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《The Global Seabuckthorn Research and Development》 2014-01
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Comparative Study on Different Extraction Solvents and Time to Some Component Content of Seabuckthorn Leaf

Zhang Jike;Lin Meizhen;Zhan Xiaomin;Wang Yunli;School of Life Science,Shanxi University;  
The crushed seabuckthorn leaves extracted 3 times and each 2 hr with water and 60% ethanol under the same conditions of solid-liquid ratio of 1:20 and extraction temperature of 60 ℃,the extraction amount and extraction rate of tea polyphenols,catechin,rutin,quercetin and vitamin c have been extracted and studied. The result shows that except the tea polyphenols,other components extraction with alcohol extraction is better thanwith water. Extraction by 3 times is better than only one time. According to dissolubility of polarity,amount of dissolution and the dissolution rate,the ranking of these five components is: Catechin tea polyphenols rutin quercetin vitamin c. Their content in the seabuckthorn leaf,the content of tea polyphenols,including catechins is the most,followed by flavonoids,including rutin and quercetin and vitamin C. Tea polyphenols content is higher than the flavonoids and vitamin C about 10 times. Rutin content is higher than that of quercetin is about 4.3-4.5 times.
【CateGory Index】: S793.6
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