CN104920584B - 一种壳聚糖‑Nisin核壳微球及其制备方法与应用 - Google Patents
一种壳聚糖‑Nisin核壳微球及其制备方法与应用 Download PDFInfo
- Publication number
- CN104920584B CN104920584B CN201510275303.9A CN201510275303A CN104920584B CN 104920584 B CN104920584 B CN 104920584B CN 201510275303 A CN201510275303 A CN 201510275303A CN 104920584 B CN104920584 B CN 104920584B
- Authority
- CN
- China
- Prior art keywords
- chitosan
- nisin
- core
- shell particles
- preparation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000004309 nisin Substances 0.000 title claims abstract description 72
- 108010053775 Nisin Proteins 0.000 title claims abstract description 51
- NVNLLIYOARQCIX-MSHCCFNRSA-N Nisin Chemical compound N1C(=O)[C@@H](CC(C)C)NC(=O)C(=C)NC(=O)[C@@H]([C@H](C)CC)NC(=O)[C@@H](NC(=O)C(=C/C)/NC(=O)[C@H](N)[C@H](C)CC)CSC[C@@H]1C(=O)N[C@@H]1C(=O)N2CCC[C@@H]2C(=O)NCC(=O)N[C@@H](C(=O)N[C@H](CCCCN)C(=O)N[C@@H]2C(NCC(=O)N[C@H](C)C(=O)N[C@H](CC(C)C)C(=O)N[C@H](CCSC)C(=O)NCC(=O)N[C@H](CS[C@@H]2C)C(=O)N[C@H](CC(N)=O)C(=O)N[C@H](CCSC)C(=O)N[C@H](CCCCN)C(=O)N[C@@H]2C(N[C@H](C)C(=O)N[C@@H]3C(=O)N[C@@H](C(N[C@H](CC=4NC=NC=4)C(=O)N[C@H](CS[C@@H]3C)C(=O)N[C@H](CO)C(=O)N[C@H]([C@H](C)CC)C(=O)N[C@H](CC=3NC=NC=3)C(=O)N[C@H](C(C)C)C(=O)NC(=C)C(=O)N[C@H](CCCCN)C(O)=O)=O)CS[C@@H]2C)=O)=O)CS[C@@H]1C NVNLLIYOARQCIX-MSHCCFNRSA-N 0.000 title claims abstract description 50
- 235000010297 nisin Nutrition 0.000 title claims abstract description 50
- 229920001661 Chitosan Polymers 0.000 title claims abstract description 48
- 239000002245 particle Substances 0.000 title claims abstract description 43
- 239000011258 core-shell material Substances 0.000 title claims abstract description 32
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 239000000243 solution Substances 0.000 claims description 17
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 10
- 239000000725 suspension Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 239000006228 supernatant Substances 0.000 claims description 6
- 229960000583 acetic acid Drugs 0.000 claims description 5
- 239000012362 glacial acetic acid Substances 0.000 claims description 5
- 239000013049 sediment Substances 0.000 claims description 5
- 239000003381 stabilizer Substances 0.000 claims description 5
- 238000005119 centrifugation Methods 0.000 claims description 4
- 238000003760 magnetic stirring Methods 0.000 claims description 4
- 150000003839 salts Chemical class 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 3
- 239000007864 aqueous solution Substances 0.000 claims description 2
- 235000010482 polyoxyethylene sorbitan monooleate Nutrition 0.000 claims description 2
