换气包装技术与技术要求

换气包装与真空包装相比具有适应性广范、商品不受压等优点。本文介绍了换气包装的实质、技术要求以及常用的置换气体及其作用。换气包装技术的应用将使我国的产品包装进入一个新时代。     

活性包装材

活性包装中所使用的相关技术方法称为活性包装技术。活性包装技术是在现代材料和生物科学技术成果的影响下,于近年来发展起来的一种新型包装技术,它是通过调节包装材料与包装体内部的气体及食品之间的相互作用,有效地延长食品的货架寿命和新鲜食品的新鲜品质,最大限度地保持食品的质量和营养价值的一种包装技术。     

园艺产品的换气包装

换气包装(MAP)是一种廉价的包装系统,它对某些容易干枯的出口产品在采取海运出口时,可以延长产品的储藏期。虽然这一包装技术已经应用多年,但在应用中,仍有许多地方值得进一步研究开发和完善。     

浆果保鲜包装新形式及其保鲜机理的研究

在系统分析影响新鲜浆果保鲜效果的因素基础上,指出目前常用的新鲜浆果包装技术存在的缺点和问题,提出了具有保护性结构设计的保鲜瓦楞纸箱包装和微孔塑料盒抗压包装,一定程度上解决了浆果包装中温度、湿度、气体组分和防损伤防虫害的问题.     

国际制冷科技研究通报

一、澳大利亚肉类研究室: 1.肉类的冷却。 2.经予冷的羊分割肉的贮存期。 3.涉及到脂肪硬度的肉类冷却。 4.牛肉的自动去骨、冷却与包装。 5.延长冷却包装后的羊胴体的贮存期。 6.采用换气包装来延长牛、羊肉零售时的贮存期。 7.零售冷却分割肉的集中包装。二、美国国家海产鱼类研究所。这个研究室正在进行的鱼加工技术研究中包括以下制冷题目:保证鲜海产品和冷冻海产品品质的先进技术应用研究。     

真空包装成为食品行业主流包装模式

采用真空包装机进行包装一方面可以保食物新鲜，另一方面可确保产品卫生，防止污染，是一种广泛使用的包装技术。     

从田野到零售——神奇的包装方案

近日,一家新西兰企业向我们介绍了一种最新的包装技术。该技术主要为水果、蔬菜、肉类、鱼类、托盘装运的粉末等提供相应的包装方案。需要拥有一系列专利包装设计:包括恒温监控（用于冷藏肉类及海鲜品的运输）DEFOR＆＃8482,包装系统（最佳开放式瓦楞箱包装,用于新鲜水果及蔬菜的包装和运输）。他们装这些技术授权给客户,进行令客户满意的生产、运作及项目管理。     

能辨别食品新鲜程度的包装新技术

人们通常认为．有包装的食品只要是在保质期内．就应该是安全新鲜的．但实际上有时并非如此。为了保证食品安全，使消费者不误食变质食品，科学家研究出一些能指示食品是否变质．以及能延长食品保鲜期的包装新技术，这些技术统称为“活性包装技术”或“智能包装技术”。     

能辨别食品新鲜程度的包装新技术

人们通常认为,有包装的食品只要是在保质期内,就应该是安全新鲜的,但实际上有时并非如此.为了保证食品安全,使消费者不误食变质食品,科学家研究出一些能指示食品是否变质,以及能延长食品保鲜期的包装新技术,这些技术统称为"活性包装技术"或"智能包装技术".     

气调包装技术到何时才能发挥全部潜力

对许多食品来说,气调包装技术可以延长其货架寿命,但为什么至今仍有许多食品加工者不采用这一技术? 似乎还是不久以前,许多人对于气调包装技术(MAP/CAP)可以延长预制食品的货架寿命曾作出过承诺。 但是,现在气调包装技术在包装新鲜食品的道路上是否出了什么问题?你当地的商店货架上塞满的包装食品不是采取气调包装技术而是采取冷冻或罐装的方式,为什么?     

