Journal
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
Volume 93, Issue 1, Pages 85-92Publisher
WILEY
DOI: 10.1002/jsfa.5734
Keywords
aroma; Bacillus sp Chungkook-jang; SPME; DSE
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BACKGROUND: For selecting Chungkook-jang products with a less undesirable odour, the volatile compounds that affect the overall consumer acceptance of Chungkook-jang products were analysed. The volatile compounds of Chungkook-jang were extracted by using solid phasemicroextraction and direct solvent extraction and were detected by using gas chromatographyolfactometry. The results were represented as the mean of the log3 flavour dilution factors; principal component analysis was used to determine the effective components. RESULTS: Fifteen and 14 volatile compounds were detected in the extracts using solid phasemicroextraction and direct solvent extraction, respectively. The Bacillus species 2-M1L, which has the most overall acceptance, might have a nutty initial top note and nutty and cheesy long-lasting note aromas. In correlation analysis between the characteristic aromas and the overall acceptance, trimethyl pyrazine (nutty, pungent), butanoic acid (cheesy, butyric), and methyl pyrazine (burnt, roasted) were positively correlated with overall acceptance. In contrast, 3-hydroxy-2-butanone (buttery, fatty) and 2,3-butanediol (chemical, fatty) were negatively correlated with overall acceptance. CONCLUSION: Consumers might prefer Chungkook-jang that has a more nutty and cheesy flavour and a less fatty one. (C)2012 Society of Chemical Industry
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