CN108157942B - 一种银杏糊化淀粉喷雾包埋羟基酪醇的方法 - Google Patents

一种银杏糊化淀粉喷雾包埋羟基酪醇的方法 Download PDF

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CN108157942B
CN108157942B CN201711141052.0A CN201711141052A CN108157942B CN 108157942 B CN108157942 B CN 108157942B CN 201711141052 A CN201711141052 A CN 201711141052A CN 108157942 B CN108157942 B CN 108157942B
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张彩虹
黄立新
谢普军
邓叶俊
成江
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Abstract

本发明公布了一种以银杏糊化淀粉为壁材采用喷雾干燥技术包埋羟基酪醇的方法。以银杏为原料,去掉外皮及内皮后,提取银杏淀粉,脱蛋白,脱脂肪后,在一定条件下进行糊化,制备糊化淀粉,冷冻干燥后;取定量银杏糊化淀粉复溶,制备均一的淀粉凝胶溶液,加入羟基酪醇溶液进行涡流混合,高压均质后,进行喷雾干燥,进风温度为130‑200℃,出风温度60‑120℃;将干燥银杏糊化淀粉包埋羟基酪醇粉末在棕色或避光密封袋中包装,待进行包埋率测定。本制备方法解决了羟基酪醇存储过程中品质降低严重的弊端。此方法处理过程简单,所用银杏糊化淀粉无毒副作用,包埋羟基酪醇形成密封外壳,解决了其光敏感性及易氧化性,使得生物成分流失较少,提高稳定性,延长了存储期限。

