国外新鲜果蔬的保鲜包装新技术

论述了国外新鲜果蔬的保鲜包装新技术,其涉及到许多高新保鲜包装技术以及国外先进的保鲜包装技术。新鲜果蔬的保鲜包装新技术是多种保鲜包装方法的综合应用。      

新鲜果蔬的保鲜包装新技术

本文论述了新鲜果蔬的保鲜包装新技术,其涉及到许多高新保鲜包装技术以及国外先进保鲜包装技术。新鲜果蔬的保鲜包装新技术是多种保鲜包装方法的综合应用。     

果蔬气调包装的保鲜技术及发展趋势

气调包装(Midified Atmosphere Packaging),简称MAP,可定义为“在能阻止气体进出的材料中调节食品的气体环境的技术”。MAP的一个重要性是贮藏初始调节包装内的气体组分,以达到抑制食品的腐烂和变质,维持易腐烂食品正常货架期内的品质或延长其货架寿命的目的。因此气调包装又被称为主动气调包装(Active Atmosphere Packaging)。     

果蔬MAP保鲜技术研究进展

气调包装(Modified atmosphere packaging),简称MAP,可定义为“在能阻止气体进出的材料中调节食品的气体环境的技术”。MAP的一个重要特征是贮藏初始调节包装内的气体组分,以达到抑制食品的腐烂和变质,维持易腐烂食品正常货架期内的品质或延长其货架寿命的目的。因此气调包装又被称为主动气调包装(Active Atmosphere Packaging)。     

气调包装对混合鲜切果蔬保鲜效果的影响

以包装盒中充入空气为对照组,设置3组不同浓度的气调包装气氛比例,对预处理后的杨桃、砀山梨、黄瓜、小麦草4种混合鲜切果蔬进行包装,于4℃贮藏,通过测定并分析其理化指标,判断混合鲜切果蔬品质。结果表明,5%O₂+5%CO₂+90%N₂处理的混合鲜切果蔬贮藏8d后的感官品质较高,失重率较低,色泽和硬度保持良好,可溶性固形物含量降低较缓,微生物滋长得到抑制。说明气调包装对杨桃、砀山梨、黄瓜、小麦草4种混合鲜切果蔬有良好的保鲜效果,其中5%O₂+5%CO₂+90%N₂气氛比例下的保鲜效果最好。     

新鲜果蔬气调保鲜包装

新鲜果蔬气调保鲜包装（MAP）是由果蔬呼吸作用、塑料膜透气性、大气环境之间的相互作用建立包装内气调。它可以由果蔬呼吸的耗氧来建立,亦可充入所要求混合气体建立。影响果蔬气调保鲜效果的因素是果蔬的品种、塑料膜透气性能和包装内温度、相对湿度和气体成分。呼吸速度测定方法有气流式和封闭式二种。     

果蔬气调保鲜技术及其在冷链物流中的应用研究进展

通过整理国内外果蔬气调保鲜技术在冷链物流中的应用研究,对气调保鲜技术基本原理和国内外果蔬气调保鲜技术在冷链物流中的应用现状进行了阐述归纳,并预判了果蔬气调保鲜技术在冷链物流中的应用趋势。     

The use of packaging techniques to maintain freshness in fresh-cut fruits and vegetables: a review

Browning and other discolourations, softening, surface dehydration, water loss, translucency, off-flavour and off-odour development, as well as microbial spoilage are some of the most frequent causes of quality loss in fresh-cut products. Nowadays, the use of innovative modified atmospheres and edible coatings stands out among other techniques in the struggle for maintaining freshness and safety of fresh-cut fruits and vegetables. A few studies have demonstrated the effectiveness of these techniques when applied to different fresh-cut commodities. However, treatment and storage conditions for fresh-cut fruits are still being largely explored to better keep their fresh-like quality attributes. This review discusses the recent advances in the use of innovative modified atmosphere packaging (MAP) systems to maintain freshness of fresh-cut fruits and vegetables. Furthermore, special attention is devoted to the development of coatings that can be used as a complement or alternative to MAP.     

Innovative processes and technologies for modified atmosphere packaging of fresh and fresh-cut fruits and vegetables

Modified atmosphere packaging (MAP) technology has been commercially viable since the 1970s. Currently, MAP is extensively used worldwide to preserve the quality and extend the shelf-life of whole fresh fruits and vegetables, but is also increasingly used to extend the shelf-life of minimally processed fresh fruit and vegetables. This review discusses new processes and technologies that can be used to improve quality preservation and consumer acceptability of minimally processed produce where high respiration rates and challenging degradation processes operate. New packaging innovations are enabling producers and retailers to further maintain quality for longer. Innovative approaches to extend shelf-life include active MAP with differentially permeable films, films that incorporate antimicrobial properties, edible coatings that confer barriers properties, and the use of non-traditional gases to modify respiration. Intelligent packaging using integrated sensor technologies that can indicate maturity, ripeness, respiration rate and spoilage are also appearing. This review demonstrates that preservation technologies and associated packaging developments that can be combined with modified atmosphere are constantly evolving technology platforms. Adoption of combinations of technology improvements will be critical in responding to commercial trends towards more minimally processed fresh-cut and ready-to-eat fruit and vegetable products, which require specialized packaging solutions.     

