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摘要：本课题是以安康鱼肝为原料，利用淡碱水解法从安康鱼肝中提取鱼肝油并进行精制。该课题以鱼肝油提取率，酸值，过氧化值，碘值，水分含量，不溶性杂质含量为指标，在单因子基础上对安康鱼肝油的最佳提取及精制工艺进行了正交优化设计。正交实验结果表明：不仅鱼肝油的提取率达到50%以上，而且根据标准SC/T 3502-2000检验最佳工艺所得到的精制的鱼肝油的理化指标如酸值、过氧化值等都能够达到国家标准。由正交分析得到最佳工艺为水解时间35min，盐析时间15min，盐用量占鱼肝用量的3.5%，水解温度为80℃。在精制的过程中，最佳工艺条件为磷酸浓度为78%，氢氧化钠用量为2%，活性白土用量为10%，脱臭温度为80℃，此时鱼肝油的回收率最大。24241
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毕业论文关键词：安康鱼；鱼肝油；提取；精制
The process route and parameter design of the extraction and refinement of anglerfish cod liver oil
Abstract: The research took the anglerfish liver as the material, used alkali method to extract and refine cod liver oil from anglerfish liver. With the extraction rate, acid values, peroxide values, iodine value, water content and unsolvable impurity content as the index , the research was based on single factor to do the orthogonal design to optimize the process of the extraction and refinement of anglerfish cod liver oil. The orthogonal test results showed that: the extraction rate of cod liver oil was over 50% and the measurement indexes such as acid values and peroxide values were reached the national standard according to SC/T 3502- 2000. The optimum process conditions of extraction of the anglerfish liver oil by alkali method were as follows: hydrolysis time 35 min, the salting-out time 15 min, the amount of salt 3.5%, hydrolysis temperature 80℃. In the process of refinement, the optimum conditions were as follows: phosphoric acid concentration 78%, sodium hydroxide amounts 2%, active clay amounts 10%, deodorization temperature 80℃. Under the conditions, the recovery rate of cod liver oil reached the maximum.
Keywords: anglerfish; cod liver oil; extraction; refinement.
目录
1 绪论 1
1.1本课题国内外研究现状概述 1
1.2安康鱼 1
1.3 鱼肝油 2
1.3.1概述 2
1.3.2营养成分 2
1.3.3分类 3
1.3.4提取技术 3
1.3.5精制方法 5
1.4本课题的研究目的和意义 7
2 材料与方法 8
2.1 实验材料 8
2.2 实验仪器设备 9
2.3 实验方法 9
2.3.1 鱼肝油的提取 9
2.3.2 鱼肝油的精制 10
2.3.3 鱼肝油提取率的计算 10
2.3.4 酸值测定 11
2.3.5过氧化值测定 11
2.3.6碘值测定 12
2.3.7 水分含量的测定 12
2.3.8不溶性杂质含量的测定 13
2.3.9 感官评价 13
2.3.10提取鱼肝油的理化指标分析 14
3.结果与讨论 15
3.1鱼肝的预处理 15
3.2精制工艺参数及工艺流程的确定 15
3.2.1精制过程中影响鱼肝油回收率的单因素实验 15
3.2.2 精制过程中影响鱼肝油回收率的工艺优化 18
3.3 淡碱水解法提取鱼肝油的最佳工艺条件确定 19
3.3.1淡碱水解法提取鱼肝油的单因素实验 20
3.3.2淡碱水解法提取鱼肝油的正交优化 28
3.4提取鱼肝油的感官评价 32