CN102942549B - 一种蓝莓花青素的提取方法 - Google Patents
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Abstract
本发明公开了一种稳定性好的蓝莓花青素的提取方法,先将原料粉碎成20-60目的细粉;再用60%的乙醇水提取三次,提取温度为50℃,提取时间分别为2h、2h、1h;然后将真空浓缩回收乙醇后将浓缩物加纯水沉淀去杂后将上清液经膜分离后再次真空浓缩;再超临界CO2萃取分离,且萃取温度为35℃,压力为25MPa;最后精制去杂后真空干燥,并将干膏粉碎过筛并加入辅料混合均匀后检验、包装、入库。所述蓝莓花青素的提取方法利用膜分离技术和超临界萃取分离技术等低温分离技术可提取得到优质的蓝莓提取物粉末,不易变色,且稳定性好。
Description
技术领域
本发明涉及一种花青素的提取方法,特别涉及一种稳定性好的蓝莓花青素的提取方法。
背景技术
蓝莓,又名越桔、蓝浆果、红豆果等,是杜鹃花科越桔属植物,呈灌木,分布于亚寒带、温带及亚热带。蓝莓果中含有丰富的营养成分,除含有一般水果中的有机酸、维生素和矿物质外,还含有丰富的不饱和脂肪酸及微量元素,花青素、黄酮等多种酚类生理活性成分,具有极强的药用价值和营养功能,被国家粮农组织将其列为五大健康食品之一。近几年发展迅速,市场容量大。按照产业的长远发展看,增加蓝莓初加工以及深加工产品,延长产业链条,提升其产品附加值,势在必行。
花青素又称花色素,是一类广泛存在于植物中的水溶性天然色素,属黄酮类化合物,其与糖类物质以糖苷键结合之后即为花色苷,是一种天然的抗氧化剂。由于花色素不稳定,在植物中主要以花色苷存在。
花青素作为一种天然食用色素,安全、无毒、资源丰富,而且具有一定营养和药理作用,在食品、化妆、医药等方面有着巨大的应用潜力。花青素是纯天然的抗衰老的营养补充剂,研究证明是当今人类发现最有效的抗氧化剂,是目前自然界最有效的抗氧化物质。同时有研究称可增强视力,消除眼睛疲劳;延缓脑神经衰老。
而且,蓝莓所含花青素是目前所有植物花青素中功能最优良、应用范围最广,副作用最低,也是价格最昂贵的品种。花青素含量达25%的蓝莓提取物价格是含量达95%的葡萄籽提取物的5-6倍,可见其超凡的价值。蓝莓根、茎、叶、果皮、果肉中均含有花青素,且存在于蓝莓细胞的液泡中。
现有的蓝莓花青素的提取工艺为:原料—粉碎—醇提—水沉—过滤—过柱吸附—洗脱—浓缩—干燥—粉碎—包装—成品,其稳定性不够好,较易褪色,给日常生产应用方面带来不便。
发明内容
针对现有技术存在的问题,本发明旨在提供一种不易变色,且稳定性好的蓝莓花青素的提取方法。
本发明提供一种稳定性好的蓝莓花青素的提取方法,包括如下步骤:
S1、备料:将原料粉碎成20-60目的细粉;
S2、醇提:用60%的乙醇水提取三次,提取温度为50℃,提取时间分别为2h、2h、1h;
S3、水沉:真空浓缩回收乙醇后将浓缩物加纯水沉淀去杂;
S4、膜分离:将上清液经膜分离后再次真空浓缩;
S5、超临界萃取分离:将二次浓缩的浓缩物用超临界CO2萃取分离,且萃取温度为35℃,压力为25MPa;
S6、精制:进一步精制去杂后真空干燥,并将干膏粉碎过筛;
S7:配料:加入辅料混合均匀后检验、包装、入库。
优选地,真空浓缩时其真空度为-0.07MPa~-0.088MPa。
优选地,膜分离时其温度<40℃,压力<0.1MPa。
优选地,超临界分离萃取物时分Ⅰ温度为45℃,压力为12MPa;分Ⅱ温度为35℃,压力为6MPa。
优选地,真空干燥时其真空度为-0.07MPa~-0.088MPa,温度<70℃。
优选地,配料步骤中所述辅料为食品添加剂。
本发明提供的所述稳定性好的蓝莓花青素的提取方法利用膜分离技术和超临界萃取分离技术等低温分离技术可提取得到优质的蓝莓提取物粉末,不易变色,且稳定性好。
具体实施方式
下面通过具体实施方式来进一步说明本发明的技术方案:
本发明提供一种稳定性好的蓝莓花青素的提取方法,包括如下步骤:
S1、备料:将原料粉碎成20-60目的细粉;
S2、醇提:用60%的乙醇水提取三次,提取温度为50℃,提取时间分别为2h、2h、1h;
S3、水沉:真空浓缩回收乙醇后将浓缩物加纯水沉淀去杂,真空浓缩时真空度为-0.07MPa~-0.088MPa;
S4、膜分离:将上清液经膜分离后再次真空浓缩,膜分离时其温度<40℃,压力<0.1MPa,真空浓缩时其真空度为-0.07MPa~-0.088MPa;
S5、超临界萃取分离:将二次浓缩的浓缩物用超临界CO2萃取分离,且萃取温度为35℃,压力为25MPa,其中分Ⅰ温度为45℃,压力为12MPa;分Ⅱ温度为35℃,压力为6MPa;
S6、精制:进一步精制去杂后真空干燥,并将干膏粉碎过筛,其中真空干燥时其真空度为-0.07MPa~-0.088MPa,温度<70℃;
S7:配料:加入辅料混合均匀后检验、包装、入库,所述辅料具体为食品添加剂。
本发明提供的所述稳定性好的蓝莓花青素的提取方法利用膜分离技术和超临界萃取分离技术等低温分离技术可提取得到优质的蓝莓提取物粉末,不易变色,且稳定性好。
上面对本发明进行了示例性的描述,显然本发明的实现并不受上述方式的限制,只要采用了本发明技术方案进行的各种改进,或未经改进将本发明的构思和技术方案直接应用于其它场合的,均在本发明的保护范围内。
Claims (2)
1.一种蓝莓花青素的提取方法,其特征在于,包括如下步骤:
S1、备料:将原料粉碎成20-60目的细粉;
S2、醇提:用60%的乙醇水提取三次,提取温度为50℃,提取时间分别为2h、2h、1h;
S3、水沉:真空浓缩回收乙醇后将浓缩物加纯水沉淀去杂;真空浓缩时其真空度为-0.07MPa~-0.088MPa;
S4、膜分离:将上清液经膜分离后再次真空浓缩;膜分离时温度<40℃,压力<0.1MPa;
S5、超临界萃取分离:将二次浓缩的浓缩物用超临界CO2萃取分离,且萃取温度为35℃,压力为25MPa;
超临界分离萃取物时分Ⅰ温度为45℃,压力为12MPa;分Ⅱ温度为35℃,压力为6MPa;
S6、精制:进一步精制去杂后真空干燥,并将干膏粉碎过筛;真空干燥时其真空度为-0.07MPa~-0.088MPa,温度<70℃;
S7:配料:加入辅料混合均匀后检验、包装、入库。
2.根据权利要求1所述的蓝莓花青素的提取方法,其特征在于,配料步骤中所述辅料为食品添加剂。
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| CN106214729A (zh) * | 2016-07-28 | 2016-12-14 | 南京正宽医药科技有限公司 | 一种蓝莓提取方法和治疗近视眼的保健茶 |
| CN106380458A (zh) * | 2016-08-30 | 2017-02-08 | 福建光泽圣祥源酒业有限公司 | 一种蓝莓中花青素的提取方法 |
| CN106539086A (zh) * | 2016-11-30 | 2017-03-29 | 贵阳学院 | 一种改善视力的蓝莓花青素口服液及其制备方法 |
| CN107759555A (zh) * | 2017-10-30 | 2018-03-06 | 潍坊友容实业有限公司 | 一种盐地碱蓬花青素提取方法 |
| CN107987048B (zh) * | 2017-12-15 | 2020-05-05 | 齐鲁工业大学 | 基于红外冲击干燥预处理的超临界二氧化碳提取蓝莓果实花青素技术方法 |
| CN109761946A (zh) * | 2019-03-05 | 2019-05-17 | 湖南华康生物科技股份有限公司 | 一种蔓越莓花青素的提取分离方法 |
| CN114917617B (zh) * | 2022-05-31 | 2024-06-11 | 浙江尖峰健康科技有限公司 | 一种蔓越莓分级提取方法 |
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