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Flavor profile variations of huangjiu brewed in different traditional Chinese solar terms

Food Quality and Safety 2022年第4期6卷 720-729页

作者：卢丽娜张娇娇吴峰华谢广发单之初刘兴泉 College of Forestry and Biotechnology Zhejiang Agriculture and Forestry UniversityHangzhouChina College of Food and Health Zhejiang Agriculture and Forestry UniversityHangzhouChina College of Biology and Environmental Engineering Zhejiang Shuren UniversityShaoxingChina Zhejiang Pagoda Brand Shaoxing Rice Wine Co. Ltd.ShaoxingChina

Background:Through long-term research on huangjiu fermentation,it has been found that the quality of huangjiu is closely associated with Chinese 24-solar ***,this study was conducted to explore the characteristic and property index differences of huangjiu,such as aroma and flavor profile,and physicochemical properties—brewed in different solar terms by choosing five representative fermentation times of Shaoxing ***:huangjiu samples in the current study all met the national standards of traditional semi-dry *** are significant differences in physicochemical properties such as acidity and amino nitrogen among different solar-term *** three detected volatiles were applied by principal component analysis and partial least squares discriminant analysis analyses to differentiate the main *** mainly loaded to four principal components,which accounted for 86.5%.Nineteen volatiles were discriminated to significantly differentiate solar-term *** activity values(OAV)analysis found 14 compounds with OAV>1,while correlation analysis between volatiles and the outcomes of sensory evaluation displayed the various properties of huangjiu on aroma and flavor due to the various combinations of volatiles,reducing sugar,acidity and amino *** a national wine inspector evaluated and scored huangjiu fermented in different solar terms,huangjiu brewed in Winter Solstice exhibited the highest performance,with a score of 91.0,and praised as a kind of gold medal ***:The methodology of this study can help to produce more types of appealing flavor and aroma of alcoholic beverages to consumers,build varietal huangjiu or other alcoholic beverages through fermenting guidance by solar term,and even expand the applications of the traditional Chinese 24-solar term.

关键词： huangjiu Chinese traditional 24-solar term volatile gas chromatography-mass spectrometry flavor profile

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Development of a monitoring system for huangjiu storage based on electrical conductivity

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Food Quality and Safety 2023年第3期7卷 483-491页

作者： Jian Hu Shuangping Liu Mujia Nan Caixia Liu Xiao Han Jian Mao National Engineering Research Center for Cereal Fermentation and Food Biomanufacturing School of Food Science and TechnologyJiangnan UniversityWuxiChina Shanghai Jinfeng Wine Co. Ltd.ShanghaiChina Basic Department University of Tibetan MedicineLhasaChina Jiangnan University(Shaoxing)Industrial Technology Research Institute ShaoxingChina

In order to quickly detect the rancidification of huangjiu in pottery jars,this study developed a fast detection method based on the principle of electrical conductivity changes caused by microbial *** change in total acid in huangjiu was positively correlated with the increase of electrical *** method was applied to an online monitoring system for huangjiu storage in stainless steel *** the electrical conductivity exceeds the normal fluctuation range(mean+3 standard deviations)of previous data,the monitoring system recognizes microbial *** optimizing the conductivity-temperature compensation coefficient and conductivity statistical method,the standard deviation of the method was reduced and the sensitivity of microbial pollution monitoring was *** ranges of conductivity and compensation coefficient of common types of huangjiu were *** in conductivity measurements due to environmental factors was minimised through the synchronous comparison of conductivity data for multiple tanks of *** standard deviation,which indicates the fluctuation range of the system,decreased from 143 to 2μS/*** monitoring system was then applied in huangjiu storage tanks with capacities of 60 t and 300 *** the comparison of conductivity data change,the abnormal signals caused by microbial contamination during the storage of huangjiu were found over ***,through offline detection of total acid in huangjiu,the effectiveness of microbial contamination online detection was verified.

关键词： huangjiu online monitoring electrical conductivity rancidification microbial contamination

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