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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
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采用微射流均质技术制备羧甲基纤维素(CMC)—精油纳米乳成膜液,研究微射流均质对成膜液理化特性及可食性膜物理和机械特性的影响,探讨CMC-精油纳米乳成膜液理化特性与膜性能之间的关系。结果表明,微射流均质可显著降低CMC-精油成膜液的平均粒径(P0.05),均质处理后不同精油纳米乳成膜液的ξ-电势值不同,变化范围为-37.63~-59.67mV。与CMC可食性膜相比,CMC-精油纳米乳可食性膜的水蒸气透过性显著降低(P0.05)。CMC-肉桂和CMC-牛至精油纳米乳可食性膜具有较高的透明度。CMC-牛至精油纳米乳可食性膜柔韧性最好。采用微射流均质处理CMC-精油成膜液可使所成膜具有更好的物理和机械特性。 相似文献
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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
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Carmen A. Campos L��a N. Gerschenson Silvia K. Flores 《Food and Bioprocess Technology》2011,4(6):849-875
Over the last years, considerable research has been conducted to develop and apply edible films and coatings made from a variety
of agricultural commodities and/or wastes of food product industrialization. Such biopolymers include polysaccharides, proteins,
and their blends. These materials present the possibility of being carriers of different additives, such as antimicrobial,
antioxidant, nutraceuticals, and flavorings agents. In particular, the use of edibles films and coatings containing antimicrobials
has demonstrated to be a useful tool as a stress factor to protect foodstuff against spoilage flora and to decrease the risk
of pathogen growth. The more commonly antimicrobials used are organic acids, chitosan, nisin, the lactoperoxidase system,
and some plant extracts and their essential oils. For the selection of an antimicrobial, it must be considered the effectiveness
against the target microorganism and also the possible interactions among the antimicrobial, the film-forming biopolymer,
and other food components present. These interactions can modify the antimicrobial activity and the characteristics of the
film being these key factors for the development of antimicrobial films and coatings. The main objective of this article is
to review the bibliography of the last years concerning the main hydrocolloids and antimicrobials used for developing edible
films and coatings, the methods used to evaluate the antimicrobial activity, the applications and the legislation concerning
edible films and coatings. Also, the different strategies related to the modification of structural characteristics and the
future trends in the development are discussed. The information update will help to improve the design, development, and application
of edible films and coatings tending to increase the safety and quality of food products and to prepare for food legislation
changes that might be necessary while identifying future trends concerning a better functionality of edible films thought
as a stress factor for lengthening shelf life of food products. 相似文献
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W-X. Du C.W. Olsen R.J. Avena-Bustillos T.H. McHugh C.E. Levin Mendel Friedman 《Journal of food science》2009,74(7):M372-M378
ABSTRACT: Essential oils (EOs) derived from plants are rich sources of volatile terpenoids and phenolic compounds. Such compounds have the potential to inactivate pathogenic bacteria on contact and in the vapor phase. Edible films made from fruits or vegetables containing EOs can be used commercially to protect food against contamination by pathogenic bacteria. EOs from cinnamon, allspice, and clove bud plants are compatible with the sensory characteristics of apple-based edible films. These films could extend product shelf life and reduce risk of pathogen growth on food surfaces. This study evaluated physical properties (water vapor permeability, color, tensile properties) and antimicrobial activities against Escherichia coli O157:H7, Salmonella enterica, and Listeria monocytogenes of allspice, cinnamon, and clove bud oils in apple puree film-forming solutions formulated into edible films at 0.5% to 3% (w/w) concentrations. Antimicrobial activities were determined by 2 independent methods: overlay of the film on top of the bacteria and vapor phase diffusion of the antimicrobial from the film to the bacteria. The antimicrobial activities against the 3 pathogens were in the following order: cinnamon oil > clove bud oil > allspice oil. The antimicrobial films were more effective against L. monocytogenes than against the S. enterica . The oils reduced the viscosity of the apple solutions and increased elongation and darkened the colors of the films. They did not affect water vapor permeability. The results show that apple-based films with allspice, cinnamon, or clove bud oils were active against 3 foodborne pathogens by both direct contact with the bacteria and indirectly by vapors emanating from the films. 相似文献
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Du WX Olsen CW Avena-Bustillos RJ Friedman M McHugh TH 《Journal of food science》2011,76(2):M149-M155
Fruit and vegetable skins have polyphenolic compounds, terpenes, and phenols with antimicrobial and antioxidant activity. These flavoring plant essential oil components are generally regarded as safe. Edible films made from fruits or vegetables containing apple skin polyphenols have the potential to be used commercially to protect food against contamination by pathogenic bacteria. The main objective of this study was to evaluate physical properties as well as antimicrobial activities against Listeria monocytogenes, Escherichia coli O157:H7, and Salmonella enterica of apple skin polyphenols at 0% to 10% (w/w) concentrations in apple puree film-forming solutions formulated into edible films. Commercial apple skin polyphenol powder had a water activity of 0.44 and high total soluble phenolic compounds and antioxidant capacity (995.3 mg chlorogenic acid/100 g and 14.4 mg Trolox/g, respectively). Antimicrobial activities of edible film containing apple skin polyphenols were determined by the overlay method. Apple edible film with apple skin polyphenols was highly effective against L. monocytogenes. The minimum concentration need to inactive L. monocytogenes was 1.5%. However, apple skin polyphenols did not show any antimicrobial effect against E. coli O157:H7 and S. enterica even at 10% level. The presence of apple skin polyphenols reduced water vapor permeability of films. Apple skin polyphenols increased elongation of films and darkened the color of films. The results of the present study show that apple skin polyphenols can be used to prepare apple-based antimicrobial edible films with good physical properties for food applications by direct contact. 相似文献
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《Food research international (Ottawa, Ont.)》2006,39(5):639-644
The use of edible films to release antimicrobial constituents in food packaging is a form of active packaging. Antimicrobial properties of spice extracts are well known, however their application to edible films is limited. In this study, antimicrobial properties of whey protein isolate (WPI) films containing 1.0–4.0% (wt/vol) ratios of oregano, rosemary and garlic essential oils were tested against Escherichia coli O157:H7 (ATCC 35218), Staphylococcus aureus (ATCC 43300), Salmonella enteritidis (ATCC 13076), Listeria monocytogenes (NCTC 2167) and Lactobacillus plantarum (DSM 20174). Ten millilitres of molten hard agar was inoculated by 200 μl of bacterial cultures (colony count of 1 × 108 CFU/ml) grown overnight in appropriate medium. Circular discs of WPI films containing spice extracts, prepared by casting method, were placed on a bacterial lawn. Zones of inhibition were measured after an incubation period. The film containing oregano essential oil was the most effective against these bacteria at 2% level than those containing garlic and rosemary extracts (P < 0.05). The use of rosemary essential oil incorporated into WPI films did not exhibit any antimicrobial activity whereas inhibitory effect of WPI film containing garlic essential oil was observed only at 3% and 4% level (P < 0.05). The results of this study suggested that the antimicrobial activity of some spice extracts were expressed in a WPI based edible film. 相似文献
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Antibacterial Effects of Allspice, Garlic, and Oregano Essential Oils in Tomato Films Determined by Overlay and Vapor-Phase Methods 总被引:1,自引:0,他引:1
W-X. Du C.W. Olsen R.J. Avena-Bustillos T.H. McHugh C.E. Levin R. Mandrell Mendel Friedman 《Journal of food science》2009,74(7):M390-M397
ABSTRACT: Physical properties as well as antimicrobial activities against Escherichia coli O157:H7, Salmonella enterica , and Listeria monocytogenes of allspice, garlic, and oregano essential oils (EOs) in tomato puree film-forming solutions (TPFFS) formulated into edible films at 0.5% to 3% (w/w) concentrations were investigated in this study. Antimicrobial activities were determined by 2 independent methods: overlay of the film on top of the bacteria and vapor-phase diffusion of the antimicrobial from the film to the bacteria. The results indicate that the antimicrobial activities against the 3 pathogens were in the following order: oregano oil > allspice oil > garlic oil. Listeria monocytogenes was less resistant to EO vapors, while E. coli O157:H7 was more resistant to EOs as determined by both overlay and vapor-phase diffusion tests. The presence of plant EO antimicrobials reduced the viscosity of TPFFS at the higher shear rates, but did not affect water vapor permeability of films. EOs increased elongation and darkened the color of films. The results of the present study show that the 3 plant-derived EOs can be used to prepare tomato-based antimicrobial edible films with good physical properties for food applications by both direct contact and indirectly by vapors emanating from the films. 相似文献
