明膠-納米粒子復(fù)合膜的制備及其對(duì)水產(chǎn)品的保鮮作用
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中圖分類號(hào)：S983 文獻(xiàn)標(biāo)識(shí)碼：A 文章編號(hào)： 1000-4440（2025）05-1009-12
Abstract：In this study，chitosan nanoparticles （NPs）loaded with DL-3-phenyllacticacid were incorporated intoa gelatin（GE）matrixtofabricate gelatin-nanoparticlecomposite films（GE-NP）.Theefectsof different chitosannanoparticle concentrations（0， 2% ， 4% ， 6% ， 8% ，and 10% ）on the properties of the composite films were investigated. The results showed that，considering mechanical properties，ultraviolet（UV）barrer properties，oxygenbarrier properties，water vaporbarrierproperties，and antimicrobialproperties，the gelatin- 8% nanoparticle composite film （GE-NP ） 8% exhibitedthebestperformance.Low-fieldnuclearmagnetic resonance and variable-field nuclear magnetic resonance analysesrevealed that theinteractions between nanoparticles and gelatin molecules enhanced the crosslinking strength of the GE-NP 8% composite film，reduced the free
volume，and made its structure morecompact.Inthefish preservationexperiment，onday1Oof storage，thered-greenval
ue （ a* ）and yellow-blue value （ b* ）of fish treated with GE-NP were found to be closer to those of fresh fish.On day 10 8%
of storage，compared with fish treated with polyethylene film and gelatin film，the pH value，total volatile basic nitrogen
content （TVB- N ），thiobarbituric acid content（TBA），and total viable count（ TVC ）of fish treated with GE-NP in8%
creased to aleser extent.Meanwhile，the declineintextureparameters such as hardness，elasticity，cohesiveness，and
chewiness of the fish was also less pronounced.In summary，the GE-NP 8% composite film can effectively slow down the
qualitydeteriorationoffishandextenditsshelf life.Theresultsofthisstudycanprovideatheoreticalbasisandtechnical
support for extending the shelf life and maintaining the quality of aquatic products.
Key words：chitosan nanoparticles；gelatin；preservation film；barier properties；antimicrobial properties
近年來，隨著居民生活水平的提升、生活節(jié)奏的加快以及網(wǎng)絡(luò)銷售的推廣，預(yù)制菜行業(yè)得到了快速發(fā)展。（剩余17828字）