Tag: M.W=150-200

Wang, Zhen published the artcileChiral derivatives of covalent organic framework TpBD (NH2)2 used as stationary phases in gas chromatography, Name: Methyl decanoate, the main research area is covalent organic framework chiral derivative stationary phase gas chromatog; (1S)-(+)-10-camphorsulfonyl chloride; L-hydroxyproline; L-valine trifluoroacetyl derivative; chiral covalent organic framework; chiral stationary phases; gas chromatography.

Chiral covalent organic framework materials have many excellent properties, which have received much attention in the field of separation Synthesized the covalent organic framework COF-TpBD (NH2)2 modified, resp., by L-valine trifluoroacetyl derivative, L-hydroxyproline, and (1S)-(+)-10-camphorsulfonyl chloride, three capillary columns of chiral covalent organic framework materials were obtained for gas chromatog. Those columns are able to sep. some chiral compounds, positional isomers, n-alkanes, n-alcs., aromatic hydrocarbon mixture, and Grob’s reagents. They are complementary to other chiral capillary columns and are possible for potential applications.

Chirality published new progress about Alkanes Role: PEP (Physical, Engineering or Chemical Process), PUR (Purification or Recovery), PROC (Process), PREP (Preparation). 110-42-9 belongs to class esters-buliding-blocks, name is Methyl decanoate, and the molecular formula is C11H22O2, Name: Methyl decanoate.

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

Ano, Yusuke published the artcilePalladium-catalyzed 1,1-alkynylbromination of alkenes with alkynyl bromides, Product Details of C10H10O2, the main research area is propargylic bromide preparation regioselective; alkynyl bromide terminal alkene alkynylbromination palladium catalyst.

The palladium-catalyzed 1,1-alkynylbromination of terminal alkenes RC=CH2 (R = Ph, naphthalen-2-yl, 1-benzofuran-2-yl, etc.) with a (bromoethynyl)triisopropylsilane is reported. The method tolerates a diverse range of alkenes to afford propargylic bromides RCH2CH(Br)CCSi(CH(CH3)2)3 regioselectively. Mechanistic studies and DFT calculations indicate that the 1,1-alkynylbromination reaction proceeds via the migration of the Pd center followed by the formation of a π-allenyl Pd intermediate, leading to the stereoselective reductive elimination of the C(sp3)-Br bond at the propargylic position.

Chemical Science published new progress about Bromination catalysts. 583-04-0 belongs to class esters-buliding-blocks, name is Allyl benzoate, and the molecular formula is C10H10O2, Product Details of C10H10O2.

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

Hranilovic, Ana published the artcileImpact of Lachancea thermotolerans on chemical composition and sensory profiles of Merlot wines, Synthetic Route of 106-32-1, the main research area is Lachancea Saccharomyces merlot sugar ethanol ethyl lactate malic acid; Ethyl lactate; Fermentation; Lachancea thermotolerans; Lactic acid; RATA sensory analysis; Wine acidification; Wine aroma.

Wines from warm(ing) climates often contain excessive ethanol but lack acidity. The yeast Lachancea thermotolerans can ameliorate such wines due to partial conversion of sugars to lactic acid during alc. fermentation This study compared the performance of five L. thermotolerans strains in two inoculation modalities (sequential and co-inoculation) to Saccharomyces cerevisiae and un-inoculated treatments in high sugar/low acidity Merlot fermentations The pH and ethanol levels in mixed-culture dry wines were either comparable, or significantly lower than in controls (decrease of up to 0.5 units and 0.90% volume/volume, resp.). The anal. of volatile compounds revealed marked differences in major flavor-active yeast metabolites, including up to a thirty-fold increase in Et lactate in certain L. thermotolerans modalities. The wines significantly differed in acidity perception, alongside 18 other sensory attributes. Together, these results highlight the potential of some L. thermotolerans strains to produce fresher wines with lower ethanol content and improved flavor/balance.

Food Chemistry published new progress about Fermentation. 106-32-1 belongs to class esters-buliding-blocks, name is Ethyl octanoate, and the molecular formula is C10H20O2, Synthetic Route of 106-32-1.

