CN1091355C - 天然海洋果蔬涂膜保鲜剂 - Google Patents

天然海洋果蔬涂膜保鲜剂 Download PDF

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CN1091355C
CN1091355C CN98110567A CN98110567A CN1091355C CN 1091355 C CN1091355 C CN 1091355C CN 98110567 A CN98110567 A CN 98110567A CN 98110567 A CN98110567 A CN 98110567A CN 1091355 C CN1091355 C CN 1091355C
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vegetable coating
fruit vegetable
chitosan
fruit
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CN1253732A (zh
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张吉平
郑学勤
张声辉
李兆理
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Biological Technology Co., Ltd. Qingdao Haikang Liberia
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QINGDAO LIZHONG CHITIN CO
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Abstract

本发明涉及天然海洋果蔬涂膜保鲜剂属于食品或食品添加剂领域。其特征是以壳聚糖为原料制备的壳聚糖酰化物作为果蔬涂膜保鲜剂或与其它助剂复配制备果蔬涂膜保鲜剂。壳糖鲜天然、无毒，具有良好的生物相容性，对人体安全；由于其本身具有良好的成膜性、吸水保湿性、抑菌活性、抗氧化活性、酸碱平衡和植物生理调节功能，因而可广泛用于各种水果、蔬菜的贮藏保鲜，其使用方法简便，保鲜效果好，保鲜时间长。

Description

天然海洋果蔬涂膜保鲜剂
本发明属于食品或食品添加剂领域。
水果、蔬菜生长的季节性较强，特别是我国城市化规模的不断扩大和经济的发展，水果、蔬菜的贮藏、运输量日益增加。据调查，我国的水果和蔬菜生产中因储运不当局部积压，每年分别造成20-30％和30-40％的腐烂，这不仅造成资源的浪费，环境的污染，而且直接损害了果农和菜农的利益，严重地制约了经济的发展，因此，在国内外果蔬保鲜的研究极为活跃，其中保鲜剂已成为研究的热点，而天然果蔬涂膜保鲜剂的研究则成为保鲜剂研究和发展的方向，与此同时，果蔬生产、储运市场的发展，对保鲜剂需求和功能要求的提高，也极大限度地把保鲜剂研究推向深入，有力地推动了保鲜剂市场的发展。
目前，在国内常用的果蔬涂膜保鲜剂大体上有两类：一类是以合成有机高分子化合物为成膜物或主剂的保鲜剂，该类保鲜剂因是化学合成品，使用后往往会产生毒性残留；另一类是以天然高分子化合物为成膜剂或主剂的保鲜剂，如虫胶、褐藻胶、阿拉伯树胶、蜂蜡和羧甲基纤维素等，该类保鲜剂的成膜物由于其功能较为单一，如只具有成膜性、保水性或抑制呼吸作用，在保鲜剂配方中往往须加入较大量的防腐、抑菌和抗氧化等化学药剂，影响了此类保鲜剂的天然性。
本发明的目的是制备壳聚糖酰化衍生物-马来酰壳聚糖钠，用作果蔬涂膜保鲜剂或复配制作果蔬涂膜保鲜剂。
本发明的目的是这样实现的：以丁烯二酸类防腐保鲜剂为先导分子模型，以具有优良的成膜性、植物生理调节功能的天然海洋壳聚糖为原料，以马来酸酐为酰化剂，制得马来酰壳聚糖钠。由此而制得的马来酰壳聚糖钠除具备壳聚糖优良的成膜性、植物生理调节功能外，由于马来酰基团的引入，使其具备了丁烯二酸类防腐保鲜剂α，β-不饱和羰基结构，因而其抑菌和抗氧化活性大大提高；由于亲水性羧基的引入，使马来酰壳聚糖具有优良的吸水保湿性能；同时，马来酰壳聚糖又是一种聚两性有机大分子，使马来酰壳聚糖钠成为多功能的高效、天然海洋果蔬涂膜保鲜剂，加以复配后其保鲜效能更为突出。
实施例：
马来酰壳聚糖钠的制备：称取壳聚糖20g，放入装有搅拌器的1000ml三口烧瓶中，加入适量水，称取Na2CO342g和马来酸酐98g并平分成四份，在搅拌下，将二者交替加入，加完后继续反应1小时。停止反应后，将反应物缓慢倒入大量丙酮中，壳聚糖酰化物钠盐沉淀析出，过滤后反复洗涤沉淀至滤液呈中性，将沉淀于60℃真空干燥即得马来酰壳聚糖钠。壳糖鲜的制备：称取马来酰壳聚糖钠20Kg；SE-9(蔗糖酯)5Kg；OA(脂肪酸钠)2Kg；CMC(羧甲基纤维素)5Kg；GAP(阿拉伯树胶)5Kg混合、粉碎，过60目筛，即得天然海洋果蔬涂膜保鲜剂-壳糖鲜。
使用时，1Kg壳糖鲜可加水500-1000Kg，充分搅拌均匀后成为果蔬保鲜液，可涂膜保鲜2万公斤的果蔬。涂膜时，将果蔬浸入保鲜液中30-60秒，捞出，自然风干或风机吹干，装入包装箱即可入库保鲜，库温8-10℃，保鲜6个月以上，好果蔬率在95％以上。

Claims (2)

1、一种果蔬涂膜保鲜剂，其特征在于：马来酰壳聚糖钠用作果蔬涂膜保鲜剂或按马来酰壳聚糖钠20kg，蔗糖酯5kg，脂肪酸钠2kg，羧甲基纤维素5kg，阿拉伯树胶5kg混合制作成果蔬涂膜保鲜剂。
2、按照权利要求1所述的果蔬涂膜保鲜剂，其特征在于：马来酰壳聚糖钠是以天然海洋壳聚糖为原料，以马来酸酐为酰化剂而制备的。
CN98110567A 1998-11-14 1998-11-14 天然海洋果蔬涂膜保鲜剂 Expired - Fee Related CN1091355C (zh)

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CN104430837A (zh) * 2014-12-31 2015-03-25 青海康普生物科技股份有限公司 一种防治枸杞干果吸潮结块、氧化变色的方法
CN108822233A (zh) * 2018-07-05 2018-11-16 陕西科技大学 一种羟丙基壳聚糖衍生物及其制备方法
CN113402631B (zh) * 2021-06-18 2023-02-28 青岛市农业科学研究院 一种碱性种衣剂成膜剂的制备方法及应用

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1060010A (zh) * 1990-09-19 1992-04-08 天津轻工业学院 果蔬涂料保鲜剂及其制取方法
US5633025A (en) * 1994-11-07 1997-05-27 The United States Of America As Represented By The Secretary Of Agriculture Bioactive coating for harvested commodities

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1060010A (zh) * 1990-09-19 1992-04-08 天津轻工业学院 果蔬涂料保鲜剂及其制取方法
US5633025A (en) * 1994-11-07 1997-05-27 The United States Of America As Represented By The Secretary Of Agriculture Bioactive coating for harvested commodities

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