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Issue 12, 2017
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A new heteropolysaccharide from the seed husks of Plantago asiatica L. with its thermal and antioxidant properties

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Abstract

A new heteropolysaccharide (PMH) with a molecular weight of 1.4 × 103 kDa was isolated from the seed husks of Plantago asiatica L. The monosaccharide composition of PMH was determined as glucose, xylose, arabinose, rhamnose, galactose and galacturonic acid with a molar ratio of 1.0 : 1.8 : 2.4 : 3.8 : 4.9 : 8.5. The backbone of PMH consisted of 1,4-β-D-GalpA with the side chains mainly composed of 1,3-α-D-Galp and 1,2-α-D-Galp which were attached to the O-3 of GlapA. The thermal analysis using the Flynn–Wall–Ozawa (FWO) method revealed that PMH had an apparent activation energy (Ea) of 173.1 kJ mol−1. PMH experienced a major decomposition during the heating process at a temperature of 91.1 °C with a dry weight loss of 31.1%. Moreover, PMH exhibited stronger antioxidant ability than commercial psyllium, partially due to its higher content of uronic acid. The results suggested that PMH could be used in functional foods due to its structural, thermal and antioxidant characteristics.

Graphical abstract: A new heteropolysaccharide from the seed husks of Plantago asiatica L. with its thermal and antioxidant properties

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Publication details

The article was received on 31 Jul 2017, accepted on 28 Oct 2017 and first published on 30 Oct 2017


Article type: Paper
DOI: 10.1039/C7FO01171G
Citation: Food Funct., 2017,8, 4611-4618
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    A new heteropolysaccharide from the seed husks of Plantago asiatica L. with its thermal and antioxidant properties

    Y. Niu, N. Li, S. Alaxi, G. Huang, L. Chen and Z. Feng, Food Funct., 2017, 8, 4611
    DOI: 10.1039/C7FO01171G

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