Hefa Cheng

Dr. Hefa Cheng

College of Urban and Environmental Sciences, Peking University, Beijing 100871, China
orcid

Research Focus & Metrics

Academic Career Length

26Years (2001-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 July 2016 in Environment International
Verified
Journal Article
Closed access
Yuanan HuYuanan Hu
Yuanan Hu
Hefa ChengHefa Cheng
Hefa Cheng
STShu Tao
Shu Tao



22 November 2010 in Critical Reviews in Food Science and Nutrition
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Journal Article
Closed access
Hefa ChengHefa Cheng
Hefa Cheng
Considerable knowledge has been accumulated on the volatile compounds contributing to the aroma and flavor of yogurt. This review outlines the production of the major flavor compounds in yogurt fermentation and the analysis techniques, both instrumental and sensory, for quantifying the volatile compounds in yogurt. The volatile compounds that have been identified in plain yogurt are summarized, with the few key aroma compounds described in detail. Most flavor compounds in yogurt are produced from lipolysis of milkfat and microbiological transformations of lactose and citrate. More than 100 volatiles, including carbonyl compounds, alcohols, acids, esters, hydrocarbons, aromatic compounds, sulfur-containing compounds, and heterocyclic compounds, are found in yogurt at low to trace concentrations. Besides lactic acid, acetaldehyde, diacetyl, acetoin, acetone, and 2-butanone contribute most to the typical aroma and flavor of yogurt. Extended storage of yogurt causes off-flavor development, which is mainly attributed to the production of undesired aldehydes and fatty acids during lipid oxidation. Further work on studying the volatile flavor compounds-matrix interactions, flavor release mechanisms, and the synergistic effect of flavor compounds, and on correlating the sensory properties of yogurt with the compositions of volatile flavor compounds are needed to fully elucidate yogurt aroma and flavor.

2 April 2013 in Environmental Science and Pollution Research
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Journal Article
Closed access
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Yuanan HuYuanan Hu
Yuanan Hu
XLXueping Liu
Xueping Liu
JBJinmei Bai
Jinmei Bai
KSKaimin Shih
Kaimin Shih
EZEddy Y. Zeng
Eddy Y. Zeng
Hefa ChengHefa Cheng
Hefa Cheng

1 October 2017 in Environment International
Verified
Journal Article
Closed access
YHYuanan Hu
Yuanan Hu
Hefa ChengHefa Cheng
Hefa Cheng
STShu Tao
Shu Tao