CN106974996B - 一种紫玉淮山提取物及其制备方法和应用 - Google Patents
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Abstract
本发明公开了一种紫玉淮山提取物的制备方法,包括以下步骤:取紫玉淮山干粉,加入包括纤维素酶和果胶酶的混和酶,再加入蒸馏水,混合均匀,其中,紫玉淮山干粉与蒸馏水的料液比为1g:40‑60ml,紫玉淮山干粉与混和酶的质量比为1g:4‑5mg;将混合后的液体置于45‑65℃水浴中31‑39min,对水浴后的液体进行离心,获取上清液;在上清液中加入2‑3倍体积的无水乙醇,置于沸水浴中20‑30min,水浴结束后,进行离心,获取上清液,对该上清液进行加热干燥,获得紫玉淮山提取物。本发明还公开一种上述方法制备的紫玉淮山提取物及提取物的应用。本发明制备的紫玉淮山提取物可对自由基进行清除。
Description
技术领域
本发明涉及生物医药领域,特别是涉及一种紫玉淮山提取物及其制备方法和应用。
背景技术
紫玉淮山肉质紫红色、口感佳,是传统药食同源食物,在我国有悠久的食用和药用历史。紫玉淮山药用价值极高,具有益肾气、健脾胃、润皮毛之功效,同时其营养丰富,含有淀粉、多糖、蛋白质、皂甙、淀粉酶、胆碱、氨基酸、维生素、钙、铁、锌等20多种营养素。研究表明,紫玉淮山中的物质具有抗氧化的作用,能够保护人体免受自由基的损伤。
自由基又称游离基,是具有非偶电子的基团或原子,由于自由基含未配对的电子,所以极不稳定,会从邻近的分子夺取电子,让自己处于稳定的状态,这样邻近的分子又变成一个新的自由基,然后再去夺取电子,该连锁反应会使细胞结构受到破坏,造成细胞功能丧失、基因突变、甚至死亡。
如何提供一种可清除自由基的纯天然物质,是自由基清除领域亟待解决的问题之一。
发明内容
本发明的目的在于解决上述至少一个问题,提供一种紫玉淮山提取物及其制备方法和应用。
为解决上述技术问题,本发明提供一种紫玉淮山提取物的制备方法,包括以下步骤:将紫玉淮山冷冻干燥,并粉碎至45-50目,获得紫玉淮山干粉;取紫玉淮山干粉,加入包括纤维素酶和果胶酶的混和酶,再加入蒸馏水,混合均匀,其中,紫玉淮山干粉与蒸馏水的料液比为1g:40-60ml,紫玉淮山干粉与混和酶的质量比为1g:4-5mg;将混合后的液体置于45-65℃水浴中31-39min,对水浴后的液体进行离心,获取上清液;在上清液中加入2-3倍体积的无水乙醇,置于沸水浴中20-30min,水浴结束后,进行离心,获取上清液,对该上清液进行加热干燥,获得紫玉淮山提取物。
其中,混和酶按质量百分比计,包括组分:50%-70%纤维素酶、30%-50%果胶酶。
其中,紫玉淮山粉碎至45目。
其中,紫玉淮山干粉避光干燥保存。
其中,紫玉淮山干粉与蒸馏水的料液比为1g:50ml,紫玉淮山干粉与混和酶的质量比为1g:4.5mg。
其中,混合后的液体置于60℃水浴中35min。
其中,利用蒸馏水对获得的紫玉淮山提取物进行溶解,而后上大孔吸附树脂柱,用80%-90%的乙醇以1.6-1.8BV/h的流速进行解吸,解吸量为5-6BV,收集洗脱液,对洗脱液进行干燥,获得纯化的紫玉淮山提取物。
为解决上述技术问题,本发明提供一种上述制备方法制备得到的紫玉淮山提取物。
为解决上述技术问题,本发明提供一种紫玉淮山提取物作为清除自由基药物或保健品的应用。具体地,紫玉淮山提取物作为清除自由基药物或保健品的剂型为片剂、胶囊剂、颗粒剂或散剂。
