CN110772546A - 一种从白刺果肉中提取氨基酸的方法 - Google Patents
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Abstract
本发明公开了一种从白刺果肉中提取氨基酸的方法,将白刺果肉清洗后晾干;置于粉碎机中粉碎后,加入一定量的水,超声处理一段时间;再加入一定量的乙醇,浸泡醇提一段时间后,过滤,取滤液;再经减压抽滤滤液,除去溶剂后,制得氨基酸。本发明以醇提法,并辅以利用超声波作用于粉碎后的白刺果肉,通过空化现象提取细胞中的有效成分,并提高有效成分的提出率。其操作步骤简单易行,过程无污染;通过选取最合适的温度与时间,提高醇提效率,既提高了产率,又保证了产出的总氨基的活性;减压抽滤的方式,有效防止高温蒸馏溶剂对活性成分的影响,为白刺果的综合利用和深度开发提供了新的方向,具有很强的实用性和广泛的适用性。
Description
技术领域
本发明涉及一种氨基酸的提取方法,具体涉及一种从白刺果肉中提取氨基酸的方法。
背景技术
白刺为白刺属,蒺藜科,为多分枝耐盐碱,旱生型低矮灌木。白刺常生长于荒漠区的盐碱化地区,具有耐干旱,抗高温和保水力强等生理特性。白刺是我国沙区优良的固沙灌木植物,在风沙防护上是重要的研究对象。其果实如大豆粒一般大小,呈卵圆形,成熟后呈黑红色或橙黄色,可直接食用,具有“沙漠樱桃”之称,被称为“第三类水果”。
我国的白刺果资源丰富,分布广泛,在我国西北沙漠地区及华北、东北沿海地区,张家口坝上、天津、沧州等地都有野生。据统计,柴达木盆地的白刺分布在海拔3000米以上无污染的地区,每年可产白刺果6~10万吨,具有巨大的开发价值。早在《本草纲目》中就有记载:白刺“气味辛、寒、无毒,能治痛肿溃脓、补肾气、益精髓”。但是20世纪90年代以来人们才真正开始关注白刺果的营养价值。研究发现,白刺果中粗蛋白含量为10.6%~14.4%,果肉中脂肪和果油含量占3.5%,氨基酸C的含量也达到7.8%~18.3%,更为重要的是,白刺果还含有很丰富的蛋白质、脂肪、糖等营养物质,黄酮含量高达1.1%~1.9%。
白刺果具有良好的药用与食用价值,酸甜可口,具有养胃补脾、解表安神、滋阴润肺、催乳等功效,还对身体虚弱、月经不调、消化不良有一定疗效。
发明内容
为解决现有技术的不足,本发明的目的在于提供一种高效率、低成本的从白刺果肉中提取氨基酸的方法。
为了实现上述目标,本发明采用如下的技术方案:
一种从白刺果肉中提取氨基酸的方法,包括以下步骤:
S1、将白刺果肉清洗后晾干;
S2、将洗净后的白刺果肉置于粉碎机中粉碎后,加入一定量的水,超声处理一段时间;
S3、再加入一定量的乙醇,浸泡醇提一段时间后,过滤,取滤液;
S4、减压抽滤滤液,除去溶剂后,制得氨基酸。
上述步骤S1中的清洗,包括先用流水冲洗,再用去离子水冲洗;所述晾干,包括用纱布沥水晾干。
上述步骤S2中的超声处理,功率为80-120w时间为1-2h。优选功率为90w,时间为1h。
上述步骤S3中的乙醇为白刺果肉质量的15-25倍,乙醇浓度为60wt%。优选为白刺果肉质量的20倍。
上述步骤S3中的醇提,温度为60-70℃,时间为1.5-2h。温度优选为65℃。
本发明的有益之处在于:
本发明的一种从白刺果肉中提取氨基酸的方法,利用超声波作用于粉碎后的白刺果肉,再采用醇提法从白刺果肉中提取总氨基酸;超声波作用于介质(白刺果肉)时,介质会被撕裂出许多小空穴,这些小空穴瞬间就会闭合,而闭合时会产生高达几千个大气压的瞬时压力,即空化现象。空化过程中产生的极大压力造成细胞壁被击碎,分解,使得溶剂能够渗透进入细胞内部,使得细胞中的成分溶于溶剂中,在超声波的作用下,向溶剂内溶解,以提高有效成分提出率。
本发明采用醇提法,以乙醇为提取液,提取白刺果肉中的氨基酸,操作步骤简单易行,过程无污染,醇提温度低,时间短,效率高,且成本低,既提高了产率,又保证了所得总氨基的活性;减压抽滤的方式,有效防止高温蒸馏溶剂对活性成分的影响,为白刺果的综合利用和深度开发提供了新的方向,具有很强的实用性和广泛的适用性。
具体实施方式
以下结合具体实施例对本发明作具体的介绍。
一种从白刺果肉中提取维生素的方法,包括以下步骤:白刺果肉预处理(S1)→超声破碎(S2)→醇提(S3)→减压抽滤(S4)→成品。
S1、将白刺果肉用流水冲洗浮尘,再用去离子水冲洗,之后用纱布沥水晾干,备用;
S2、将洗净后的白刺果肉放置于粉碎机中以2000-3500r/min的转速在低温条件下粉碎30-50min后,加入等体积的水,以80-120w的功率超声处理1-2h后,备用;
S3、再加入白刺果肉重量15-25倍的60wt%乙醇,在60-70℃条件下浸泡醇提1.5-2h,过滤,取滤液;备用;
S4、将醇提所得滤液减压抽滤,除去溶剂,制得氨基酸。
实施例1-6
以上显示和描述了本发明的基本原理、主要特征和优点。本行业的技术人员应该了解,上述实施例不以任何形式限制本发明,凡采用等同替换或等效变换的方式所获得的技术方案,均落在本发明的保护范围内。
Claims (5)
1.一种从白刺果肉中提取氨基酸的方法,其特征在于,包括以下步骤:
S1、将白刺果肉清洗、晾干;
S2、将洗净后的白刺果肉置于粉碎机中粉碎后,加入一定量的水,超声处理一段时间;
S3、再加入一定量的乙醇,浸泡醇提一段时间后,过滤,取滤液;
S4、减压抽滤滤液后,制得氨基酸。
2.根据权利要求1所述的一种从白刺果肉中提取氨基酸的方法,其特征在于,所述步骤S1中的清洗,包括先用流水冲洗,再用去离子水冲洗;
所述晾干,包括用纱布沥水晾干。
3.根据权利要求1所述的一种从白刺果肉中提取氨基酸的方法,其特征在于,所述步骤S2中的超声处理,功率为80-120w时间为1-2h。
4.根据权利要求1所述的一种从白刺果肉中提取氨基酸的方法,其特征在于,所述步骤S3中的乙醇为白刺果肉质量的15-25倍,乙醇浓度为60wt%。
5.根据权利要求1所述的一种从白刺果肉中提取氨基酸的方法,其特征在于,所述步骤S3中的醇提,温度为60-70℃,时间为2h。
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