食用油脂的脱蜡工艺研究
目录
摘要·················································· 1 关键词················································ 1 绪论·················································· 2
第1章脱蜡原理················································· 3 第2章毛油含蜡分析············································· 4 第3章油脂脱蜡工艺············································· 5 3·1常规法·················································· 5 3·1·1工艺流程··············································· 5 3·1·2结晶前加热············································· 6 3·1·3结晶的概念············································· 6 3·1·4结晶温度················································ 6 3·1·5结晶时间················································ 6 3·2 溶剂法···················································· 7 3·3 表面活性剂法·············································· 7 3·4 其他······················································ 7 3·4·1稀碱法··············································· 7
3·4·添加凝聚剂法··········································· 8 第
4
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结
果
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析·················································· 8
4·1 结果····················································· 9 4·2 分析····················································· 9 参
考
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献·························································· 9 致
谢····························································· 10
摘要：
1
脱蜡是油脂精炼工程中的重要的工艺之一，它与脱胶、脱酸、脱色、脱臭工艺密切相关，是制取高级色拉油必不可少的一道工序。目前，我国市场上的色拉油主要以经营大豆油、菜籽油等大宗油脂中不含或含蜡量极少的品种为主，而对含蜡较多的葵花籽油、米糠油、棉籽油以及玉米胚芽油等油脂则较少涉及，虽然也有述。在我国油脂脱蜡工艺中，不论是在理论上，还是在实践上都尚属于相对薄弱的环节。现结合所学知识和实践，将国内外油脂脱蜡技术以及相关新工艺内容作一阐
油脂脱蜡就是通过强制冷却将液体油中所含的高熔点的蜡与高熔点的固体脂析出，再采用过滤或离心分离方法将其除去的过程。目前国内外主要有传统的脱蜡工艺、脱酸-脱蜡工艺、低温脱酸脱蜡工艺、精细抛光过滤脱蜡工艺、S.O.F.T脱胶和脱蜡法5种工艺。
关键词：
油脂精炼工程、色拉油、含蜡量、熔点、脱蜡工艺、搅拌
绪论
2
食用级的高品质食用油，它的质量要求是很高的，无论从外观、气味、适口性、食用品质以及营养价值来讲，它的质量标准都是苛刻的，但是，如果油脂中含有少量蜡，在温度不高的情况下，它的透明度会降低，并且由于它在油中是悬浊液，会对色泽造成一定的影响，在北方地区犹为如此。还有油中含蜡，会使消化吸收率下降，并使气滋味和适口性变差，从而降低了油脂的食用品质和营养价值。另一方面，蜡是重要的工业原料，可用于制蜡纸、防水剂、光泽剂等多种行业。因此从油中脱除或提取蜡质可达到提高食用油脂品质和综合利用原料,提高经济效益的目的。另一方面，蜡是重要的工业原料，可用于制蜡纸、防水剂、光泽剂等多种行业。因此从油中脱除或提取蜡质可达到提高食用油脂品质和综合利用原料,提高经济效益的目的。 目前，我国市场上的色拉油主要以经营大豆油、菜籽油等大宗油脂中不含或含蜡量极少的品种为主，而对含蜡较多的葵花籽油、米糠油、棉籽油以及玉米胚芽油等油脂则较少涉及，虽然也有制取和经营上述色拉油油品的厂家，但现行的工艺与产品质量均尚存较多的问题。在我国油脂脱蜡工艺中，不论是在理论上，还是在实践上都尚属于相对薄弱的环节。
第1章 脱蜡原理
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