Department of Food Science and Technology, Ferdowsi University of Mashhad (FUM), P.O. Box 91775-1163, Mashhad, Iran.
J Sci Food Agric. 2011 Apr;91(6):1083-8. doi: 10.1002/jsfa.4287. Epub 2011 Feb 9.
Lallemantia royleana (Balangu) is a mucilaginous endemic plant which is grown in different regions of world. The flow behaviour of Balangu seed extract (BSE) and its mixture with xanthan, guar and locust bean gums at 1:3, 1:1 and 3:1 ratios, in addition to control samples (0% BSE), were evaluated. To describe the rheological properties of samples, the power law model was fitted on apparent viscosity-shear rate data. To evaluate the interaction between BSE and selected hydrocolloids in dilute solutions, the relative viscosity was also investigated.
There was no significant difference between the consistency coefficient of guar and locust bean solutions and their blends substituted with 250 g kg(-1) BSE. The BSE-xanthan mixture at 1:3 and 1:1 ratios had consistency index equal to xanthan solution. BSE-locust bean gum at all ratios, BSE-xanthan at 1:3 ratio and BSE-guar gum at 1:1 and 3:1 ratios indicated relative viscosity lower than values calculated assuming no interaction. The intrinsic viscosity value of BSE was determined 3.50 dL g(-1) .
The apparent viscosities of BSE, selected hydrocolloids and their blends were the same at a shear rate of 293 s(-1) and the commercial gums can be substituted by 250 g kg(-1) and 500 g kg(-1) BSE.
拉拉曼蒂亚·罗耶莱纳（Lallemantia royleana）（巴兰古）是一种黏液性的特有植物，生长在世界不同地区。评估了巴兰古种子提取物（BSE）及其与黄原胶、瓜尔胶和刺槐豆胶以 1:3、1:1 和 3:1 比例混合的流动行为，以及对照样品（0%BSE）。为了描述样品的流变特性，用幂律模型对表观粘度-剪切速率数据进行拟合。为了评估 BSE 与选定的稀溶液中的水胶体之间的相互作用，还研究了相对粘度。
瓜尔胶和刺槐豆胶溶液及其用 250 g kg（-1）BSE 替代的混合物的稠度系数之间没有显著差异。BSE-黄原胶在 1:3 和 1:1 比例下的稠度指数与黄原胶溶液相等。在所有比例下的 BSE-刺槐豆胶、BSE-黄原胶在 1:3 比例下和 BSE-瓜尔胶在 1:1 和 3:1 比例下的相对粘度均低于假设没有相互作用时计算的值。BSE 的特性粘度值为 3.50 dL g（-1）。
在剪切速率为 293 s（-1）时，BSE、选定的水胶体及其混合物的表观粘度相同，商业胶可以用 250 g kg（-1）和 500 g kg（-1）BSE 替代。
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