Description

一种银杏糊化淀粉喷雾包埋羟基酪醇的方法
技术领域
本发明属于生物活性存储的技术领域。
背景技术
羟基酪醇是一种天然多酚类化合物,来源于橄榄油和加工橄榄油产生的废水中。具有多种生物和药理活性,对动脉硬化、高血压、心脏病、抗癌防癌、延缓衰老都有积极的作用。羟基酪醇对光敏感,在光照条件下易氧化分解,因此避光存贮是其必备的条件。
微胶囊是指由天然或人工合成的高分子材料研制而成的具有聚合物壁壳的微型容器或包装物。对物质进行微胶囊化的目的主要有改善物质的物理性质、控制释放、隔离两性物质、屏蔽味道和气味。由于目标物形成微胶囊后与外界环境隔离,免受外界湿度、氧气、细菌、紫外线等因素的影响,在适宜条件下,又能使囊芯从薄膜中释放出来。微胶囊技术在医药、食品、农药、饲料、肥料等行业得到了广泛的应用。目前,微胶囊化方法主要包括界面聚合法、原位聚合法、锐孔法、水相/油相分离法及喷雾干燥法等。这些方法中尤其以喷雾干燥法是目前使用最广泛和最成熟,最适宜于大规模工业化生产的微胶囊方法,也是目前成本最低廉,易于实现连续化、工业化生产,且操作简便的方法。喷雾干燥法制备的微胶囊产品不仅具有均匀粒度,而且提高了包埋率。因此,选取恰当的壁材对羟基酪醇进行包埋是提高羟基酪醇存储性能的有效方法。
由于羟基酪醇含有活泼的羟基,在壁材选取过程中即不能破坏其结构又要考虑提高其稳定性。淀粉含有大量的羟基,且无毒副作用,在日常生活及食品行业为公认的安全高分子材料,以淀粉为壁材可以与羟基酪醇羟基间产生作用力,提高稳定性。但生淀粉有疏水性,因此需对淀粉进行糊化,大量的淀粉分子中的支链都伸展开,形成水凝胶,不仅可以提高羟基酪醇的稳定性,还可以形成坚硬的密闭外壳,对内部的产品起到保护作用。经查阅文献发现,对羟基酪醇的制备及生物应用研究较多,对其存储方面的研究较少,如申请号为201710307377.5的专利,采用酶促聚合的方法制备高抗氧化性及热稳定性的羟基酪醇聚合物;申请号为201610158902.7的专利,表达重组大肠杆菌酪氨酸通路相关基因能够显著提高羟基酪醇,羟基酪醇-3-O-β-D-葡萄糖苷和羟基酪醇-4-O-β-D-葡萄糖苷的产量;申请号为201710262746.3的专利,公布了在压榨油橄榄果获取橄榄油产生的大量废弃果水中提取羟基酪醇,利用离心、萃取、浓缩等传统工艺,不采用化学方法,确保羟基酪醇的食品安全性能。
本申请中将叙述一种银杏糊化淀粉喷雾包埋羟基酪醇的方法,既提高了银杏淀粉的利用率,又增强了羟基酪醇的存储稳定性,羟基酪醇粉末即可作为食品添加剂,又可作为进行深度研究的原材料。
发明内容
为解决羟基酪醇光照条件下,稳定性差,易氧化分解的现状,本发明采用喷雾技术,提供一种提高羟基酪醇存储稳定性的方法,此方法处理过程简单,喷雾干燥效率较高,粉末性能较好。
本发明的技术方案是,银杏糊化淀粉喷雾包埋羟基酪醇的方法,经过糊化淀粉的制备,磨浆,乳液配置、喷雾干燥、包装几个过程。工艺步骤为:
1)糊化淀粉的制备:将银杏去掉外皮及内皮,提取银杏淀粉,脱蛋白,脱脂肪后,在一定条件下进行糊化(糊化温度70-100℃;糊化时间30-75 min;银杏淀粉与水的比例4:1-8:1),冷冻干燥获得干燥粉末;
2)研磨:将冷冻干燥的银杏糊化淀粉进行研磨,过80-120目筛网;
3)乳液制备:将银杏糊化淀粉在水中复溶,制备为浓度5%-20%的淀粉凝胶乳液,将浓度5-20 mg/ml的羟基酪醇水溶液加入到淀粉凝胶乳液内,体积量5-20%,放入涡流搅拌中搅拌,均质机中均质(压力30 – 60MPa);
4)喷雾干燥:喷雾干燥雾化方式采用喷嘴式气流雾化,进风温度130-200℃,出风温度60 - 120℃;
5)包装:棕色或不透光的密封袋包装;
6)包埋率:取定量包埋羟基酪醇的银杏糊化淀粉颗粒与定量水混合,离心后,取上清夜进行淀粉颗粒表面羟基酪醇含量测定。包埋率=(加入的总羟基酪醇量-淀粉表面羟基酪醇量)/加入的总羟基酪醇量,羟基酪醇包埋率可达到70-95%。
有益效果
