CN115005448A - 一种三重包覆的益生菌及其生产方法 - Google Patents
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- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
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- A23L29/00—Foods or foodstuffs containing additives; Preparation or treatment thereof
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- A—HUMAN NECESSITIES
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Abstract
本发明公开了一种三重包覆的益生菌,从内到外包括芯材、用于包裹芯材的隔离层、用于包裹隔离层的第二防护层和用于包裹第二防护层的第一防护层,所述芯材为由益生菌、益生元和钠离子化合物制备而得的益生菌微胶囊,所述隔离层是以壳聚糖制备而成的膜层,第二防护层为海藻酸钠、壳聚糖交联制备而得,第一防护层为海藻酸钠膜层,所述钠离子化合物为柠檬酸钠或者三聚磷酸钠。本发明通过包覆壳聚糖膜层、再包覆壳聚糖‑海藻酸钠交联层、再包覆海藻酸钠膜层,能够使得三层膜之间有一个较好的过渡衔接作用,实现了三重防护的交互,增强了层与层之间的界面作用力,使得防护作用更强大。
Description
技术领域
本发明涉及益生菌领域,具体涉及一种三重包覆的益生菌及其生产方法。
背景技术
益生菌是通过定殖在人体内,改变宿主某一部位菌群组成的一类对宿主有益的活性微生物。通过调节宿主黏膜与系统免疫功能或通过调节肠道内菌群平衡,促进营养吸收保持肠道健康的作用,从而产生有利于健康作用的单微生物或组成明确的混合微生物。
益生菌必须通过胃环境以大量的活菌到达肠道并定居于肠粘膜上才能发挥其生理功能,可通过改变肠道菌群平衡而对人体产生有利影响。然而,有很多活性益生菌在进入肠道前就已经因胃酸和胆汁作用而死亡,因此在宿主体内存活增殖的能力较低,很大程度上影响了他们的益生效果。因此在肠道的存活率也就成为益生菌功效的另一个重要指标。目前为了促进有益菌生长或激活其活性的作用,通常采用包埋的技术将益生菌包埋在合适的材料中。现常见的多为双重或双层包埋,对益生菌的保护作用还是有限度的。为了进一步保护足量的益生菌能直达肠道,本发明提出了一种三重包覆的益生菌及其生产方法。
发明内容
为解决上述问题,本发明目的在于提供一种三重包覆的益生菌及其生产方法,该三重包覆的益生菌通过三重防护,能够使得益生菌直达肠道,有利于肠道中的益生菌发挥更大的作用。本发明还提供了一种三重包覆的益生菌的生产方法,该方法通过包覆壳聚糖膜层、再包覆壳聚糖-海藻酸钠交联层、再包覆海藻酸钠膜层,能够使得三层膜之间有一个较好的过渡衔接作用,增强了层与层之间的界面作用,使得三重防护作用更强。
本发明通过下述技术方案实现:
一种三重包覆的益生菌,从内到外包括芯材、用于包裹芯材的隔离层、用于包裹隔离层的第二防护层和用于包裹第二防护层的第一防护层,所述芯材为由益生菌、益生元和钠离子化合物制备而得的益生菌微胶囊,所述隔离层是以壳聚糖制备而成的膜层,第二防护层为海藻酸钠、壳聚糖交联制备而得,第一防护层为海藻酸钠膜层,所述钠离子化合物为柠檬酸钠或者三聚磷酸钠。
所述益生菌包括有益细菌和/或有益真菌,有益细菌选自乳杆菌属、双歧杆菌属、链球菌属或乳球菌属细菌中的任意一种或至少两种的组合;有益真菌选自酿酒酵母、红曲霉或紫红曲霉中的任意一种或至少两种的组合。
所述益生元为低聚果糖、低聚木糖、低聚异麦芽糖、乳果糖、菊粉、聚葡萄糖、母乳低聚糖、低聚半乳糖中的一种或几种。
益生菌的活度范围为1×106cfu/g-1×1012cfu/g。
如前所述的益生菌的生产方法,包括以下步骤:
(1)、将益生菌、益生元和钠离子化合物经溶化、喷雾干燥获得益生菌微胶囊;
