한빛사 논문
Abstract
Ill-Min chunga, Jae-Kwang Kimb, Jae-Gu Hanc, Won-Sik Kongc, So-Yeon Kima, Yu-Jin Yanga, Yeon-Ju Ana, Chang Kwona, Hee-Youn Chia, Mun Yhung Jungd, Seung-Hyun Kima,*
a Department of Crop Science, College of Sanghuh Life Science, Konkuk University, Seoul 05029, Republic of Korea
b Division of Life Sciences, College of Life Sciences and Bioengineering, Incheon National University, Incheon 22012, Republic of Korea
c National Institute of Horticultural and Herbal Science, Rural Development Administration, 27709 Eumseong, Republic of Korea
d Department of Food Science and Biotechnology, Graduate School, Woosuk University, Wanju-gun, 55338, Republic of Korea
*Corresponding author : Seung-Hyun Kim
Abstract
The Lentinus edodes species, known as shiitake, has a history of extensive use in many cuisines in several East Asian countries owing to its unique and pleasant flavor and texture. As international food trade increases, reliable discrimination of geographical origin is becoming increasingly crucial in Korea to identify cheaper imported Chinese shiitake. Herein, stable isotope ratios (i.e., δ13C, δ15N, δ18O, and δ34S) were measured with a stable isotope ratio mass spectrometer, and a geographical discrimination method using orthogonal projection to latent structure-discriminant analysis was developed. The externally validated discrimination method showed excellent predictability (Q2cum = 0.881) and illustrated that δ18O and δ15N were important isotope markers for the geographical discrimination of dried shiitake slices. This study extends the knowledge of geographical differences between China and Korea evidenced by the shiitake isotope signatures, thereby contributing to potential geographical authentication with broader applications for international shiitake markets.
Keywords : Shiitake; Geographical origin; Stable isotope ratio; Orthogonal projection to latent structure-discriminant analysis
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