CN107927517A - 基于食品级竹醋‑壳聚糖的复合水产品保鲜膜 - Google Patents
基于食品级竹醋‑壳聚糖的复合水产品保鲜膜 Download PDFInfo
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- A23L3/00—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs
- A23L3/34—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by treatment with chemicals
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
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- A23L3/3463—Organic compounds; Microorganisms; Enzymes
- A23L3/3562—Sugars; Derivatives thereof
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Abstract
本发明提供应用于水产品防腐保鲜的食品包装膜的制备方法,具体涉及一种使用食品级竹醋为溶剂的,包含食品级壳聚糖以及其它活性成分的复合水产品保鲜膜,其主要制备过程:先将不同分子量的壳聚糖2~3种用食品级竹醋中溶解,然后加入甘油得到混合液Ⅰ;将明胶和海藻酸钠用食品级竹醋液超声溶解均匀得到混合液Ⅱ;将茶多酚和槲皮素用食品级竹醋溶解制成溶液Ⅲ,将三种溶液以一定比例混合后,将混合膜液涂布在聚碳酸酯板上,自然干燥成膜。制得保鲜膜除了具备良好的包装性能,同时且具有良好的抗菌性以及抗氧化性能,同时可降解、可食用等特性。主要用于水产品的包装保鲜,有效延长其保质期,具有广阔应用前景。
Description
技术领域
本发明属于水产品保鲜防腐的制备领域,具体涉及一种基于食品级竹醋的壳聚糖复合保鲜膜。
背景技术
目前常用的食品包装塑料,具有价格低、强度高和耐腐蚀等优点。但其不易降解,容易造成“白色污染”等环境问题,因此开发新型可降解包装材料势在必行。壳聚糖无毒无害,具有优良的成膜性、可降解性和一定的抑菌性,并且生物相容性良好。壳聚糖的食品包装膜研究一直是一个热点。“茶多酚改性胶原蛋白-壳聚糖复合膜对冷藏斜带石斑鱼的保鲜效果”(于林等,食品科学,2017,38(3):220-226)一文,以巯基含量、肌动球蛋白含量、Ca2+-ATPase活性和感官评定值、K值、pH值、TVB-N值、菌落总数为考察指标表明,茶多酚改性胶原蛋白-壳聚糖复合膜能有效延缓斜带石斑鱼的腐败变质。
壳聚糖的性质很大程度上受其分子量的影响,本发明中采用不同分子量的壳聚糖(低密度水溶性以及高密度非水溶性),可以保留各自优势,如良好的延展性,成膜性以及抑菌性能。目前高密度非水溶性壳聚糖的溶剂基本使用醋酸,它只起到溶剂的作用,而本发明中使用的溶剂为一定浓度的食品级竹醋溶液,不仅能够溶解高分子量的壳聚糖,且与壳聚糖有协同的抗氧、抗菌作用。竹醋液具有许多优良特性,在众多领域中呈现出巨大的应用潜力。它含有酸类物质、醇、酮、醛以及酚类等物质,作为本发明的溶剂,它与茶多酚,槲皮素的协同抗氧化作用也得以证实。而甘油、明胶、海藻酸钠、茶多酚以及槲皮素,分别起到增塑、交联,抗菌以及抗氧化的功效。
本发以食品级竹醋为溶剂的,包含食品级壳聚糖、甘油、明胶、海藻酸钠、茶多酚以及槲皮素的食品保鲜膜。主要用于水产品的包装保鲜,有效延长其保质期。
发明内容
本发以食品级竹醋为溶剂的,将几种不同分子量的壳聚糖进行溶解加入甘油,进而与明胶、海藻酸钠竹醋液以及茶多酚、槲皮素竹醋液共混,涂布成膜。主要用于水产品的包装保鲜,有效延长其保质期。
为实现本发明的目的,采用如下技术方案:
将2~3种壳聚糖(0.1~1.0g),溶解在100mL浓度为(0.1~5%)食品级竹醋液中,加入甘油(0.1~1.0g),继续搅拌均匀,得到混合液Ⅰ。
将明胶(0.05~1.0g)和海藻酸钠(0.05~1.0g)溶解在100mL浓度为(0.1~5%)食品级竹醋液中,超声溶解均匀,得到混合液Ⅱ;
将茶多酚(0.01~0.1g)和槲皮素(0.01~0.2g),用100mL浓度为(0.1~5%)食品级竹醋溶解制成溶液Ⅲ;
优选的,将3~4份的溶液Ⅰ,2~3份的混合液Ⅱ,以及1份的溶液Ⅲ搅拌混合均匀,超声除去气泡后,将混合膜液涂布在聚碳酸酯板上,自然干燥成膜。
壳聚糖为高密度水不溶性壳聚糖2种,以及低密度水溶性壳聚糖1种。
溶剂均为食品级竹醋液,其浓度为(0.1~1.5%)。
具体实施方式
实施例1:
抗氧化性研究,对DPPH清除能力测试。
将2份的溶液Ⅰ,2份的混合液Ⅱ,以及1份的溶液Ⅲ混合后,制膜。剪下5ⅹ3mm,加入到50%的DPPH乙醇溶液中,避光存放30分钟后,于750nm处测量其吸光度A,不加膜的A值为对照。对DPPH的清除率可达到35~59%.
