LIU Yang,GUO Qingmei,SONG Yanmei.Research progress on harvesting and processing methods and quality control of Moutan Cortex[J].ZHONGGUO YAOFANG,2022,33(23):2940-2944.
LIU Yang,GUO Qingmei,SONG Yanmei.Research progress on harvesting and processing methods and quality control of Moutan Cortex[J].ZHONGGUO YAOFANG,2022,33(23):2940-2944. DOI: 10.6039/j.issn.1001-0408.2022.23.24.
Research progress on harvesting and processing methods and quality control of Moutan Cortex
Moutan Cortex, a common bulk traditional Chinese medicine, has a long medicinal history of more than 2 000 years. This study systematically summarizes the research overview of Moutan Cortex in the term of harvest time and growth years, and peeling, heart pumping, cutting while fresh, sulfur fumigation, drying and storage involved in the processing in producing area, as well as commodity specifications and grades, quality control methods. The results show that it is suitable to harvest Moutan Cortex on sunny days in autumn after 5-6 years of planting. The overall quality of Moutan Cortex retained cork is better than that of Moutan Cortex removed cork. It is recommended that the processing of Moutan Cortex may be considered to retain cork but remove xylem. It is more suitable to cut Moutan Cortex when it is fresh, in order to avoid the loss of the active ingredients due to the long storage time in the middle circulation. The fresh-cut pieces of Moutan Cortex can be dried and stored by the appropriate methods such as far-infrared drying, avoiding light and vacuum packing, which can preserve the efficacy to the greatest extent. Sulfur fumigation treatment not only affects the quality of Moutan Cortex, but also easily leads to excessive sulfur dioxide. It is not recommended to use the method of sulfur fumigation in the processing of Moutan Cortex in the production area. Moutan Cortex can be divided into three specifications: Fengdan, Liandan and Guadan, which are divided into four grades according to their length and diameter. At present, many methods (HPLC, GC-MS) have been used for quality control of Moutan Cortex, but whether they can reflect the overall quality of Moutan Cortex needs further research and discussion. Whether the Moutan Cortex is scraped should be considered in combination with other relevant factors (such as clinical efficacy, pesticide residues and heavy metal content), and the process parameters of fresh-cut Moutan Cortex still need to be further optimized.
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