CN111955549A - 一种甜茶麦冬酸奶及其制备方法 - Google Patents
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Abstract
一种甜茶麦冬酸奶及其制备方法,按重量份数由如下材料制备:奶粉40~50份,麦冬溶液15~20份,甜茶提取物5~10份,奶油5~10份,琼胶10~15份,酸奶发酵剂5~10份,转谷氨酰胺酶1~3份。本发明的酸奶采用甜茶作为甜味剂,即能起到甜味剂的作用,同时也不会对身体造成过多的影响,更加健康。另外,本发明在麦冬水溶液中加入碳酸钙,能中和其酸性,降低对酸奶发酵的影响。同时本发明采用甜茶代替蔗糖,因此不会抑制乳酸菌的生长,缩短了酸奶发酵的时间,提高了生产周期。本甜茶麦冬酸奶采用甜茶作为甜味剂能有效减少用量,还可以降低成本,提高收益。
Description
技术领域
本发明涉及一种酸奶的生产方法,尤其是一种甜茶麦冬酸奶,属于食品生产技术领域。
背景技术
酸奶是一种经乳酸菌发酵制得的乳制品,有益于人体健康,具有丰富的营养。由于乳酸菌的作用,与一般中性乳相比酸奶具有更丰富的肽和比例更合理的氨基酸,从而使酸奶中的蛋白质具有更高的生化可利用性。目前大中城市,酸奶的销量逐日扩大,因此人们对酸奶的品质的要求也越来越高。传统酸奶一般会添加4%~9%的蔗糖作为甜味剂来改善口味。因此糖尿病人或肥胖人群不宜长时间食用这种酸奶。此外,目前市面上的酸奶制品多以凝固型,搅拌型和添加各种果汁果酱等辅料的果味性居多,但现有的酸奶功能单一,不能满足人们更大的要求。
麦冬,具有养阴生津,润肺清心,津伤口渴,心烦失眠,内热消渴,咽干口燥等功效。甜茶,是蔷薇科悬钩子属植物的一种新品种。甜茶中含有5%的甜茶素,甜茶素的甜度相当于蔗糖的300倍,而热量仅为蔗糖的1%,能更好地满足人们对酸奶的需求。
发明内容
为解决上述存在的不足,本发明提供一种甜茶麦冬酸奶及其制备方法。
为实现上述目的,本发明采用的技术方案是:一种甜茶麦冬酸奶,按重量份数由如下材料制备:奶粉40~50份,麦冬溶液15~20份,甜茶提取物5~10份,奶油5~10份,琼胶10~15份,酸奶发酵剂5~10份,转谷氨酰胺酶1~3份。
优选的,所述的麦冬溶液由麦冬经加水稀释,再加入碳酸钙搅拌均匀,再静止15~20min取上层清液制得。
优选的,所述的甜茶提取物由甜茶叶加水浸提,过滤后并加入碳酸钙搅拌均匀,静止后取上层清液,再浓缩干燥制得。
优选的,所述的酸奶发酵剂为保加利亚乳杆菌和嗜热链球菌。
优选的,所述的保加利亚乳杆菌和嗜热链球菌的比例为1:2。
一种麦冬甜茶酸奶,由以下步骤制得:
(1)奶粉、奶油、甜茶提取物和麦冬溶液在40~45℃下混合溶解;
(2)将将混合后的奶液预热至55~60℃,于15~18MPa均质;
(3)均质后奶液在90℃下杀菌25~30min,杀菌后放置在冷藏室冷却至45℃;
(4)将冷却后的奶液加入转谷氨酰胺酶、酸奶发酵剂和琼胶,密封无菌保存后在42℃下恒温发酵4~4.5h即可制得。
本发明的酸奶采用甜茶作为甜味剂,即能起到甜味剂的作用,同时也不会对身体造成过多的影响,更加健康。另外,本发明在麦冬水溶液中加入碳酸钙,能中和其酸性,降低对酸奶发酵的影响。此外,本甜茶麦冬酸奶能使酸奶口味处于较为合适的酸甜风味,更符合一般消费者的口味,市场适应性更佳。同时不会抑制乳酸菌的生长,缩短了酸奶发酵的时间,提高了生产周期。本甜茶麦冬酸奶采用甜茶作为甜味剂能有效减少用量,还可以降低成本,提高收益。