- 229920000053 polysorbate 80 Polymers 0.000 claims description 2
- 238000001556 precipitation Methods 0.000 claims description 2
- 238000009938 salting Methods 0.000 claims description 2
- 239000001509 sodium citrate Substances 0.000 claims description 2
- NLJMYIDDQXHKNR-UHFFFAOYSA-K sodium citrate Chemical compound O.O.[Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NLJMYIDDQXHKNR-UHFFFAOYSA-K 0.000 claims description 2
- PANBYUAFMMOFOV-UHFFFAOYSA-N sodium;sulfuric acid Chemical compound [Na].OS(O)(=O)=O PANBYUAFMMOFOV-UHFFFAOYSA-N 0.000 claims 1
- 238000004321 preservation Methods 0.000 abstract description 7
- 230000000844 anti-bacterial effect Effects 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 6
- 241001274979 Selenotoca multifasciata Species 0.000 abstract description 4
- 241001125843 Trichiuridae Species 0.000 abstract description 4
- 150000001875 compounds Chemical class 0.000 abstract description 4
- 241000194035 Lactococcus lactis Species 0.000 abstract description 3
- 235000014897 Streptococcus lactis Nutrition 0.000 abstract description 3
- 239000002253 acid Substances 0.000 abstract description 3
- 230000007935 neutral effect Effects 0.000 abstract description 3
- 241001596950 Larimichthys crocea Species 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract description 2
- 239000000047 product Substances 0.000 description 16
- 241000894006 Bacteria Species 0.000 description 6
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 6
- 241000251468 Actinopterygii Species 0.000 description 5
- 108090000623 proteins and genes Proteins 0.000 description 5
- 239000011257 shell material Substances 0.000 description 5
- 235000013373 food additive Nutrition 0.000 description 4
- 239000002778 food additive Substances 0.000 description 4
- 244000005700 microbiome Species 0.000 description 4
- 239000003755 preservative agent Substances 0.000 description 4
- 230000002335 preservative effect Effects 0.000 description 4
- 102000004169 proteins and genes Human genes 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000005253 cladding Methods 0.000 description 3
- 239000003814 drug Substances 0.000 description 3
- 235000013305 food Nutrition 0.000 description 3
- 230000001408 fungistatic effect Effects 0.000 description 3
- 238000001802 infusion Methods 0.000 description 3
- 239000002504 physiological saline solution Substances 0.000 description 3
- 229920000136 polysorbate Polymers 0.000 description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- 241000356842 Larimichthys polyactis Species 0.000 description 2
- 230000000845 anti-microbial effect Effects 0.000 description 2
