Antimicrobial biofilms with microencapsulated citral and sodium caseinate to extend the shelf life of fresh cheese. (December 2022)

• Record Type: Journal Article
• Authors: Yoplac, Ives; Hidalgo, Alyssa; Vargas, Luis
• Is Part Of: Food packaging and shelf life. Volume 34(2022)
• Publication Date: 2022-12
• Subjects: ANOVA Analysis of variance -- SC Sodium caseinate -- Sb Sorbitol -- CM Citral microparticle (Citral microparticles) -- FC Free citral -- MAB Mesophilic aerobic bacteria -- PCA Plate count agar -- PDA Potato dextrose agar -- RH Relative humidity -- LSD least significant differences -- CFU/g colony -forming unit per gran -- PVA permeability to water vapour -- PE polyethylene; Active packaging -- Biodegradable packaging -- Sensory evaluation -- Mesophiles -- Psychrotrophs; Food -- Packaging -- Periodicals; Food -- Preservation -- Periodicals; Food -- Packaging; Periodicals; 664.0905
• DOI: 10.1016/j.fpsl.2022.100932
• Languages: English
• ISSNs: 2214-2894

Abstract

Abstract: This study investigated the effect of antimicrobial biofilms prepared from sodium caseinate (SC) diluted in water (5% w/w), sorbitol (Sb) at 1:0.91 (SC:Sb) ratio and citral microparticles (CM) at 1:0.95 (SC:CM) ratio on fresh cheese. Biofilms with free citral (FC) at 1:0.13 (SC:FC) ratio were also prepared. The physical, sensory and microbiological profiles of fresh cheese packed in biofilms with CM, biofilms with FC and polyethylene bags (control) and stored at 6 °C for up to 14 days were evaluated. At the end of storage, the cheese packed in biofilms with CM showed a lower microbial count by 0.5 log CFU/g, better sensory profile, greater acceptability and constant pH. However, the cheeses packed in biofilms with CM and FC lost humidity, whiteness and weight and showed increased total colour difference. In conclusion, the biofilm with CM extended the shelf life of fresh cheese for up to 14 days under acceptable conditions. Highlights: Active antimicrobial biofilms are alternatives for packaging perishable foods. Microencapsulated citral (MC) improves the antimicrobial action of biofilms. Cheese in biofilms with MC presented a lower microbial count, better physical and sensory profile. Antimicrobial biofilms with microencapsulated citral extend the shelf life of fresh cheese.