1. Supervision & Testing Center for Farm Product Quality, Ministry of Agriculture, Kunming, China
2. Laboratory of Quality & Safety Risk Assessment for Agro-Product, Ministry of Agriculture, Kunming, China
3. Institute of Quality Standard and Testing Technology, Yunnan Academy of Agriculture Science, Kunming 650223, China
4. Institute of Agriculture Environment and Source, Yunnan Academy of Agriculture Science, Kunming 650223, China
5. Kunming Medical University, Kunming, China