- 230000003385 bacteriostatic effect Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 2
- 230000009881 electrostatic interaction Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 150000004676 glycans Chemical class 0.000 description 2
- 230000036039 immunity Effects 0.000 description 2
- 230000001976 improved effect Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000003910 polypeptide antibiotic agent Substances 0.000 description 2
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- LCPVQAHEFVXVKT-UHFFFAOYSA-N 2-(2,4-difluorophenoxy)pyridin-3-amine Chemical compound NC1=CC=CN=C1OC1=CC=C(F)C=C1F LCPVQAHEFVXVKT-UHFFFAOYSA-N 0.000 description 1
- 206010010356 Congenital anomaly Diseases 0.000 description 1
- 102000004190 Enzymes Human genes 0.000 description 1
- 108090000790 Enzymes Proteins 0.000 description 1
- 241000233866 Fungi Species 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- 125000000738 acetamido group Chemical group [H]C([H])([H])C(=O)N([H])[*] 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 239000003242 anti bacterial agent Substances 0.000 description 1
- 229940088710 antibiotic agent Drugs 0.000 description 1
- 239000000427 antigen Substances 0.000 description 1
- 102000036639 antigens Human genes 0.000 description 1
- 108091007433 antigens Proteins 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000003124 biologic agent Substances 0.000 description 1
- 230000004071 biological effect Effects 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000004320 controlled atmosphere Methods 0.000 description 1
- 238000013270 controlled release Methods 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- WBZKQQHYRPRKNJ-UHFFFAOYSA-L disulfite Chemical compound [O-]S(=O)S([O-])(=O)=O WBZKQQHYRPRKNJ-UHFFFAOYSA-L 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000012377 drug delivery Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000000796 flavoring agent Substances 0.000 description 1
- 235000019634 flavors Nutrition 0.000 description 1
- 238000001476 gene delivery Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 150000002632 lipids Chemical class 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000002503 metabolic effect Effects 0.000 description 1
- 239000000693 micelle Substances 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 230000035764 nutrition Effects 0.000 description 1
- 230000000050 nutritive effect Effects 0.000 description 1
- 244000045947 parasite Species 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 238000000053 physical method Methods 0.000 description 1