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

Filannino, Pasquale published the artcileVolatilome and bioaccessible phenolics profiles in lab-scale fermented bee pollen, Recommanded Product: Methyl octanoate, the main research area is fermented bee pollen volatilome bioaccessible phenolics; fermentation; flavonoids; lactic acid bacteria; phenolics; pollen; volatile compounds.

Bee-collected pollen (BCP) is currently receiving increasing attention as a dietary supplement for humans. In order to increase the accessibility of nutrients for intestinal absorption, several biotechnol. solutions have been proposed for BCP processing, with fermentation as one of the most attractive. The present study used an integrated metabolomic approach to investigate how the use of starter cultures may affect the volatilome and the profile of bioaccessible phenolics of fermented BCP. BCP fermented with selected microbial starters (Started-BCP) was compared to spontaneously fermented BCP (Unstarted-BCP) and to unprocessed raw BCP (Raw-BCP). Fermentation significantly increased the amount of volatile compounds (VOC) in both Unstarted- and Started-BCP, as well as modifying the relative proportions among the chem. groups. Volatile free fatty acids were the predominant VOC in Unstarted-BCP. Started-BCP was differentiated by the highest levels of esters and alcs., although volatile free fatty acids were always prevailing. The profile of the VOC was dependent on the type of fermentation, which was attributable to the selected Apilactobacillus kunkeei and Hanseniaspora uvarum strains used as starters, or to the variety of yeasts and bacteria naturally associated to the BCP. Started-BCP and, to a lesser extent, Unstarted-BCP resulted in increased bioaccessible phenolics, which included microbial derivatives of phenolic acids metabolism

Foods published new progress about Aldehydes Role: BSU (Biological Study, Unclassified), PUR (Purification or Recovery), BIOL (Biological Study), PREP (Preparation). 111-11-5 belongs to class esters-buliding-blocks, name is Methyl octanoate, and the molecular formula is C9H18O2, Recommanded Product: Methyl octanoate.

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

Filannino, Pasquale published the artcileVolatilome and bioaccessible phenolics profiles in lab-scale fermented bee pollen, Synthetic Route of 123-29-5, the main research area is fermented bee pollen volatilome bioaccessible phenolics; fermentation; flavonoids; lactic acid bacteria; phenolics; pollen; volatile compounds.

Bee-collected pollen (BCP) is currently receiving increasing attention as a dietary supplement for humans. In order to increase the accessibility of nutrients for intestinal absorption, several biotechnol. solutions have been proposed for BCP processing, with fermentation as one of the most attractive. The present study used an integrated metabolomic approach to investigate how the use of starter cultures may affect the volatilome and the profile of bioaccessible phenolics of fermented BCP. BCP fermented with selected microbial starters (Started-BCP) was compared to spontaneously fermented BCP (Unstarted-BCP) and to unprocessed raw BCP (Raw-BCP). Fermentation significantly increased the amount of volatile compounds (VOC) in both Unstarted- and Started-BCP, as well as modifying the relative proportions among the chem. groups. Volatile free fatty acids were the predominant VOC in Unstarted-BCP. Started-BCP was differentiated by the highest levels of esters and alcs., although volatile free fatty acids were always prevailing. The profile of the VOC was dependent on the type of fermentation, which was attributable to the selected Apilactobacillus kunkeei and Hanseniaspora uvarum strains used as starters, or to the variety of yeasts and bacteria naturally associated to the BCP. Started-BCP and, to a lesser extent, Unstarted-BCP resulted in increased bioaccessible phenolics, which included microbial derivatives of phenolic acids metabolism

Foods published new progress about Aldehydes Role: BSU (Biological Study, Unclassified), PUR (Purification or Recovery), BIOL (Biological Study), PREP (Preparation). 123-29-5 belongs to class esters-buliding-blocks, name is Ethyl nonanoate, and the molecular formula is C11H22O2, Synthetic Route of 123-29-5.

