Physicochemical properties and surface activity characterization of water-soluble polysaccharide isolated from Balangu s
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ORIGINAL PAPER
Physicochemical properties and surface activity characterization of water‑soluble polysaccharide isolated from Balangu seed (Lallemantia royleana) gum Maryam Sardarodiyan1 · Akram Arianfar1 · Ali Mohamadi Sani1 · Sara Naji‑Tabasi2 Received: 16 May 2020 / Accepted: 31 July 2020 © Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract The aim of this research was to investigate physicochemical properties and surface activity characterization of Balangu seed polysaccharide and its fractions. Balangu seed (Lallemantia royleana) gum was fractionated according to its fractions molecular weight difference by ethanol. Its fractions were named PER-Balangu (high molecular weight) and SUPER-Balangu (low molecular weight). The results showed the molecular weight value of Balangu, PER-Balangu and SUPER-Balangu were 3120 kDa, 6130 kDa and 2050 kDa, respectively. Moreover, the highest and lowest protein content related to SUPER-Balangu (10.8%) and PER-Balangu (6.03%), respectively. The uronic acid value of Balangu, PER-Balangu and SUPER-Balangu were 15.16%, 9.75% and 20.35%, respectively. The FT-IR spectra showed the principal functional groups included of (OH), (C–H), (−COO−) and (C–O–C). The intrinsic viscosity value of Balangu, PER-Balangu and SUPER-Balangu were 45.11 dL/g, 29.4 dL/g and 36.51 dL/g, respectively. SUPER-Balangu improved the surface activity properties, which was significantly reduced by increasing SUPER-Balangu concentration (p
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