- 229920000867 polyelectrolyte Polymers 0.000 description 1
- 108090000765 processed proteins & peptides Proteins 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- CHQMHPLRPQMAMX-UHFFFAOYSA-L sodium persulfate Substances [Na+].[Na+].[O-]S(=O)(=O)OOS([O-])(=O)=O CHQMHPLRPQMAMX-UHFFFAOYSA-L 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 210000004881 tumor cell Anatomy 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
- 229960005486 vaccine Drugs 0.000 description 1
Landscapes
- Cosmetics (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
本发明公开了一种壳聚糖‑Nisin核壳微球及其制备方法与应用,所述壳聚糖‑Nisin核壳微球为壳聚糖包覆Nisin的核壳材料,该材料的制备是在酸性条件下用壳聚糖对乳酸链球菌进行包埋,形成包合物,以降低其空间阻力,提高其稳定性,增强其抗菌活力,降低环境影响,使其功效在不同环境中得到保证,同时具有良好的生物相容性、低毒性、生物可降解性等优点。非常适合于水产品(保鲜条件为中性或碱性),特别是黄鱼鲳鱼和带鱼的保鲜。
Description
技术领域
本发明涉及一种适用于水产品保鲜的壳聚糖-Nisin核壳微球及其制备方法,并将壳聚糖-Nisin核壳微球用于鱼类的保鲜。
背景技术
壳聚糖应用广泛,目前越来越多应用于生物医学包括药物输送、基因传递、伤口痊愈、抗菌应用、组织工程、疫苗的传递。壳聚糖的诸多应用归功于它优异的功能多样性,它能以溶液、凝胶及纳米或微粒的形式得以利用。壳聚糖纳米/微粒系统可在促进基因、蛋白质生物制剂和抗原的递迭等特别功能方面得到应用。当开发壳聚糖纳米/微粒系统应用于药物或者蛋白质的传递时,对粒径、粒度分布、表面电荷等特性的控制十分重要,因为这些参数对释放动力学有重要影响。但是,由于市售壳聚糖分子量大、水溶性差,而使其应用受到极大限制。
天然抗菌肽是一类广泛存在于自然界中的小肽类物质,是机体先天性免疫的主要成分,对细菌、真菌、寄生虫、病毒、肿瘤细胞等有着广泛的抑制作用。随着抗生素耐药微生物的出现,抗菌肽在医药行业和食品添加剂行业得到越来越广泛的应用。其中,乳酸链球菌素(Nisin) 已获得国标允许在部分食品中进行实际应用。然而Nisin的生物学活性经常因为与食物中的某些成分(如蛋白质、脂质和促代谢酶等)相互作用而丧失,严重影响其功效;另外,Nisin抗菌谱窄且只能在pH低的条件下发挥活性。
水产品具有味道鲜美,营养价值高等特点,深受消费者的青睐。但是,由于水产品自身蛋白质和水含量较高,在加工、运输、贮藏等环节易被微生物污染而腐败。因此,水产品保鲜主要是控制水产品中微生物的生长繁殖。目前,我国水产品保鲜主要有物理法和化学法。物理法主要是通过低温、辐照、气调等方式来实现,化学法则是利用化学防腐剂。其中,低温保鲜存在温度设定要求高,配套设施投资较大等缺点,限制了其在水产品中的应用。化学防腐剂的使用使得微生物产生抗药性而影响抑菌效果,且化学防腐剂还会在水产品中残留,存在安全隐患。物理和化学法保鲜远远不能满足人们对鲜活水产品及其制品的需求,因此,天然、无毒、经济适用的水产品保鲜剂具有巨大的优势。
发明内容
本发明的目的是克服Nisin抗菌谱窄,且只能在pH低的条件下发挥活性等缺点,提供一种壳聚糖-Nisin核壳微球及其制备方法与应用。
本发明的目的是通过以下技术方案实现的:一种壳聚糖-Nisin核壳微球,所述壳聚糖-Nisin核壳微球的核是Nisin颗粒,壳是分子量为5W~10W的壳聚糖,微球的粒径为600~1100nm。
上述壳聚糖-Nisin核壳微球的制备方法包括以下步骤制备:
(1)壳聚糖溶液的制备:将1-3g壳聚糖溶于0.9L纯水中,混合均匀后加入9~18ml的无水冰醋酸,得到壳聚糖溶液;
(2)壳聚糖-Nisin悬浮液的制备:向上述壳聚糖溶液中加入Nisin,所述Nisin与壳聚糖质量比为1:1~3,待混合均匀后,以0.5~6ml/min的速度加入0.1L浓度为0.5M沉淀盐溶液,再加入5~10ml的吐温80作为非离子稳定剂,在磁力搅拌下搅拌2-5h;
(3)干燥:将步骤(2)所得的悬浮液离心10min,弃去上清液,将沉淀物保存于-80℃冰箱中,冻干,最后得到壳聚糖-Nisin核壳微球。
进一步地,所述沉淀盐溶液为柠檬酸钠水溶液或硫酸钠水溶液。
进一步地,所述步骤3中,悬浮液离心的转速为4000r/min以上。
上述壳聚糖-Nisin核壳微球的应用为:将壳聚糖-Nisin核壳微球用于保鲜条件为中性或碱性的水产品的保鲜。
本发明在酸性条件下用壳聚糖对乳酸链球菌进行包埋,形成包合物,降低其空间阻力,提高其稳定性,增强其抗菌活力,降低环境影响,使其功效在不同环境中得到保证,同时具有良好的生物相容性、低毒性、生物可降解性等优点。非常适合于水产品,特别是黄鱼鲳鱼和带鱼的保鲜。具体包括以下有益效果:
(1)本发明Nisin颗粒外包覆壳聚糖,形成壳聚糖-Nisin核壳结构,包覆后的颗粒大小为600~1100nm,而细菌等微生物的大小约为微米级,这样便于Nisin和细菌间的特异性作用和静电作用,提高了其抑菌效果;
(2)壳聚糖本身也具备良好的成膜性和抑菌作用,用壳聚糖包覆Nisin不仅提高了Nisin的杀菌作用,同时,壳聚糖的成膜性有利于防腐剂(Nisin)在水产品表面形成一个致密的隔离膜,将水产品与外界细菌隔离。此外,壳聚糖-Nisin核壳微球相当于一个控释系统,芯材Nisin的释放速度具有可控性,能延长其抑菌时间,最大程度上保持水产品的营养和感官特性,延长其货架期。
