郑州轻工业学院轻工职业学院
专科毕业设计(论文)
题 目 不同果蔬中VC含量的比较研究 学生姓名 专业班级
学 号
院 (系) 化 学 工 程 系 指导教师(职称) 完成时间
不同果蔬中VC含量的比较研究
不同果蔬中VC含量的比较研究
摘 要
维生素C是一种对人体极为重要的营养物质,对人体胶原蛋白的合成,提高人体抗应变能力机能,治疗贫血,坏血病,预防动脉硬化,保护细胞、解毒等都具有重要作用。目前维生素C的主要测定方法主要有荧光法、2,6-二氯靛酚滴定法、2,4-二硝基苯肼法、碘量法、光度分析法、电化学分析法及色谱法等。本文从维生素C的性质,对人体的作用,摄取途径,测定方法等方面对维生素C的研究做了全面的阐述,并选择用紫外分光光度法对新鲜果蔬中维生素C含量进行测定。本文不但对不同样品进行了横向比较研究,也对同一样品进行了热破坏的纵向比较研究。
关键词 坏血病/紫外分光光度法/维生素C
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不同果蔬中VC含量的比较研究
A comparative study of different fruits and
vegetables VC content
ABSTRACT
Vitamin C is an essential nutrient for the human body substances, synthetic human collagen, improving the resilience of the human anti-functioning, treatment of anemia, scurvy, prevent arteriosclerosis, protect cells, detoxifiCation and so has an important role. Determination of vitamin C is mainly mainly fluorescence, 2,6 - diChloro-indophenol titration, 2,4 - dinitrophenylhydrazine method iodimetry, photometric analysis, electrochemical analysis and chromatography . From the aspect of the nature of vitamin C, the body's role, uptake pathways, such as the study of determination of vitamin C do a comprehensive exposition and ultraviolet spectrophotometry choose fresh fruits and vegetables in the vitamin C content were determined. This paper not only a comparative study of different samples laterally, but also on the same sample were compared longitudinal thermal damage.
KEYWORDS scurvy / UV spectrophotometry /Vitamin C
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