CN113662171A - 一种壳聚糖基微凝胶乳化剂 - Google Patents
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Abstract
本发明公开了一种壳聚糖基微凝胶乳化剂,包括以下组分:壳聚糖衍生物、卡拉胶、硬脂酰乳酸钠、甘油脂肪酸酯、水不溶性***木聚糖、羧甲基纤维素钠。本发明还公开了其制备方法。本发明提供的壳聚糖基微凝胶乳化剂,所用羧甲基纤维素钠和卡拉胶能通过静电吸附及位阻作用力包裹蛋白质颗粒,水不溶性***木聚糖能在产品体系中形成立体空间网络结构,阻止蛋白颗粒沉淀现象,应用于乳制品制备过程中能够减少其他化学增稠剂和乳化剂的添加。
Description
技术领域
本发明涉及食品添加剂技术领域,具体涉及一种壳聚糖基微凝胶乳化剂。
背景技术
在20世纪初,Pickering发现具有胶体尺寸的固体颗粒可以吸附在两相界面稳定乳液,将这类乳液称为Pickering乳液,这种起到乳化作用的粒子称为颗粒乳化剂。颗粒乳化剂的种类包括无机纳米固体粒子,有机/无机杂化纳米粒子,聚合物微球,微凝胶以及大分子自组装纳米粒子等。颗粒乳化剂在食品、医药、化妆品等传统领域以及催化、制备新型材料等新兴领域都得到了广泛的应用,与传统的小分子乳化剂相比所制备的乳液更加稳定,且无小分子迁移的毒害性。因此,研发制备简单、效果好的颗粒乳化剂具有非常重要的意义。
发明内容
针对现有食品添加剂的不足,本发明提供了一种具有良好乳化、制备简单的壳聚糖基微凝胶乳化剂。
本发明的目的通过如下技术方案实现:
本发明的第一个目的是提供一种壳聚糖基微凝胶乳化剂,具体如下:
一种壳聚糖基微凝胶乳化剂,包括以下组分:壳聚糖衍生物、卡拉胶、硬脂酰乳酸钠、甘油脂肪酸酯、水不溶性***木聚糖、羧甲基纤维素钠。
作为优选,所述壳聚糖衍生物为羟丁基壳聚糖;其制备方法如下:取壳聚糖粉末分散于NaOH水溶液中进行碱化处理,N2保护,微波作用18~24h,滤除多余碱液,挤干,得到固形物;然后将固形物加入到异丙醇水溶液中,随后加入一定体积的1,2-环氧丁烷,微波反应;反应结束后调节pH至中性,滤去不溶物,加入乙醇,离心,真空干燥,得到羟丁基壳聚糖。
作为优选,所述水不溶性***木聚糖的制备方法为:将植物秸秆粉碎过筛,加入碱性电解水,40℃水浴提取2~4h,然后加酸调节pH为中性,静置1~3h,取上清液浓缩后离心,加入乙醇,冰箱4℃冷藏过夜,离心取沉淀,沉淀再次溶解,离心除去不溶物,蒸去乙醇,冷冻干燥即得水不溶性***木聚糖。
作为优选,所述水不溶性***木聚糖的制备方法中所加酸为冰醋酸;所加乙醇的体积分数为95%。
作为优选,所述各组分的重量份数配比为:壳聚糖衍生物10~20份、卡拉胶7~14份、硬脂酰乳酸钠0.1~0.4份、甘油脂肪酸酯0.2~0.5份、水不溶性***木聚糖0.6~2.8份、羧甲基纤维素钠0.3~0.7份。
作为优选,所述各组分的重量份数配比为:壳聚糖衍生物14~18份、卡拉胶9~12份、硬脂酰乳酸钠0.2~0.3份、甘油脂肪酸酯0.3~0.4份、水不溶性***木聚糖1.5~2.0份、羧甲基纤维素钠0.4~0.6份。
作为优选,所述各组分的重量份数配比为:壳聚糖衍生物16份、卡拉胶10份、硬脂酰乳酸钠0.25份、甘油脂肪酸酯0.35份、水不溶性***木聚糖1.8份、羧甲基纤维素钠0.5份。
本发明的第二个目的是提供一种壳聚糖基微凝胶乳化剂的制备方法,具体如下:
一种所述的壳聚糖基微凝胶乳化剂的制备方法,包括以下步骤:
(1)称取相应重量份数的壳聚糖衍生物、卡拉胶、硬脂酰乳酸钠、甘油脂肪酸酯、水不溶性***木聚糖、羧甲基纤维素钠;
(2)将壳聚糖衍生物配制成2.5%wt的壳聚糖基水溶液,70℃水浴加热静置去泡;按照相同方法配制5%wt的卡拉胶水溶液;