本发明的有益效果是:区别于现有技术的情况,本发明的紫玉淮山提取物的制备方法包括以下步骤:将紫玉淮山冷冻干燥,并粉碎至45-50目,获得紫玉淮山干粉;取紫玉淮山干粉,加入包括纤维素酶和果胶酶的混和酶,再加入蒸馏水,混合均匀,其中,紫玉淮山干粉与蒸馏水的料液比为1g:40-60ml,紫玉淮山干粉与混和酶的质量比为1g:4-5mg;将混合后的液体置于45-65℃水浴中31-39min,对水浴后的液体进行离心,获取上清液;在上清液中加入2-3倍体积的无水乙醇,置于沸水浴中20-30min,水浴结束后,进行离心,获取上清液,对该上清液进行加热干燥,获得紫玉淮山提取物。上述方法制备的紫玉淮山提取物为纯天然物质,可对自由基进行清除。上述制备方法具有以下特点:简单、易操作;由于对紫玉淮山细胞充分破碎,可更好地对紫玉淮山中的物质进行提取;制备出的紫玉淮山提取物具有较高的提取率,且无毒、无害;利用大孔吸附树脂柱,可制备出更纯的紫玉淮山提取物。
具体实施方式
实施例1
紫玉淮山提取物的制备方法包括以下步骤:将紫玉淮山冷冻干燥,并粉碎至45目,获得紫玉淮山干粉,其中,粉碎的紫玉淮山为块茎部分;取紫玉淮山干粉,加入包括纤维素酶和果胶酶的混和酶,再加入蒸馏水,混合均匀,其中,紫玉淮山干粉与蒸馏水的料液比为1g:50ml,紫玉淮山干粉与混和酶的质量比为1g:4.5mg;将混合后的液体置于60℃水浴中35min,对水浴后的液体进行离心,获取上清液;在上清液中加入2.5倍体积的无水乙醇,置于沸水浴中25min,水浴结束后,进行离心,获取上清液,对该上清液进行加热干燥,获得紫玉淮山提取物。
在本实施例中,对于混和酶,按质量百分比计,包括组分:60%纤维素酶、40%果胶酶。
在本实施例中,获得的紫玉淮山干粉需避光干燥保存。
本实施例的紫玉淮山提取物可对自由基进行清除,由于其为纯天然物质,对人体无副作用。
实施例2
紫玉淮山提取物的制备方法包括以下步骤:将紫玉淮山冷冻干燥,并粉碎至50目,获得紫玉淮山干粉,其中,粉碎的紫玉淮山为块茎部分;取紫玉淮山干粉,加入包括纤维素酶和果胶酶的混和酶,再加入蒸馏水,混合均匀,其中,紫玉淮山干粉与蒸馏水的料液比为1g:55ml,紫玉淮山干粉与混和酶的质量比为1g:4.5mg;将混合后的液体置于65℃水浴中35min,对水浴后的液体进行离心,获取上清液;在上清液中加入3倍体积的无水乙醇,置于沸水浴中25min,水浴结束后,进行离心,获取上清液,对该上清液进行加热干燥,获得紫玉淮山提取物。
在本实施例中,对于混和酶,按质量百分比计,包括组分:65%纤维素酶、35%果胶酶。
在本实施例中,获得的紫玉淮山干粉需避光干燥保存。
本实施例的紫玉淮山提取物可对自由基进行清除,由于其为纯天然物质,对人体无副作用。
实施例3
在实施例1的基础上,利用蒸馏水对获得的紫玉淮山提取物进行溶解,而后上大孔吸附树脂柱(D101型),用88%的乙醇以1.7BV/h的流速进行解吸,解吸量为5.5BV,收集洗脱液,对洗脱液进行干燥,获得纯化的紫玉淮山提取物。
实施例4
在实施例2的基础上,利用蒸馏水对获得的紫玉淮山提取物进行溶解,而后上大孔吸附树脂柱(D101型),用88%的乙醇以1.7BV/h的流速进行解吸,解吸量为5.5BV,收集洗脱液,对洗脱液进行干燥,获得纯化的紫玉淮山提取物。
实施例5
紫玉淮山提取物片剂的制备:将实施例1或实施例2制备的紫玉淮山提取物用单冲压片机打成直径为7mm,重量为350mg的片,即得紫玉淮山提取物片剂。
实施例6
紫玉淮山提取物胶囊剂的制备:将实施例1或实施例2制备的紫玉淮山提取物以350mg填充入1号肠溶胶囊,即得紫玉淮山提取物胶囊剂。
实施例7
紫玉淮山提取物颗粒剂的制备:将实施例1或实施例2制备的紫玉淮山提取物加水制成软材,过15目筛进行造粒,干燥后即得紫玉淮山提取物颗粒剂。
实施例8
紫玉淮山提取物散剂的制备:将实施例1或实施例2制备的紫玉淮山提取物过250目筛,即得紫玉淮山提取物散剂。
下面通过实验说明本发明紫玉淮山提取物的自由基清除效果。
