本科毕业论文_车桑子提取液在杨梅保鲜中的应用.doc

目录 1.1材料与方法 2 1.1.1材料及药品 2 1.1.2 仪器及设备 2 1.2 试验方法 2 2 结果与分析 3 2.1 不同浓度的车桑子水提取物对杨梅果实失重率的影响 3 2.2 不同浓度的车桑子的水提取物对杨梅果实腐烂率的影响 4 2.3 不同浓度的车桑子的水提物对杨梅果实呼吸强度 5 2.4 不同浓度的车桑子提取物对杨梅果实中维生素C含量的影响 5 2.5 不同浓度的车桑子水提取物对杨梅果实中可滴定酸含量的影响 6 2.6 不同浓度的车桑子水提取物对杨梅果实可溶性糖含量的影响 7 2.6.1 蒽酮比色法 7 3 结论 10 参考文献： 10 致谢 14 车桑子提取液在杨梅保鲜中的应用 摘要: 用不同体积分数（20%、40%、60%、80%）的乙醇和蒸馏水来制备车桑子的提取物，并用这些提取液来对杨梅进行保鲜试验，测定杨梅果实的失重率、腐烂率、呼吸强度、维生素C含量、可滴定酸总量可溶性糖含量等生理指标，探讨车桑子的提取物对杨梅的保鲜效果。结果显示：车桑子提取物对杨梅果实具有良好的保鲜效果，并且车桑子的水提取物（C=8%时）效果最佳，车桑子的水提取物对杨梅果实具有很好的保鲜效果，有效保持了杨梅的外观品质和内在品质，大大提高了杨梅的货架期，既保持了它的经济价值，也保证了杨梅的食用价值，既满足了卖家和消费者的愿望，又受到了广大消费者的青睐，真可谓一举多得。本试验结果表明，车桑子的水提取物在天然防腐保鲜剂的研发与利用上具有去足轻重的地位，是一支对食品保鲜有良好功效的潜力股。 关键词: 车桑子; 杨梅; 保鲜 Consist of extract in the application of arbutus preservation Abstract:With different volume fractions (20%, 40%, 60%, 40%) of ethanol and distilled water to the preparation of mulberry extract, and the extract to fresh red bayberry test, determine the weightlessness rate, waxberry fruit decay rate, respiration intensity, vitamin C, titrable acid physiological indexes such as the total soluble sugar content, explore consist of extract of strawberry preservation effect. The result shows: the car on waxberry fruit mulberry extract has good preservation effect, and consist of the water extract (C = 8%) effect is best, consist of water extract of strawberry fruit has the very good preservation effect, effectively maintain the strawberry appearance quality and intrinsic quality, greatly improve the shelf life of the arbutus, maintain its economic value, both also ensures the edible value of arbutus, satisfy the desire of the sellers and consumers, and got the favour of broad consumer, is fully staffed. The test results show that consist of water extract in natural preservative antistaling agent on the development and utilization of have to foot weight status, is a had a good effect on food preservation potential of stocks. Keywords: Dodonaea ;Yang mei ;preserv