重复使用的PPSU材料的婴幼儿奶瓶中邻苯二甲酸酯类迁移规律分析

以PPSU材料的婴幼儿奶瓶为研究对象,采用气相色谱-质谱法研究食品包装材料中邻苯二甲酸酯类在纯水、乙酸、乙醇、植物油4种不同模拟物中的迁移规律,研究邻苯二甲酸酯类溶出量与食品接触介质、乙酸质量浓度、乙醇体积分数、浸泡温度以及处理时间等因素的关系。结果表明:纯水基质食品模拟物对邻苯二甲酸酯类的溶解性较小,酸性食品模拟物相比于水模拟物有更强的溶解性,而含醇类食品模拟物和脂肪类食品模拟物对大部分邻苯二甲酸酯类都具有较好的溶解效果;塑化剂的溶出量随着乙酸和乙醇含量的增加而增加;较高的温度对PPSU包装材料中邻苯二甲酸酯类的迁移溶出具有明显影响,并且随着接触时间的延长,PPSU包装材料中的邻苯二甲酸酯类向食品中的迁移的可能性也不断增大。     

食品塑料包装材料中光引发剂向食品中迁移特性和规律的研究

本实验设计了光引发剂ITX在食品模拟物中的迁移实验,并研究了包装材料的材质、食品模拟物种类、温度、时间等可能影响迁移的实验因素。结果表明,温度是影响迁移最大的因素,塑料包装材料的种类对迁移结果影响较小,在以异辛烷为代表的食品模拟物中最易迁移。     

改性聚苯醚吸收法测定高分子食品接触材料高温下全迁移物析出量

建立了改性聚苯醚吸收法测定食品接触材料高温下全迁移物析出量的方法,并对取样方法、提取溶剂、吸附物净化、加热温度、提取周期以及系统稳定性进行讨论。本方法RSD为2.3%-2.6%（n=10）,具有操作简单、快速等特点。能够满足对食品接触材料高温下全迁移物析出量的分析要求。     

聚酯(PET)食品包装材料安全研究进展

聚酯(PET)包装材料在食品领域被广泛应用。本文介绍了PET食品包装材料存在的食品安全问题,总结了目前PET食品包装材料的迁移模型研究和相关检测方法,并对PET食品包装材料中有害物质向食品模拟物迁移的相关实验进行综述。     

某地区生产的非PVC材质食品用塑料容器受PAEs增塑剂污染情况的调查和分析

目的:初步调查浙江省某地区生产的非PVC材质食品用塑料容器受PAEs类增塑剂污染情况。方法:通过深入研究相关文献、国家标准和欧盟法规后,结合研究中PAEs类增塑剂含量及其特定食品模拟物迁移量检出情况,对其污染范围、程度及其安全性进行探索性调查。结果:在20批次的抽检容器中,PAEs类增塑剂DEHP、DBP和DIBP检出率分别为100.0%、35.0%和40.0%,检出量在0.10~57.70 mg/kg;在橄榄油模拟迁移试验中,5个样品中有DEHP检出,其迁移率最高可达15.4%。结论:PAEs类增塑剂在该地区食品用塑料容器的分布较广;通过特定食品模拟物迁移试验发现,在盛装高温油性食品时,PAEs类增塑剂会加速向食品中迁移,迁移量会超过相关标准限量,存在质量风险。     

镀铬钢板表面微观缺陷对其所包装食品的影响

【目的】研究镀铬钢板表面微观缺陷对其所包装食品的影响。【方法】将带有微观缺陷的镀铬钢板浸润在酸性介质和食用啤酒两种液体中,模拟其在食品包装中的实际应用情况。【结果】表明在酸性介质中Fe离子、Cr离子向液体的迁移量随变形量的增加,时间的延长而增加;在啤酒（弱酸性）介质中Cr离子迁移量相对较少,Fe离子迁移量随时间延长而增加。建议加强食品包装用的进口镀铬钢板表面微观缺陷的检验,保障采用铬钢板罐装食品的卫生安全。     

食品接触用纸中饱和烃矿物油迁移模型研究

本文运用固相萃取-气相色谱分析方法检测食品接触用纸中饱和烃矿物油的迁移量,对食品接触用纸中在不同食品模拟物中的迁移行为进行研究。通过研究获得了食品接触用纸中饱和烃矿物油向油脂性食品模拟物中迁移的规律,以Weibull模型为基础初步建立了迁移数学模型,得到了模型的重要参数。建立的模型可以有效评估食品接触用纸的安全性。     

