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KMID : 1134820200490040344
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Journal of the Korean Society of Food Science and Nutrition
2020 Volume.49 No. 4 p.344 ~ p.355
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Analysis of Aromatic Compounds of Enteromorpha prolifera Using Electronic Nose and GC/MS
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Baek Seung-Yeon
Youn Sung-Yoo
Oh Jae-Soon
Oh Sung-Wok
Kim Da-Hee
Kim Su-Jin
Kim Mee-Ree
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Abstract
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Enteromorpha prolifera (EP) from Korea is rich in phytochemicals such as vitamins, minerals, phycocyanin, and chlorophyll, however, it has a fishy odor. The purpose of this study was to analyze the aromatic compounds of EP using gas-chromatography mass spectrometry (GC/MS) and electronic nose (E-nose). Forty-seven aromatic compounds were detected with GC/MS, and methyl sulfide, with the largest peak area, accounted for 95.88%. In addition, aldehydes and alcohols produced by lipoxygenase were detected in the GC/MS analysis. To further analyze aromatic compounds of EP using E-nose, it was treated with distilled water. After the treatment, the peak areas of ??all the aromatic compounds were increased. Especially, 2-methylfuran, 2-ethylfuran, methional, pent-1-en-3-ol, and pyridine were increased and (E)-2-heptenal, (E)-2-octenal, 2-methylbutanal, and fenchol were detected only with the distilled water treatment. The results of the sensory property tests showed that all the aromatic characteristics were intense, and the score of overall acceptability was 5.0 for distilled water treated EP, which was higher than that of EP powder. Based on the above results, of aromatic compounds and characteristics, aromatic compounds of EP were classified using E-nose. In the E-nose analysis, dimethyl sulfide accounted for 75.0% of the peak areas, and was the largest peak. Therefore, the main aromatic compound of EP is considered to be methionine-derived dimethyl sulfide and methyl sulfide, and it is thought to be affected by degradation of amino acid or oxidation of fats.
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KEYWORD
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Enteromorpha prolifera, GC/MS, electronic nose, methyl sulfide, dimethyl sulfide
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