具体实施方式
下面对本发明实施例中的技术方案进行清晰、完整地描述。显然,所描述的实施例仅是本发明一部分实施例,而不是全部的实施例。基于发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
实施例1
一种甜茶麦冬酸奶,按重量份数由如下材料制备:奶粉40份,麦冬溶液15份,甜茶提取物5份,奶油5份,琼胶10份,酸奶发酵剂5份,转谷氨酰胺酶1份。所述的麦冬溶液由麦冬经加水稀释,再加入碳酸钙搅拌均匀,再静止15min取上层清液制得。所述的甜茶提取物由甜茶叶加水浸提,过滤后并加入碳酸钙搅拌均匀,静止后取上层清液,再浓缩干燥制得。酸奶发酵剂为保加利亚乳杆菌和嗜热链球菌以1:2的比例混合。
一种麦冬甜茶酸奶,由以下步骤制得:
(1)奶粉、奶油、甜茶提取物和麦冬溶液在40℃下混合溶解;
(2)将将混合后的奶液预热至55℃,于15MPa均质;
(3)均质后奶液在90℃下杀菌25min,杀菌后放置在冷藏室冷却至45℃;
(4)将冷却后的奶液加入转谷氨酰胺酶、酸奶发酵剂和琼胶,密封无菌保存后在42℃下恒温发酵4h即可制得。
实施例2
一一种甜茶麦冬酸奶,按重量份数由如下材料制备:奶粉50份,麦冬溶液20份,甜茶提取物10份,奶油10份,琼胶15份,酸奶发酵剂10份,转谷氨酰胺酶3份。所述的麦冬溶液由麦冬经加水稀释,再加入碳酸钙搅拌均匀,再静止20min取上层清液制得。所述的甜茶提取物由甜茶叶加水浸提,过滤后并加入碳酸钙搅拌均匀,静止后取上层清液,再浓缩干燥制得。酸奶发酵剂为保加利亚乳杆菌和嗜热链球菌以1:2的比例混合。
一种麦冬甜茶酸奶,由以下步骤制得:
(1)奶粉、奶油、甜茶提取物和麦冬溶液在45℃下混合溶解;
(2)将将混合后的奶液预热至60℃,于18MPa均质;
(3)均质后奶液在90℃下杀菌30min,杀菌后放置在冷藏室冷却至45℃;
(4)将冷却后的奶液加入酸奶发酵剂,密封无菌保存后在42℃下恒温发酵4.5h即可制得。
实施例3
一种甜茶麦冬酸奶,按重量份数由如下材料制备:奶粉45份,麦冬溶液17份,甜茶提取物7份,奶油7份,琼胶12份,酸奶发酵剂7份,转谷氨酰胺酶2份。所述的麦冬溶液由麦冬经加水稀释,再加入碳酸钙搅拌均匀,再静止17min取上层清液制得。所述的甜茶提取物由甜茶叶加水浸提,过滤后并加入碳酸钙搅拌均匀,静止后取上层清液,再浓缩干燥制得。酸奶发酵剂为保加利亚乳杆菌和嗜热链球菌以1:2的比例混合。
一种麦冬甜茶酸奶,由以下步骤制得:
(1)奶粉、奶油、甜茶提取物和麦冬溶液在42℃下混合溶解;
(2)将将混合后的奶液预热至57℃,于16MPa均质;
(3)均质后奶液在90℃下杀菌27min,杀菌后放置在冷藏室冷却至45℃;
(4)将冷却后的奶液加入转谷氨酰胺酶、酸奶发酵剂和琼胶,密封无菌保存后在42℃下恒温发酵4.2h即可制得。
实施例4
一种甜茶麦冬酸奶,按重量份数由如下材料制备:奶粉45份,麦冬溶液15份,甜茶提取物7份,奶油6份,琼胶11份,酸奶发酵剂8份,转谷氨酰胺酶1份。所述的麦冬溶液由麦冬经加水稀释,再加入碳酸钙搅拌均匀,再静止15min取上层清液制得。所述的甜茶提取物由甜茶叶加水浸提,过滤后并加入碳酸钙搅拌均匀,静止后取上层清液,再浓缩干燥制得。酸奶发酵剂为保加利亚乳杆菌和嗜热链球菌以1:2的比例混合。
