Effects of chitosan and collagen containing alpha-tocopherol on the oxidative stability in bulk oil and oil-in-water emulsion
2018
Gim, S.Y., Sungkyunkwan University, Suwon, Republic of Korea | Jung, J., Sungkyunkwan University, Suwon, Republic of Korea | Kwon, Y.J., Sungkyunkwan University, Suwon, Republic of Korea | Kim, M.J., Kangwon National University, Samcheok, Republic of Korea | Kim, G.H., Sungkyunkwan University, Suwon, Republic of Korea | Lee, J.H., Sungkyunkwan University, Suwon, Republic of Korea
To provide efficient antioxidant capacities, proper carriers are needed to protect antioxidants against oxidative stress. Collagen mesh structure or chitosan gel was loaded with a-tocopherol and their effects were evaluated in bulk corn oil or oil-in-water (O/W) emulsion at 60℃. Added collagen and chitosan enhanced oxidative stability in corn oil and O/W emulsions at 60℃ compared to corn oils without carriers or with addition of α-tocopherol (p less than 0.05). Stability of α-tocopherol in corn oil loaded in collagen or chitosan was significantly enhanced compared to that in oils without carriers (p less than 0.05). In O/W emulsions, a-tocopherol loaded collagen showed higher antioxidant properties than α-tocopherol loaded chitosan (p less than 0.05). Collagen mesh structure and chitosan gel retarded the rates of lipid oxidation efficiently in both food matrices when α-tocopherol was not loaded. Collagen mesh structure and chitosan gel can be useful carriers for α-tocopherol in bulk oil or O/W emulsion.
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