52558-74-4Relevant articles and documents
Potential grape-derived contributions to volatile ester concentrations in wine
Boss, Paul K.,Pearce, Anthony D.,Zhao, Yanjia,Nicholson, Emily L.,Dennis, Eric G.,Jeffery, David W.
, p. 7845 - 7873 (2015)
Grape composition affects wine flavour and aroma not only through varietal compounds, but also by influencing the production of volatile compounds by yeast. C9 and C12 compounds that potentially influence ethyl ester synthesis during fermentation were studied using a model grape juice medium. It was shown that the addition of free fatty acids, their methyl esters or acyl-carnitine and acyl-amino acid conjugates can increase ethyl ester production in fermentations. The stimulation of ethyl ester production above that of the control was apparent when lower concentrations of the C9 compounds were added to the model musts compared to the C12 compounds. Four amino acids, which are involved in CoA biosynthesis, were also added to model grape juice medium in the absence of pantothenate to test their ability to influence ethyl and acetate ester production. β-Alanine was the only one shown to increase the production of ethyl esters, free fatty acids and acetate esters. The addition of 1 mg·L-1 β-alanine was enough to stimulate production of these compounds and addition of up to 100 mg·L-1 β-alanine had no greater effect. The endogenous concentrations of β-alanine in fifty Cabernet Sauvignon grape samples exceeded the 1 mg·L-1 required for the stimulatory effect on ethyl and acetate ester production observed in this study.
Synthesis method of N-lauroyl amino acid salt
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Paragraph 0029-0033; 0039-0044, (2021/07/14)
The invention provides a synthesis method of N-lauroyl amino acid salt, which comprises the following steps: mixing amino acid, alkali or alkali metal salt and lauramide into a reaction container according to a certain proportion, and arranging a tail gas receiving device on the reaction container; stirring and reacting for a certain time at a certain temperature; after the reaction is finished, acidifying the reaction mixture by using a hydrochloric acid solution to precipitate the product, filtering and collecting the precipitate to obtain a purified product; carrying out forced air drying on the purified product to remove moisture, so as to obtain a dried product; and dissolving the product with ethanol, adding an alkali solution at a certain temperature, stirring to react for a period of time, cooling to crystallize, and carrying out suction filtration to obtain the lauroyl amino acid salt. Other substances are not used as solvents, the problems of too high production and waste treatment cost and environmental pollution caused by the fact that a large amount of solvents (such as acetone and the like) are used at present are solved, and the method is a green and economical synthesis method and has wide market prospects and social benefits.
Manufacturing technology for fatty acyl amino acid
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Paragraph 0025; 0026; 0027, (2017/12/04)
The invention discloses a manufacturing technology for fatty acyl group amino acid. The invention is characterized in that fatty acid methyl ester and amino sodium are taken as raw materials, a one-step synthesis method is adopted for synthesizing N-fatty acyl amino acid sodium surfactant under the effect of a metallic oxide catalyst and the mole ratio of the raw materials fatty acid methyl ester to sodium amino acid is (1.2-1.8):(0.7-1). The raw material proportion is proper, the by-product is almost not generated, the product synthetic ratio is as high as 87% or above, the purity is high, the problems of a large amount of to-be-treated waste acid, complex operation technology, high raw material PC13 irritation, and the like, of the traditional acyl chloride process are overcome and the technology accords with the green chemical principle. The dosage of the catalyst is reasonable; the catalyst is utilized, so that the production efficiency is greatly increased in the preparation process, the production flow is shortened and the product quality is increased; the excellent product even can be directly used as a raw material in pharmacy industry.