我国零售鲜肉的包装现状及发展趋势

对我国零售鲜肉包装现状进行了分析和研究,指出目前鲜肉包装存在的问题和不足,并根据鲜肉的特点及气调包装在鲜肉保鲜中的应用得出结论,气调包装鲜肉将是我国零售鲜肉市场的发展趋势.     

气调包装技术在食用菌中的研究进展

目的 概述气调包装技术(MAP)在食用菌中的应用和研究现状,开拓气调包装技术的研究思路,为其发展方向提供参考。方法 从气调包装结合不同保鲜技术及使用不同包装材料的气调包装技术在食用菌中的应用这2个方面介绍其研究进展,探讨食用菌在采后贮藏过程中的生理及其他品质的变化。结论 各种气调包装技术均对食用菌的保鲜具有一定的积极作用。对各种包装技术进行了概括和总结,并对食用菌保鲜技术的发展方向进行了展望。     

Effect of hinokitiol impregnated sheets on shelf life and quality of “KEK‐1” tomatoes during storage

Hinokitiol (β‐thujaplicin, volatile oil extracted from the wood of Hiba arborvitae [Thujopsis dolabrata var. hondae], cypress family) is a natural preservative, antimicrobial, and chelating agent, used to prevent decay and extend the shelf life of fruits and vegetables. In the present study, we used nonwoven rayon sheets impregnated with hinokitiol to conduct packaging studies. Mature green tomatoes var. “KEK‐1” were packaged under three packaging conditions, ie, modified atmosphere packaging (MAP), MAP + hinokitiol (MH), and perforated film package (as control), and their quality attributes were compared during storage. The packaging materials used were low‐density polyethylene (LDPE) film (40 μm) and fresh sheets of nonwoven rayon impregnated with hinokitiol. O₂ in the MAP packaged tomatoes were retained throughout the storage period (3% to 5% O₂). Results showed that MH had slightly improved quality attributes throughout the storage period when compared with MAP alone. Expression levels of LeACS, LeADH, and LeTBG4 genes were higher in 5 and 9 days of control when compared with MAP and MH. “KEK‐1” tomatoes had longer shelf life under MAP and MH packaging and maintained the quality at 15°C. Hence, the effect of the MAP with bioactive packaging treatments could be effective in the future application for the extension of shelf life and quality of fruits and vegetables.     

自然气调包装对采后苹果蒸腾作用的影响

基于自然气调包装技术设计了一种包装箱,通过对比实验,研究了自然气调包装对采后苹果蒸腾作用的影响规律,建立了自然气调包装苹果的蒸腾作用模型和参数。实验结果和数值分析表明,采用瓦楞纸箱和聚酯镀铝薄膜的自然气调包装技术,可使得采后苹果的蒸腾速率逐渐减小,最后趋于平衡,而且当自然气调包装内环境的相对湿度大于90%时,采后苹果的蒸腾作用可得到较大程度的抑制。     

Evaluation of Antimicrobial Active Packaging to Increase Shelf Life of Gluten‐Free Sliced Bread

This paper presents a complete study and comparison of the efficiency of three types of packaging system: active packaging, modified atmosphere packaging (MAP) and combinations of both. To choose the best option, we must take into account microbiological results as well as sensory quality; therefore, a complete sensory study and an in‐depth statistical study were carried out, in order to evaluate each option and their interactions. The results showed that active packaging considerably increases the shelf life of packaged food, so it could be an attractive option to extend the shelf life. The active packaging provided better sensorial properties than the MAP option. Positive factors like characteristic flavour and spongy texture had higher values in the absence of MAP, and negative properties like cinnamon flavour, crumbly texture and hardness reached higher values when MAP was present in the packaged food. So when microbiological and sensorial properties are taken into account, the active packaging is a better option than MAP to increase shelf life because it inhibits microbial growth while maintaining the high quality of sensorial properties for gluten‐free breads. Copyright © 2011 John Wiley & Sons, Ltd.     

