Month: November 2022

On May 31, 2021, Wang, Lihua; Zhu, Lin; Zheng, Fuping; Zhang, Fengguo; Shen, Caihong; Gao, Xiaojuan; Sun, Baoguo; Huang, Mingquan; Li, Hehe; Chen, Feng published an article.Recommanded Product: 123-25-1 The title of the article was Determination and comparison of flavor (retronasal) threshold values of 19 flavor compounds in Baijiu. And the article contained the following:

Nineteen compounds, including ten esters, six acids, and three alcs., were characterized and considered as significant tastants and aromas in Baijiu (Chinese Liquor). The flavor (retronasal) threshold values (FTVs) of these 19 compounds were determined by the 10 samples test method in hydroalcoholic solutions (46% volume/volume in ethanol). The FTVs of the compounds were calculated based on the best estimate threshold method. All the FTVs determined by the professional Chinese Baijiu tasters were lower than those by the nonprofessional tasters. For instance, the detection (2.31 mg/kg) and recognition (11.74 mg/kg) values of Et hexanoate determined by the nonprofessional group were higher than the resp. corresponding values 0.44 and 3.80 mg/kg determined by the professional group. All of the odor activity values (OAVs) of Et valerate (OAV: 1176.00 to 2321.17), Et octanoate (OAV: 6841.20 to 7851.60), and 1-butanol (OAV: 26.78 to 39.72) in Gujinggong Baijiu were more than 10-fold larger than their dose-over-threshold values (DoTs), for which the DoTs of Et valerate, Et octanoate, and 1-butanol were 92.84 to 183.25, 180.03 to 206.62, 1.18 to 1.75, resp. On the contrary, the OAVs of Et heptanoate (OAV: 3.60 to 5.70) and isoamyl alc. (OAV: 1.18 to 1.57) were lower than their corresponding DoTs at 152.62 to 241.63 and 12.26 to 16.41. The results demonstrated that it is necessary to consider and compare their DoTs and OAVs simultaneously on evaluating the contribution of flavor compounds in Baijiu. Practical Application : Sensory evaluation of threshold values of various flavor compounds could be significantly affected by their existing matrix. Most of the published results of the flavor threshold value of compounds were determined from the matrix such as beer, whiskey, red wine, rather than Chinese Baijiu. The results of this work not only could provide valuable information for flavor studies of Chinese Baijiu but also give useful information for the Baijiu industry to quality control. The experimental process involved the reaction of Diethyl succinate(cas: 123-25-1).Recommanded Product: 123-25-1

The Article related to flavor baijiu, baijiu (chinese liquor), dose-over-threshold value, flavor compounds, flavor threshold value, sensory evaluation, Food and Feed Chemistry: Beverages and other aspects.Recommanded Product: 123-25-1

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Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

On August 1, 2021, Du, Jingyi; Li, Yueming; Xu, Jianchun; Huang, Mingquan; Wang, Juan; Chao, Jinfu; Wu, Jihong; Sun, Huibin; Ding, Haimei; Ye, Hong published an article.Name: Diethyl succinate The title of the article was Characterization of key odorants in Langyatai Baijiu with Jian flavour by sensory-directed analysis. And the article contained the following:

A study was carried out to determine systematically the key aroma-active compounds of Langyatai Baijiu with Jian flavor (LBJF) using sensory omics anal. (SOA). A total of 56 odorants were screened out using gas chromatog.-olfactometry-mass spectrometry (GC-O-MS)/Osme anal. Among them, 15 aroma-active components were first identified. After quantitation, 30 odorants had odor activity values (OAVs) > 1.0 in LBJF. Recombinant and omission experiments proved that the esters, alcs., acids, especially Et hexanoate, gamma-nonalactone, and di-Me trisulfide, were critical to the flavor of LBJF. The basic and com. liquors had obvious differences in the skeleton compositions of esters and acids. This study uncovers the characteristics of Jian flavor Baijiu (JFB) and provides a scientific basis for the quality control of JFB, which is helpful for the development of Chinese Baijiu flavor styles. The experimental process involved the reaction of Diethyl succinate(cas: 123-25-1).Name: Diethyl succinate

The Article related to langyatai baijiu jian flavor odorant sensory omics analysis, gc–o–ms, jian flavour baijiu, osme analysis, sensory omics analysis, Food and Feed Chemistry: Beverages and other aspects.Name: Diethyl succinate

