课程文献中心 更多>>

关键词： 微生物检测技术   食品检验   食品卫生   食品检测   食品安全   有毒有害物质   质量与安全   有效应用  

摘要： 食品安全关乎每个人的身体健康,受到人们的广泛关注。现实生活中,由于微生物所引发的食品安全问题屡见不鲜,所占比例相对较大,直接威胁我们的身体健康与生命安全,因此亟待加强对食品中微生物的检测。微生物检测技术作为食品检测的常用手段,可以直接发现食物中的有毒有害物质,保证食品卫生的整体质量与安全。现阶段,我国的微生物检测技术仍然处于应用的初级阶段,在运用微生物检测过程中存有各种不确定性影响因素,需要加强相关技术的完善与研究。本文针对微生物检测技术在食品检验中的有效应用进行了论述,希望可以为相关部门带来一定的参考价值。

关键词： 食品添加剂   日用化妆品   茶多酚   饲料添加剂   酚类物质   保健品   机体免疫力   降低血脂  

摘要： 茶多酚又称抗氧灵、维多酚、防哈灵等,是从茶叶中提取出来的酚类物质,具有良好的抑菌、消炎、抗肿瘤、抗癌等功能,因其具有较强生物活性,在日用化妆品、饮料、食品添加剂、保健品方面应用广泛,可提高人类机体免疫力、降低血脂和血糖,延缓皮肤衰老,预防心血管类疾病等,提高人类的身心健康。

关键词： Surface-enhanced Raman spectroscopy   Rhodamine B   Basic orange II   Au nanorods   ENHANCED RAMAN-SCATTERING   MASS-SPECTROMETRY   SILVER COLLOIDS   SPECTROSCOPY   NANOPARTICLES   ADSORPTION   SPONGE   DYES   6G  

摘要： In food safety assessment, surface-enhanced Raman spectroscopy (SERS) is a novel detection method with the advantages of being fast, easy, and of high sensitivity. However, many SERS substrate synthesis methods are complex, and there are only a few studies on the simultaneous detection of multiple substances. In this study, a new, simple, low-cost SERS substrate was synthesised for the first time to simultaneously detect illegal food additives rhodamine B and basic orange II in chilli products. A lightweight, porous, and low-cost material of melamine foam (MF) was employed as the SERS synthesis template. The substrate's SERS effect on, and sensitivity to, rhodamine B and basic orange II were demonstrated. The molecular vibration and SERS enhancement mechanisms of the two target molecules were analysed by density functional theory (DFT) calculations. The results reveal that this fabricated substrate has great application potential for the supervision and testing industry.

关键词： Lactic acid bacteria   Homopolysaccharides   Techno-functional properties   Thermal performance   Microstructure   FT-IR spectroscopy   WEISSELLA-CIBARIA JAG8   PHYSICOCHEMICAL PROPERTIES   LEUCONOSTOC-PSEUDOMESENTEROIDES   ANTIOXIDANT PROPERTIES   EXOPOLYSACCHARIDE   DEXTRAN   PURIFICATION   POLYSACCHARIDES  

摘要： Homopolysaccharides (HoPS) produced by lactic acid bacteria (LAB) are highly versatile, biocompatible and safe compounds. In this work, six HoPS from different species of Weisella and Leuconostoc were identified as thermally stable dextrans, with endothermic crystalline deformations between 214 and 239 degrees C. These dextrans proved to have greater solubility and capacities to retain water and oil than similar polymers in other reports. Furthermore, a surface morphology study presented cubic grumps, stratify mesh with irregular grumps, and highly compact filaments. Assays in vitro revealed moderate antioxidant, browning and foaming activities as well as technological properties, such as anti-syneresis, emulsifying and flocculating activities, even at low concentrations. Taking into account bipolymers' microstructure, functionalities and performance in both, aqueous and hydrophobic matrixes, plus their capacity to maintain themselves at elevated temperatures, we consider these HoPS beneficial and natural food additives.

关键词： 食品质量管理   人民生命健康   食品安全   世界经济全球化   安全风险   重要性   原材料  

摘要： 食品安全作为社会问题的焦点一直饱受人民关注,食品安全涉及人民生命健康安全,同时也是社会民生问题。随着世界经济全球化,一个产品从原材料到加工再到销售,历经的每个环节都有可能存在安全风险,这就需要各个部门层层把关,从源头上杜绝食品安全问题。

关键词： 离子色谱法   食品添加剂   检测   应用  

摘要： 食品添加剂种类丰富,涉及到的离子和杂质较多,为保障食品添加剂使用量正确,减少食品安全质量问题,需要通过更精准、更快速、更便利的方法检查,离子色谱法对食品添加剂的检测具有一定优势,笔者结合自身工作经验,首先介绍了离子色谱法原理、组成、影响因素、检测优势和应用范围,然后从无机离子、常用食品添加剂和其他食品添加剂分析离子色谱法在食品添加剂检测中的应用,以期为相关人员提供参考。

关键词： 食品添加剂   零添加食品   问卷调查   科普  

摘要： 为了解公众对食品添加剂、零添加食品的认知情况与购买行为,揭示零添加食品真相,促进食品行业健康发展,采取线上与线下调研、问卷调查、数据分析等手段进行调查研究。通过调查发现,公众对食品添加剂的概念、种类、使用规定以及零添加食品存在诸多认识误区,与此同时公众渴望获取食品添加剂相关知识。