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

Filannino, Pasquale published the artcileVolatilome and bioaccessible phenolics profiles in lab-scale fermented bee pollen, Safety of Ethyl octanoate, the main research area is fermented bee pollen volatilome bioaccessible phenolics; fermentation; flavonoids; lactic acid bacteria; phenolics; pollen; volatile compounds.

Bee-collected pollen (BCP) is currently receiving increasing attention as a dietary supplement for humans. In order to increase the accessibility of nutrients for intestinal absorption, several biotechnol. solutions have been proposed for BCP processing, with fermentation as one of the most attractive. The present study used an integrated metabolomic approach to investigate how the use of starter cultures may affect the volatilome and the profile of bioaccessible phenolics of fermented BCP. BCP fermented with selected microbial starters (Started-BCP) was compared to spontaneously fermented BCP (Unstarted-BCP) and to unprocessed raw BCP (Raw-BCP). Fermentation significantly increased the amount of volatile compounds (VOC) in both Unstarted- and Started-BCP, as well as modifying the relative proportions among the chem. groups. Volatile free fatty acids were the predominant VOC in Unstarted-BCP. Started-BCP was differentiated by the highest levels of esters and alcs., although volatile free fatty acids were always prevailing. The profile of the VOC was dependent on the type of fermentation, which was attributable to the selected Apilactobacillus kunkeei and Hanseniaspora uvarum strains used as starters, or to the variety of yeasts and bacteria naturally associated to the BCP. Started-BCP and, to a lesser extent, Unstarted-BCP resulted in increased bioaccessible phenolics, which included microbial derivatives of phenolic acids metabolism

Foods published new progress about Aldehydes Role: BSU (Biological Study, Unclassified), PUR (Purification or Recovery), BIOL (Biological Study), PREP (Preparation). 106-32-1 belongs to class esters-buliding-blocks, name is Ethyl octanoate, and the molecular formula is C10H20O2, Safety of Ethyl octanoate.

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

Filannino, Pasquale published the artcileVolatilome and bioaccessible phenolics profiles in lab-scale fermented bee pollen, Application In Synthesis of 140-11-4, the main research area is fermented bee pollen volatilome bioaccessible phenolics; fermentation; flavonoids; lactic acid bacteria; phenolics; pollen; volatile compounds.

Bee-collected pollen (BCP) is currently receiving increasing attention as a dietary supplement for humans. In order to increase the accessibility of nutrients for intestinal absorption, several biotechnol. solutions have been proposed for BCP processing, with fermentation as one of the most attractive. The present study used an integrated metabolomic approach to investigate how the use of starter cultures may affect the volatilome and the profile of bioaccessible phenolics of fermented BCP. BCP fermented with selected microbial starters (Started-BCP) was compared to spontaneously fermented BCP (Unstarted-BCP) and to unprocessed raw BCP (Raw-BCP). Fermentation significantly increased the amount of volatile compounds (VOC) in both Unstarted- and Started-BCP, as well as modifying the relative proportions among the chem. groups. Volatile free fatty acids were the predominant VOC in Unstarted-BCP. Started-BCP was differentiated by the highest levels of esters and alcs., although volatile free fatty acids were always prevailing. The profile of the VOC was dependent on the type of fermentation, which was attributable to the selected Apilactobacillus kunkeei and Hanseniaspora uvarum strains used as starters, or to the variety of yeasts and bacteria naturally associated to the BCP. Started-BCP and, to a lesser extent, Unstarted-BCP resulted in increased bioaccessible phenolics, which included microbial derivatives of phenolic acids metabolism

Foods published new progress about Aldehydes Role: BSU (Biological Study, Unclassified), PUR (Purification or Recovery), BIOL (Biological Study), PREP (Preparation). 140-11-4 belongs to class esters-buliding-blocks, name is Benzyl acetate, and the molecular formula is C9H10O2, Application In Synthesis of 140-11-4.

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

Andreu-Coll, Lucia published the artcileVolatile composition of prickly pear fruit pulp from six Spanish cultivars, Related Products of esters-buliding-blocks, the main research area is Opuntia pulp volatile composition nonanol 1 hexanol; HS-SPME; Opuntia ficus-indica; alcohols; aldehydes; gas chromatography.

