Food and Fermentation Industries >

2022 , Vol. 48 >Issue 4: 97 - 101

DOI: https://doi.org/10.13995/j.cnki.11-1802/ts.027983

Production law of fusel oil in solid-state fermented Zaopei under macro climate conditions

  • SHI Si ,
  • QIAO Zongwei ,
  • ZHENG Jia ,
  • LUO Qingchun ,
  • LIAO Qinjian ,
  • LIU Duotao
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  • 1(Wuliangye Yibin Co.Ltd., Yibin 644007, China)
    2(Solid-state Fermentation Key Lab of Strong-flavor Baijiu of Chinese Light Industry, Yibin 644007, China)

Received date: 2021-05-13

  Revised date: 2021-05-31

  Online published: 2022-03-16

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Abstract

Fusel oil is one of the aromatic components in Baijiu, and it is of great significance to its flavor and taste. In view to explore the production law of fusel oil and how to improve and control the production process, solid state fermentation experiment had been accomplished 30 times in two years. The isoamyl alcohol, isobutyl alcohol, n-propanol and n-butanol produced in the fermented gra2ins were analyzed by gas chromatography. The results indicated that the content of fusel oil was: n-propanol > n-butanol > isoamyl alcohol > isobutanol. The results of variance analysis demonstrated that the distribution of n-propanol (P < 0.001), n-butanol (P<0.01) and isopentanol (P < 0.05) in different Zaopei layers was significantly different, and the distribution law was lower layer > middle layer > upper layer. There were no significant differences in the distribution of isobutyl alcohol (P > 0.05) in different layers. The consequences of correlation and principal component analysis showed that the formation of n-propanol and n-butanol was positively correlated with acidity and cellar temperature, and was located on the negative axis of principal component 1; the production of isoamyl alcohol and isobutyl alcohol was positively correlated with ethanol fermentation, and was located on the positive axis of principal component 1. The results showed that the formation of the two groups of fusel oil was opposite.

Key words： solid state fermentation; fusel oil; principal component analysis

Cite this article

SHI Si , QIAO Zongwei , ZHENG Jia , LUO Qingchun , LIAO Qinjian , LIU Duotao . Production law of fusel oil in solid-state fermented Zaopei under macro climate conditions[J]. Food and Fermentation Industries, 2022 , 48(4) : 97 -101 . DOI: 10.13995/j.cnki.11-1802/ts.027983

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