Laboratory of Biopolymers, CTAOA. Research Center for Food and Development, CIAD, A.C. Carretera a La Victoria Km. 0.6, Hermosillo, Sonora 83304, Mexico.
Molecules. 2013 Jul 16;18(7):8417-28. doi: 10.3390/molecules18078417.
In the present study water extractable arabinoxylans (WEAX) from a Mexican spring wheat flour (cv. Tacupeto F2001) were isolated, characterized and gelled and the gel rheological properties and microstructure were investigated. These WEAX presented an arabinose to xylose ratio of 0.66, a ferulic acid and diferulic acid content of 0.526 and 0.036 µg/mg WEAX, respectively and a Fourier Transform Infra-Red (FT-IR) spectrum typical of arabinoxylans. The intrinsic viscosity and viscosimetric molecular weight values for WEAX were 3.5 dL/g and 504 kDa, respectively. WEAX solution at 2% (w/v) formed gels induced by a laccase as cross-linking agent. Cured WEAX gels registered storage (G') and loss (G'') modulus values of 31 and 5 Pa, respectively and a diferulic acid content of 0.12 µg/mg WEAX, only traces of triferulic acid were detected. Scanning electron microscopy analysis of the lyophilized WEAX gels showed that this material resembles that of an imperfect honeycomb.
在本研究中，从墨西哥春小麦面粉（cv. Tacupeto F2001）中分离、表征和胶凝了可提取的水阿拉伯木聚糖（WEAX），并研究了其凝胶流变性质和微观结构。这些 WEAX 的阿拉伯糖与木糖的比例为 0.66，阿魏酸和二阿魏酸的含量分别为 0.526 和 0.036 µg/mg WEAX，傅里叶变换红外光谱（FT-IR）图谱典型的阿拉伯木聚糖。WEAX 的特性粘度和粘度分子量值分别为 3.5 dL/g 和 504 kDa。2%（w/v）的 WEAX 溶液在漆酶作为交联剂的作用下形成凝胶。固化后的 WEAX 凝胶的储存模量（G'）和损耗模量（G"）值分别为 31 和 5 Pa，并且 WEAX 中的二阿魏酸含量为 0.12 µg/mg，仅检测到痕量的三阿魏酸。对冻干 WEAX 凝胶的扫描电子显微镜分析表明，该材料类似于不完美的蜂窝状结构。
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