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上海食物抗坏血酸含量的研究,开始在1935年,纪育(?)等采用Birch及Harris氏等的方法测定,其大部结果均与生物学试验的结果相同。后来朱廷儒等继续纪氏等的工作,测定其他食物中所含抗坏血酸的含量,所获结果大部分与其他国家所发表的相同。1948年李氏等采用Bessey氏改良光电测定法,作更进一步研究。根据维生素化学家的意见,采用2,6二氯酚靛酚法测定抗坏血酸含量,其应用将因某些食物中其他还原性物质的存在而受限制,倘用2,4
The study on the content of ascorbic acid in foods in Shanghai began in 1935, and the methods of Birch and Harris et al. were used to determine the results. Most of the results were the same as those of biological tests. Later, Zhu Tingru et al. continued the work of Ji et al. to determine the content of ascorbic acid contained in other foods. Most of the results obtained were the same as those published by other countries. In 1948, Lee et al. used the improved Bessie’s photoelectricity method for further study. According to the advice of vitamin chemists, the use of 2,6 dichlorophenol indophenol method for the determination of ascorbic acid content, its application will be limited due to the presence of other reducing substances in certain foods, if used 2,4