123-29-5 belongs to class esters-buliding-blocks, name is Ethyl nonanoate, and the molecular formula is C11H22O2, Application In Synthesis of 123-29-5.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Li, Xinzhi published the artcileEffect of thermal treatment on aroma compound formation in yeast fermented pork hydrolysate supplemented with xylose and cysteine, Category: esters-buliding-blocks, the main research area is xylose cysteine thermal treatment aroma yeast fermented pork hydrolyzate; Maillard reaction; cysteine; pork by-product; volatile flavour compounds; xylose; yeast fermentation.

The present study has revealed an innovative method of coupling enzyme hydrolysis, yeast fermentation and thermal treatment to transform pork trimmings into a seasoning product. The pork trimmings were first enzymically hydrolyzed and fermented into liquid pork hydrolyzates, followed by adding xylose and cysteine, then heat treatment. Approx. 28% of xylose and 7% of glucose were consumed, and amino acids increased by around 31% after thermal treatment. The heated yeast fermented pork hydrolyzates possessed a characteristic ′savoury, roasted-meat and fruity sweet′ aroma as a result of the formation of thermally induced sulfur-containing volatiles such as 2-furfurylthiol, as well as retention of yeast generated esters including isoamyl acetate and hexyl acetate. The heat-treated fermented pork hydrolyzates impart an attractive and innovative aroma because of yeast fermentation and heat treatment. The innovative heated fermented pork hydrolyzates could be further processed into a nutritional and savoury pork broth and/or a meat sauce. 2021 Society of Chem. Industry.

Journal of the Science of Food and Agriculture published new progress about Amino acids Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 106-32-1 belongs to class esters-buliding-blocks, name is Ethyl octanoate, and the molecular formula is C10H20O2, Category: esters-buliding-blocks.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics