共查询到19条相似文献,搜索用时 231 毫秒
1.
植物源食品防腐剂抑菌机理和效果及在食品保鲜中的应用 总被引:2,自引:0,他引:2
植物源天然食品防腐剂因其安全性高、抗菌性强以及来源广泛等优点,已成为食品防腐保鲜研究的热点。系统地介绍了几类天然植物源防腐剂种类、抑菌效果、抑茵机理及在食品贮藏保鲜中的应用。植物源防腐剂主要包括蛋白类、肽类、多糖类、黄酮类、多酚类、萜类、精油及植物自身成分的酶解产物等。目前从植物中提取有效成分作为天然防腐剂已经取得了一定的成果,但仍存在一定的问题,如防腐剂成分的鉴定、量效关系、不同防腐物质间协同增效作用效果及机理、风险分析等方面的问题。提出了天然食品防腐剂研究、开发及应用方面的建议。 相似文献
2.
食物是一个复杂且营养丰富的体系,会给微生物生长提供一个优越的环境,因而易使食品感染微生物而导致腐败变质。将植物天然提取物用于食物保鲜已成为近年来食品保鲜业界的研究热点,植物精油作为一种无毒、无害、纯天然的提取物,具有很好的抗氧化和抑菌防腐的特性,其在食品保鲜领域的应用前景十分巨大。但植物精油存在着极易挥发、水溶性差,对光、热、温度敏感等特性,使其在食品保鲜中的应用受到限制。本文综述了提高植物精油稳定性的四种方法微胶囊、微乳液、纳米乳和脂质体及其在果蔬、谷物类、肉类等食品保鲜中的应用,为植物精油的进一步开发研究及应用提供参考。 相似文献
3.
植物精油在可食性抗菌膜中的应用 总被引:2,自引:0,他引:2
本文简要介绍了可食性抗菌膜的种类和抑菌机理,综述了近年来国内外植物精油的提取技术、化学成分、抑菌机理、植物精油对可食性抗菌膜性能的影响及其在食品保鲜上的应用的研究进展,并分析了植物精油应用在可食性抗菌膜上可能存在的问题,对其未来发展前景进行了展望。 相似文献
4.
5.
植物精油作为天然来源的抑菌物质,在食品保鲜领域的应用越来越广泛。该文介绍其作为抗菌剂添加至聚合物基质中制备包装抗菌膜的研究现状,总结精油在膜材料中的构建方式、对膜物理性能、机械性能、抗菌性能的影响以及在食品保藏中的应用。指出植物精油抗菌膜材料存在的问题以及未来的研究重点和发展趋势,为精油抗菌膜的进一步发展提供思路。 相似文献
6.
肉中含有丰富的营养物质且水分活度高,在运输贮藏及销售过程中极易被氧化和腐败变质。因此,肉品保鲜成为食品工业的一大挑战。植物精油作为天然的食品防腐保鲜剂,具有良好的抑菌、抗氧化功效,在肉品保鲜领域具有一定的潜力。但因其水溶性和稳定性较差,限制了在肉品保鲜领域的广泛应用。本文综述了植物精油的抗菌和抗氧化能力及作为肉品保鲜剂所面临的问题、纳米包埋植物精油的方法及对食源性微生物的作用机制。本文通过对纳米包埋植物精油的开发和应用进行展望,为探究新型肉品保鲜剂提供参考。 相似文献
7.
8.
植物精油属于GRAS物质,具有较高的安全性,将其应用到食品的防腐保鲜中可以减少化学合成抗菌剂对人体产生的不良影响。精油的蒸气形式可以在不与食品直接接触的情况下对多种细菌、霉菌和酵母产生抑制作用,其主要抑菌成分为单萜烯和醛类,通过疏水性作用于细胞达到抗菌效果。植物精油蒸气与食品包装相结合,可以降低精油对于食品感官的影响并为食品提供抑菌保护。空气负离子能提高精油蒸气对微生物细胞的破坏作用,高浓度的空气负离子还能抑制微生物的活性,将精油与空气负离子结合使用,可以把对食品品质的影响降到最低,并提供更好的抑菌效果。 相似文献
9.
10.
11.
芳香精油在食品保藏中的应用性研究进展 总被引:20,自引:0,他引:20
芳香精油是重要的植物次生代谢物,药食应用历史悠久,因其多方面的生物活性,已引起人们对其在食品保藏领域替代化学防腐剂的极大兴趣。文中概述了芳香精油及其成分在采后果蔬、预切果蔬片、肉制品、乳制品和水产品等食品保鲜和贮藏领域中应用性和安全性研究的最新研究进展。许多研究表明,牛至、丁香、罗勒、胡荽、肉桂、百里香、薄荷、迷迭香、芥茉、芫荽、红根草等芳香精油以及丁子香酚、香芹酚、肉桂酸、己醛、草蒿脑、麝香草酚、香芹酮、肉桂醛、柠檬醛、香叶醇等单体成分具有优良的抗食源性腐败菌和致病菌活性。通过与食品生产前处理工艺、气调包装、配方优化等手段的结合,一些芳香精油及其成分显示出天然食品保藏剂良好的商用价值。 相似文献
12.
13.
浆果类水果肉质多汁、营养丰富,但采后易于病原微生物生长,从而引起腐败变质,故对浆果中的病原微生物进行抑菌研究是浆果保鲜的关键。植物精油是天然植物体内重要的次生代谢产物,具有广泛的抑菌性能。该文归纳了天然植物精油的来源及主要活性成分,在总结近几年天然植物精油对病原微生物抑菌机制的基础之上,综述了不同精油保鲜方式对浆果类水果进行抑菌保鲜的应用研究进展,并对植物精油应用于浆果保鲜的安全性进行评价。以期为寻求能够替代传统保鲜剂的天然生物资源提供新途径。 相似文献
14.
Yi Xin Seow Chia Rou Yeo Hui Ling Chung Hyun-Gyun Yuk 《Critical reviews in food science and nutrition》2014,54(5):625-644
Essential oils derived from plants have been recognized for decades to exhibit biological activities, including antioxidant, anticancer, and antimicrobial attributes. Antimicrobial activities of these natural plant materials have been intensively explored in recent years, mainly in response to the overwhelming concern of consumers over the safety of synthetic food additives. Gram-negative organisms are believed to be slightly less sensitive to essential oils than Gram-positive bacteria. Generally, a higher concentration is required to obtain the same efficacy in foods than in synthetic media. The combinations of different types of essential oils or with other food additives have been found to potentially exhibit synergistic if not additive effects. This suggests a cost-efficient and wholesome alternative to both food industry and consumers, at the same time adhering to the hurdle technology in inhibiting proliferation of foodborne pathogens. This review aims to examine the conventional methods commonly used for assessment of antimicrobial activities of essential oils and phytochemicals, the use of these substances as antimicrobials in food products, factors that affect their efficacy, synergism between components or with available food preservatives as well as the challenges and future directions of using essential oils and phytochemicals as natural food preservatives. 相似文献
15.
16.
Marya Aziz 《Critical reviews in food science and nutrition》2018,58(3):486-511
Synthetic preservatives are widely used by the food industry to control the growth of spoilage and pathogenic microorganisms and to inhibit the process of lipid oxidation extending the shelf-life, quality and safety of food products. However, consumer's preference for natural food additives and concern regarding the safety of synthetic preservatives prompted the food industry to look for natural alternatives. Natural antimicrobials, including plant extracts and their essential oils, enzymes, peptides, bacteriocins, bacteriophages, and fermented ingredients have all been shown to have the potential for use as alternatives to chemical antimicrobials. Some spices, herbs and other plant extracts were also reported to be strong antioxidants. The antimicrobial/antioxidant activities of some plant extracts and/or their essential oils are mainly due to the presence of some major bioactive compounds, including phenolic acids, terpenes, aldehydes, and flavonoids. The proposed mechanisms of action of these natural preservatives are reported. An overview of the research done on the direct incorporation of natural preservatives agents into meat and poultry products as well as fruit and vegetables to extend their shelf-life is presented. The development of edible packaging materials containing natural preservatives is growing and their applications in selected food products are also presented in this review. 相似文献
17.
Pradeep Kumar Dipendra Kumar Mahato Akansha Gupta Shikha Pandhi Sadhna Mishra Sreejani Barua Vidhi Tyagi Arvind Kumar Manoj Kumar Madhu Kamle 《International Journal of Food Science & Technology》2022,57(4):2171-2184
Mycotoxin-producing fungi are a significant source of crop and food contamination, posing a significant threat to global food safety and security. Essential oils, plant extracts and phytochemicals have emerged as green preservatives to extend the shelf-life of foods due to their unique antimicrobial properties. Unlike conventional synthetic preservatives, they are a sustainable and safe way to preserve food with no or little harmful effects on the environment. Use of nanoformulations containing essential oils and phytochemicals offer enormous potential as a mitigation strategy to lower mycotoxin contamination incidences in food and crop with enhanced release behaviour to efficiently transport them to the target location for a rapid reaction without much impact from environmental variables. Hence, this review overviews various essential oils and phytochemicals utilized through nanoformulations to control the mycotoxigenic fungi, probable mechanism of actions involved as well as emerging mycotoxins and associated safety concerns to ensure food sustainability. 相似文献
18.
A. Varvaresou S. Papageorgiou † E. Tsirivas E. Protopapa H. Kintziou V. Kefala C. Demetzos‡ 《International journal of cosmetic science》2009,31(3):163-175
Preservatives are added to products for two reasons: first, to prevent microbial spoilage and therefore to prolong the shelf life of the product; second, to protect the consumer from a potential infection. Although chemical preservatives prevent microbial growth, their safety is questioned by a growing segment of consumers. Therefore, there is a considerable interest in the development of preservative-free or self-preserving cosmetics. In these formulations traditional/chemical preservatives have been replaced by other cosmetic ingredients with antimicrobial properties that are not legislated as preservatives according to the Annex VI of the Commission Directive 76/768/EEC and the amending directives (2003/15/EC, 2007/17/EC and 2007/22/EC). 'Hurdle Technology', a technology that has been used for the control of product safety in the food industry since 1970s, has also been applied for the production of self-preserving cosmetics. 'Hurdle Technology' is a term used to describe the intelligent combination of different preservation factors or hurdles to deteriorate the growth of microorganisms. Adherence to current good manufacturing practice, appropriate packaging, careful choice of the form of the emulsion, low water activity and low or high pH values are significant variables for the control of microbial growth in cosmetic formulations. This paper describes the application of the basic principles of 'Hurdle Technology' in the production of self-preserving cosmetics. Multifunctional antimicrobial ingredients and plant-derived essential oils and extracts that are used as alternative or natural preservatives and are not listed in Annex VI of the Cosmetic Directive are also reported. 相似文献
19.
Jian Ju Yahui Guo Yuliang Cheng He Qian Weirong Yao 《Critical reviews in food science and nutrition》2019,59(20):3281-3292
AbstractIn recent years, with the continuous improvement of people's living standard, the importance of healthy lifestyles is becoming more and more recognized. Therefore, food safety has attracted much attention. This has prompted people to study new technologies that can guarantee food safety without the use of preservatives. Compared with other types of food preservatives, essential oils (EOs) are gotten more attention, because they meet the current development trend of food additives about "green", "safety" and "health". Therefore, this paper focuses on the research of effective contribution of EOs to inhibit the growth of foodborne pathogens, systematically summarized the commonly used EOs and their main extraction methods and chemical components and, the antibacterial mechanism of EOs on food borne pathogens, systematically analysis the specific application case of EOs in food discussed. Hoping to provide some reference and help to the relevant researchers. 相似文献