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Iron encapsulated microstructured gel beads using an emulsification-gelation technique for an alginate-caseinate matrix.
Food & Function ( IF 5.1 ) Pub Date : 2020-04-01 , DOI: 10.1039/c9fo02184a
Xiaolin Yao 1 , Xiaoxue Yao , Kai Xu , Kao Wu , Fatang Jiang , Katsuyoshi Nishinari , Glyn O Phillips
Affiliation  

Iron-deficiency anemia is an important health problem in global public issues, and development of iron fortifiers in diets is essential for the decrease of iron deficiency. However, there are problems for iron fortification in food because the common bioavailable iron compounds would contribute to iron-promoted lipid oxidation and unpleasant iron odor, presenting an adverse food quality. Ferrous fumarate loaded microstructured gel beads were prepared by an emulsification-gelation method using an alginate-caseinate matrix, and the gel network was formed by crosslinking of Ca2+ or Fe2+. Internal gelated beads showed relatively symmetrical and homogeneous spheres with no adhesion due to the simultaneous release of Fe2+ to initiate gelation in situ. External gelated beads displayed an irregular and adhesive structure, probably because the random contact between Na-ALG and Ca2+ occurred on the droplet surface, and the immediately gelated hardening layer provided a delay for further Ca2+ diffusion. The gel beads exhibited a lag phase in the promotion of lipid oxidation of the emulsion and restrained the iron odor release from ferrous fumarate. Ferrous ion release from microstructured gel beads in the simulated gastric juice was obviously delayed before a more progressive high release in the simulated intestinal juice, beneficial for iron absorption in the duodenum. The iron encapsulated microstructured gel beads might be developed as a promising safe iron fortifier by relieving lipid oxidation and iron odor.

中文翻译:

使用乳化凝胶技术对藻酸盐-酪蛋白酸盐基质进行铁包封的微结构凝胶珠。

缺铁性贫血是全球公共事务中的重要健康问题,饮食中铁强化剂的开发对于减少缺铁至关重要。但是,食品中铁的强化存在问题,因为常见的生物可利用的铁化合物会促进铁促进的脂质氧化和令人不快的铁味,从而带来不良的食品质量。通过使用藻酸盐-酪蛋白酸盐基质的乳化-凝胶化方法制备负载亚铁酸盐的微结构凝胶珠,并且通过交联Ca 2+或Fe 2+形成凝胶网络。内部凝胶化的珠粒显示出相对对称且均匀的球体,由于同时释放Fe2 +以原位引发凝胶化,因此没有粘附。外部胶凝珠显示出不规则的粘性结构,可能是因为Na-ALG与Ca2 +之间的随机接触发生在液滴表面,并且立即凝胶化的硬化层为进一步的Ca2 +扩散提供了延迟。凝胶珠在促进乳液的脂质氧化方面表现出滞后相,并且抑制了从富马酸亚铁释放的铁味。模拟的胃液中的微结构凝胶珠中的亚铁离子释放明显延迟,然后在模拟的肠液中进行更高程度的高释放,这有利于十二指肠中的铁吸收。铁包裹的微结构凝胶珠可以通过减轻脂质氧化和铁臭味而发展成为有前途的安全铁强化剂。凝胶珠在促进乳液的脂质氧化方面表现出滞后相,并且抑制了从富马酸亚铁释放的铁味。模拟的胃液中的微结构凝胶珠中的亚铁离子释放明显延迟,然后在模拟的肠液中进行更高程度的高释放,这有利于十二指肠中的铁吸收。铁包裹的微结构凝胶珠可以通过减轻脂质氧化和铁臭味而发展成为有前途的安全铁强化剂。凝胶珠在促进乳液的脂质氧化方面表现出滞后相,并且抑制了从富马酸亚铁释放的铁味。模拟的胃液中的微结构凝胶珠中的亚铁离子释放明显延迟,然后在模拟的肠液中进行更高程度的高释放,这有利于十二指肠中的铁吸收。铁包裹的微结构凝胶珠可以通过减轻脂质氧化和铁臭味而发展成为有前途的安全铁强化剂。有益于十二指肠中的铁吸收。铁包裹的微结构凝胶珠可以通过减轻脂质氧化和铁臭味而发展成为有前途的安全铁强化剂。有益于十二指肠中的铁吸收。铁包裹的微结构凝胶珠可以通过减轻脂质氧化和铁臭味而发展成为有前途的安全铁强化剂。
更新日期:2020-04-01
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