Two different solutions were used in the extraction of VC in five kinds of fruits (strawberry, fresh date, peach, banana, watermelon), and the content of VC was measured by iodimetric method.

• 以2%25偏磷酸、2%25草酸、10%25三氯乙酸及2%25草酸+10%25盐酸作为提取剂,分别对草莓、鲜枣、香蕉、西瓜和桃5种水果中的维生素C进行提取,并利用碘量法测定其含量。