Potential geo-discriminative tools to trace the origins of the dried slices of shiitake (Lentinula edodes) using stable isotope ratios and OPLS-DA
| Autor: | Yeon-Ju An, Hee-Youn Chi, Jae Kwang Kim, Ill-Min Chung, Won-Sik Kong, Jae-Gu Han, So-Yeon Kim, Mun Yhung Jung, Chang Kwon, Seung-Hyun Kim, Yu-Jin Yang |
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| Rok vydání: | 2019 |
| Předmět: |
Carbon Isotopes
China Food trade biology Nitrogen Isotopes Stable isotope ratio 010401 analytical chemistry Shiitake Mushrooms Discriminant Analysis 04 agricultural and veterinary sciences General Medicine biology.organism_classification 040401 food science 01 natural sciences Mass Spectrometry 0104 chemical sciences Analytical Chemistry 0404 agricultural biotechnology Lentinula Republic of Korea Sulfur Isotopes Environmental science Food science Food Analysis Food Science |
| Zdroj: | Food chemistry. 295 |
| ISSN: | 1873-7072 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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