(3)将壳聚糖基水溶液和卡拉胶水溶液混合,并加入硬脂酰乳酸钠、甘油脂肪酸酯、水不溶性***木聚糖、羧甲基纤维素钠,45℃水浴加热,15000~30000rpm/min高速剪切1~4min,即得产品。
本发明的第三个目的是提供上述壳聚糖基微凝胶乳化剂的应用:
上述的壳聚糖基微凝胶乳化剂可应用于乳制品的制备,如酸奶、奶油、干酪、乳冰淇淋、奶片等。
本发明与现有技术相比具有以下有益效果:
1、本发明提供的壳聚糖基微凝胶乳化剂,所用羧甲基纤维素钠和卡拉胶能通过静电吸附及位阻作用力包裹蛋白质颗粒,包裹后的蛋白质颗粒通过静电排斥作用力起到一定的防止蛋白沉淀的作用,水不溶性***木聚糖能在产品体系中形成立体空间网络结构,把包裹好的蛋白质锁定在一个个小型网络空间里,阻止蛋白颗粒沉淀现象。
2、本发明提供的壳聚糖基微凝胶乳化剂,所用水不溶性***木聚糖为玉米秸秆碱溶液提取物,保留了水不溶性***木聚糖的天然大分子的特性,具有较高的阿魏酸含量,具有良好的持水性、粘性、泡沫稳定性和抗氧化性,应用于乳制品制备过程中能够减少其他化学增稠剂和乳化剂的添加。
具体实施方式
为更进一步阐述本发明所采取的技术手段及其效果,以下根据本发明的优选实施例进行详细描述。
实施例1
一种壳聚糖基微凝胶乳化剂,所述各组分的重量份数配比为:壳聚糖衍生物10份、卡拉胶7份、硬脂酰乳酸钠0.1份、甘油脂肪酸酯0.2份、水不溶性***木聚糖0.6份、羧甲基纤维素钠0.3份。
其中,所述壳聚糖衍生物为羟丁基壳聚糖,其制备方法如下:取壳聚糖粉末分散于NaOH水溶液中进行碱化处理,N2保护,微波作用24h,滤除多余碱液,挤干,得到固形物;然后将固形物加入到异丙醇水溶液中,随后加入一定体积的1,2-环氧丁烷,微波反应;反应结束后调节pH至中性,滤去不溶物,加入乙醇,离心,真空干燥,得到羟丁基壳聚糖。
其中,将500g玉米秸秆粉碎过筛,按照料液比1:5加入饱和氢氧化钡溶液,40℃水浴提取2h,然后加冰醋酸调节pH为中性,静置1h,取上清液浓缩后离心,加入95%乙醇并调节乙醇浓度为70%,置于冰箱内4℃冷藏过夜,离心取沉淀,沉淀再次溶解,离心除去不溶物,蒸发除去乙醇,冷冻干燥即得水不溶性***木聚糖。
壳聚糖基微凝胶乳化剂的制备方法,包括以下步骤:
(1)称取相应重量份数的壳聚糖衍生物、卡拉胶、硬脂酰乳酸钠、甘油脂肪酸酯、水不溶性***木聚糖、羧甲基纤维素钠;
(2)将壳聚糖衍生物配制成2.5%wt的壳聚糖基水溶液,70℃水浴加热静置去泡;按照相同方法配制5%wt的卡拉胶水溶液;
(3)将壳聚糖基水溶液和卡拉胶水溶液混合,并加入硬脂酰乳酸钠、甘油脂肪酸酯、水不溶性***木聚糖、羧甲基纤维素钠,45℃水浴加热,20000rpm/min高速剪切3min,即得产品。
实施例2
一种壳聚糖基微凝胶乳化剂,所述各组分的重量份数配比为:壳聚糖衍生物16份、卡拉胶10份、硬脂酰乳酸钠0.25份、甘油脂肪酸酯0.35份、水不溶性***木聚糖1.8份、羧甲基纤维素钠0.5份。
其中,所述壳聚糖衍生物为羟丁基壳聚糖,其制备方法如下:取壳聚糖粉末分散于NaOH水溶液中进行碱化处理,N2保护,微波作用24h,滤除多余碱液,挤干,得到固形物;然后将固形物加入到异丙醇水溶液中,随后加入一定体积的1,2-环氧丁烷,微波反应;反应结束后调节pH至中性,滤去不溶物,加入乙醇,离心,真空干燥,得到羟丁基壳聚糖。
其中,将500g玉米秸秆粉碎过筛,按照料液比1:5加入饱和氢氧化钡溶液,40℃水浴提取2h,然后加冰醋酸调节pH为中性,静置1h,取上清液浓缩后离心,加入95%乙醇并调节乙醇浓度为70%,置于冰箱内4℃冷藏过夜,离心取沉淀,沉淀再次溶解,离心除去不溶物,蒸发除去乙醇,冷冻干燥即得水不溶性***木聚糖。
