Title: Study of Antioxidation of Extract from Litchi Pericarp
Abstract: Mature litchi pericarp was extracted in turn with n hexane,ethyl acetate and φ (C 2H 5OH)=95% for 2,2 and 4 hours in Soxhlet extractor,their extraction rate being 3 66%,1 43% and 9 35% respectively.By adding 0.02% extract in lard,time of rancidity was delayed by more than 2.6 times with hexane extract or ethyl acetate extract,and by more than 1.7 times with φ (C 2H 5OH)=95% extract.If mature litchi pericarp was extracted for 6 hours with φ (C 2H 5OH)=95% in Soxhlet extractor,its extraction rate was 12 24%, w (extract)=0 04% showed higher antioxidative activity than w (BHT)=0 02% in lard,and the activity increased with increasing concentration .If premature litchi pericarp was leached for 4 days with φ (C 2H 5OH)=95% at room temperature,the extraction rate was more than 28 7%,and the extract also showed strong antioxidative activity.The antioxidant components were determined preliminarily to be phenolic acids and flavonoids by chromatographic separation and colour test.
Publication Year: 2002
Publication Date: 2002-01-01
Language: en
Type: article
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