本发明所用原料为银杏淀粉及羟基酪醇,所得产品为银杏糊化淀粉包埋羟基酪醇的颗粒,提高了羟基酪醇稳定性,延长存储期限,即可作为食品、保健品被直接食用,也可以作为原材料深入研究,此加工方法的特点为:
1)以银杏糊化淀粉为原料,安全无毒副作用;
2)银杏糊化淀粉提高了羟基酪醇的稳定性,并形成密闭的外壳,起到对羟基酪醇进行保护的作用;
3)喷雾干燥方法,可以直接提高颗粒均匀度;
4)包装采用避光密封袋,防止光对干燥颗粒表面羟基酪醇的破坏。
具体实施方式
实例一
1)糊化淀粉的制备:将银杏去掉外皮及内皮,提取银杏淀粉,脱蛋白,脱脂肪后,在一定条件下进行糊化:糊化温度80℃;糊化时间40 min;银杏淀粉与水的比例7:1,冷冻干燥获得干燥粉末;
2)研磨:将冷冻干燥的银杏糊化淀粉进行研磨,过100目筛网;
3)乳液制备:将银杏糊化淀粉在水中复溶,制备为浓度10%的淀粉凝胶乳液,将浓度10 mg/ml的羟基酪醇水溶液加入到淀粉凝胶乳液内,体积量8%,放入涡流搅拌中搅拌,均质机中均质30 MPa;
4)喷雾干燥:喷雾干燥雾化方式采用喷嘴式气流雾化,进风温度170℃,出风温度100℃;
5)包装:棕色或不透光的密封袋包装;
6)包埋率:取定量包埋羟基酪醇的银杏糊化淀粉颗粒与定量水混合,离心后,取上清夜进行淀粉颗粒表面羟基酪醇含量测定。羟基酪醇包埋率可达到86.8%。
实例二
1)糊化淀粉的制备:将银杏去掉外皮及内皮,提取银杏淀粉,脱蛋白,脱脂肪后,在一定条件下进行糊化:糊化温度100℃;糊化时间60 min;银杏淀粉与水的比例7:1,冷冻干燥获得干燥粉末;
2)研磨:将冷冻干燥的银杏糊化淀粉进行研磨,过120目筛网;
3)乳液制备:将银杏糊化淀粉在水中复溶,制备为浓度8%的淀粉凝胶乳液,将浓度15 mg/ml的羟基酪醇水溶液加入到淀粉凝胶乳液内,体积量10%,放入涡流搅拌中搅拌,均质机中均质30 MPa;
4)喷雾干燥:喷雾干燥雾化方式采用喷嘴式气流雾化,进风温度180℃,出风温度110℃;
5)包装:棕色或不透光的密封袋包装;
6)包埋率:取定量包埋羟基酪醇的银杏糊化淀粉颗粒与定量水混合,离心后,取上清夜进行淀粉颗粒表面羟基酪醇含量测定。羟基酪醇包埋率可达到80%。
实例三
1)糊化淀粉的制备:将银杏去掉外皮及内皮,提取银杏淀粉,脱蛋白,脱脂肪后,在一定条件下进行糊化:糊化温度80℃;糊化时间60 min;银杏淀粉与水的比例4:1,冷冻干燥获得干燥粉末;
2)研磨:将冷冻干燥的银杏糊化淀粉进行研磨,过80目筛网;
3)乳液制备:将银杏糊化淀粉在水中复溶,制备为浓度8%的淀粉凝胶乳液,将浓度10 mg/ml的羟基酪醇水溶液加入到淀粉凝胶乳液内,体积量10%,放入涡流搅拌中搅拌,均质机中均质50 MPa;
4)喷雾干燥:喷雾干燥雾化方式采用喷嘴式气流雾化,进风温度150℃,出风温度90℃;
5)包装:棕色或不透光的密封袋包装;
6)包埋率:取定量包埋羟基酪醇的银杏糊化淀粉颗粒与定量水混合,离心后,取上清夜进行淀粉颗粒表面羟基酪醇含量测定。羟基酪醇包埋率可达到90.8%。

Claims (2)

1.银杏糊化淀粉喷雾包埋羟基酪醇的方法,其特征在于:将银杏去掉外皮及内皮后,提取银杏淀粉,脱蛋白,脱脂肪后,在一定条件下进行糊化,糊化温度70-100℃,糊化时间30-75 min,银杏淀粉与水的比例4:1-8:1,冷冻干燥获得干燥粉末,将干燥银杏糊化淀粉粉末进行研磨,过80-120目筛网;将银杏糊化淀粉在水中复溶,制备为浓度5%-20%的淀粉凝胶乳液,将浓度5-20 mg/ml的羟基酪醇水溶液加入到淀粉凝胶乳液内,体积量5-20%,放入涡流搅拌中搅拌,均质机中均质,压力30–80Mpa,采用喷嘴式气流雾化干燥,进风温度130-200℃,出风温度60 - 120℃。
2.如权利要求1所述的方法,取定量包埋羟基酪醇的银杏糊化淀粉颗粒与定量水混合,离心后,取上清液进行淀粉颗粒表面羟基酪醇含量测定,包埋率=(加入的总羟基酪醇量-淀粉表面羟基酪醇量)/加入的总羟基酪醇量,测得羟基酪醇包埋率可达到70-95%。
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