(2)、放置益生菌微胶囊于流化床内,连续喷入壳聚糖醋酸水溶液以包覆益生菌微胶囊,干燥后获得包覆壳聚糖膜层的益生菌微胶囊;
(3)、放置步骤(2)所得的包覆壳聚糖膜层的益生菌微胶囊于氯化钙-壳聚糖醋酸水溶液中,再加入海藻酸钠一次溶液,沉淀过滤,获得具有双层膜层的益生菌微胶囊;
(4)、将步骤(3)所得的益生菌微胶囊放置于流化床内,连续喷入海藻酸钠二次溶液,待干燥10-15min后,再连续喷入氯化钙溶液,干燥后最终获得三重包覆的益生菌。
进一步的,步骤(2)中壳聚糖浓度为1-3wt%。
步骤(3)中海藻酸钠一次溶液中海藻酸钠浓度为1.5-2wt%,壳聚糖浓度为0.5-1wt%,氯化钙浓度为3-5wt%。
步骤(4)中海藻酸钠二次溶液海藻酸钠浓度为2.5-3%,氯化钙浓度为3-5wt%。
步骤(2)中设定进风温度为35~45℃,喷枪雾化压力为0.2~0.5MPa,进气量为60~180m 3/h,喷浆速率1~2g/min。
进一步的,对步骤(3)获得双层膜层的益生菌微胶囊无需水洗直接进行干燥,使其湿度为40-50%时,进行步骤(4)的制备。此方法,能够使得其胶囊表面残留的氯化钙和海藻酸钠二次溶液进行继续反应,使得交联层的厚度增加,有利于防护作用的提升。
实施时,壳聚糖的乙酰度大于90%,最好为92%-95%。
本发明与现有技术相比,具有如下的优点和有益效果:
本发明通过包覆壳聚糖膜层、再包覆壳聚糖-海藻酸钠交联层、再包覆海藻酸钠膜层,能够使得三层膜之间有一个较好的过渡衔接作用,实现了三重防护的交互,增强了层与层之间的界面作用力,使得防护作用更强大。
具体实施方式
为使本发明的目的、技术方案和优点更加清楚明白,下面结合实施例,对本发明作进一步的详细说明,本发明的示意性实施方式及其说明仅用于解释本发明,并不作为对本发明的限定。
实施例1
壳聚糖,食品级,脱乙酰度92%,青岛海普生物技术有限公司;海藻酸钠,食品级,四川华堂聚瑞生物科技有限公司。
(1)、将50g低聚果糖、40g乳酸杆菌、10g柠檬酸钠溶解后,喷雾干燥获得益生菌微胶囊;
(2)、将10g壳聚糖溶解于990g的2wt%醋酸水溶液中备用,放置益生菌微胶囊于流化床内,连续喷入壳聚糖醋酸水溶液以包覆益生菌微胶囊,干燥后获得包覆壳聚糖膜层的益生菌微胶囊;
(3)、将步骤(2)所得的包覆壳聚糖膜层的益生菌微胶囊置于氯化钙-壳聚糖醋酸水溶液中,再加入海藻酸钠一次溶液,沉淀过滤,获得具有双层膜层的益生菌微胶囊,其中海藻酸钠一次溶液中海藻酸钠浓度为1.5wt%,壳聚糖浓度为0.5wt%,氯化钙浓度为5wt%,氯化钙-壳聚糖醋酸水溶液的制备是将50g氯化钙、5g壳聚糖溶解于945g的2wt%醋酸水溶液中;
(4)、将步骤(3)所得的益生菌微胶囊放置于流化床内,连续喷入海藻酸钠二次溶液,待干燥10-15min后,再连续喷入氯化钙溶液,干燥后最终获得三重包覆的益生菌,其中海藻酸钠二次溶液海藻酸钠浓度为2.5%,氯化钙浓度为5wt%。
步骤(2)和步骤(4)中设定进风温度为36℃,喷枪雾化压力为0.5MPa,进气量为80m3/h,喷浆速率1.5g/min。
实施例2
(1)、将45g低聚果糖、40g乳酸杆菌、15g柠檬酸钠溶解后,喷雾干燥获得益生菌微胶囊;
(2)、将20g壳聚糖溶解于980g的2wt%醋酸水溶液中备用,放置益生菌微胶囊于流化床内,连续喷入壳聚糖醋酸水溶液以包覆益生菌微胶囊,干燥后获得包覆壳聚糖膜层的益生菌微胶囊;
(3)、放置步骤(2)所得的包覆壳聚糖膜层的益生菌微胶囊置于氯化钙-壳聚糖醋酸水溶液,再加入海藻酸钠一次溶液,沉淀过滤,获得具有双层膜层的益生菌微胶囊,步骤(3)中海藻酸钠一次溶液中海藻酸钠浓度为2wt%,壳聚糖浓度为1wt%,氯化钙浓度为5wt%;
(4)、将步骤(3)所得的益生菌微胶囊放置于流化床内,连续喷入海藻酸钠二次溶液,待干燥10-15min后,再连续喷入氯化钙溶液,干燥后最终获得三重包覆的益生菌,其中海藻酸钠二次溶液海藻酸钠浓度为3%,氯化钙浓度为5wt%。
步骤(2)和步骤(4)中设定进风温度为36℃,喷枪雾化压力为0.5MPa,进气量为80m3/h,喷浆速率1.5g/min。
