Characterisation of aroma profiles of commercial sufus by odour activity value, gas chromatography-olfactometry, aroma recombination and omission studies

Natural Product Research
Zuo Bing XiaoJian Cai Zhu

Abstract

Sufu is a solid-state fermented product made from soya beans. For the sake of quality control and regulation purposes, it is essential to be able to identify key odorants of various commercial sufus. To identify the aroma-active compounds in sufus, gas chromatography-olfactometry/aroma extract dilution analysis (GC-O/AEDA) was performed, and odour activity value (OAV) was estimated. The correlations between aroma profiles and identified aroma-active compounds were also investigated by principal component analysis. Results showed that 35 aroma-active compounds were detected through OAV calculation, while 28 compounds were identified by using GC-O/AEDA. Quantitative descriptive analysis revealed that aroma recombination model based on OAV calculation was more similar to original sufu in terms of aroma comparing to aroma recombination model based on GC-O/AEDA. Omission experiments further confirmed that the aroma compounds, such as ethyl butanoate, ethyl 2-methylbutanoate, ethyl hexanoate, (E,E)-2,4-decadienal and 2,6-dimethylpyrazine, contributed most significantly to the characteristic aroma of a commercial sufu.

References

Dec 20, 1999·Journal of Agricultural and Food Chemistry·H Y Chung
May 23, 2000·Journal of Agricultural and Food Chemistry·H Y Chung
Apr 27, 2001·International Journal of Food Microbiology·B Z HanM J Nout
Mar 3, 2005·Journal of Agricultural and Food Chemistry·Hau Yin ChungJoo-Shin Kim
Mar 8, 2008·Journal of Agricultural and Food Chemistry·Noriaki KobayashiOsamu Nishimura
Apr 14, 2012·Journal of Agricultural and Food Chemistry·Xueli PangJihong Wu
Jun 19, 2013·Food Chemistry·Henryk JeleńMaciej Kuligowski

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