壳聚糖基微凝胶乳化剂的制备方法,包括以下步骤:
(1)称取相应重量份数的壳聚糖衍生物、卡拉胶、硬脂酰乳酸钠、甘油脂肪酸酯、水不溶性***木聚糖、羧甲基纤维素钠;
(2)将壳聚糖衍生物配制成2.5%wt的壳聚糖基水溶液,70℃水浴加热静置去泡;按照相同方法配制5%wt的卡拉胶水溶液;
(3)将壳聚糖基水溶液和卡拉胶水溶液混合,并加入硬脂酰乳酸钠、甘油脂肪酸酯、水不溶性***木聚糖、羧甲基纤维素钠,45℃水浴加热,20000rpm/min高速剪切3min,即得产品。
实施例3
一种壳聚糖基微凝胶乳化剂,所述各组分的重量份数配比为:壳聚糖衍生物20份、卡拉胶14份、硬脂酰乳酸钠0.4份、甘油脂肪酸酯0.5份、水不溶性***木聚糖2.8份、羧甲基纤维素钠0.7份。
其中,所述壳聚糖衍生物为羟丁基壳聚糖,其制备方法如下:取壳聚糖粉末分散于NaOH水溶液中进行碱化处理,N2保护,微波作用24h,滤除多余碱液,挤干,得到固形物;然后将固形物加入到异丙醇水溶液中,随后加入一定体积的1,2-环氧丁烷,微波反应;反应结束后调节pH至中性,滤去不溶物,加入乙醇,离心,真空干燥,得到羟丁基壳聚糖。
其中,将500g玉米秸秆粉碎过筛,按照料液比1:5加入饱和氢氧化钡溶液,40℃水浴提取2h,然后加冰醋酸调节pH为中性,静置1h,取上清液浓缩后离心,加入95%乙醇并调节乙醇浓度为70%,置于冰箱内4℃冷藏过夜,离心取沉淀,沉淀再次溶解,离心除去不溶物,蒸发除去乙醇,冷冻干燥即得水不溶性***木聚糖。
壳聚糖基微凝胶乳化剂的制备方法,包括以下步骤:
(1)称取相应重量份数的壳聚糖衍生物、卡拉胶、硬脂酰乳酸钠、甘油脂肪酸酯、水不溶性***木聚糖、羧甲基纤维素钠;
(2)将壳聚糖衍生物配制成2.5%wt的壳聚糖基水溶液,70℃水浴加热静置去泡;按照相同方法配制5%wt的卡拉胶水溶液;
(3)将壳聚糖基水溶液和卡拉胶水溶液混合,并加入硬脂酰乳酸钠、甘油脂肪酸酯、水不溶性***木聚糖、羧甲基纤维素钠,45℃水浴加热,20000rpm/min高速剪切3min,即得产品。
对比例1
除不含水不溶性***木聚糖外,其余同实施例2。
对比例2
除用水溶性***木聚糖代替水不溶性***木聚糖外,其余同实施例2。
对比例3
除用水不溶性***木聚糖重量份数为0.3外,其余同实施例2。
对比例4
除用水不溶性***木聚糖为酶解法制备外,其余同实施例2。
对比例5
除用壳聚糖替换壳聚糖衍生物(羟丁基壳聚糖)外,其余同实施例4。
将上述制得的壳聚糖基微凝胶乳化剂分别应用于冰淇淋的制备,冰淇淋的制备过程为:将脱脂奶粉溶于水,加入蔗糖、麦芽糖浆、卡拉胶、瓜尔豆胶,溶解,得水溶液。同时,加热脂肪,将实施例1~3及对比例1~5制得的壳聚糖基微凝胶乳化剂溶于其中,得油溶液。接着混合水溶液和油溶液。然后在85℃下杀菌15min,于65℃、18~19Mpa,均质,乳液冷却到2~4℃,于2~4℃老化4h,老化液入冰淇淋机凝冻,制出的软质冰淇淋在-18℃硬化4h以上。
对采用相同工艺条件、添加相同量的壳聚糖基微凝胶乳化剂(按冰淇淋质量的0.2%添加)所得的8组冰淇淋样品进行如下测试:
产品稳定性测试
分别对对8组冰淇淋样品进行感官评价,感官评价标准如表1所示:
表1感官评价标准
以20人一组成立评价小组,每组冰淇淋样品评价结果均为20名成员的平均值,统计评价结果如表2所示:
表2感官评价试验结果
外形 | 口感 | |
实施例1 | 9.6 | 9.4 |
实施例2 | 10 | 9.8 |
实施例3 | 9.3 | 9.5 |
对比例1 | 7.2 | 7.4 |
对比例2 | 8.3 | 7.9 |
对比例3 | 7.7 | 8.1 |
对比例4 | 7.3 | 7.6 |
