So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic.Al-Dalali, Sam; Zheng, Fuping; Sun, Baoguo; Rahman, Talmizur; Chen, Feng researched the compound: 2-Ethylpyrazine( cas:13925-00-3 ).Category: chiral-catalyst.They published the article 《Tracking volatile flavor changes during two years of aging of Chinese vinegar by HS-SPME-GC-MS and GC-O》 about this compound( cas:13925-00-3 ) in Journal of Food Composition and Analysis. Keywords: tracking volatile flavor Chinese vinegar aging HSSPME GCMS GCO. We’ll tell you more about this compound (cas:13925-00-3).
Aging is an essential step for enriching the aroma profiles of Chinese vinegar. This study aimed to track the volatile flavor changes in the same batch of Chinese vinegar for the first time during two years of aging with the aid of HS-SPME-GC-MS. The aroma-active compounds were characterized at 0, 6, and 12 mo of aging using GC-O coupled with a modified frequency method. A total of 67 volatile compounds and 30 aroma-active compounds were identified during the different stages of aging. Most alcs., esters, ketones, acids, and phenols decreased during the aging from 628.4, 105.4, 132.1, 22.1, and 21.4μg/L at 0 mo to 228.7, 7.2, 9.69, 17.24, and 11.6μg/L at 24 mo sep., except aldehydes and pyrazines, which showed slight increases. Many aroma-active compounds were generated during the aging, such as methional, trimethylpyrazine, acetophenone, and 2-acetyl-3-ethylpyrazine, while pyrazines were formed during 24 mo of aging. Three aroma-active compounds with high odor activity values (OAVs) showed significant contributions to the aroma profile of vinegar, which included isovaleric acid (2743, 340, and 3139), 4-ethylguaiacol (580, 429, and 516), and γ-nonalactone (324, 640, and 442) at 0, 6, and 12 mo of aging, resp.
There are many compounds similar to this compound(13925-00-3)Category: chiral-catalyst. if you want to know more, you can check out my other articles. I hope it will help you，maybe you’ll find some useful information.