Study on ammonia substitution modification and moisture retention properties of yam polysaccharides

doi:10.14088/j.cnki.issn0439-8114.2022.08.023

HUBEI AGRICULTURAL SCIENCES ›› 2022, Vol. 61 ›› Issue (8): 115-119.doi: 10.14088/j.cnki.issn0439-8114.2022.08.023

• Storage & Processing • Previous Articles Next Articles

Study on ammonia substitution modification and moisture retention properties of yam polysaccharides

BAI Jia-feng¹, XIONG Ya-mei², LIU Yuan-shang³, SUN Yi-yan², LIU Shao-hua¹, JIA Xue-wei², XU Chun-ping²

1. Technical Center of China Tobacco Guangxi Industrial Co.,Ltd., Nanning 530001,China;
2. College of Food and Biology Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002,China;
3. China Tobacco Hebei Industrial Co.,Ltd., Shijiazhuang 050000,China

Received:2021-02-07 Online:2022-04-25 Published:2022-05-12

Abstract

Abstract: The yam polysaccharide was extracted by alkaline extraction and then subjected to ammonia substitution modification. The chemical structure and molecular conformations were analyzed by GC-MS analysis,fourier transform infrared spectroscopy, light scattering analysis and nuclear magnetic resonance spectroscopy. And the moisture retention properties of yam polysaccharides, ammonia-substituted yam polysaccharides and propylene glycol were compared. The results showed that yam polysaccharide was a heteropolysaccharide, mainly composed of glucose（86.1%）, mannose（9.3%）, galactose（7.2%）. The chemical chain was mainly composed of→4）-Glcp-（1→、→6）-Glcp-（1→、→6）-Galp-（1→、→3）-Manp-（1→,→2,3）-Manp-（1→ and terminal Glcp-（1→. The yam polysaccharide could be analyzed as α-1, 4-glucan by 1-D NMR. The molecular weight of the yam polysaccharide was 1.747×10⁵ g/mol, which was much larger than the molecular weight of ammonia-substituted yam polysaccharide 1.115×10⁴ g/mol. In addition, after the aminogenization modification, the polydispersion coefficient of the polysaccharide increased and the molecular weight distribution widened. The yam polysaccharide and ammonia-substituted yam polysaccharide had a certain moisturizing effect, and the moisturizing performance of ammonia-substituted yam polysaccharide was better.

Key words: yam polysaccharide, ammonia substitution, moisture retention property, structural analysis

CLC Number:

TS426

BAI Jia-feng, XIONG Ya-mei, LIU Yuan-shang, SUN Yi-yan, LIU Shao-hua, JIA Xue-wei, XU Chun-ping. Study on ammonia substitution modification and moisture retention properties of yam polysaccharides[J]. HUBEI AGRICULTURAL SCIENCES, 2022, 61(8): 115-119.

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Study on ammonia substitution modification and moisture retention properties of yam polysaccharides

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