对比例5 | 8.6 | 8.7 |
由表1和表2可知,实施例1~3制得的壳聚糖基微凝胶乳化剂应用于冰淇淋制备所得产品外形和口感俱佳,表明本发明提供的壳聚糖基微凝胶乳化剂能够使冰淇淋外形保持稳定状态,并且提升口感。对比例1~4外形和口感得分均低于实施例1~3,表明水不溶性***木聚糖的水不溶性、制备方法及其在壳聚糖微凝胶乳化剂中的占比对乳化剂的功能有重要影响;对比例5表明壳聚糖衍生物即羟丁基壳聚糖有利于提高壳聚糖基微凝胶乳化剂的性能。
以上所述,仅为本发明的具体实施方式,但本发明的保护范围并不局限于此,本领域普通技术人员对本发明的技术方案所做的其他修改或者等同替换,只要不脱离本发明技术方案的精神和范围,均应涵盖在本发明的权利要求范围当中。
Claims (9)
1.一种壳聚糖基微凝胶乳化剂,其特征在于,包括以下组分:壳聚糖衍生物、卡拉胶、硬脂酰乳酸钠、甘油脂肪酸酯、水不溶性***木聚糖、羧甲基纤维素钠。
2.根据权利要求1所述的壳聚糖基微凝胶乳化剂,其特征在于,所述壳聚糖衍生物为羟丁基壳聚糖;其制备方法如下:取壳聚糖粉末分散于NaOH水溶液中进行碱化处理,N2保护,微波作用18~24 h,滤除多余碱液,挤干,得到固形物;然后将固形物加入到异丙醇水溶液中,随后加入一定体积的1,2-环氧丁烷,微波反应;反应结束后调节pH至中性,滤去不溶物,加入乙醇,离心,真空干燥,得到羟丁基壳聚糖。
3.根据权利要求1所述的壳聚糖基微凝胶乳化剂,其特征在于,所述水不溶性***木聚糖的制备方法为:将植物秸秆粉碎过筛,加入碱性电解水,40 ℃水浴提取2~4 h,然后加酸调节pH为中性,静置1~3 h,取上清液浓缩后离心,加入乙醇,冰箱4 ℃冷藏过夜,离心取沉淀,沉淀再次溶解,离心除去不溶物,蒸去乙醇,冷冻干燥即得水不溶性***木聚糖。
4.根据权利要求3所述的壳聚糖基微凝胶乳化剂,其特征在于,所述水不溶性***木聚糖的制备方法中所加酸为冰醋酸;所加乙醇的体积分数为95%。
5.根据权利要求1所述的壳聚糖基微凝胶乳化剂,其特征在于,所述各组分的重量份数配比为:壳聚糖衍生物10~20份、卡拉胶7~14份、硬脂酰乳酸钠0.1~0.4份、甘油脂肪酸酯0.2~0.5份、水不溶性***木聚糖0.6~2.8份、羧甲基纤维素钠0.3~0.7份。
6.根据权利要求1所述的壳聚糖基微凝胶乳化剂,其特征在于,所述各组分的重量份数配比为:壳聚糖衍生物14~18份、卡拉胶9~12份、硬脂酰乳酸钠0.2~0.3份、甘油脂肪酸酯0.3~0.4份、水不溶性***木聚糖1.5~2.0份、羧甲基纤维素钠0.4~0.6份。
7.根据权利要求1所述的壳聚糖基微凝胶乳化剂,其特征在于,所述各组分的重量份数配比为:壳聚糖衍生物16份、卡拉胶10份、硬脂酰乳酸钠0.25份、甘油脂肪酸酯0.35份、水不溶性***木聚糖1.8份、羧甲基纤维素钠0.5份。
8.一种根据权利要求1~7任一项所述的壳聚糖基微凝胶乳化剂的制备方法,其特征在于,包括以下步骤:
称取相应重量份数的壳聚糖衍生物、卡拉胶、硬脂酰乳酸钠、甘油脂肪酸酯、水不溶性***木聚糖、羧甲基纤维素钠;
将壳聚糖衍生物配制成2.5%wt的壳聚糖基水溶液,70 ℃水浴加热静置去泡;按照相同方法配制5%wt的卡拉胶水溶液;
将壳聚糖基水溶液和卡拉胶水溶液混合,并加入硬脂酰乳酸钠、甘油脂肪酸酯、水不溶性***木聚糖、羧甲基纤维素钠,45℃水浴加热,15000~30000 rpm/min高速剪切1~4min,即得产品。
9.权利要求1~7任一项所述的壳聚糖基微凝胶乳化剂在乳制品制备中的应用,所述乳制品包括酸奶、奶油、干酪、乳冰淇淋、奶片。
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