以双乙酸钠为主要成分的复合食品防腐剂的合成研究
关键词： 双乙酸钠；合成； 防腐剂；复配；苯甲酸钠；山梨酸钾
Study on the synthesis of the compound food preservatives sodium diacetate as the main component
Abstract: Known acetic acid - soda, acetic acid - sodium acetate and acetic acid method - Soda Method diacetate can be synthesized, in which acetic acid - ethanol solvent law, including soda, water, solvent and non-solvent. By comparing previous experience, yield, process operation, cost, decided to adopt the acetic acid - sodium carbonate in ethanol solvent method and solvent-free method for the synthesis of sodium diacetate. That the most suitable as a food additive synthesis process is based on the optimal diacetate n1: n (HAc) = 1:3.8 feeding, the reaction temperature is 80 ° C ~ 90 ° C, the reaction time is 2.5 ~ 3h in acetic acid - - soda Method in solvent-free. And mainly the antifungal effect of sodium diacetate and add potassium sorbate, sodium benzoate efficiency study to determine the n (diacetate): n (potassium sorbate) = 1:1 best mold.
Key words: Sodium diacetate; synthesis; preservatives; compound; sodium benzoate; potassium sorbate
目录
1绪论 1
1.1 本课题的研究意义 1
1.2 国内使用较多的防腐剂 2
1.2.1 酸型防腐剂 2
1.2.2 酯型防腐剂 3
1.2.3 生物型防腐剂 3
1.2.4 其他防腐剂 3
1.3 双乙酸钠的介绍 3
1.3.1 什么是双乙酸钠 3
1.3.2 双乙酸钠的用途 4
1.3.3 双乙酸钠的主要特点 4
1.3.4 双乙酸钠的抑菌作用机理及效果 5
1.3.5 双乙酸钠的复配【3】 5
1.4 双乙酸钠在食品生产中的应用【3】 5
1.4.1 粮食、谷物、米面及制品 5
1.4.2 焙烤食品 6
1.4.3 膨化食品 6
1.4.4 医疗保健作用 6
1.5 双乙酸钠与其他品种防腐剂的比较【2】 7
1.6 双乙酸钠的两种合成方法【4-13】 7
1.7 两种复配试剂的选择和性质介绍 8
1.7.1 苯甲酸钠[5] 8
1.7.2 山梨酸钾[6] 9
2实验内容 9
2.1 实验试剂 9
2.2 实验仪器 9
2.3 实验原理 10
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