摘要
可食用保鲜膜在果蔬保鲜中应用广泛,具有重要的商业价值。该研究选取明胶与甘油作为薄膜基质负载植物乳植杆菌SCSL-1以制备可食用保鲜膜,测定了所制备可食用保鲜膜上的活菌数,优化了薄膜的机械性能、含水量、溶胀率、水溶性、水蒸气透过率以及透光率等,采用傅里叶变换红外光谱和扫描电镜表征了可食用膜结构,最后评价了其在芒果保鲜中的应用。结果表明,甘油添加量为1.4 g时,明胶薄膜在5℃贮藏14 d活菌数仍保持在107 CFU/g以上;在芒果保鲜贮藏方面,负载植物乳植杆菌SCSL-1可食用保鲜膜能够有效减缓芒果腐败变质的速度,保持其新鲜度,并显著降低细菌生长速率。综上,负载植物乳植杆菌SCSL-1可食用保鲜膜有应用于易腐坏果蔬包装保鲜的巨大价值。
Edible cling film is widely used in fruit and vegetable preservation and has important commercial value.This study detailed the development of an edible film using gelatin and glycerol as a matrix to immobilize Lactiplantibacillus plantarum SCSL-1 for food preservation.The initial step involved quantifying the viable bacterial count in the prepared film.Subsequently,the mechanical properties,moisture content,swelling rate,water solubility,water vapor permeability,and light transmittance of the film were optimized.Structural analysis of the edible film was performed using Fourier transform infrared spectroscopy and scanning electron microscopy.Finally,the efficacy of the film was evaluated through its application in preserving mangoes.The application in mango preservation was also evaluated.The results showed that the viable bacterial count remained above 107 CFU/g in the gelatin film containing 1.4 g glycerol after storage at 5℃for 14 days.The L.plantarum SCSL-1 edible film was able to effectively slow down the rotting and deterioration of mango,to maintain its freshness and to significantly reduce the bacterial growth rate in mango preservation and storage.In conclusion,the L.plantarum SCSL-1 edible cling film shows great potential for the packaging and preservation of perishable fruits and vegetables.
作者
许毓恒
李科
XU Yuheng;LI Ke(Department of Biomedical Engineering,National University of Singapore,KentRidge 119077,Singapore;Wuxi Qingsongquan Biotech.Company,Wuxi 214122,China)
出处
《食品与发酵工业》
北大核心
2026年第6期310-316,共7页
Food and Fermentation Industries
关键词
植物乳植杆菌
抑菌特性
可食用保鲜膜
水果保鲜
Lactiplantibacillus plantarum
antibacterial properties
edible cling film
fruit preservation
