CN106924319A - 一种具有广谱抗菌作用的朝鲜蓟叶提取物 - Google Patents

一种具有广谱抗菌作用的朝鲜蓟叶提取物 Download PDF

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CN106924319A
CN106924319A CN201710234478.4A CN201710234478A CN106924319A CN 106924319 A CN106924319 A CN 106924319A CN 201710234478 A CN201710234478 A CN 201710234478A CN 106924319 A CN106924319 A CN 106924319A
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Abstract

本发明公开了一种具有广谱抗菌作用的朝鲜蓟叶提取物,制备工艺具体包括如下步骤:A,将阴干的朝鲜蓟叶于100‑120℃蒸制4‑8小时;B,将蒸制后的朝鲜蓟叶烘干,粉碎;C,将烘干的朝鲜蓟用极性溶剂提取;D,将提取液浓缩,真空冷冻干燥即得。本发明朝鲜蓟叶提取物具有广谱抗菌作用,不仅对灰色链霉菌、枯草芽孢杆菌、大肠杆菌、金黄色葡萄球菌具有抑制作用,对酿酒酵母、热带假丝酵母也具有明显的抑制作用,可以提高朝鲜蓟叶利用率。

Description

一种具有广谱抗菌作用的朝鲜蓟叶提取物
技术领域
本发明涉及朝鲜蓟,具体涉及一种具有广谱抗菌作用的朝鲜蓟叶提取物。
背景技术
朝鲜蓟Cynara scolymus L.又名洋蓟、菜蓟、法国百合、荷花百合,为菊科菜蓟属多年生草本植物。原产于地中海沿岸,喜温暖湿润气候。朝鲜蓟主要食用部分为花苞的肥嫩苞片(状如百合鳞片)及肉质花托,可煮、炒、炸、生食或掺入面食等,风味独特,营养价值亦属上乘。其内含有朝鲜蓟素、天门冬酰胺以及黄酮类化合物等物质,是一种高营养价值的名贵保健蔬菜,被誉为“蔬菜之皇”,经常食用具有保护肝肾、增强肝脏排毒、促进消化、改善血液循环、防止动脉硬化、保护心血管的功效。我国于19世纪末从法国引进朝鲜蓟,种植于上海法租界,距今已有100年以上的栽培历史,但其种植规模一直较小。20世纪80年代,浙江、山东、云南、湖南、北京、湖北、青海和陕西等省市相继引种或规模栽培。据不完全统计,目前全国朝鲜蓟种植面积达0.32万hm2,发展较快。
朝鲜蓟叶片中含有丰富的多酚类化合物绿原酸、洋蓟酸等,它们具有保护肝脏、抗氧化、抑菌等多种生理功效。随着国际市场需求量不断增大,我国朝鲜蓟的种植面积也在进一步扩大,因而对其进行充分开发利用具有重要的意义。
霍超等对朝鲜蓟叶提取物进行抑菌实验,分别选取大肠杆菌、金黄色葡萄球菌、枯草芽孢杆菌、酿酒酵母、热带假丝酵母和灰色链霉菌进行抑菌研究(霍超等,朝鲜蓟叶提取 物的抑菌作用研究,食品科技,2009年第34卷第9期)。结果表明,朝鲜蓟叶提取物对供试菌灰色链霉菌、枯草芽孢杆菌的抑制作用最强,其次是大肠杆菌、金黄色葡萄球菌。朝鲜蓟叶提取物对上述供试菌的最低抑菌浓度分别为4.5%、5.0%、4.0%和4.0%。对于酿酒酵母、热带假丝酵母两种酵母未体现出抑菌效果。
目前,朝鲜蓟叶多作为废弃物丢弃或作为饲料使用,利用率较低。
发明内容
本发明的目的在于提供一种具有广谱抗菌作用的朝鲜蓟叶提取物,提高朝鲜蓟叶利用率。
本发明目的是通过如下技术方案实现:
一种具有广谱抗菌作用的朝鲜蓟叶提取物,制备工艺包括蒸制、提取、浓缩,所述蒸制工艺为:将阴干的朝鲜蓟叶于100-120℃蒸制4-8小时。
进一步地,制备工艺具体包括如下步骤:
A:将阴干的朝鲜蓟叶于100-120℃蒸制4-8小时;
B:将蒸制后的朝鲜蓟叶烘干,粉碎;
C:将烘干的朝鲜蓟用极性溶剂提取;
D:将提取液浓缩,真空冷冻干燥即得。
进一步地,步骤B烘干温度为50-60℃。
进一步地,步骤B粉碎至40-60目。
进一步地,步骤C所述有机溶剂为乙醇水溶液或甲醇水溶液,优选乙醇水溶液。
进一步地,所述乙醇水溶液中乙醇的体积百分含量为60-80%。