(3)本发明用壳聚糖对Nisin进行包埋,形成的壳聚糖-Nisin核壳微球与游离态Nisin相比,空间阻力下降,稳定性提高,抗菌活力增强,在中性或碱性的食品基质也能发挥良好的抑菌活性,改善了Nisin只能在pH低的条件下才能发挥抑菌活性的缺点,大大提高了其使用范围和效率,为Nisin在水产品中的保鲜开辟了新的道路。
(4)通过控制核壳材料的配比、沉淀盐的添加速度、反应时间,相比于现有技术,大大提高了对Nisin包埋率。
(5)本发明提供的一种适用于水产品保鲜的壳聚糖包埋Nisin的制备方法简单易行,工艺合理。
附图说明
图1本发明工艺流程示意图;
图2a 为未包埋Nisin 的壳聚糖颗粒的SEM图,图2b为实施例1制备得到的壳聚糖-Nisin 核壳微球的SEM图。
具体实施方式
不同于现有的包埋技术,本发明制备壳聚糖-Nisin核壳微球的基于以下原理:壳聚糖分子结构中含有大量的羟基、氨基及部分乙酰氨基等基团,在稀酸中,其中的-NH2被质子化为-NH3 +,破坏分子中原有氢键和晶格,壳聚糖溶解,此时壳聚糖成为一种带正电荷的线形聚电解质。由于Nisin分子末端含有氨基和羧基,且Nisin分子通过硫醚键形成五个内环,具有两亲结构。因此,壳聚糖中的-OH可与Nisin中的-COOH作用,Nisin的疏水区域处于核心位置,亲水区域与壳聚糖相邻,壳聚糖处于最外层。由当加入沉淀盐后,使得壳聚糖的溶解度下降,处于外层的壳聚糖分子主链由于布朗运动而形成球形胶束,随着搅拌的不断进行,逐渐形成悬浮液。经离心、冻干便得到壳聚糖-Nisin核壳微球。具体的制备流程如图1所示。下面结合实施例对本发明作进一步说明。
实施例1:本实施例制备壳聚糖-Nisin核壳微球。
准确称取1.000g壳聚糖溶于900ml纯水中,加入9ml冰醋酸充分溶解,搅拌,超声10min。向上叙溶液中准确加入1.000gNisin,待混合均匀后,用输液泵以0.5ml/min的速度加入100ml浓度为0.5M柠檬酸三钠溶液。再加入5ml吐温80作为非离子稳定剂,在磁力搅拌器下搅拌2h。所得的悬浮液在6000r/min,4℃下离心10min,弃去上清液,所得沉淀物置于-80℃冰箱中,冻干,最后得到壳聚糖包埋的Nisin颗粒。
检测结果:用高效液相法测步骤2弃去的上清液中的Nisin的含量,得到Nisin的包埋率为58%;通过激光粒度仪,测得核壳微球的平均粒径,其平均粒径1019±53.3nm,接近于细菌等微生物的大小,便于Nisin和细菌间的特异性作用和静电作用,提高了其抑菌效果。通过比较未包埋Nisin的壳聚糖(图2a)与包埋Nisin后的颗粒(图2b)可以看出,与未包埋Nisin的壳聚糖颗粒相比,后者颗粒较大,与颗粒的平均粒径检测结果的趋势相吻合,这说明壳聚糖-Nisin核壳结构的形成。Nisin外包覆一层壳聚糖外壳,不仅能提高Nisin的杀菌作用,同时,壳聚糖良好的成膜性也有利于在水产品外形成致密的隔离膜。
参照Nisin在食品添加剂使用限量及其他因素,将本实施例制备得到的核壳微球0.5g溶于1L质量分数为0.5%生理盐水中,用于新鲜带鱼的保鲜。结果表明,与对照组中添加游离态的Nisin相比,其保质期延长10天。
实施例2:本实施例制备壳聚糖-Nisin核壳微球。
准确称取3.000g壳聚糖溶于900ml纯水中,添加18ml的冰醋酸充分溶解,搅拌,超声10min。向上叙溶液中准确加入1.500gNisin,待混合均匀后,用输液泵以2ml/min的速度加入0.5M硫酸钠溶液。再加入10ml吐温80作为非离子稳定剂,在磁力搅拌器下搅拌3.5h。所得的悬浮液在8000r/min,4℃下离心10min,弃去上清液,所得沉淀物置于-80℃冰箱中,冻干,最后得到壳聚糖包埋的Nisin颗粒。
检测结果:此配方制得的包合物,Nisin的包埋率为62%,平均粒径930±45.8nm。
参照Nisin在食品添加剂使用限量及其他因素,将本实施例制备得到的核壳微球0.75g溶于1L质量分数为0.5%生理盐水中,用于小黄鱼的保鲜。结果表明,与与对照组中添加游离态的Nisin相比,其保质期延长13天。
实施例3:本实施例制备壳聚糖-Nisin核壳微球。
准确称取3.000g壳聚糖溶于900ml纯水中,添加13.5ml的冰醋酸充分溶解,搅拌,超声10min。向上叙溶液中准确加入1.000gNisin,待混合均匀后,用输液泵以6ml/min的速度加入100ml0.5M柠檬酸三钠溶液。再加入8ml吐温80作为非离子稳定剂。在磁力搅拌器下搅拌5h。所得的悬浮液在8000r/min,4℃下离心10min,弃去上清液,所得沉淀物置于-80℃冰箱中,冻干,最后得到壳聚糖包埋的Nisin。
检测结果:此配方制得的包合物,Nisin的包埋率为61%,平均粒径677±35.6nm。
参照Nisin在食品添加剂使用限量及其他因素,将本实施例制备得到的核壳微球1.0g溶于1L质量分数为0.5%生理盐水中,用于鲳鱼的保鲜。结果表明,与对照组中添加游离态的Nisin相比,其保质期延长18天。
以上实施例中通过本发明的方法,用不同浓度的壳聚糖包埋的Nisin处理的带鱼、小黄鱼、鲳鱼的感官品质明显优于未处理组,处理组鱼类的色泽、气味、形态与组织弹性均优于未处理组,且有效地降低了鱼类保鲜过程中的菌落总数,延长了其货架期。
Claims (3)
1.一种壳聚糖-Nisin核壳微球的制备方法,所述壳聚糖-Nisin核壳微球的核是Nisin颗粒,壳是分子量为5W~10W的壳聚糖,微球的粒径为600~1100nm,其特征在于,该方法包括以下步骤制备:
(1)壳聚糖溶液的制备:将1g-3g壳聚糖溶于0.9L纯水中,混合均匀后加入9ml~18ml的无水冰醋酸,得到壳聚糖溶液;
(2)壳聚糖-Nisin悬浮液的制备:向上述壳聚糖溶液中加入Nisin,所述Nisin与壳聚糖质量比为1:1~3,待混合均匀后,以0.5ml/min~6ml/min的速度加入0.1L浓度为0.5M沉淀盐溶液,再加入5ml~10ml的吐温80作为非离子稳定剂,在磁力搅拌下搅拌2-5h;