密胺餐具总迁移量和甲醛迁移量研究

通过模拟消费者在日常使用过程中可能用来盛装在密胺餐具中的填充液,来探讨了总迁移量和甲醛迁移量在不同浸泡液,不同浸泡温度,不同浸泡时间下,他们的数值变化。结果表明,密胺餐具在酸性条件下,相对比较不稳定,无论是总迁移量还是甲醛迁移量都出现较高的数值。在冷藏条件或者相对较低的温度下数值都比较小,但是随着温度的增加,总迁移量和甲醛迁移量均有不同程度的增加,且在100℃高温的作用下,甲醛迁移量呈现了飞跃性的增加。随着浸泡时间的延长,总迁移量和甲醛迁移量的数值都呈现出增加的趋势。     

食品接触材料蒸发残渣检测案例研究

食品接触材料指在正常使用条件下与食品发生直接接触,同时本身成分可能转移到食品中的材料,包括餐具、食品包装、厨具以及食品生产过程中的各种辅助性材料。食品接触材料中的各种助剂可能在与食品接触的过程中迁移到食品中,对食品安全造成影响,威胁人们身体健康。本文从食品接触材料迁移量的测试方法出发,结合具体案例,研究检测食品接触材料蒸发残渣。     

密胺餐具产品质量分析

对市场在售的密胺餐具的质量进行了检测,检测项目包括耐干热性、耐污染性、耐低温性、耐湿热性、高锰酸钾消耗量、总迁移量;同时,在4%乙酸条件下,对不同浸泡温度和时间下甲醛和三聚氰胺的迁移规律进行了研究。检验结果表明:目前市场上的密胺餐具主要存在的质量问题是耐污染能力差,在酸性浸泡液中容易析出不挥发杂质;在4%乙酸酸性条件下,密胺餐具中甲醛和三聚氰胺单体迁移量会随着浸泡温度的升高和时间的延长而逐渐增加;在酸性介质中,密胺餐具的安全使用温度为60℃。     

用作漆雾絮凝剂的三聚氰胺甲醛树脂合成研究

三聚氰胺在盐酸的水溶液中与甲醛进行羟甲基化反应,对合成产物进行表征和性能测试,并深入研究了反应物配比、反应时间、反应温度对三聚氰胺甲醛树脂用作漆雾絮凝剂效果的影响及三聚氰胺甲醛树脂溶液的稳定性,找出了用做漆雾絮凝剂最佳的反应条件为n（三聚氰胺）：n（甲醛）：n（盐酸）=1：2：1,反应温度60℃及反应时间3h。     

碳酸饮料包装材料概述

介绍目前市场碳酸饮料三种包装材料玻璃瓶、易拉罐、PET瓶(聚酯瓶)的优缺点,作为碳酸饮料的包装材料,它们都有一定的强度,适应充气带来的压力,并且具有良好的密封性、耐酸性及卫生安全性,但是也都有一定的流通缺陷。选择合适的包装材料,大力发展绿色包装材料,保护生态环境,促进经济可持续发展。     

绿色包装发展的动态

随着时代的进步,出现了一些新的绿色包装发展趋势:研发进展迅猛的天然高分子生物降解塑料,化学合成脂肪族生物降解塑料的快速发展得益于新的高分子设计方法,绿色化学的兴起加速食品绿色包装的发展,轻量化与薄壁化在包装绿色化中所占比重增大,电子商务的快速发展使回收再利用系统建设变得更为迫切,金属包装成为保证食品安全的首选,纸包装的应用领域进一步扩大。     

Consumers' perceptions of food packaging: an exploratory investigation in Potchefstroom,South Africa

Consumers form perceptions of various food products through their comprehension of the visual stimuli on food packaging that attract their attention. These perceptions directly affect their purchasing decision at the point of purchase, which emphasizes the importance of attention‐capturing packaging attributes. However, little research is available regarding consumers' perceptions of food packaging, especially in the South African context. This study aimed to explore a sample of South African consumers' perceptions of food packaging and how these perceptions were formed through the perceptual process. A qualitative, exploratory study was conducted by means of 25 semi‐structured interviews and through the use of ambiguous mock packaging as a projective technique. Participants were questioned regarding their general perceptions of food packaging. The attention‐capturing ability of packaging as well as consumers' interpretation of this packaging after exposure to the mock packaging was also discussed. Findings from the study indicated that participants mainly based their perception of food packaging on its functional (being purposive, recyclable and informative) and physical attributes (being attractive, of high quality and hygienic). This study also indicated that information and visual attributes of packaging are important to gain consumers' attention in‐store. Participants' comprehension of packaging included general associations of specific food products with certain types of packaging, such as associations with quality and shelf life. Negative associations with packaging mostly entailed difficulty to handle the product, poor quality of the product and environmental problems. This study identifies those product attributes that participants regarded as the most important stimuli for forming positive perceptions regarding food packaging. It is important for manufacturers to pay attention to the information on perceptions that was gained in this study, as it might help them to create packaging that better fulfil consumer needs. These findings could also be applied in a larger study of a quantitative nature, which will ultimately result in more positive consumer shopping experiences and consumer satisfaction regarding food packaging.     