This research analyzed the volatile composition of the fruits pulp of six prickly pear cultivars (NT, NE, NO, NA, FR, and ORI) growing in Spain, by headspace solid-phase microextraction and gas chromatog. (GC-MS and GC-FID). A total of 35 compounds were isolated, identified, and quantified, with aldehydes, alcs., and terpenes being the predominant chem. families, and esters, ketones, linear hydrocarbons, and terpenoids being also found. Nonanol, 2,6-nonadienal, 1-hexanol, 2-hexenal, and D-limonene were the predominant compounds NT and FR cultivars showed the highest concentration of total volatile compounds On the other hand, NE and NO cultivars presented the lowest concentration Future studies on sensory evaluation are required to determine the sensory quality of the fruits of these Spanish cultivars.

Journal of Food Science published new progress about Aldehydes Role: BSU (Biological Study, Unclassified), PUR (Purification or Recovery), BIOL (Biological Study), PREP (Preparation). 106-32-1 belongs to class esters-buliding-blocks, name is Ethyl octanoate, and the molecular formula is C10H20O2, Related Products of esters-buliding-blocks.

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

Andreu-Coll, Lucia published the artcileVolatile composition of prickly pear fruit pulp from six Spanish cultivars, Safety of Methyl decanoate, the main research area is Opuntia pulp volatile composition nonanol 1 hexanol; HS-SPME; Opuntia ficus-indica; alcohols; aldehydes; gas chromatography.

This research analyzed the volatile composition of the fruits pulp of six prickly pear cultivars (NT, NE, NO, NA, FR, and ORI) growing in Spain, by headspace solid-phase microextraction and gas chromatog. (GC-MS and GC-FID). A total of 35 compounds were isolated, identified, and quantified, with aldehydes, alcs., and terpenes being the predominant chem. families, and esters, ketones, linear hydrocarbons, and terpenoids being also found. Nonanol, 2,6-nonadienal, 1-hexanol, 2-hexenal, and D-limonene were the predominant compounds NT and FR cultivars showed the highest concentration of total volatile compounds On the other hand, NE and NO cultivars presented the lowest concentration Future studies on sensory evaluation are required to determine the sensory quality of the fruits of these Spanish cultivars.

Journal of Food Science published new progress about Aldehydes Role: BSU (Biological Study, Unclassified), PUR (Purification or Recovery), BIOL (Biological Study), PREP (Preparation). 110-42-9 belongs to class esters-buliding-blocks, name is Methyl decanoate, and the molecular formula is C11H22O2, Safety of Methyl decanoate.

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

Sheng, Jie published the artcileComparative evaluation of the quality of red globe grape juice fermented by Lactobacillus acidophilus and Lactobacillus plantarum, Computed Properties of 106-32-1, the main research area is Lactobacillus grape juice quality fermentation ester octanoic acid aldehyde.

Basic anal., electronic senses and HS-SPME/GC-MS were used to evaluate the effects of single and mixed cultures of Lactobacillus acidophilus-26 and Lactobacillus plantarum-56 on the quality of fermented red globe grape (RGG) juice. The results showed that mixed culture fermentation was superior to single strain fermentation in terms of viable bacteria counts, consumption of total sugar (TS), total soluble solids, pH, functionality, and antioxidant properties of RGG juice (RGGJ). Whereas the aroma profiles of developing juices were dominated by abundant esters, acids, alcs., aldehydes, and aldehydes. Compared with the single inoculation, co-inoculation of the two species induced lactic acid fermentations, leading to accumulation of acetic acid, Et acetate, and 2-hexenol significantly. Moreover, higher concentrations of Et acetate, benzoic acid Et ester, octanoic acid, sorbic acid, 2-phenylethanol, and 2-hexenol represented the characteristic flavours of juices. To sum up, these findings suggested that L. acidophilus-26 and L. plantarum-56 could be used as fermented strains to ferment and improve the quality of RGGJ.

International Journal of Food Science and Technology published new progress about Alcohols Role: ANT (Analyte), BPN (Biosynthetic Preparation), ANST (Analytical Study), BIOL (Biological Study), PREP (Preparation). 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