(3)干燥:将步骤(2)所得的悬浮液离心10min,弃去上清液,将沉淀物保存于-80℃冰箱中,冻干,最后得到壳聚糖-Nisin核壳微球。
2.根据权利要求1所述的方法,其特征在于,所述沉淀盐溶液为柠檬酸钠水溶液或硫酸钠水溶液。
3.根据权利要求1所述的方法,其特征在于,所述步骤(3)中,悬浮液离心的转速为4000r/min以上。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201510275303.9A CN104920584B (zh) | 2015-05-27 | 2015-05-27 | 一种壳聚糖‑Nisin核壳微球及其制备方法与应用 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201510275303.9A CN104920584B (zh) | 2015-05-27 | 2015-05-27 | 一种壳聚糖‑Nisin核壳微球及其制备方法与应用 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN104920584A CN104920584A (zh) | 2015-09-23 |
CN104920584B true CN104920584B (zh) | 2018-02-27 |
Family
ID=54108295
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201510275303.9A Expired - Fee Related CN104920584B (zh) | 2015-05-27 | 2015-05-27 | 一种壳聚糖‑Nisin核壳微球及其制备方法与应用 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN104920584B (zh) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112088882B (zh) * | 2020-09-04 | 2022-05-20 | 浙大宁波理工学院 | 一种抗菌性纳米纤维素微胶囊及其制备方法 |
CN115568545B (zh) * | 2021-06-21 | 2024-05-17 | 扬州大学 | 一种壳聚糖修饰蛋清蛋白-乳酸链球菌素纳米颗粒及其制备方法和抗菌应用 |
CN114431421A (zh) * | 2022-01-26 | 2022-05-06 | 四川雅妹子生态食品股份有限公司 | 一种发酵剂、制备方法及其应用 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101190976A (zh) * | 2006-12-01 | 2008-06-04 | 北京印刷学院 | 一种具有控制释放功能的抗菌包装材料 |
CN101664111A (zh) * | 2009-09-25 | 2010-03-10 | 浙江省农业科学院 | 包埋α-半乳糖苷酶的壳聚糖纳米粒子及其制备方法 |
CN104472646A (zh) * | 2014-11-10 | 2015-04-01 | 天津科技大学 | 一种适用于高温烘焙食品的Nisin双层微胶囊的制备方法 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20070046386A (ko) * | 2005-10-31 | 2007-05-03 | 경남대학교 산학협력단 | 항균제가 함유된 서방성 미세캡슐을 사용하여 김치의과숙성을 억제하는 방법 |
-
2015
- 2015-05-27 CN CN201510275303.9A patent/CN104920584B/zh not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101190976A (zh) * | 2006-12-01 | 2008-06-04 | 北京印刷学院 | 一种具有控制释放功能的抗菌包装材料 |
CN101664111A (zh) * | 2009-09-25 | 2010-03-10 | 浙江省农业科学院 | 包埋α-半乳糖苷酶的壳聚糖纳米粒子及其制备方法 |
CN104472646A (zh) * | 2014-11-10 | 2015-04-01 | 天津科技大学 | 一种适用于高温烘焙食品的Nisin双层微胶囊的制备方法 |
Non-Patent Citations (3)
Title |
---|
A comparative study between the antibacterial effect of nisin and nisin-loaded chitosan/alginate nanoparticles on the growth of Staphylococcus aureus in raw and pasteurized milk samples;Zohri M, et al;《Probiotics and Antimicrobial Proteins》;20101231;第2卷;第258-266页 * |
壳聚糖、Nisin涂膜在鲢鱼块冷藏保鲜中的应用;张进杰,等;《中国食品学报》;20130831;第13卷(第8期);第132-138页 * |
壳聚糖微球的研究进展;方华丰,等;《中国医院药学杂志》;19991231;第19卷(第12期);第744-745页 * |
Also Published As
Publication number | Publication date |
---|---|
CN104920584A (zh) | 2015-09-23 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
