Preparation of a new type of block Qu and its influence on ferulic acid and flavor of Huangjiu

  • BAI Xiaolin ,
  • QIN Hui ,
  • REN Dongliang ,
  • LIU Shuangping ,
  • LIU Haipo ,
  • MAO Jian
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  • 1(National Engineering Research Center for Cereal Fermentation and Food Biomanufacturing, School of Food Science and Technology, Jiangnan University, Wuxi 214122, China)
    2(National Engineering Research Center of Solid-state Brewing, Luzhou 646000, China)
    3(Zhejiang Guyuelongshan Shaoxing Wine Co.Ltd., Shaoxing 312000, China)

Received date: 2025-01-03

  Revised date: 2025-04-03

  Online published: 2025-12-15

Abstract

Wheat Qu, as a saccharification starter culture, plays an important role in the quality of Huangjiu.The main objective of this study was to optimize the preparation process of block Qu by inoculating Penicillium oxalate M1816 to improve its glucoamylase and amylase activities.On the basis of this process, the effects of fortified block Qu prepared by inoculating Penicillium oxalate M1816 and Pseudomonas sp.A-4H screened from wheat Qu on ferulic acid and flavor of Huangjiu were further studied.Results demonstrated that under the optimal parameters of 9.5% (mass fraction) bran addition, 6% inoculation amount and 35.5% (mass fraction) total moisture content, the glucoamylase and amylase activities of the block Qu exhibited a 43% and 56% increase, respectively.Subsequently, the ferulate esterase activity of the fortified block Qu (Group) inoculated with Pseudomonas sp.A-4H and P.oxalicum M1816 was 36% higher than that of the block Qu (Control) inoculated with P.oxalicum M1816, but there was no significant difference in amylase activity between the two groups (P>0.05).The brewing experiment showed that the ferulic acid content of Huangjiu (Group) was (23.17±0.80) mg/L, which was 1.64 times that of Huangjiu (Control).In addition, the volatile flavor compounds in Huangjiu were analyzed based on Orthogonal Partial Least Squares Discriminant Analysis, and more pleasant esters and phenolic substances such as ethyl acetate, diethyl succinate, vanillin and 4-vinyl guaiacol were produced in Group.The research results provide scientific guidance for the mechanized production of a new type of wheat Qu.

Cite this article

BAI Xiaolin , QIN Hui , REN Dongliang , LIU Shuangping , LIU Haipo , MAO Jian . Preparation of a new type of block Qu and its influence on ferulic acid and flavor of Huangjiu[J]. Food and Fermentation Industries, 2025 , 51(22) : 135 -144 . DOI: 10.13995/j.cnki.11-1802/ts.042032

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