上述朝鲜蓟提取物用作抗菌剂的用途。
技术效果:
本发明朝鲜蓟叶提取物具有广谱抗菌作用,不仅对灰色链霉菌、枯草芽孢杆菌、大肠杆菌、金黄色葡萄球菌具有抑制作用,对酿酒酵母、热带假丝酵母也具有明显的抑制作用,可以提高朝鲜蓟叶利用率。
具体实施方式
下面结合实施例进一步说明本发明实质内容。
实施例1:朝鲜蓟叶提取物的制备
制备工艺具体包括如下步骤:
A:将阴干的朝鲜蓟叶于110℃蒸制6小时;
B:将蒸制后的朝鲜蓟叶55℃烘干,粉碎至50目;
C:将烘干的朝鲜蓟用体积百分含量为70%的乙醇水溶液提取,热回流提取3次,每次1.5小时,合并提取液;乙醇水溶液体积为朝鲜蓟质量的20倍;
D:将提取液浓缩,真空冷冻干燥即得。
实施例2:朝鲜蓟叶提取物的制备
制备工艺具体包括如下步骤:
A:将阴干的朝鲜蓟叶于100℃蒸制8小时;
B:将蒸制后的朝鲜蓟叶50℃烘干,粉碎至40目;
C:将烘干的朝鲜蓟用体积百分含量为60%的乙醇水溶液提取,热回流提取3次,每次1.5小时,合并提取液;乙醇水溶液体积为朝鲜蓟质量的25倍;
D:将提取液浓缩,真空冷冻干燥即得。
实施例3:朝鲜蓟叶提取物的制备
制备工艺具体包括如下步骤:
A:将阴干的朝鲜蓟叶于120℃蒸制4小时;
B:将蒸制后的朝鲜蓟叶60℃烘干,粉碎至60目;
C:将烘干的朝鲜蓟用体积百分含量为80%的乙醇水溶液提取,热回流提取3次,每次1.5小时,合并提取液;乙醇水溶液体积为朝鲜蓟质量的15倍;
D:将提取液浓缩,真空冷冻干燥即得。
实施例4:朝鲜蓟叶提取物的制备
制备工艺具体包括如下步骤:
A:将阴干的朝鲜蓟叶于105℃蒸制6小时;
B:将蒸制后的朝鲜蓟叶55℃烘干,粉碎至50目;
C:将烘干的朝鲜蓟用体积百分含量为70%的乙醇水溶液提取,热回流提取3次,每次1.5小时,合并提取液;乙醇水溶液体积为朝鲜蓟质量的20倍;
D:将提取液浓缩,真空冷冻干燥即得。
实施例5:朝鲜蓟叶提取物的制备
制备工艺具体包括如下步骤:
A:将阴干的朝鲜蓟叶于115℃蒸制6小时;
B:将蒸制后的朝鲜蓟叶55℃烘干,粉碎至50目;
C:将烘干的朝鲜蓟用体积百分含量为70%的乙醇水溶液提取,热回流提取3次,每次1.5小时,合并提取液;乙醇水溶液体积为朝鲜蓟质量的20倍;
D:将提取液浓缩,真空冷冻干燥即得。
实施例6:朝鲜蓟叶提取物的制备
制备工艺具体包括如下步骤:
A:将阴干的朝鲜蓟叶于110℃蒸制6小时;
B:将蒸制后的朝鲜蓟叶55℃烘干,粉碎至50目;
C:将烘干的朝鲜蓟用体积百分含量为65%的乙醇水溶液提取,热回流提取3次,每次1.5小时,合并提取液;乙醇水溶液体积为朝鲜蓟质量的20倍;
D:将提取液浓缩,真空冷冻干燥即得。
实施例7:朝鲜蓟叶提取物的制备
制备工艺具体包括如下步骤:
A:将阴干的朝鲜蓟叶于110℃蒸制6小时;
B:将蒸制后的朝鲜蓟叶55℃烘干,粉碎至50目;
C:将烘干的朝鲜蓟用体积百分含量为75%的乙醇水溶液提取,热回流提取3次,每次1.5小时,合并提取液;乙醇水溶液体积为朝鲜蓟质量的20倍;
D:将提取液浓缩,真空冷冻干燥即得。
实施例8:对比实施例,没有蒸制工艺
制备工艺具体包括如下步骤:
A:将阴干的朝鲜蓟叶55℃烘干,粉碎至50目;
B:将烘干的朝鲜蓟用体积百分含量为70%的乙醇水溶液提取,热回流提取3次,每次1.5小时,合并提取液;乙醇水溶液体积为朝鲜蓟质量的20倍;
C:将提取液浓缩,真空冷冻干燥即得。
实施例9:效果实施例
分别将实施例1和实施例8制备的朝鲜蓟提取物用水溶解,制成朝鲜蓟提取物质量浓度为5%的水溶液,按照文献方法测定朝鲜蓟叶提取物水溶液的抑菌作用(霍超等,朝鲜蓟叶提取物的抑菌作用研究,食品科技,2009年第34卷第9期),抑菌结果如表1所示。实施例2-7的抑菌效果与实施例1基本一致,抑菌作用明显。
表1朝鲜蓟叶提取物的抑菌作用(抑菌圈直径单位为mm)
结果表明,本发明提供的朝鲜蓟叶提取物具有更优的抑菌作用,不仅对灰色链霉菌、枯草芽孢杆菌、大肠杆菌、金黄色葡萄球菌具有抑制作用,对酿酒酵母、热带假丝酵母也具有明显的抑制作用,可以提高朝鲜蓟叶利用率。