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

On January 16, 2021, Balmaseda, Aitor; Rozes, Nicolas; Leal, Miguel Angel; Bordons, Albert; Reguant, Cristina published an article.Formula: C8H14O4 The title of the article was Impact of changes in wine composition produced by non-Saccharomyces on malolactic fermentation. And the article contained the following:

Non-Saccharomyces yeasts have increasingly been used in vinification recently. This is particularly true of Torulaspora delbrueckii and Metschnikowia pulcherrima, which are inoculated before S. cerevisiae, to complete a sequential alc. fermentation This paper aims to study the effects of these two non-Saccharomyces yeasts on malolactic fermentation (MLF) carried out by two strains of Oenococcus oeni, under cellar conditions. Oenol. parameters, and volatile and phenolic compounds were analyzed in wines. The wines were tasted, and the microorganisms identified. In general, non-Saccharomyces created more MLF friendly conditions, largely because of lower concentrations of SO2 and medium chain fatty acids. The most favorable results were observed in wines inoculated with T. delbrueckii, that seemed to promote the development of O. oeni and improve MLF performance. The experimental process involved the reaction of Diethyl succinate(cas: 123-25-1).Formula: C8H14O4

The Article related to oenococcus torulaspora saccharomyces wine malolactic fermentation, malolactic fermentation, non-saccharomyces, oenococcus oeni, wine, Food and Feed Chemistry: Beverages and other aspects.Formula: C8H14O4

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

On December 28, 2011, Gao, Lizhu; Hwang, Geum-Sook; Ryu, Do Hyun published an article.Reference of tert-Butyl 2-(4-nitrophenyl)acetate The title of the article was Oxazaborolidinium Ion-Catalyzed Cyclopropanation of α-Substituted Acroleins: Enantioselective Synthesis of Cyclopropanes Bearing Two Chiral Quaternary Centers. And the article contained the following:

A catalytic synthetic route to highly functionalized chiral cyclopropane derivatives was developed by Michael-initiated cyclopropanation of α-substituted acroleins with aryl- and alkyl diazoacetates. In the presence of chiral (S)-oxazaborolidinium cation I as a catalyst, the reaction proceeded in high yield (up to 93%) with high to excellent diastereoselectivity (up to 98% de) and enantioselectivity (up to 95% ee). The experimental process involved the reaction of tert-Butyl 2-(4-nitrophenyl)acetate(cas: 29704-38-9).Reference of tert-Butyl 2-(4-nitrophenyl)acetate

The Article related to alpha substituted acrolein diazoacetate chiral oxazaborolidinium catalyst cyclopropanation, cyclopropane stereoselective preparation, Alicyclic Compounds: Cyclopropanes and other aspects.Reference of tert-Butyl 2-(4-nitrophenyl)acetate

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

Porcu, Stefania; Luridiana, Alberto; Martis, Alberto; Frongia, Angelo; Sarais, Giorgia; Aitken, David J.; Boddaert, Thomas; Guillot, Regis; Secci, Francesco published an article in 2018, the title of the article was Acid-catalyzed synthesis of functionalized arylthio cyclopropane carbaldehydes and ketones.Related Products of 707-07-3 And the article contains the following content:

A general strategy for the synthesis of arylthio cyclopropyl carbaldehydes I (R = H, 4-Me, 3-Me, etc.) and ketones II (R = Et, Ph, n-Pr; R1 = H, Me, OBn) via a Bronsted acid catalyzed arylthiol addition/ring contraction reaction sequence has been exploited. The procedure led to a wide panel of cyclopropyl carbaldehydes in generally high yields and with broad substrate scope. Mechanistic aspects and synthetic applications of this procedure were investigated. The experimental process involved the reaction of (Trimethoxymethyl)benzene(cas: 707-07-3).Related Products of 707-07-3

The Article related to arylthio cyclopropyl carbaldehyde ketone preparation bronsted acid catalyst, arylthiol hydroxycyclobutanone ring contraction reaction, Alicyclic Compounds: Cyclopropanes and other aspects.Related Products of 707-07-3

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

On March 31, 2020, Somkuwar, R. G.; Sharma, A. K.; Kambale, Narayan; Banerjee, Kaushik; Bhange, M. A.; Oulkar, D. P. published an article.COA of Formula: C8H14O4 The title of the article was Volatome finger printing of red wines made from grapes grown under tropical conditions of India using thermal-desorption gas chromatography-mass spectrometry (TD-GC/MS). And the article contained the following:

