Volume 17, Issue 108 (February 2021)
Abstract
The aim of this study was to investigate the properties of polyethylene antimicrobial film containing niacin and limonene microcapsules in cheese process packaging. In this study microcapsules containing nisin (0.5, 1, 1.5, 2 and 2.5) and limonene (5, 7, 10, 14, 21 and 28 µg / mg) were prepared by gelation method. . After optimization, niacin and limonene microcapsules were used in polyethylene film based film formulation. After packaging cheese cheese in the film containing optimized microcapsules containing concentrations (1, 1.5 and 2 µg / mg nisin and 5, 7 and 10 µg / mg limonene), total microbial populations, mold and Yeast, Staphylococcus coagulase positive, Escherichia coli were examined on the first days of production, 20th, 40th, and 60th storage.
The results were analyzed by two-way ANOVA and Duncan tests at the significant level of 0.05. During 60 days of storage, total microbial indices, mildew and yeast, Staphylococcus coagulas positive and Escherichia coli significantly decreased (p≤0.05).
The results showed that treatment with Nisin containing 2 IU / mg concentration and limonene with concentration of 10 µg / mg resulted in higher quality of processed cheese during storage period and were selected as optimal treatment.
Volume 18, Issue 115 (September 2021)
Abstract
The aim of this study was to investigate the effect of natural antioxidant properties of crocetin and bixin on nanoparticle formulation of cheddar cheese. In this study, chitosan / alginate nanoparticles containing bixin (14, 16 and 18 μg / ml) and crocetin (0.01, 0.03 and 0.05 μg / ml) were prepared by gelation method. After preparation of cheddar cheese and addition of nanoparticles, total microbial population test was evaluated on the 1st day of production, 20th, 40th and 60th storage. The results were analyzed by two-way ANOVA and Duncan tests at the significant level of 0.05. The results showed that the total microbial population increased significantly during storage, but the total microbial population index decreased significantly with increasing levels of Bixin and Crocetin nanoparticles. Evaluation of sensory evaluation results showed a decrease in sensory evaluation scores over 60 days of storage. However, in the treatments with 18 μg / ml Bixin and Crocetin the sensory index changes were less than the other treatments. Finally, the treatment with 16 µg / ml bauxin and 0.05 µg / ml crocetin was selected as the optimal treatment.
