Enzymatic synthesis of butyrates of fusel oil

Gamayurova, V. S.; Шнайдер, К Л; Jamai, M.J.

doi:10.1134/s2070050417010068

Cited by 8 publications

(7 citation statements)

References 4 publications

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“…2). The process of esterification carried out in an organic solvent hexane, as it was shown earlier that it has the least inhibitory effect on enzyme preparations [6]. These data show that all the enzymes are capable effectively to catalyze process of etherification of propionic acid with butanol.…”

Section: Resultssupporting

confidence: 62%

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Comparison of Esterifying Ability of Some Lipases

Gamayurova¹,

Jamai²,

Zaripova³

et al. 2018

JACS

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The esterification activity of some commercial lipases was examined. The comparison of the enzymatic activities was carried out in regard to the synthesis of esters of lower aliphatic acids and alcohols. The highest esterifying ability was shown by the enzyme preparation Novozym 435 which quickly starts the process. The conversion of used acids was 70-82% within 0.5 hours, and reached 90% of conversion in 1 hour of reaction. Similar efficacy shows Novozym 40086. This enzyme preparation provides 90% conversion of the acids in two hours of process. The enzyme preparation Lipozyme TLIM provides conversion of the used acids on 84-90% in three hours of process. The enzyme preparation Lipozyme CALB is less effective on the used acids. Thus, in the synthesis of aliphatic esters the esterifying ability of enzyme preparations in the studied conditions decreases in a row: Novozym 435, Novozym 40086, Lipozyme TLIM, Lipozyme CALB. Pancreatic lipase in the synthesis of butyl butyrate detects an induction period of about 1 hour.

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Section: Resultssupporting

confidence: 62%

“…In recent years it has sharply increased interest in the enzymatic synthesis of esters of aliphatic acids and alcohols many of which are flavour substances widely used as flavorings in the food industry and perfumery, fragrances in detergent production [1][2][3][4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Comparison of Esterifying Ability of Some Lipases

Gamayurova¹,

Jamai²,

Zaripova³

et al. 2018

JACS

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“…Regarding the carboxylic (fatty) acid to alcohol molar ratio, shown in Table 2 as R, it is observed that, in most of the works reported, the synthesis of esters is favored with the increase of both reagent amounts. In some researches the increase was only in the FO amount 36,47,48,53 and in others only in carboxylic acid quantity. 14,15,43,49 In most cases, the increase in the reactants concentration tends to positively influence the reaction, shifting it to increased product formation.…”

Section: Fusel Oil (Fo)mentioning

confidence: 94%

“…11 FO has an unpleasant odor and dark brown coloration, 8 less dense than water, 14 flammable, insoluble in water, and has a boiling temperature between 122 and 138 °C. 35,36 During the processing stage, there are some factors that favor the FO formation during the fermentation process of ethanol production, such as: fermentation with low nitrogen content, long fermentation periods, and the long time between fermentation and distillation. 13,37 On the other hand, there are other factors that reduce its production, such as the large capacity of the fermenters, high ethanol yield and control of process variables that help in the selectivity of yeasts, resulting in greater ethanol production and lower FO formation.…”

Section: Fusel Oil (Fo)mentioning

confidence: 99%

“…However, above certain concentration, the increase of catalyst can lead to a reduction in the esters formation, due to saturation of the reaction medium. 15,36 Also, the reaction temperature is one of the essential parameters for the chemical esterification reactions for flavoring esters production, since in most cases, the reaction rate increases with increasing temperature. However, enzymes are considered thermosensitive, so the reaction temperature must be mild.…”

Section: Fusel Oil (Fo)mentioning

confidence: 99%

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Fusel Oil: Chemical Composition and an Overview of Its Potential Application

Massa¹,

Raspe²,

Feiten³

et al. 2023

J. Braz. Chem. Soc.

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Fusel oil (FO) is one of the by-products of the sugar-alcohol industry, which has application as an additional source of higher alcohols for production of esters with flavoring, fuels and lubricants properties, as well as additives in petroleum-based fuels and in pesticide formulations. Thus, this review is focused on the characteristics of FO and its applications as an acyl acceptor in transesterification and esterification reactions for esters production, its addition to fossil fuels, and the herbicidal and fungicidal potential of the compounds presented in its chemical composition. The operating conditions of the process, results obtained, and patented applications in the food, cosmetic, transportation and agricultural sectors are also reported and discussed. Furthermore, main trends, challenges and recommendations are proposed in order to overcome the disadvantages of applying FO in the reported sectors, as well as alternatives for the development of new lines of research are suggested.

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