The current study evaluated the key characters of aroma composition in diversified red wines (Cinsaut, Grenache, Cabernet Franc, Petit Verdot, Cabernet Sauvignon, Nielluccio, Tempranillo, Syrah, Merlot and Caladoc). Out of hundreds of volatile compounds 64 compounds were considered for study. Different groups consisting of fatty acids, volatile alcs., aldehydes, esters, volatile phenols and terpenes were analyzed using gas chromatog. mass spectrometry coupled with thermal desorption (TD-GC-MS). Among all these diversified classes, alcs. were found as the most dominant group followed by esters and acids whereas aldehydes, phenols and terpenes were found to be minor compounds Among the varieties, Nielluccio wine recorded highest concentration of total volatile compounds (191.53 mg/L) while, it was least in Caladoc wines (15.45 mg/L). The principal component anal. clearly differentiated Grenache wines based on their relationships between scores and their aroma composition followed by Nielluccio and Cinsuat wines. Out of sixty four compounds, only six aromatic compounds viz. butanediol, isoamyl actate, γ-Terpene, butanol, acetic acid and furfural have satisfying aroma descriptors with floral and fruity nuances and contribute to differentiate the Grenache wines from other varieties which have similar scores in PC1 anal. The cluster anal. also suggested that the wines in the same group (Cinsaut, Tempranillo and Syrah), (Cabernet Franc, Cabernet Sauvignon, Caladoc and Merlot) and (Nielluccio and Petit Verdot) had similar aroma characterization. Grenache wines were well differentiated from the sub group formed by other red varieties. The experimental process involved the reaction of Diethyl succinate(cas: 123-25-1).COA of Formula: C8H14O4

The Article related to red wine grape volatile compound thermal desorption gas chromatog, phenolics, red wine varieties, td–gc–ms, volatile compounds, wines, Food and Feed Chemistry: Beverages and other aspects.COA of Formula: C8H14O4

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

On September 30, 2021, Martinez-Garcia, Rafael; Mauricio, Juan Carlos; Garcia-Martinez, Teresa; Peinado, Rafael A.; Moreno, Juan published an article.Product Details of 123-25-1 The title of the article was Towards a better understanding of the evolution of odour-active compounds and the aroma perception of sparkling wines during ageing. And the article contained the following:

A native veil-forming yeast and a com. yeast strain were used to elaborate sparkling wines by the Champenoise method with a grape variety traditionally used for the production of still wines. Wines aged on lees for fifteen months were sampled at five points and their physicochem. and sensory indexes were analyzed. Unsupervised and supervised statistical techniques were used to establish a comparison between 81 volatile compounds and eight odor descriptors (chem., fruity, floral, fatty, balsamic, vegetal, empyreumatic and spicy). Principal component anal. of both datasets showed good separation among the samples in relation to ageing time and yeast strain. By using a partial least squares regression-based criterion, 38 odor active compounds were selected as the most influential for the ageing factor and out of them, only 27 were unique to certain aroma descriptors. These results contribute to a better understanding of the aroma perception of sparkling wines. The experimental process involved the reaction of Diethyl succinate(cas: 123-25-1).Product Details of 123-25-1

The Article related to volatile odor active compound sparkling wine ageing, aroma, chemometric, flor yeast, multivariate analysis, sensory profile, sparkling wine, Food and Feed Chemistry: Beverages and other aspects.Product Details of 123-25-1

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

On October 1, 2022, Ignacia Lambert-Royo, Maria; Ubeda, Cristina; Del Barrio-Galan, Ruben; Sieczkowski, Nathalie; Miquel Canals, Joan; Pena-Neira, Alvaro; Gil i Cortiella, Mariona published an article.Computed Properties of 123-25-1 The title of the article was The diversity of effects of yeast derivatives during sparkling wine aging. And the article contained the following:

This study shows the monitoring of the phys., chem. and sensorial changes that occur in the sparkling wine along 18 mo of aging due to different typol. yeast-derived products; dry inactivated yeast from Saccharomyces (Saccharomyces cerevisiae) and non-Saccharomyces (Torulaspora delbrueckii) yeast strains, yeast autolyzate, and yeast protein extract tested at two different doses. The addition of 5 g/hL yeast protein extract and inactivated yeast from T. delbrueckii helped to preserve esters in wines with 9 and 18 mo of aging on lees. The addition of yeast autolyzate achieved greater polysaccharide enrichment and gave rise to sparkling wines with the highest antioxidant activity. Effects on foaming properties were quite different depending on the aging time. Despite this, sparkling wines treated with 10 g/hL of yeast autolyzate and Optimum White generally exhibited the highest foamability and foam stability. Further experiments with higher doses are needed to observe clear effects on sensory profile. The experimental process involved the reaction of Diethyl succinate(cas: 123-25-1).Computed Properties of 123-25-1

