CN1053319C - 荔枝保鲜剂 - Google Patents

荔枝保鲜剂 Download PDF

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CN1053319C
CN1053319C CN95117628A CN95117628A CN1053319C CN 1053319 C CN1053319 C CN 1053319C CN 95117628 A CN95117628 A CN 95117628A CN 95117628 A CN95117628 A CN 95117628A CN 1053319 C CN1053319 C CN 1053319C
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litchis
acid
potassium sorbate
lichee
present
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CN1147899A (zh
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林添波
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Abstract

本发明公开了一种荔枝保鲜剂,是选用有机酸和抗坏血酸为主要原料,添加一定的食盐及山梨酸钾或丙酸钙,并用无机酸调整其pH值在2以下。使用本发明在给定的浸泡时间内处理荔枝,从药液取出后,荔枝在常温通风下能保持5-7天不褐变,且果实无异味,果肉不变色。且由于添加一定的食盐及山梨酸钾或丙酸钙以调节荔枝壳和肉的渗透压及起到防霉防腐作用。大大地延长了荔枝货架期,处理后的荔枝壳上无有害物质。

Description

荔枝保鲜剂
本发明涉及一种果品保鲜剂,尤其涉及一种用于荔枝的保鲜剂。
荔枝采摘后其果壳极易变褐变黑,特别是储藏不当或经一定时间后,荔枝果壳迅速褐变。这一现象大大地影响了荔枝的货架期,荔枝的商品价值很大程度取决于其表壳颜色的新鲜度。
现有的荔枝保鲜技术着重研究怎样延缓其新陈代谢进程,抑制其呼吸强度;同时采用药物抑制其病菌发生,防止霉烂。但是,荔枝一旦脱离这些保鲜环境(条件),置于常温的货架上出售,几个小时后果壳即开始褐变,使其商品价值大大降低。且为了防止荔枝发生病菌,一般均采用农药如乙磷铝、甲基托布津等具有一定毒性的药物浸泡荔枝。综上所述,现有技术的荔枝保鲜技术存在两大缺点:一是,一旦解除保鲜手段荔枝即迅速褐变;二是,保鲜处理过的荔枝壳上仍有农药残毒。
本发明的目的克服现有技术的不足,提供一种可阻断荔枝褐变,经处理的荔枝在同风常温下能保持数天不褐变,且处理后的荔枝壳上无有害物质的荔枝保鲜剂。
本发明的目的是这样实现的:不少研究已表明,果实褐变主要是多酚氧化酶对底物的氧化所造成。进一步研究证明,荔枝褐变时其褐黑色泽出现的主要机理是因酚类物质氧化成醌,并通过自身聚合成含有-RH2或SH化合物而成。
基于此,本发明经过反复研究和实验,在给定的酸性条件下,选择对荔枝的多酚氧化酶的活性有抑制作用的有机酸和抗坏血酸为主要原料,同时添加一定的食盐及山梨酸钾或丙酸钙,以调节荔枝壳和肉的渗透压及起到防霉防腐作用。
本发明的固体药物配方为:有机酸50-70%,维生素C(抗坏血酸)5-10%,食盐20-40%,山梨酸钾0.5-0.8%。
本发明所述的有机酸一般选用柠檬酸或苹果酸。
本发明的药液制备方法:1、在配制好的固体药物加入一定量的水,固体药物与水的重量比为:13∶100-22∶100,捣拌至完全溶化;
2、用无机酸调整其药液的酸度达PH1-2。
本发明荔枝保鲜剂选用有机酸和抗坏血酸为主要原料,并添加一定的食盐及山梨酸钾或丙酸钙。通过理论分析和大量实验证明,一定浓度的柠檬酸和抗坏血酸混合溶液,调整其PH值在2以下时,在给定的浸泡时间内处理荔枝,经处理的荔枝从药液取出后,在常温通风下能保持5-7天不褐变,若置冷藏条件下能保持35天以上,冷藏一段时间后取出置常温通风条件下仍能保持数天不褐变,且果实无异味,果肉不变色。同时,由于添加一定的食盐及山梨酸钾或丙酸钙以调节荔枝壳和肉的渗透压及起到防霉防腐作用。大大地延长了荔枝货架期,且处理后的荔枝壳上无有害物质。
结合实施例对本发明作进一步描述:
实施例1、以处理100公斤鲜荔枝计,配方为:
柠檬酸      0.49公斤
维生素C     0.07公斤
食盐        0.35公斤
山梨酸钾    0.007公斤
将上述药物加入7公斤清水,捣拌至完全溶化;用盐酸调整酸度达PH1.2。即获得荔枝保鲜剂。
分批将鲜荔枝浸入药液中,每批浸泡10-15分钟,取出置通风的常温环境下可保存5天以上;若置2±1℃冷藏条件下储藏,保质期达35天,再将该荔枝取出置常温通风环境下,果壳仍能保持3天以上不褐变。
实施例2,处理100公斤已褐变荔枝,其配方为:
柠檬酸      0.84公斤
维生素C     0.14公斤
食盐        0.56公斤
山梨酸钾    0.014公斤
将上述药物加入7公斤清水,捣拌至完全溶化;用磷酸调整酸度达PH1.2。即获得用于处理荔枝壳已褐变的荔枝保鲜灵。
将褐色荔枝分批浸入该药液中,每批浸20-30分钟(观察果壳由褐色转红为准),取出荔枝置常温通风处,仍能保持数天红色,也可再放入2±1℃冷藏一段时间。
本发明荔枝保鲜剂可根据固体药配方作成固体产品出售。使用时再按照比例加清水溶化药物,并加无机酸调整药液的酸度PH1-2。也可以配制好酸度适宜的药液作为产品出售。