鲜切果蔬精准保鲜包装技术的研究进展

鲜切果蔬因具有即食即用、方便营养及新鲜安全等特点受到广大消费者的青睐。但最小加工处理造成的机械损伤不利于鲜切果蔬品质的保持,限制了果蔬加工业的发展。因此,如何有效地保持品质、延长货架期是鲜切果蔬加工过程中需要解决的关键问题。而适当的精准包装可以改善鲜切果蔬周围环境、减少微生物数量,达到延长货架期和维持品质的作用。但不同种类的鲜切果蔬通常因其自身特点需要采用不同的包装技术。该文综述了鲜切果蔬分类及其适用包装技术的研究进展,系统分析了低温贮藏、气调包装、臭氧水处理、真空包装、超高压包装、可食性涂膜、纳米包装及微胶囊包装技术的保鲜原理及其在鲜切果蔬中的应用,旨在为今后鲜切果蔬包装技术的研究提供参考。     

Modified atmosphere packaging of fruits and vegetables

Modified atmospheres (MA), i.e., elevated concentrations of carbon dioxide and reduced levels of oxygen and ethylene, can be useful supplements to provide optimum temperature and relative humidity in maintaining the quality of fresh fruits and vegetables after harvest. MA benefits include reduced respiration, ethylene production, and sensitivity to ethylene; retarded softening and compositional changes; alleviation of certain physiological disorders; and reduced decay. Subjecting fresh produce to too low an oxygen concentration and/or to too high a carbon dioxide level can result in MA stress, which is manifested by accelerated deterioration. Packaging fresh produce in polymeric films can result in a commodity-generated MA. Atmosphere modification within such packages depends on film permeability, commodity respiration rate and gas diffusion characteristics, and initial free volume and atmospheric composition within the package. Temperature, relative humidity, and air movement around the package can influence the permeability of the film. Temperature also affects the metabolic activity of the commodity and consequently the rate of attaining the desired MA. All these factors must be considered in developing a mathematical model for selecting the most suitable film for each commodity.     

鲜切果蔬抗菌物质与抗菌包装应用研究进展

针对鲜切果蔬易出现腐败微生物和食源性致病菌生长繁殖的问题,文章综述了鲜切果蔬抗菌包装应用研究进展,分析了果蔬中存在的腐败微生物和致病菌,介绍了3大类用于鲜切果蔬包装中的抗菌物质(有机抗菌剂、无机抗菌剂和天然抗菌剂),并详细总结了3种抗菌包装的形式(抗菌涂层包装、抗菌薄膜包装和抗菌小袋包装)及其释放机制。鲜切果蔬抗菌包装与其他保鲜手段联用,将产生巨大的应用价值,抗菌包装也将朝着更加绿色、安全的方向发展。     

应用于鲜切果蔬中的保鲜技术研究进展

鲜切果蔬因其方便、健康、新鲜等特点日益受到人们的青睐,销售量逐年增加。鲜切果蔬又称为切割果蔬、半加工果蔬、调理果蔬等,通常是指改变了蔬菜、水果物理形状、但仍然保持其新鲜状态的果蔬制品或果蔬混合产品。其生产过程一般要经过清洗、分级、修整、切分、洗涤、干燥、包装、贮存、配送等工序,可供消费者直接食用或餐饮业使用。鲜切果蔬保鲜技术对果蔬的色泽、气味、质地、营养成分、组织状态等感官方面得以最大的保留,减少果蔬因经过清洗、去皮、等机械处理过程导致的品质改变。本论文主要对现阶段鲜切果蔬的保鲜技术研究进展进行综述,其主要技术包括物理、化学和综合保鲜技术,以期为今后更深入的研究与探索提供参考与借鉴,并对未来发展方向进行了展望。     

Organics unpacked: The influence of packaging on the choice for organic fruits and vegetables

In many supermarkets throughout Europe, it has become common practice in the fruit and vegetable department to offer options in plastic packaging. Recent trends, however, move towards the removal of packaging. The current study examines whether offering fruit and vegetables without primary packaging increases the likelihood that consumers choose these products. This is especially relevant for organic fruit and vegetables, given that plastic may be perceived as contrary to the sustainable nature of these products. A first experiment, using a student sample and an immersive 3D virtual supermarket environment, shows that choice for organic fruit and vegetables indeed increases when organics are offered without packaging. A second experiment with the virtual supermarket generalizes these findings to a sample of supermarket patrons, additionally showing that unpacked fruit and vegetables are preferred over packed options overall, both for organic and non-organic products. We conclude that removing the primary packaging of organic fruit and vegetables appears to be a promising intervention in attempts to increase organic sales.     

板栗保鲜包装研究

1 概述 板栗是人们较为爱吃的干果,这是因为板栗具有丰富的食疗价值.板栗肉似蛋黄、味道鲜美、香甜可口.板栗含有蛋白质、脂肪、糖、淀粉、各种矿物质和多种维生素等成份,它是一种食疗俱佳的保健食品.祖国医学上认为"栗为肾之果”,具有补肾固精、健脾止泻等功用.但板栗的贮藏却很困难.现将有板栗保鲜包装的技术研究情况加以简单介绍.     

果蔬运输振动损伤及其减振包装设计

水果和蔬菜容易在运输的过程中承受静载、振动、挤压和冲击而造成损伤和品质下降。振动是引起果蔬运输损伤的主要原因。将缓冲材料应用于果蔬包装,可以减轻果蔬采后运输过程的振动,大大降低损耗。本文综述了国内外果蔬采后减振的研究进展,主要论述了振动损伤、缓冲材料的类型及减振作用、模拟振动实验和减振包装设计。      

果蔬运输振动损伤及其减振包装设计

水果和蔬菜容易在运输的过程中承受静载、振动、挤压和冲击而造成损伤和品质下降.振动是引起果蔬运输损伤的主要原因.将缓冲材料应用于果蔬包装,可以减轻果蔬采后运输过程的振动,大大降低损耗.本文综述了国内外果蔬采后减振的研究进展,主要论述了振动损伤、缓冲材料的类型及减振作用、模拟振动实验和减振包装设计.