Nghiên cứu bảo quản hỗn hợp caroten-protein bằng chitosan phân tử lượng thấp và chitosan chloride

Abstract

     Low molecular weight chitosan (LMWC) and chitosan chloride (LMWC-HCl) was added caroten-protein (C-P) mixture with an amount of 50 - 200 ppm and kept at room temperature for 24 weeks. The results showed that both LMWC and LMWC-HCl could reduce the degradation of C-P at a loading of 100 ppm in compared to the control samples. The degraded contents of protein, astaxanthin, protein soluble and lipid was 5 – 10%, the TVB-N content was 15 – 20%, while those of blank samples were 25 - 35% and 200 - 220%, respectively. However, the storage efficiency of LMWC and LMWC-HCl at room temperature was showed at 100 ppm for 10 weeks. The result suggests that LMWC and LMWC-HCl show potential applications for storage of the C-P mixture.

Keywords: Low molecular weight chitosan, chitosan chloride, caroten-protein mixture, seafood by-products