Ji De, Ning Zi-Wan, Zhang Xue-Rong, Ji Lin, Mao Chun-Qin, Li Lin, Lu Tu-Lin
College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China.
Key Research Laboratory of Chinese Medicine Processing in Jiangsu Province, Nanjing 210023, China.
Zhongguo Zhong Yao Za Zhi. 2016 Jul;41(14):2587-2590. doi: 10.4268/cjcmm20161404.
Different drying methods, including drying in the sun, sulphur fumigation, hot air drying, microwave drying, infrared drying and various coupling techniques,were used to dry fresh Gastrodiae Rhizoma. Characteristics, extracts and the contents of active components of all samples were compared to investigate the effects of different drying methods on quality of Gastrodiae Rhizoma. The results showed that the characteristics of the samples would be better with use of sulphur fumigation, hot air drying, and hot air-microwave drying. Different drying methods had little effects on extracts. Among them, the extract content was higher after hot air drying. The stilbene glycosides would transformation and the contents of Gastrodiae Rhizoma polysaccharides would decline with use of sulphur fumigation, microwave drying and infrared drying. In the comprehensive analysis of characteristics, content of active components, production cost and other factors, hot air drying or hot air-microwave drying was recommended as the first choice.
采用不同干燥方法，包括晒干、硫磺熏蒸、热风干燥、微波干燥、红外干燥及各种耦合技术，对新鲜天麻进行干燥处理。比较各样本的特性、提取物及活性成分含量，以研究不同干燥方法对天麻品质的影响。结果表明，硫磺熏蒸、热风干燥及热风-微波干燥处理后的样本特性更佳。不同干燥方法对提取物影响较小。其中，热风干燥后提取物含量较高。硫磺熏蒸、微波干燥及红外干燥会使天麻中的芪类糖苷发生转化，天麻多糖含量下降。综合考虑特性、活性成分含量、生产成本等因素，建议首选热风干燥或热风-微波干燥。
