Formulation and characterisation of O/W emulsions stabilised with modified seaweed polysaccharides
Formulation and characterisation of O/W emulsions stabilised with modified seaweed polysaccharides
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DOI：
10.1111/ijfs.14264
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发表时间：
2019-07-10
影响因子：
3.3
通讯作者：
Nakajima, Mitsutoshi
中科院分区：
文献类型：
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作者：
Melanie, Hakiki;Taarji, Noarnane;Nakajima, Mitsutoshi
在本研究中，用十二碳烯基琥珀酸酐（DSA）对海藻多糖（海藻酸盐和角叉菜胶）进行改性，并评估了它们在水包油（O/W）乳液体系中的稳定性能。物理化学特性由液滴尺寸、界面张力和zeta电位确定，并通过傅里叶变换红外光谱（FTIR）进行结构验证。 CRG-DSA和ALG-DSA在O/W乳液体系中的应用随着浓度的增加表现出更小的液滴尺寸，并且在储存过程中比天然乳液更稳定。由于改性反应产生了额外的羧基，DSA 改性海藻多糖的 zeta 电位比其天然形式具有更多的负电荷。此外，DSA修饰的海藻多糖将大豆油-水界面的界面张力分别从23.1和23.9 mN m(-1)降低至14.2和13.6 mN m(-1)。 FTIR分析证实修饰反应成功。本研究表明DSA改性海藻多糖可作为食品、制药和其他工业领域的潜在乳化剂。
In this study, seaweed polysaccharides (alginate and carrageenan) were modified with dodecenylsuccinic anhydride (DSA), and their stabilising properties in oil-in-water (O/W) emulsion system were evaluated. The physicochemical characteristics were determined by droplet size, interfacial tension and zeta-potential and structurally verified by Fourier transform infrared spectroscopy (FTIR). Both CRG-DSA and ALG-DSA applied in O/W emulsion system exhibited smaller droplet sizes over the increasing concentration and were more stable during storage than native ones. The zeta-potential of DSA-modified seaweed polysaccharides has more negative charge compared with their native forms, owing to the additional carboxyl groups from modification reaction. In addition, DSA-modified seaweed polysaccharides decreased the interfacial tension at soybean oil-water interface from 23.1 and 23.9 mN m(-1) to 14.2 and 13.6 mN m(-1), respectively. The successful modification reaction was confirmed by FTIR analysis. This study demonstrated that DSA-modified seaweed polysaccharides may serve as prospective emulsifiers in food, pharmaceutical and other industrial fields.