期刊
FOOD CHEMISTRY
卷 369, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2021.130955
关键词
Shiitake; Origin labeling; Sawdust-based medium; Compound-specific isotope analysis; Discriminant model
资金
- National Institute of Horticultural and Herbal Science, Rural Development Administration, Republic of Korea [PJ01258503]
The study evaluated the use of CSIA for accurate identification of the geographical origin of shiitake, showing high accuracy in distinguishing shiitake origins, particularly with glutamate and aspartate δ15N values as key variables. Compared to bulk stable isotope analysis, the CSIA model significantly improved origin identification predictability, emphasizing the importance of isotope signatures in developing a reliable origin labeling method for shiitake cultivated on sawdust medium for the global market.
In countries like South Korea and the USA, origin labeling of shiitake grown using imported Chinese-inoculated medium is an issue. Therefore, we evaluated the use of compound-specific isotope analysis (CSIA) for the accurate identification of the geographical origin of shiitake (Korean, Chinese-inoculated medium, and Chinese); Chinese-inoculated medium shiitake were cultivated in Korea using inoculated sawdust medium from China. The CSIA-discriminant model showed an overall accuracy of 100% in the geographical classification of the original set and 96.4% for the cross-validated set. Glutamate and aspartate delta 15N values were the most important variables for differentiating shiitake based on their origins. Compared to that observed upon using the bulk stable isotope analysis, the CSIA model was associated with significantly improved predictability of origin identification. Our findings elucidate the importance of isotope signatures in developing a reliable origin labeling method for shiitake cultured on the sawdust medium for the global market.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据