目 录
摘 要……………………………………………………………………1
Abstract…………………………………………………………………….2
1、绪论……………………………………………………………………..3
1.1山梨酸介绍…………………………………………………………………………….3
1.2使用范畴……………………………………………………………………………….3
1.3用途…………………………………………………………………………………..…5
1.4检测方法……………………………………………………………………………..…6
2、实验部分……………………………………………….……………………………7
2.1试验原理…………………………………………………………………………………………………..7
2.2实验仪器与试剂……………………………………………………………………………………….7
2.3实验方法…………………………………………………………………………………………………..8
3、方法研究……………………………………………………………………………………….8
3.1吸收光谱和测量波长的选择…………………………………………………….9
3.2氧化反应温度…………………………………………………………………………………………..10
3.3显色酸度…………………………………………………………………………………………………..11
3.4显色剂用量……………………………………………………………………………………………….11
3.5工作曲线………………………………………………………………………………………………….12
4、样品测定………………………………………………………………………………………13
4.1样品溶液的制备和测定方法……………………………………………………………………..13
4.2精密度实验………………………………………………………………………………………………14
4.3样品分析………………………………………………………………………………………………….15
5、结论……………………………………………………………………………………………….16
参考文献……………………………………………………………………………………………18
致谢…………………………………………………………………………………………………..19
摘 要
食品中添加的山梨酸含量过高，如果消费者长期服用这种食品，很大程度上会危害人体健康，因此,食品中山梨酸的含量是是至关重要的。本文采用分光光度[1-2]法测定食品中山梨酸的含量。以双氧水-硫酸溶液为山梨酸氧化体系，得到氧化产物丙二醛与硫代巴比妥酸进一步进行显色反应。
关键词：分光光度法，山梨酸，危害，过氧化氢-硫酸;
Abstract
The excessive acid content in food is too high, if consumers take this food for a long time, it will be harmful to human health, therefore, the content of acid in food is very important. In this paper, the content of acid in food was determined by Spectrophotometry with [1-2] method. The oxidation system of the hydrogen peroxide sulfuric acid solution was used as the oxidation product of the oxidation products, and the content of MDA was further reacted with the reaction of the acid.
Key words: sorbitol, hazard, spectrophotometric method
Key word: Spectrophotometry, hydrogen peroxide, hydrogen peroxide sulfuric acid, hydrogen peroxide