实施例3
(1)、将40g低聚果糖、40g乳酸杆菌、20g柠檬酸钠溶解后,喷雾干燥获得益生菌微胶囊;
(2)、将30g壳聚糖溶解于970g的2wt%醋酸水溶液中备用,放置益生菌微胶囊于流化床内,连续喷入壳聚糖醋酸水溶液以包覆益生菌微胶囊,干燥后获得包覆壳聚糖膜层的益生菌微胶囊;
(3)、将15g海藻酸钠、5g壳聚糖溶于980g醋酸水溶液中备用,放置步骤(2)所得的包覆壳聚糖膜层的益生菌微胶囊置于氯化钙-壳聚糖醋酸水溶液,再加入海藻酸钠一次溶液,沉淀过滤,获得具有双层膜层的益生菌微胶囊,步骤(3)中海藻酸钠一次溶液中海藻酸钠浓度为2wt%,壳聚糖浓度为1wt%,氯化钙浓度为5wt%;
((4)、将步骤(3)所得的益生菌微胶囊放置于流化床内,连续喷入海藻酸钠二次溶液,待干燥10-15min后,再连续喷入氯化钙溶液,干燥后最终获得三重包覆的益生菌,其中海藻酸钠二次溶液海藻酸钠浓度为3%,氯化钙浓度为5wt%。
步骤(2)和步骤(4)中设定进风温度为36℃,喷枪雾化压力为0.5MPa,进气量为80m3/h,喷浆速率1.5g/min。
进一步的,对步骤(3)获得双层膜层的益生菌微胶囊无需水洗直接进行干燥,使其湿度为40-50%时,进行步骤(4)的制备。
本发明中,未详细描述的均是现有技术。
以上所述的具体实施方式,对本发明的目的、技术方案和有益效果进行了进一步详细说明,所应理解的是,以上所述仅为本发明的具体实施方式而已,并不用于限定本发明的保护范围,凡在本发明的精神和原则之内,所做的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。
Claims (8)
1.一种三重包覆的益生菌,其特征在于,从内到外包括芯材、用于包裹芯材的隔离层、用于包裹隔离层的第二防护层和用于包裹第二防护层的第一防护层,所述芯材为由益生菌、益生元和钠离子化合物制备而得的益生菌微胶囊,所述隔离层是以壳聚糖制备而成的膜层,第二防护层为海藻酸钠、壳聚糖交联制备而得,第一防护层为海藻酸钠膜层,所述钠离子化合物为柠檬酸钠或者三聚磷酸钠。
2.根据权利要求1所述的三重包覆的益生菌,其特征在于,所述益生菌包括有益细菌和/或有益真菌,有益细菌选自乳杆菌属、双歧杆菌属、链球菌属或乳球菌属细菌中的任意一种或至少两种的组合;有益真菌选自酿酒酵母、红曲霉或紫红曲霉中的任意一种或至少两种的组合。
3.根据权利要求1所述的三重包覆的益生菌,其特征在于,所述益生元为低聚果糖、低聚木糖、低聚异麦芽糖、乳果糖、菊粉、聚葡萄糖、母乳低聚糖、低聚半乳糖中的一种或几种。
4.根据权利要求1所述的益生菌的生产方法,其特征在于,包括以下步骤:
(1)、将益生菌、益生元和钠离子化合物经溶化、喷雾干燥获得益生菌微胶囊;
(2)、将壳聚糖溶解于醋酸水溶液中备用,放置益生菌微胶囊于流化床内,连续喷入壳聚糖醋酸水溶液以包覆益生菌微胶囊,干燥后获得包覆壳聚糖膜层的益生菌微胶囊;
(3)、放置步骤(2)所得的包覆壳聚糖膜层的益生菌微胶囊于氯化钙-壳聚糖醋酸水溶液中,再加入海藻酸钠一次溶液,沉淀过滤,获得具有双层膜层的益生菌微胶囊;
(4)、将步骤(3)所得的益生菌微胶囊放置于流化床内,连续喷入海藻酸钠二次溶液,待干燥10-15min后,再连续喷入氯化钙溶液,干燥后最终获得三重包覆的益生菌。
5.根据权利要求4所述的益生菌的生产方法,其特征在于,步骤(2)中壳聚糖
浓度为1-3wt%。
6.根据权利要求4所述的益生菌的生产方法,其特征在于,步骤(3)中海藻酸
钠一次溶液中海藻酸钠浓度为1.5-2wt%,壳聚糖浓度为0.5-1wt%,氯化钙浓度为3-5wt%。
7.根据权利要求4所述的益生菌的生产方法,其特征在于,步骤(4)中海藻酸
钠二次溶液海藻酸钠浓度为2.5-3%,氯化钙浓度为3-5wt%。
8.根据权利要求4所述的益生菌的生产方法,其特征在于,步骤(2)中设定进
风温度为35~45℃,喷枪雾化压力为0.2~0.5MPa,进气量为60~180m 3/h,喷浆速率1~2g/min。
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