Department of Crop Science, College of Sanghuh Life Science, Konkuk University, Seoul 05029, Republic of Korea.
National Institute of Horticultural and Herbal Science, Rural Development Administration, 27709 Eumseong, Republic of Korea.
Food Chem. 2018 Oct 30;264:92-100. doi: 10.1016/j.foodchem.2018.04.138. Epub 2018 May 2.
This study was aimed to verify the regional traceability of Agaricus bisporus mushroom using unique δC, δN, δO, and δS features combined with chemometric approaches. Ten cultivars from 15 mushroom farms in six regions of Korea were measured their isotopic signatures by stable isotope ratio mass spectrometer. The δC, δN, δO, and δS values were significantly different among mushrooms collected from six cultivation regions (P < 0.05). Multi-dimensional plots including the δN and δS values demonstrated clear regional discrimination of the Saedo and Saehan cultivars produced from Buyeo, Nonsan, Eumseong, Boryeong, or Gyeongju. Partial least-squares discriminate analysis models showed good discrimination for Saedo (R = 0.798 and Q = 0.563) and Saehan (R = 0.819 and Q = 0.894). These preliminary results can extend knowledge of regional isotope signatures in A. bisporus mushroom produced in Korea, contributing to accurate geographical authenticity with potential broader applications for the international mushroom market.
本研究旨在利用独特的 δC、δN、δO 和 δS 特征结合化学计量学方法来验证双孢蘑菇的区域可追溯性。从韩国六个地区的 15 个蘑菇场采集了 10 个品种的蘑菇，并通过稳定同位素比质谱仪测量了它们的同位素特征。来自六个种植区的蘑菇的 δC、δN、δO 和 δS 值存在显著差异（P < 0.05）。包括 δN 和 δS 值在内的多维图清楚地区分了来自 Buyeo、Nonsan、Eumseong、Boryeong 或 Gyeongju 的 Saedo 和 Saehan 品种。偏最小二乘判别分析模型对 Saedo（R = 0.798，Q = 0.563）和 Saehan（R = 0.819，Q = 0.894）的判别效果良好。这些初步结果可以扩展韩国双孢蘑菇的区域同位素特征知识，为国际蘑菇市场提供更广泛的潜在应用，确保其地理来源的真实性。