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Guenther S Herzig O Fieseler L Klumpp J Loessner MJ 《International journal of food microbiology》2012,153(1-2):66-72
Antimicrobial agents can be incorporated into edible films to provide microbiological stability, since films can be used as carriers of a variety of additives to extend product shelf life and reduce the risk of microbial growth on food surfaces. Addition of antimicrobial agents to edible films offers advantages such as the use of small antimicrobial concentrations and low diffusion rates. The aim of this study was to evaluate inhibition by vapor contact of Aspergillus niger and Penicillium digitatum by selected concentrations of Mexican oregano (Lippia berlandieri Schauer), cinnamon (Cinnamomum verum) or lemongrass (Cymbopogon citratus) essential oils (EOs) added to amaranth, chitosan, or starch edible films. Essential oils were characterized by gas chromatography-mass spectrometry (GC/MS) analysis. Amaranth, chitosan and starch edible films were formulated with essential oil concentrations of 0.00, 0.25, 0.50, 0.75, 1.00, 2.00, or 4.00%. Antifungal activity was evaluated by determining the mold radial growth on agar media inoculated with A. niger and P. digitatum after exposure to vapors arising from essential oils added to amaranth, chitosan or starch films using the inverted lid technique. The modified Gompertz model adequately described mold growth curves (mean coefficient of determination 0.991 ± 0.05). Chitosan films exhibited better antifungal effectiveness (inhibition of A. niger with 0.25% of Mexican oregano and cinnamon EO; inhibition of P. digitatum with 0.50% EOs) than amaranth films (2.00 and 4.00% of cinnamon and Mexican oregano EO were needed to inhibit the studied molds, respectively). For chitosan and amaranth films a significant increase (p<0.05) of lag phase was observed among film concentrations while a significant decrease (p<0.05) of maximum specific growth was determined. Chitosan edible films incorporating Mexican oregano or cinnamon essential oil could improve the quality of foods by the action of the volatile compounds on surface growth of molds. 相似文献
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Yifei Wang Yawen Xia Pengyu Zhang Lin Ye Lianqiang Wu Shoukui He 《Food and Bioprocess Technology》2017,10(3):503-511
Combinations of essential oils (EOs) can be an effective approach to reinforce their antimicrobial effects. In this sense, incorporation of two EOs into edible films may have supplementary utilizations in food packaging. Chitosan films containing combined EOs of cinnamon and ginger (1:1) at levels of 0.00, 0.05, 0.20, and 1.00% were developed and preliminarily characterized in the current study. The effect of the resulting materials on the antimicrobial and antioxidant properties of pork was then investigated during refrigerated storage (4 °C) over 9 days. Results showed that the presence of EOs markedly increased the thickness and opacity of the chitosan films, but did not modify the film solubility and water vapor permeability. When applied to the preservation of pork slices, these films were effective in retarding total microbial growth, increases in pH as well as lipid oxidation. The highest antioxidant and antimicrobial activities were observed in chitosan films incorporated with 1.00% EOs. These results suggest that chitosan-EO films have potential for application in pork packaging. 相似文献
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Development and evaluation of a novel biodegradable film made from chitosan and cinnamon essential oil with low affinity toward water 总被引:2,自引:0,他引:2
Seyed Mahdi Ojagh Masoud Rezaei Seyed Hadi Razavi Seyed Mohamad Hashem Hosseini 《Food chemistry》2010
Combining antimicrobial agents such as plant essential oils directly into a food packaging is a form of active packaging. In this work chitosan-based films containing cinnamon essential oil (CEO) at level of 0.4%, .0.8%, and 1.5% and 2% (v/v) were prepared to examine their antibacterial, physical and mechanical properties. Scanning electron microscopy was carried out to explain structure–property relationships. Incorporating CEO into chitosan-based films increased antimicrobial activity. CEO decreased moisture content, solubility in water, water vapour permeability and elongation at break of chitosan films. It is postulated that the unique properties of the CEO added films could suggest the cross-linking effect of CEO components within the chitosan matrix. Electron microscopy images confirmed the results obtained in this study. 相似文献