Claims (7)

1.一种具有广谱抗菌作用的朝鲜蓟叶提取物,其特征在于,制备工艺包括蒸制、提取、浓缩,所述蒸制工艺为:将阴干的朝鲜蓟叶于100-120℃蒸制4-8小时。
2.根据权利要求1所述的朝鲜蓟叶提取物,其特征在于,制备工艺具体包括如下步骤:
A:将阴干的朝鲜蓟叶于100-120℃蒸制4-8小时;
B:将蒸制后的朝鲜蓟叶烘干,粉碎;
C:将烘干的朝鲜蓟用极性溶剂提取;
D:将提取液浓缩,真空冷冻干燥即得。
3.根据权利要求2所述的朝鲜蓟提取物,其特征在于:步骤B烘干温度为50-60℃。
4.根据权利要求2所述的朝鲜蓟提取物,其特征在于:步骤B粉碎至40-60目。
5.根据权利要求2所述的朝鲜蓟提取物,其特征在于:步骤C所述有机溶剂为乙醇水溶液或甲醇水溶液,优选乙醇水溶液。
6.根据权利要求5所述的朝鲜蓟提取物,其特征在于:所述乙醇水溶液中乙醇的体积百分含量为60-80%。
7.权利要求1-6任一所述朝鲜蓟提取物用作抗菌剂的用途。
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