称取DPPH(1,1-二苯基-2-三硝基苯肼),利用乙醇进行溶解;称取实施例1制备的紫玉淮山提取物、实施例2制备的紫玉淮山提取物,利用乙醇进行溶解,分别制成11个浓度梯度的溶液,浓度梯度具体为:8μg/ml、10μg/ml、20μg/ml、30μg/ml、40μg/ml、50μg/ml、60μg/ml、70μg/ml、80μg/ml、90μg/ml、100μg/ml;在实施例1制备的紫玉淮山提取物制成的11个溶液中分别加入等体积的DPPH溶液,混合摇匀,在室温下反应1h,517nm波长下测定吸光度A,同时以乙醇为空白对照,测定吸光度A0,根据A和A0计算自由基的清除率;在实施例2制备的紫玉淮山提取物制成的11个溶液中分别加入等体积的DPPH溶液,混合摇匀,在室温下反应1h,517nm波长下测定吸光度A,同时以乙醇为空白对照,测定吸光度A0,根据A和A0计算自由基的清除率;其中,清除率的计算公式为:清除率=(A0-A)/A0×100%;其中,实验中所使用的乙醇为无水乙醇。
以紫玉淮山提取物浓度为横坐标,清除率为纵坐标绘制曲线,根据曲线的线性回归方程,计算清除自由基的半抑制浓度(IC50)。
实验结果:实施例1制备的紫玉淮山提取物对自由基的清除能力的IC50为85.63μg/ml,实施例2制备的紫玉淮山提取物对自由基的清除能力的IC50为87.35μg/ml。根据实验结果可以看出,实施例1和实施例2制备的紫玉淮山提取物表现出强的自由基清除能力。
利用上述实验方法计算紫玉淮山花青素对自由基清除能力的IC50,通过计算,IC50值为97.82μg/ml。根据计算结果,可以看出实施例1或实施例2制备的紫玉淮山提取物较紫玉淮山花青素具有更好的自由基清除能力。
利用上述实验方法计算实施例3制备的紫玉淮山提取物、实施例4制备的紫玉淮山提取物对自由基清除能力的IC50,通过计算,实施例3制备的紫玉淮山提取物对自由基的清除能力的IC50为83.27μg/ml,实施例4制备的紫玉淮山提取物对自由基的清除能力的IC50为84.01μg/ml。根据计算结果,可以看出实施例3、实施例4制备的紫玉淮山提取物较实施例1、实施例2制备的紫玉淮山提取物具有更好的自由基清除能力。
综上所述,本发明的紫玉淮山提取物可对自由基进行清除,且其为纯天然物质,对人体无副作用。
以上所述仅为本发明的实施例,并非因此限制本发明的专利范围,凡是利用本发明说明书内容所作的等效变换,或直接或间接运用在其他相关的技术领域,均同理包括在本发明的专利保护范围内。
Claims (4)
1.一种用于清除自由基的紫玉淮山提取物的制备方法,其特征在于,包括以下步骤:
将紫玉淮山冷冻干燥,并粉碎至45目,获得紫玉淮山干粉,紫玉淮山干粉避光干燥保存;
取所述紫玉淮山干粉,加入由50%-70%纤维素酶和30-50%果胶酶组成的混和酶,再加入蒸馏水,混合均匀,其中,所述紫玉淮山干粉与蒸馏水的料液比为1g:50ml,所述紫玉淮山干粉与混和酶的质量比为1g:4.5mg;
将混合后的液体置于60℃水浴中35min,对水浴后的液体进行离心,获取上清液;
在所述上清液中加入2-3倍体积的无水乙醇,置于沸水浴中20-30min,水浴结束后,进行离心,获取上清液,对该上清液进行加热干燥,获得紫玉淮山提取物,利用蒸馏水对所述紫玉淮山提取物进行溶解,而后上D101型大孔吸附树脂柱,用80%-90%的乙醇以1 .6-1.8BV/h的流速进行解吸,解吸量为5-6BV,收集洗脱液,对洗脱液进行干燥,获得纯化的紫玉淮山提取物。
2.权利要求1所述的制备方法制备得到的紫玉淮山提取物。
3.权利要求2所述的紫玉淮山提取物在制备清除自由基药物或保健品中的应用。
4.根据权利要求3所述的应用,其特征在于,所述药物或保健品的剂型为片剂、胶囊剂、颗粒剂或散剂。
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紫山药花青素的提纯及其抗氧化性测定;肖杰等;《食品工业》;20151231;第36卷(第3期);第121-125页 * |
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