Distribution characteristics of polycyclic aromatic hydrocarbons in Chinese flowering cabbage in different periods

Abstract

The purpose of this study is to investigate the distribution characteristics of polycyclic aromatic hydrocarbons (PAHs) in Chinese flowering cabbage at different growth stages, and provide reference for people's daily diet and production activities. The growth stages of Chinese flowering cabbage were divided into three periods: seedling stage (from the growth of the first true leaf to the expansion of the fifth true leaf), leaf growth stage (from the growth of the sixth true leaf to the appearance of the plant buds), and stem formation stage (from the appearance of the plant buds to the harvest of the stem). The contents of PAHs in roots, stems, and leaves of Chinese flowering cabbage at each stage were detected by high-performance liquid chromatography, and their change patterns were studied.