气调包装的效果以及影响因素分析

随着气调包装的使用日渐广泛,针对不同的内容物填充合适的气体,使其发挥最佳的效果,是如今气调包装生产和应用的重中之重。在气调包装的应用中,填充气体尤其是CO2,其抑菌选择性和浓度,以及包装材料的选择都会对气调包装的效果产生影响,需要包装生产企业和使用方多加重视。     

菠菜微孔膜气调保鲜包装的试验研究

微孔膜气调包装技术是一种有效控制与调节包装内部气氛的方法.采用微孔膜气调保鲜技术包装菠菜,测量菠菜在贮藏过程中包装盒内的O2含量、外观、失重率、色差及叶绿素含量的变化,探讨微孔膜气调包装保鲜技术对贮藏菠菜的保鲜效果,并以无微孔密封包装为对照.结果发现,微孔膜气调包装能更好的维持菠菜的形态与品质.     

Combined effects of hot water treatment (HWT) and modified atmosphere packaging (MAP) on quality of tomatoes

Effects of hot water treatment (HWT) and modified atmosphere packaging (MAP) on quality of tomatoes were studied. Prior to packaging with low‐density polyethylene (LDPE) film (0.02 mm in thickness), tomatoes were immersed in hot water (42.5°C) for 30 min. Control tomatoes were not treated and were stored for 2 weeks at 10°C and then for 3 days at 20°C without packaging. Steady states of O₂ and CO₂ concentrations inside the package were about 5 and 8%, respectively, and were reached after 6 and 4 days of storage, respectively. MAP reduced weight loss of tomatoes to about 41% of that of unpackaged fruit during a 2‐week storage period. The use of a combination of HWT and MAP reduced weight loss and decay, inhibited color development and maintained firmness of tomatoes but had no effect on soluble solids content or titratable acidity. HWT slightly reduced mold growth of tomatoes stored in MAP. Packaging of control fruit in MAP resulted in stimulation of mold growth around the stem end of the fruit after about 1 week of storage and also resulted in cracking and decay. HWT could be used as disinfectant for tomatoes prior to storage in MAP in order to reduce microbial growth, cracking and decay that may be caused by excessive water vapor inside the package. Copyright © 2003 John Wiley & Sons, Ltd.     

食品类信息型智能包装的应用研究

目的研究信息型智能包装技术成果在食品包装领域的运用。方法综述了信息型智能包装的主要技术类型、特点以及在食品包装产业链中的应用进展,分析气调包装技术和智能标签等主要技术类型在食品类包装中的应用,比对传统包装优缺点,获得整合创新的新思路。结论对于推进食品包装的信息化、智能化和人性化,促进信息型智能包装技术在我国食品生产、流通和消费全过程中的普及和有效应用,维护食品安全,减少食品浪费,提升食品安全监管水平,实现食品类包装及产品的价值增值均具有重要的现实意义。     

Prediction of plastic film thickness based on gas permeability and validation with ‘Kyoho’ table grapes for optimal modified atmosphere packaging

Modified atmosphere packaging (MAP) storage has become a useful technique for extending the shelf life of fruit and vegetables. However, the success of MAP depends on many factors, including types of fresh products, storage conditions, and the characteristics of the packaging films. To achieve the optimal gas composition in the package headspace and improve the postharvest quality of fresh produce, the packaging film with appropriate barrier properties needs to be selected. This study aimed to predict the film thickness by applying produce respiration rate and package film permeability data measured in given product weight and storage conditions. An available film (eg, 25‐μm‐thick low‐density polyethylene) was used to pack fresh produce, and the respiration rate of fresh produce and in‐package O₂ and CO₂ concentrations at steady state were measured. Permeability of the film was calculated based on mass balance, and the thickness of the film could be predicted if the recommended target O₂ and CO₂ concentration was obtained from the literature. To validate the predicted thickness value, an experiment was conducted by packaging fresh table grapes in bags of the predicted thickness. The effect of packaging with different film thicknesses on the quality of the fruit was determined. The results showed good agreement between the predicted and the experimental in‐bag O₂ and CO₂ concentrations, and the MAP with predicted thickness (90 μm) film was more effective in maintaining postharvest quality of grapes during low‐temperature storage than the thinner films (30 and 60 μm) and the control.