The Article related to saccharomyces torulaspora sparkling wine aging, foaming, sensory analysis, sparkling wine, volatile compounds, wine aging, yeast derivatives, Food and Feed Chemistry: Beverages and other aspects.Computed Properties of 123-25-1

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

On May 30, 2022, Wang, Jiatong; Shi, Jiang; Zhu, Yin; Ma, Wanjun; Yan, Han; Shao, Chenyang; Wang, Mengqi; Zhang, Yue; Peng, Qunhua; Chen, Yuqiong; Lin, Zhi published an article.Category: esters-buliding-blocks The title of the article was Insights into crucial odourants dominating the characteristic flavour of citrus-white teas prepared from citrus reticulata Blanco ‘Chachiensis’ and Camellia sinensis ‘Fudingdabai’. And the article contained the following:

Citrus-white teas (CWs), which possess a balanced flavor of tea and citrus, are becoming more popular worldwide; however, their characteristic flavor and odourants received limited research. Volatile components of two types of CWs prepared from Citrus reticulata Blanco’Chachiensis’ and Camellia sinensis ‘Fudingdabai’ were comprehensively investigated using a combination of stir bar sorptive extraction and gas chromatog.-mass spectrometry (GC-MS). Ninety-nine crucial odourants in the CWs were quantified by applying GC-olfactometry/MS, significant differences were compared, and their odor activity values (OAVs) were calculated Twenty-two odourants (in total 2628.09 and 1131.18 mg/kg resp.) were further confirmed as traditional CW (CW-A) and innovated CW (CW-B) characteristic flavor crucial contributors which all possessed > 1 OAVs, particularly limonene (72919 in CW-A) and trans-β-ionone (138953 in CW-B). The unravelling of CWs aroma composition will greatly expanding our understanding of tea aroma chem. and the potential aroma interactions will offer insights into tea blending technologies. The experimental process involved the reaction of Methyl N-Methylanthranilate(cas: 85-91-6).Category: esters-buliding-blocks

The Article related to citrus camellia white tea odorant flavor, aroma quantification, characterized odourants, citrus-white tea, odour activity value, sbse-gc-o/ms, Food and Feed Chemistry: Beverages and other aspects.Category: esters-buliding-blocks

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

Gimenez-Banon, Maria Jose; Moreno-Olivares, Juan Daniel; Paladines-Quezada, Diego Fernando; Bleda-Sanchez, Juan Antonio; Fernandez-Fernandez, Jose Ignacio; Parra-Torrejon, Belen; Delgado-Lopez, Jose Manuel; Gil-Munoz, Rocio published an article in 2022, the title of the article was Effects of Methyl Jasmonate and Nano-Methyl Jasmonate Treatments on Monastrell Wine Volatile Composition.Electric Literature of 123-25-1 And the article contains the following content:

The application of Me jasmonate (MeJ) as an elicitor to enhance secondary metabolites in grapes and wines has been studied, but there is little information about its use in conjunction with nanotechnol. and no information about its effects on wine volatile compounds This led us to study the impact of nanoparticles doped with MeJ (Nano-MeJ, 1mM MeJ) on the volatile composition of Monastrell wines over three seasons, compared with the application of MeJ in a conventional way (10 mM MeJ). The results showed how both treatments enhanced fruity esters in wines regardless of the vintage year, although the increase was more evident when grapes were less ripe. These treatments also achieved these results in 2019 in the cases of 1-propanol, beta-phenyl-ethanol, and methionol, in 2020 in the cases of hexanol and methionol, and in 2021, but only in the case of hexanol. On the other hand, MeJ treatment also increased the terpene fraction, whereas Nano-MeJ, at the applied concentration, did not increase it in any of the seasons. In summary, although not all families of volatile compounds were increased by Nano-MeJ, the Nano-MeJ treatment generally increased the volatile composition to an extent similar to that obtained with MeJ used in a conventional way, but at a 10 times lower dose. Therefore, the use of nanotechnol. could be a good option for improving the quality of wines from an aromatic point of view, while reducing the necessary dosage of agrochems., in line with more sustainable agricultural practices. The experimental process involved the reaction of Diethyl succinate(cas: 123-25-1).Electric Literature of 123-25-1

The Article related to methyl jasmonate nanoparticle wine 1propanol beta phenylethanol methanol, aroma, elicitor, foliar application, nanoparticles, sensorial analysis, Food and Feed Chemistry: Beverages and other aspects.Electric Literature of 123-25-1

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