Meiling Sun;Lingfei Xu;Ying-Li Peng;Le Tong;Yuhong Zhang;Zhiqiang Zho

Key Laboratory of Forest Ecology of Ministry of Education, Northeast Forestry University, Harbin, People’s Republic of China;Research Center of Eco-environmental Science, Beijing, People’s Republic of China;Center for Ecological Research, Northeast Forestry University, Harbin, People’s Republic of China;Key Laboratory of Forest Ecology of Ministry of Education, Northeast Forestry University, Harbin, People’s Republic of Chin

Content variations;Multiscale analysis;Palmatine;Phellodendron amurense;ANTIOXIDANT;EXTRACT;CALLUS;PLANTS;BAR

Palmatine is a valuable ingredient in Chinese medicine that is produced by Phellodendron amurense Rupr. The contents of palmatine content in root bark, trunk bark, perennial branch bark, annual branches, and leaves of the trees with different ages and geographies in Northeast China were measured by high-performance liquid chromatography. The contents of palmatine in the barks of root, trunk, and perennial branch were significantly higher than those in annual branches and leaves. The contents of palmatine in trunk bark and root bark from Lesser Khingan Mountains increased with age, which is significantly opposite to other three vegetation types. The contents of palmatine in perennial branch bark, annual bark and leaves had no significant regularity. Moreover, the contents of palmatine in samples of root bark, trunk bark, perennial branch bark and annual bark varied significantly with latitude. The nature populations of P. amurense growing at low latitude contained significantly more palmatine than those growing at high latitude. These results provide a scientific basis for the reasonable cultivation and efficient utilization of P. amurense.