一种麦冬甜茶酸奶,由以下步骤制得:
(1)奶粉、奶油、甜茶提取物和麦冬溶液在45℃下混合溶解;
(2)将将混合后的奶液预热至55℃,于18MPa均质;
(3)均质后奶液在90℃下杀菌30min,杀菌后放置在冷藏室冷却至45℃;
(4)将冷却后的奶液加入转谷氨酰胺酶、酸奶发酵剂和琼胶,密封无菌保存后在42℃下恒温发酵4h即可制得。
市面上一般酸奶的制备都需要加入一定量的蔗糖作为甜味剂来丰富口味,但添加过多蔗糖不仅会对人体造成较大的负担,同时也会阻碍乳酸菌的生长。而本发明的酸奶采用甜茶作为甜味剂,由于甜茶的甜度为蔗糖的100倍左右,而热量仅为蔗糖的1%。这样即能起到甜味剂的作用,同时也不会对身体造成过多的影响,更加健康。而麦冬有养阴生津,润肺清心,咽干口燥等功效,但溶于水呈酸性,当8%的麦冬溶于水时PH值就会达到4.5左右。因此,如果直接将麦冬加入原料中将会影响乳酸菌的生长和引起部分乳蛋白变形而影响酸奶的品质。而本发明在麦冬水溶液中加入碳酸钙,能中和其酸性,降低对酸奶发酵的影响。
当甜茶配比高于酸奶发酵剂时,则酸奶发酵后过甜;当酸奶发酵剂的配比高于甜茶时,则酸奶发酵后过酸。本甜茶麦冬酸奶,通过控制甜茶、酸奶发酵剂的配比,能使酸奶口味处于较为合适的酸甜风味,更符合一般消费者的口味,市场适应性更佳。同时采用甜茶代替蔗糖,不会因为浓度过高而抑制乳酸菌的生长,从而缩短了酸奶发酵的时间,提高了生产周期。本甜茶麦冬酸奶由于有麦冬、甜茶的成分,因此也具有养阴生津、润肺止咳的功效,同时甜味清爽悠长,口味优佳。同时由于采用甜茶作为甜味剂能有效减少用量,且甜茶的市面成本价格要低于蔗糖,因此还可以降低成本,提高收益。
Claims (6)
1.一种甜茶麦冬酸奶及其制备方法,其特征在于,按重量份数由如下材料制备:奶粉40~50份,麦冬溶液15~20份,甜茶提取物5~10份,奶油5~10份,琼胶10~15份,酸奶发酵剂5~10份,转谷氨酰胺酶1~3份。
2.如权利要求1所述的一种甜茶麦冬酸奶及其制备方法,其特征在于,所述的麦冬溶液由麦冬经加水稀释,再加入碳酸钙搅拌均匀,再静止15~20min取上层清液制得。
3.如权利要求1所述的一种甜茶麦冬酸奶及其制备方法,其特征在于,所述的甜茶提取物由甜茶叶加水浸提,过滤后并加入碳酸钙搅拌均匀,静止后取上层清液,再浓缩干燥制得。
4.如权利要求1所述的一种甜茶麦冬酸奶及其制备方法,其特征在于,所述的酸奶发酵剂为保加利亚乳杆菌和嗜热链球菌。
5.如权利要求4所述的一种甜茶麦冬酸奶及其制备方法,其特征在于,所述的保加利亚乳杆菌和嗜热链球菌的比例为1:2。
6.一种甜茶麦冬酸奶及其制备方法,其特征在于,由以下步骤制得:
(1)奶粉、奶油、甜茶提取物和麦冬溶液在40~45℃下混合溶解;
(2)将将混合后的奶液预热至55~60℃,于15~18MPa均质;
(3)均质后奶液在90℃下杀菌25~30min,杀菌后放置在冷藏室冷却至45℃;
(4)将冷却后的奶液加入转谷氨酰胺酶、酸奶发酵剂和琼胶,密封无菌保存后在42℃下恒温发酵4~4.5h即可制得。
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