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 90 nm by spectrophotometry.
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 90 nm by spectrophotometry.
方法:用乙酸从大枣中提取维生素C,由维生素C形成脎,于波长90 nm处测定脎的吸光度。