Mahmoud et al. | Survivability of alginate-microencapsulated Lactobacillus plantarum during storage, simulated food processing and gastrointestinal conditions | |
Bakshi | Nanotoxicity in systemic circulation and wound healing | |
Lee et al. | Microencapsulation of probiotic Lactobacillus acidophilus KBL409 by extrusion technology to enhance survival under simulated intestinal and freeze-drying conditions | |
Zhang et al. | The increased viability of probiotic Lactobacillus salivarius NRRL B-30514 encapsulated in emulsions with multiple lipid-protein-pectin layers | |
Priya et al. | Enhanced survival of probiotic Lactobacillus acidophilus by encapsulation with nanostructured polyelectrolyte layers through layer-by-layer approach | |
Shi et al. | Encapsulation of probiotic Lactobacillus bulgaricus in alginate–milk microspheres and evaluation of the survival in simulated gastrointestinal conditions | |
JP6820340B2 (ja) | 腸内生存率が高められた乳酸菌のコーティング方法 | |
Manojlović et al. | Encapsulation of probiotics for use in food products | |
CN104920584B (zh) | 一种壳聚糖‑Nisin核壳微球及其制备方法与应用 | |
Bosnea et al. | Microencapsulated cells of Lactobacillus paracasei subsp. paracasei in biopolymer complex coacervates and their function in a yogurt matrix | |
Xing et al. | Effect of porous starch concentrations on the microbiological characteristics of microencapsulated Lactobacillus acidophilus | |
CN103932186A (zh) | 一种长双歧杆菌微胶囊及其制备方法 | |
CN112205628A (zh) | 一种具有双包埋功能的复合凝聚物及其制备方法与应用 | |
CN114847484A (zh) | 一种负载益生菌的海藻酸盐微胶囊及其制备方法与应用 | |
Popov et al. | Food nanotechnologies | |
Liu et al. | Improved viability of probiotics encapsulated by layer-by-layer assembly using zein nanoparticles and pectin | |
CN112335884A (zh) | 一种新型益生菌微球及其制备方法 | |
CN114916675A (zh) | 一种提高益生菌存活率的水包油包水型复乳凝胶珠、制备方法和应用 | |
Nooshkam et al. | New technological trends in probiotics encapsulation for their stability improvement in functional foods and gastrointestinal tract | |
CN112088882B (zh) | 一种抗菌性纳米纤维素微胶囊及其制备方法 | |
Mutukumira et al. | Microencapsulation of probiotic bacteria | |
Tian et al. | Effect of different calcium salts and methods for triggering gelation on the characteristics of microencapsulated Lactobacillus plantarum LIP-1 | |
CN104188049A (zh) | 一种稳定的纳他霉素悬浮液的制备方法及其应用 | |
Cook et al. | Microencapsulation of probiotic bacteria into alginate hydrogels | |
El-Shafei et al. | Effect of different microencapsulating materials on survivability of Streptococcus thermophilus under simulated food processing and gastrointestinal conditions |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180227 Termination date: 20210527 |
|
CF01 | Termination of patent right due to non-payment of annual fee |