实施例2:
抗菌性能,对金黄色葡萄球菌及其大肠杆菌的抑制研究。将3份的溶液Ⅰ,2份的混合液Ⅱ,以及1份的溶液Ⅲ混合后,制膜。剪下直径为6mm膜,置于培养皿中,进而将含有一定浓度的金黄色葡萄球菌(或大肠杆菌)的培养基倾注于平皿中并摇匀,厚度为1/2平皿深度。置于37℃下培养24h,之后测量抑菌圈大小。以滴加无菌水的滤纸片为空白对照。对金黄色葡萄球菌为8.3mm,对大肠杆菌的抑菌圈为7.6mm。
实施例3:
对三文鱼保鲜实验。将2份的溶液Ⅰ,3份的混合液Ⅱ,以及1份的溶液Ⅲ混合后,制膜。考察其对三文鱼的保鲜效果,结果表明,该膜可以有效延缓三文鱼在冷藏期间pH值、挥发性盐基氮(TVB-N)值以及硫代巴比妥酸(TBARS)值,有效抑制微生物的生长,延缓了三文鱼的腐败变质过程。
实施例4:
对南美白对虾保鲜实验。将3份的溶液Ⅰ,3份的混合液Ⅱ,以及1份的溶液Ⅲ混合后,制膜。考察其对南美白对虾的保鲜效果,结果表明,该膜可以有效延缓虾在冷藏期间pH值、挥发性盐基氮(TVB-N)值以及三甲胺(TMA)值,有效抑制微生物的生长,较空白对照组相比,可以延长虾的保质期2~3天。
以上所述仅为本发明的较佳实施例而已,并不用以限制本发明,凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等,均应包含在本发明的保护范围之内。
Claims (4)
1.一种应用于水产品防腐保鲜的食品包装膜,其特征在于:原料组成为:不同分子量的2~3种壳聚糖,甘油,明胶,海藻酸钠,茶多酚以及槲皮素,溶剂均为一定浓度的食品级竹醋。其特征如下:
(1)(2~3种)壳聚糖(0.1~1.0g)溶解在100mL浓度为(0.1~5%)食品级竹醋液中,而后加入甘油(0.1~1.0g),混合均匀得到溶液Ⅰ;
(2)将明胶(0.05~1.0g)和海藻酸钠(0.05~1.0g)溶解在100mL浓度为(0.1~5%)食品级竹醋液中,超声溶解均匀,得到混合液Ⅱ;
(3)将茶多酚(0.01~0.1g)和槲皮素(0.01~0.2g),用100mL浓度为(0.1~5%)食品级竹醋溶解制成溶液Ⅲ。
2.优选的,将3~4份的溶液Ⅰ,2~3份的混合液Ⅱ,以及1份的溶液Ⅲ搅拌混合均匀,超声除去气泡后,将混合膜液涂布在聚碳酸酯板上,自然干燥成膜。
3.根据权利要求1所述,壳聚糖为高密度水不溶性壳聚糖2种,以及低密度水溶性壳聚糖1种。
4.根据权利要求1所述,溶剂均为食品级竹醋液,其浓度为(0.1~1.5%)。
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Cited By (4)
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CN114128755A (zh) * | 2021-12-08 | 2022-03-04 | 福建农林大学 | 用于平菇的高压静电微电解吸附式涂膜保鲜方法 |
CN115433394A (zh) * | 2021-06-04 | 2022-12-06 | 烟台大学 | 一种即食海参及其制备方法 |
CN116024841A (zh) * | 2022-12-27 | 2023-04-28 | 正隆股份有限公司 | 制备具保鲜涂料的保鲜膜箱的方法 |
CN116268082A (zh) * | 2022-09-09 | 2023-06-23 | 西北农林科技大学 | 基于槲皮素的光驱动可食用的果蔬保鲜涂层材料及其应用 |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
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CN115433394A (zh) * | 2021-06-04 | 2022-12-06 | 烟台大学 | 一种即食海参及其制备方法 |
CN115433394B (zh) * | 2021-06-04 | 2023-11-03 | 烟台大学 | 一种即食海参及其制备方法 |
CN114128755A (zh) * | 2021-12-08 | 2022-03-04 | 福建农林大学 | 用于平菇的高压静电微电解吸附式涂膜保鲜方法 |
CN116268082A (zh) * | 2022-09-09 | 2023-06-23 | 西北农林科技大学 | 基于槲皮素的光驱动可食用的果蔬保鲜涂层材料及其应用 |
CN116024841A (zh) * | 2022-12-27 | 2023-04-28 | 正隆股份有限公司 | 制备具保鲜涂料的保鲜膜箱的方法 |
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