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http://dx.doi.org/10.13103/JFHS.2020.35.5.430

Electronic Sensors and Multivariate Approaches for Taste and Odor in Korean Soups and Stews  

Boo, Chang Guk (Department of Food Science, Gyeongnam National University of Science and Technology)
Hong, Seong Jun (Department of Food Science, Gyeongnam National University of Science and Technology)
Cho, Jin-Ju (Department of Food Science, Gyeongnam National University of Science and Technology)
Shin, Eui-Cheol (Department of Food Science, Gyeongnam National University of Science and Technology)
Publication Information
Journal of Food Hygiene and Safety / v.35, no.5, 2020 , pp. 430-437 More about this Journal
Abstract
This is an approach study on the sensory properties (taste and odor) of 15 types of Korean conventional soups and stews using electronic nose and tongue. The relative sensor intensity for the taste components of the samples using electronic tongue was demonstrated. By SRS (sourness) sensor, sogogi-baechuguk (beef and cabbage soup) had the highest rate of 9.0. The STS (saltiness) sensor showed the highest score of 8.2 for ojingeoguk (squid soup). For the UMS (umami) sensor, which identifies savoriness, the sogogi-baechuguk was the highest at 10.1. The SWS (sweetness) sensors showed relatively little difference, with sigeumchi-doenjangguk (spinach and bean paste soup) at the highest of 7.3. According to the BRS sensor, which tests for bitterness, the siraegi-doenjangguk (dried radish green and bean paste soup) was the highest at 7.8. By principal component analysis (PCA), we observed variances of 56.21% in principal component 1 (PC1) and 25.23% in PC2. For each flavor component, we observed -0.95 and -0.20 for factor loading of PC1 and PC2 for SRS sensors, 0.96 and 0.14 for STS sensors, and -0.94 and 0.22 for PC1 and PC2 for UMS sensors, and PC1 and 0.22 for PC1 and PC2 loading for SWS sensors. The similarity between the samples identified by clustering analysis was largely identified by 4 clusters. A total of 25 kinds of volatile compounds in 15 samples were identified, and the ones showing the highest relative content in all samples were identified as ethanol and 2-methylthiophhene. The main ingredient analysis confirmed variances of 28.54% in PC1 and 20.80% in PC2 as a result of the pattern for volatile compounds in 15 samples. In the cluster analysis, it was found to be largely classified into 3 clusters. The data in this study can be used for a sensory property database of conventional Korean soups and stews using electronic sensors.
Keywords
Electronic tongue; Electronic nose; Taste; Odor; Multivariate analysis;
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Times Cited By KSCI : 8  (Citation Analysis)
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