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《Journal of Anhui Traditional Chinese Medical College》 2006-02
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Determination of Vitamin C Content in Ziziphus Jujuba by Spectrophotometry

YUAN Ye-fei,ZHEN Han-shen,OU Xian-hong(Guangxi Traditional Chinese Medical University,Guangxi Nanning 530001,China)  
Objective:To establish a method for the determination of content of vitamin C in Ziziphus jujuba.Method:Vitamin C was extracted from Ziziphus jujuba by HAc,and the osazone was formed by dealing with vitamin C.Its absorption was measured in 490 nm by spectrophotometry.Result:Vitamin C had fine linear response(r=0.999 7,)in the concentration range of 8~16 μg/ml,the recovery was 99.76%.There is 4.752 mg Vitamin C in 1 g Ziziphus jujuba,and the result obtained was similar to traditional titration of iodine.Conclusion:This method employed in this study is convenient and reliable with good repetition.
【CateGory Index】: R284
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