Abstract:In order to make full use of resource of Toona sinensis and provide theoretical basis for the development and processing, the quality and vitro antioxidation activity of different parts (upper, middle, bottom) of Toona Sinensis immature leaves and stems were studied. The qualities include total polyphenol, Vc, soluble saccharide, chlorophyll, flavonoid, soluble protein and nitrite. Quality analysis showed that contents in leaves were significantly higher than that of in stems (p <0.01) except for soluble proteins and nitrites. Total polyphenols and Vc were mainly concentrated in the upper leaves, soluble saccharide content was the highest in the middle leaves, chlorophyll and flavonoids existed in the bottom leaves. Analysis of composition contents was no difference in stem. Antioxidant activity showed that scavenging hydroxyl free radical and total reduction power of leaves were far higher than that of in stems. Activities of scavenging hydroxyl free radical and total reduction power were strongest in upper leaves. There was little difference in scavenging DPPH·, ranging from 2.29 to 3.37.
