CHARACTERIZATION OF GLUCOMANNAN FROM AMORPHOPHALLUS PANOMENSIS IN VIETNAM

Authors

  • An Tien Nguyen Department of Chemistry, Thai Binh University of Medicine and Pharmacy 373-Ly Bon road, Thai Binh city, Vietnam
  • Nguyen Thi Hoa Department of Chemistry, Thai Binh University of Medicine and Pharmacy 373-Ly Bon road, Thai Binh city, Vietnam
  • Do Truong Thien Institute of Chemistry, VAST, 18 - Hoang Quoc Viet road, Hanoi, Vietnam
  • Vu Thi Hue Department of Chemistry, Thai Binh University of Medicine and Pharmacy 373-Ly Bon road, Thai Binh city, Vietnam
  • Vu Thi Minh Thu Department of Chemistry, Thai Binh University of Medicine and Pharmacy 373-Ly Bon road, Thai Binh city, Vietnam
  • Lai Thi Thu Trang Department of Chemistry, Thai Binh University of Medicine and Pharmacy 373-Ly Bon road, Thai Binh city, Vietnam

DOI:

https://doi.org/10.15625/0866-708X/54/2/6384

Keywords:

Amorphophallus, Panomensis, Glucomannan, Konjac

Abstract

A glucomannan has been isolated from the tuber of amorphophallus panomensis by a simple method without using toxic chemicals. The weight content of the glucomannan was about 4% of original amorphophallus tuber. The structure of the glucomannan was investigated by infrared (IR) and nuclear magnetic resonance spectroscopy (NMR). The results showed that the structural component of the glucomannan was consisted of mannose and glucose units with the mannose/glucose ratio was about 1.00/0.13. The degree of crystalation and molecular weight of the glucomannan were also investigated by XRD diffraction and viscosimetry, respectively. The results indicated that the glucomannan was amorphous and molecular weight was Mv = 1.2´106Da.

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Published

2016-04-12

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Section

Articles