The contents of capsaicinoids and dihydrocapsaicin of 30 dry pepper varieties were determined by HPLC. The results indicated that the contents of capsaicinoids and dihydrocapsaicin changed with varieties. The variation coefficient of capsaicinoids and dihydrocapsaicin was 77.44% and 82.62% respectively and very high. The frequency distribution trends of capsaicinoids and dihydrocapsaicin contents were similar,and those of total ca...