Study on volatile aroma compounds in donkey broths of different stewing time was written by Wang, Shuqi;Liu, Haoyue;Xie, Tian;Zhang, Ning;Sun, Jie;Chen, Haitao;Sun, Baoguo. And the article was included in Flavour and Fragrance Journal in 2022.Category: esters-buliding-blocks This article mentions the following:
Donkey broth has a unique aroma and is affected by cooking time. Five donkey broth samples of different stewing time were prepared The volatile components were extracted by solvent-assisted flavor evaporation (SAFE) and analyzed by gas chromatog.-mass spectroscopy (GC-MS). According to the result, a total of 45 volatile aroma compounds were identified in five donkey broths (stewing time of 0 min, 1, 2, 3 and 4 h resp.). In terms of gas chromatog.-olfactometry (GC-O) anal., aroma extraction dilution anal. (AEDA) and calculating odor activity values (OAVs), resp. 26 and 15 aroma active compounds were pointed out significantly in five donkey broths. Twelve odorants including 2-Me pentanal, 3-hydroxyl-2-butanone, hexanal, di-Me trisulfide, nonanal, 3-(Methylthio)propanal, 2-ethyl-1-hexanol, benzaldehyde, 4-methoxyallylbenzene, (E,E)-2,4-nonadienal, delta-hexalactone and octanoic acid were characterized as the common aroma active compounds existed in donkey broths with different stewing time. Principal component anal. (PCA) and sensory evaluation results characterized the difference of aroma profiles for the five different donkey broths, which showed that the duration of the stewing time had an important effect on the general flavor of donkey broth. In the experiment, the researchers used many compounds, for example, 5-Hexyldihydrofuran-2(3H)-one (cas: 706-14-9Category: esters-buliding-blocks).
5-Hexyldihydrofuran-2(3H)-one (cas: 706-14-9) belongs to esters. Esters are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits, including apples, durians, pears, bananas, pineapples, and strawberries. Acyl chlorides and acid anhydrides alcoholysis is another way to produce esters. Acyl chlorides and acid anhydrides react with alcohols to produce esters. Anydrous conditions are recommended since both acyl chlorides and acid anhydrides react with water.Category: esters-buliding-blocks
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics