Formation and Characterization of Casein Phosphopeptide/Chitosan Oligosaccharide NanoComplex

The objectives of this study were to manufacture casein phosphopeptide (CPP)/chitosan oligosaccharide (CSO) nanocomplexes and to investigate the impacts of manufacturing variables, such as CPP concentration and pH, on their morphological and physicochemical characteristics. Transmission electron microscopy (TEM) and particle size analysis were used to assess the morphological and physicochemical properties of the CPP/CSO nano-complexes, respectively. Based on the images obtained by TEM, the spherical shapes of the CPP/CSO nanocomplexes ranged from 50 to 150 nm. As the concentration of CPP was increased and the pH was decreased, the average particle size of the nanocomplexes significantly (p<0.05) increased. The CPP/CSO nanocomplexes had a highly uniform distribution with a polydispersity index value of less than 0.3. In addition, they had a negative surface charge with a zeta-potential value between -17 and -26 mV. The CPP/CSO nanocomplexes showed good stability during the freeze-drying process. In conclusion, CPP/CSO nanocomplexes were successfully manufactured, and the CPP concentration and pH were found to be key factors that affected their morphological and physicochemical properties.

케이신 포스포펩티드/키토올리고당 나노 복합체 형성과 특성 연구

본 연구에서는 CPP와 CSO를 사용하여 약 187~282 nm 크기의 균일한 구형의 나노 복합체를 성공적으로 제조하였다. 나노 복합체는 제조 공정 요인인 CPP 농도와 pH 조절을 통해 입자 크기, 다분산 지수, 그리고 표면 전하와 같은 나노 복합체의 물리화학적 특성을 조절할 수 있음을 확인하였다. 또한 CPP/CSO 나노 복합체의 분말화 공정을 통해 분말화 된 나노 복합체의 식품 적용성을 증진시킬 수 있음을 알 수 있었으며, food-grade 물질인 CPP와 CSO를 사용하여 제조한 나노 복합체는 향후 잠재적인 칼슘 전달체로써 식품 산업에 이용될 수 있을 것으로 기대된다.