Claims (1)

1.一种荔枝保鲜剂,其特征在于:选用柠檬酸或苹果酸和维生素C为主要原料,固体药物配方以重量百分比计为:柠檬酸或苹果酸50-70%,维生素C5-10%,食盐20-40%,山梨酸钾0.5-0.8%,可在配制好的固体药物加入一定量的水,形成药液,固体药物与水的重量比为13∶100-22∶100,并捣拌至完全溶化;再用无机酸调整药液的酸度达PH1-2。
CN95117628A 1995-10-19 1995-10-19 荔枝保鲜剂 Expired - Fee Related CN1053319C (zh)

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CN1053319C true CN1053319C (zh) 2000-06-14

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Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1073355C (zh) * 1999-02-01 2001-10-24 华南农业大学 荔枝贮运保鲜方法
CN1088562C (zh) * 1999-06-26 2002-08-07 广西大学 荔枝龙眼常温保鲜技术
CN100340174C (zh) * 2004-02-23 2007-10-03 武汉益生泉生物科技开发有限责任公司 一种荔枝抗氧化防褐保鲜方法
CN101433231B (zh) * 2008-12-17 2011-07-20 叶贤忠 高糖份水果的保鲜方法及保鲜用材料
US8338347B2 (en) * 2010-09-09 2012-12-25 Mareya Shawki Ibrahim System for reducing bacteria on unprocessed food surfaces while extending shelf life
CN103081945B (zh) * 2013-02-01 2015-10-07 中山大学 一种除霉防霉剂及相应的除霉防霉方法
CN103734270B (zh) * 2013-12-25 2016-03-02 广西科技大学 一种荔枝保鲜剂及其制备方法
CN103918780B (zh) * 2014-03-27 2015-12-09 陶建壮 一种杨梅保鲜剂
CN104886236A (zh) * 2015-05-07 2015-09-09 魏士威 一种荔枝保鲜剂
CN105011326A (zh) * 2015-08-21 2015-11-04 四川省汇泉罐头食品有限公司 一种混合型保鲜剂
CN105076251A (zh) * 2015-09-11 2015-11-25 江苏振宇环保科技有限公司 一种天然灭霉杀菌剂的制备方法
CN105256080A (zh) * 2015-11-13 2016-01-20 谢镜国 一种提取荔枝果糖的方法
TWI659695B (zh) * 2017-06-27 2019-05-21 財團法人上銀科技教育基金會 Litchi fruit processing device and using method thereof
CN110050830A (zh) * 2019-04-30 2019-07-26 赵尔佳 一种红毛丹保鲜剂及其制备方法
CN112136812B (zh) * 2020-09-14 2022-04-22 华南理工大学 一种植物源果蔬杀菌剂及其应用

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4751091A (en) * 1986-08-15 1988-06-14 University Of Hawaii Preservation of reddish color of lychee pericarp
CN1097934A (zh) * 1993-07-29 1995-02-01 曹愫 荔枝等水果保鲜剂

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4751091A (en) * 1986-08-15 1988-06-14 University Of Hawaii Preservation of reddish color of lychee pericarp
CN1097934A (zh) * 1993-07-29 1995-02-01 曹愫 荔枝等水果保鲜剂

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