Department of Food Science and Technology, Ferdowsi University of Mashhad, P.O. Box: 91775-1163, Mashhad, Iran.
Department of Food Science and Technology, Ferdowsi University of Mashhad, P.O. Box: 91775-1163, Mashhad, Iran.
Carbohydr Polym. 2017 Jan 2;155:68-77. doi: 10.1016/j.carbpol.2016.08.051. Epub 2016 Aug 18.
The effect of different extraction procedures on functional properties of mucilage extracted from Plantago major seed were investigated using response surface methodology. Extraction at 75°C, using 1:60 water:seed ratio at pH 6.8 was the best condition for maximum yield (15.18%), emulsion stability (67.4%), foam stability (88.4%), solubility (97.36%) and water absorption capacity (39.74g/g) of mucilage. At this optimum point, PMSM had, on average 82.85% carbohydrate, 76.79 mgGAE/g total phenol content, 97.8mgg total flavonoid content and 915.54μgml antioxidant activity. The results indicated that PMSM had average molecular weight of 1.2×10Da. FTIR analysis demonstrated the presence of carboxyl, hydroxyl and methyl groups and glycoside bonds. The chain flexibility parameter, activation energy, ζ-potential and droplet size for PMSM were determined as 946.09, 0.78×10J/kgmol, 15.23mV (at neutral pH) and 448.56nm, respectively. Intrinsic viscosity for PMSM in deionized water was 14.24dlg.
采用响应面法研究了不同提取工艺对车前子种胶功能特性的影响。在 75°C、水与种子比为 1:60、pH 值为 6.8 的条件下提取，可获得最大产率（15.18%）、乳化稳定性（67.4%）、泡沫稳定性（88.4%）、溶解度（97.36%）和持水能力（39.74g/g）。在此最佳条件下，车前子种胶的多糖含量平均为 82.85%，总酚含量为 76.79mgGAE/g，总黄酮含量为 97.8mgg，抗氧化活性为 915.54μgml。结果表明，车前子种胶的平均分子量为 1.2×10Da。傅里叶变换红外（FTIR）分析表明，车前子种胶中存在羧基、羟基和甲基以及糖苷键。车前子种胶的链柔性参数、活化能、ζ-电位和液滴粒径分别为 946.09、0.78×10J/kgmol、15.23mV（在中性 pH 值下）和 448.56nm。车前子种胶在去离子水中的特性粘数为 14.24dlg。
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