APA-style human milk fat analogue from silkworm pupae oil: Enzymatic production and improving storage stability using alkyl caffeates

文献类型： 外文期刊

第一作者： Liu, Xi

作者： Liu, Xi;Wang, Xudong;Pang, Na;Zhu, Weijie;Zhao, Xingyu;Wang, Fangqin;Wu, Fuan;Wang, Jun;Wu, Fuan;Wang, Jun

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期刊名称：SCIENTIFIC REPORTS （ 影响因子：4.379； 五年影响因子：5.133 ）

ISSN： 2045-2322

年卷期： 2015 年 5 卷

页码：

收录情况： SCI

摘要： Silkworm pupae oil derived from reeling waste is a rich source of a-linolenic acid (ALA), which has multipal applications. ALAs were added in sn-1, 3 positions in a triacylglycerol (TAG) to produce an APA-human milk fat analogues (APA-HMFAs, A: alpha-linolenic acid, P: palmitic acid). The optimum condition is that tripalmitin to free fatty acids of 1: 12 (mole ratio) at 65 degrees C for 48 h using lipase Lipozyme RM IM. Results show that, the major TAG species that comprised APA-HMFAs were rich in ALA and palmitic acid, which contained 64.52% total unsaturated fatty acids (UFAs) and 97.05% PA at the sn-2 position. The melting point of APA was -27.5 degrees C which is much lower than tripalmitin (40.5 degrees C) indicating more plastic character. In addition, the practical application of alkyl caffeates as liposoluble antioxidants in APA was developed. Alkyl caffeate showed a superior IC50 (1.25-1.66 mu g/mL) compared to butyl hydroxy anisd (1.67 mu g/mL) and L-ascorbic acid-6-palmitate (L-AP) (1.87 mu g/mL) in DPPH analysis. The addition of ethyl caffeate to oil achieved a higher UFAs content (73.58%) at high temperatures. Overall, APA was obtained from silkworm pupae oil successfully, and the addition of caffeates extended storage ranges for APA-HMFAs.

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