RESEARCH ON EFFECTS OF LOW MOLECULAR WEIGHT CHITOSAN MIXED WITH NANO SILVER PARTICLES FILM COATING ONTO CHICKEN EGGS STORAGE

Abstract

The aims of this study are evaluating effects of coating materials, low molecular weight chitosan mixed with nano silver particles to quality and shelf-life time of chicken eggs. Eggs – experiments material was collected within 24 hours after the hens layed. Sizes, colors, shape … etc were collected evenly, without any physicals injury. Eggs was coated by the mixture of chitosan with molecular weight 10 - 20 kDa, range of concentration from 1% to 2% mixed with nano silver particles, sizes of diameter 20 - 50 nm. Experimental samples were storage at room temperature (28 - 30^oC). The qualities of chicken eggs were evaluated by indicators: weight loss, dissolve protein, pH albumin during storage time. Results showed that after 30 days storage, chicken eggs, which were coated by chitosan at concentration 1.5% mixed with silver nano particles 1.5 ppm, have highest quality inwhich indicators: lowest weight loss ratio, highest dissolve protein concentration, and has no change about pH albumin value.