PJB-2018-836
IMPROVEMENT OF QUALITY AND YIELD OF NOTOPTERYGIUM FROBESII BY LOWER ALTITUDE CULTIVATION
Yehong Guo
Abstract
The present study explored the effect of lower-altitude cultivation on the constituents and yield of Notopterygium frobesii (Chinese name: Qianghuo). We established a reversed-phase high-performance liquid chromatography (RP-HPLC-DAD) method for the determination of isoimperatorin, notopterol, and ferulic acid, as listed as the main bioactive components in the Chinese Pharmacopoeia. Qianghuo cultivated at various altitudes (Lanzhou Campus, low-altitude; Tianzhu, high-altitude) and harvested on different months were assessed in terms of quality and yield. The results showed that the three bioactive components of Qianghuo cultivated in Lanzhou, particularly the stems and the leaves, meet the criteria of the Pharmacopoeia of the People's Republic of China, whereas those cultivated in Tianzhu did not and thus may be considered as supplement for livestock fodder. The levels of the three bioactive components were highest in four-year-old N. frobesii plants, and October was the best harvesting period. In addition, Qianghuo can be cultivated in lower-altitude farmlands at an elevation of 1,500 m.
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