摘要
本文旨在研究一种复合膜-光动力技术的保鲜模式应用于南美白对虾,延缓对虾品质劣化。以壳聚糖为成膜基质,分别负载姜黄素、姜黄素/壳聚糖颗粒,制备了姜黄素(PsC)和姜黄素/壳聚糖颗粒(PsG)复合膜,探究了两种复合膜的光敏特性,及其介导光动力杀菌(PsC-L/PsG-L)对南美白对虾的保鲜作用。分别使用PsC膜和PsG膜覆盖南美白对虾,经420 nm LED光源照射10 min后,在4℃贮藏0~4 d。贮藏期间,通过测定南美白对虾菌落总数、挥发性盐基氮、pH、质构、游离氨基酸等理化指标的变化,综合评价复合膜的保鲜作用。结果表明,在4 d的贮藏时间内,PsG-L与PsC-L可以影响南美白对虾菌落总数的生长。PsG-L可抑制南美白对虾TVB-N和pH的上升,延缓质地软化,保鲜效果优于PsC-L。PsG-L处理在2 d的贮藏时间内,保留鲜味氨基酸和降低苦味氨基酸含量的效果优于PsC-L。两种复合膜均具有光敏特性,在420 nm波长的光源驱动下具有光动力抑菌保鲜作用,对南美白对虾具有良好的保鲜效果。本研究成果为光动力非热杀菌技术在水产品保鲜中推广应用提供了支撑。
The purpose of this paper was to study the application of a fresh preservation mode of composite film-photodynamic technology to delay the quality deterioration of Litopenaeus vannamei.Composite films(PsC and PsG)were prepared by loading curcumin and curcumin/chitosan granules,respectively,onto chitosan as the film-forming matrix.For the preservation of Litopenaeus vannamei,the photosensitive characteristics of two composite films and their mediated photodynamic sterilization(PsC-L/PsG-L)were explored.Litopenaeus vannamei was covered by PsC films and PsG films,respectively,and kept them at 4℃for 0~4 days after irradiating them with a 420 nm LED light source for 10 minutes.Throughout the storage period,the preservation impact of the composite films was examined comprehensively by assessing the changes in physicochemical indicators such as total bacterial colony,volatile salt nitrogen,pH,texture,and free amino acids in Litopenaeus vannamei.Results indicated that PsG-L and PsC-L might alter the development of microorganism of Litopenaeus vannamei over a 4 day storage period.PsG-L inhibited the increase of TVB-N and pH in Litopenaeus vannamei,delayed texture softening,and had a greater preservation effect than PsC-L.Over a 2 day storage period,PsG-L treatment was more successful than PsC-L in preserving fresh amino acids and reducing the amount of bitter amino acids.Both composite films exhibit photosensitive qualities and photodynamic inhibition of freshness induced by a light source with a wavelength of 420 nm,and they effectively preserve Litopenaeus vannamei.These findings give support for the promotion and deployment of photodynamic non-thermal sterilizing technology in the preservation of aquatic products.
作者
吴双杰
智锦锦
王德华
任鹏飞
李兆杰
薛长湖
唐庆娟
WU Shuangjie;ZHI Jinjin;WANG Dehua;REN Pengfei;LI Zhaojie;XUE Changhu;TANG Qingjuan(College of Food Science and Engineering,Ocean University of China,Qingdao 266003,China)
出处
《食品工业科技》
CAS
北大核心
2023年第21期367-372,共6页
Science and Technology of Food Industry
基金
国家自然科学基金项目(31871867)。
关键词
光动力
复合膜
姜黄素
壳聚糖
南美白对虾
photodynamic
composite film
curcumin
chitosan
Litopenaeus vannamei
