利用薄层扫描法和高效液相色谱法测定了江苏引种黄连根茎以外的副产物 (须根、连渣、叶片、叶柄 )中生物碱的含量 ,其中 4年生黄连叶片生物碱含量达 2 .4 3% ,叶柄达 3.57% ,6年生黄连须根生物碱含量达 5.67% ,连渣达 6.32 % ;建议充分利用须根、连渣、叶片、叶柄等副产物 The contents of alkaloids in the by-products (fibrous roots, even residues, leaves and petioles) other than the rhizomes of the Chinese rhizome were introduced by TLC and HPLC. The content of alkaloids in the 4-year-old Coptis leaves was 2.3 3 %, Petioles up to 3.57%, 6-year-old Coptis alkaloid content of 5.67%, with 6.32% of slag; it is recommended to make full use of fibrous roots, even residues, leaves, petioles and other by-products