The invention relates to a moisture-absorbing humectant with antioxidant activity, and a preparation method and application of the moisture-absorbing humectant
The invention relates to the industries of food, cosmetics and biomedicine, in particular to a moisture absorption and preservation agent with antioxidant activity, and a preparation method and application of the moisture absorption and preservation agent. The hygroscopic humectant with antioxidant activity is represented by formula (1), wherein n represents degree of polymerization, and the average value range is 50-1000. The preparation method comprises the following two steps of : (1) dissolving chitosan in dilute hydrochloric acid, and carrying out amino protonation on the chitosan to obtain a protonated chitosan derivative. (2) grafting sodium pyrrolidone carboxylate in chitosan molecule based on ion exchange mode to obtain the moisture-absorbing humectant with antioxidant activity. The method has the advantages of simple reaction process, easiness in operation, high yield, low production cost and higher industrialized application foundation. Experiments prove that the moisture absorption humectant with antioxidant activity not only has good water solubility and certain antioxidant activity, but also has excellent moisture absorption and retention performances, and can be widely applied to the fields of foods, cosmetics and biomedicines.
; 陈源; 宓英其
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