淀粉
化学
位阻效应
食品科学
自愈水凝胶
蜂蜡
傅里叶变换红外光谱
相(物质)
化学工程
高分子化学
立体化学
蜡
有机化学
工程类
作者
J. De Los Santos‐Trinidad,C. Pérez‐Alonso,Francisco Cruz-Sosa,Angélica Román‐Guerrero
摘要
Summary Bigel systems (BG) were formed through the combination of an oleogel (OG) formed with canola oil and beeswax (5% wt.), and a hydrogel (HG) formed with sweet potato (SP) or chayote tuber (CH) starch (10% wt.), using three OG : HG ratios (30:70, 40:60, 50:50). All the BG were self‐standing, exhibiting uniform and well‐defined phase distribution of OG‐in‐HG, and oil‐binding capacities greater than 96%. Droplet size of BG was influenced by the OG : HG ratio; higher amount of OG produced smaller droplet sizes. The characterisation of BG by FTIR and XRD showed structural configuration in BG is driven by physical and steric interactions by displaying distinctive characteristics of each individual phase and dismissing the formation of novel bonds. BG showed a pseudoplastic behaviour and was characterised as a weak gel, G ′ > G ″ at strains below 100% for BG SP and 50% for BG CH , with a shifting process ( G ′ > G ″) at higher strains. Viscoelastic properties were influenced by the OG : HG ratio where BG at 50:50 exhibited lower strength and resistance to deformation. Textural parameters in BG SP were higher than BG CH , and influenced by the OG : HG ratio, indicating that the phase proportion in BG can modulate its structure and performance.
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