新疆食品包装行业的发展现状与问题分析

食品包装是食品商品的重要组成部分,由于与食品直接接触,不安全的食品包装中的有害物质可能迁移至食品中或与食品成分发生化学反应,引发食品安全问题。虽然我国早已建立有关食品包装的卫生标准,但是食品包装安全问题始终未能引起全社会的广泛关注。近几年,随着消费者安全意识的提高和国家监管力度的加强,食品包装被逐步提高到了和食品安全一样的高度。通过走访企业、座谈询问、查阅资料,样品检验分析的方式对新疆地区的部分大型食品企业、食品相关企业及市场销售的食品使用包装进行了调研,了解到了当地市场食品包装质量情况,食品企业使用包装的质量状况,新疆食品包装企业普遍存在的行业安全及发展制约问题,并针对问题提出了建议和意见,为后期行政审批改革背景下的食品相关产品监管体系的完善奠定基础。     

集装袋老化力学性能试验研究及其灰色预测

考虑粮食集装袋不同的使用环境，通过老化试验对集装袋的老化行为进行研究，探讨了自然暴露和不同温度条件对集装袋性能的影响。结果表明，随着老化时间的增加，集装袋基布的抗拉强度、断裂伸长率下降。自然暴露对基材性能的影响最为显著，高温环境下次之，低温环境下最不显著。基布的抗老化性能与气候条件的变化密切相关，随着温度的升高、光照强度增强，基布老化加剧。同时，基于灰色预测理论，对集装袋横向基布自然老化力学性能进行预测，预测结果精度较高。     

The use of smart biosensors during a food safety incident: Consumers' cognitive-behavioural responses and willingness to pay

Intelligent and active packaging could allow consumers to control cognitive reactions linked to the risk of consuming food products contaminated by microbiological pathogens and thus mitigating negative consequences of food safety incidents. However, despite advances in technology, consumers' reactions and willingness to pay for active and intelligent packaging in the absence and presence of food safety incidents remain somewhat unexplored. To fill such a gap this study incorporates protection motivation theory (PMT) within a contingent valuation survey conducted in the UK to explore consumers' behavioural responses to risk communication in the absence and presence of a food safety incident. These responses were moderated by the possibility of buying hypothetical meat products marketed with biosensors informing consumers of the presence of bacteria post-purchase. A singular approach was developed to identify the following four behavioural responses of the PMT's cognitive mediating process: no response, fear, low response and danger control. Results indicate that the theoretical components of PMT play a different role in the absence and presence of food safety incidents. Respondents who receive risk information are willing to pay more than other participants to adopt precautionary behaviour and that purchasing behaviour varied across these four cognitive-behavioural responses. Governmental institutions, the food industry and retailers should consider working together to reassure consumers by investing in technology that may help consumers to mitigate fear during a food safety incident, but also to develop appropriate risk communication strategies that should focus more on the cognitive-behavioural outcomes analysed in this study.     

刺刀管式反应器管束损坏的原因及对策

介绍了高压法三聚氰胺装置的主要设备——三聚氰胺刺刀管式反应器的基本结构与工作原理,分析了刺刀管式反应器管束损坏的原因,并通过一定的技术改造,彻底解决了刺刀管式反应器管束损坏的问题,保证了刺刀管式反应器和三聚氰胺装置长周期稳定运行。     

Consumers’ perception of food packaging in Trinidad,West Indies and its related impact on food choices

The purpose of the study was to investigate consumers’ perception of food packaging and its impact on food choices. The study population comprised 82 people who were ultimately consumers of packaged food products. The sample was drawn from six major supermarkets located in different geographical areas in Trinidad, West Indies. Data collection was carried out by using a questionnaire based on five topics: visual impact or attractiveness of the packaging; type of packaging material; labelling and nutritional information; new products; and fruit preserves. The packaging feature that influenced most of the respondents’ choice of products was information on the label (41.5%); it was followed by quality and type of packaging (24.4%), brand name/popularity (22.0%) and visual impact (12.2%). When asked if they would purchase a product that was most attractively packaged, 85.4% responded in the affirmative. Most respondents (92.7%) believed that packaging material could adversely affect the quality of performance of a food product. Also, 92.7% of respondents agreed that nutrition information should be shown on all food products, although 36.6% admitted that they do not read the label because of its complexity. Influence of gender was not significant (P < 0.05) on consumer perception of food packaging and on food choices. Although the sample was small, the data highlighted the need to educate consumers of packaged foods, so that informed decisions could be taken in respect to food quality, safety and nutrition.