The invention relates to a miscellaneous flower lavender essential oil and its refining method. The miscellaneous flower lavender essential oil obtained by steam distillation is pre-frozen at low temperature and centrifuged at low temperature to remove some fatty acids, eucalyptol and camphor, and most of eucalyptol and camphor are removed by molecular distillation and secondary molecular distillation. After refining, the content of fatty acids in essential oil of lavender from miscellaneous flowers decreased from 4.23% before refining to 2.61%~2.88%; the content of eucalyptus oil alcohol decreased from 18.31% before refining to 0.67%~0.98%; the content of camphor decreased from 14.57% to 1.40%~1.48%, which met the requirements of national standard (GB/T12653-2008). The yield of the whole refining process ranged from 65.22% to 74.28%. The invention has simple process and high yield. The technology of freezing centrifugation combined with molecular distillation reduces the contents of fatty acids, eucalyptol and camphor in the essential oil of miscellaneous flower lavender, makes the content of camphor meet the requirements of national standards, and improves the quality and market competitiveness of miscellaneous flower lavender.
【技术实现步骤摘要】
一种杂花薰衣草精油精制方法
本专利技术属于天然产物提取分离
,具体涉及一种杂花薰衣草精油的精制方法。
技术介绍
薰衣草为唇形科薰衣草属多年生亚灌木植物,又名香水植物,黄香草,原产于地中海地区,是珍贵的天然香料植物,素有“芳香药草”之美誉。我国于20世纪初期从国外引种,现在已经在新疆、陕西、江苏等地大面积推广种植,新疆伊犁被称为“中国薰衣草之乡”。薰衣草精油由薰衣草的花穗中提取,因含有较多的烯、酮、酯类的芳香物质,芳香宜人。研究表明,薰衣草精油具有镇静催眠、抗菌消炎、驱虫、抗氧化、祛疤、促进伤口愈合、降压、抗凝血等功效,广泛应用于食品、化妆品和医药领域。不同品种的薰衣草精油成分及组分含量有很大差异,精油品质参差不齐。GB/T12653-2008规定薰衣草精油四种成分含量满足下列要求:樟脑≤1.5%,芳樟醇20%~43%,乙酸芳樟酯25%~47%,乙酸薰衣草酯0%~8%。新疆伊犁栽种的精油类薰衣草主要有蓝白花、法国蓝和杂花薰衣草。其中蓝白花薰衣草精油品质最高,各项指标均符合国家标准,但精油产量最低;法国蓝薰衣草精油樟脑、芳樟醇含量符合国标要求,但乙酸薰衣草酯含量略低,乙酸薰衣草酯含量高于标准值;杂花薰衣草栽培量最大,精油含量最高,但精油中樟脑含量高达14.57%,接近国标要求的10倍,因而品质最差,对其应进行精制纯化,以提高其精油品质和经济效益显得迫在眉睫。分子蒸馏(MolecularDistillation,MD)又叫短程蒸馏(ShortPathDistillation),是一种在高真空环境下所进行的非平衡连续蒸馏过程,也是一种无沸腾的高效新型液-液分 ...
【技术保护点】
1.一种杂花薰衣草精油其特征在于:该杂花薰衣草精油中脂肪酸含量为2.61~2.88%,桉叶油醇含量为0.67%~0.98%,樟脑含量为1.40%~1.48%,其主要通过a低温预冻、b低温冷冻离心、c一次分子蒸馏、d二次分子蒸馏4步实现该精制效果,精油得率为65.22%~74.28%。
【技术特征摘要】
1.一种杂花薰衣草精油其特征在于:该杂花薰衣草精油中脂肪酸含量为2.61~2.88%,桉叶油醇含量为0.67%~0.98%,樟脑含量为1.40%~1.48%,其主要通过a低温预冻、b低温冷冻离心、c一次分子蒸馏、d二次分子蒸馏4步实现该精制效果,精油得率为65.22%~74.28%。2.根据权利要求1所述低温预冻其特征在于:低温预冻温度为-10~-50℃,预冻时间为1~12h。3.根据权利要求1所述低温冷冻离心其特征在于:控制低温冷冻离心机的温度为-5~-20℃,转速为5000~20000rpm/min,离心时间为10~30min,收集上清备用。4.根据...
【专利技术属性】
技术研发人员:赵伯涛,陈斌,朱羽尧,黄晓德,钱骅,
申请(专利权)人:中华全国供销合作总社南京野生植物综合利用研究所,
类型:发明
国别省市:江苏,32
还没有人留言评论。发表了对其他浏览者有用的留言会获得科技券。