Soluble dietary fibers from Trigonella foenum graecum Linn. seed and their structures

Authors

  • Nilufar Nahar Department of Chemistry, University of Dhaka, Dhaka-1000
  • AKM Ahsan Habib Department of Chemistry, University of Dhaka, Dhaka-1000

DOI:

https://doi.org/10.3329/jbas.v38i1.20201

Keywords:

Dietary fiber, Trigonella foenum graecum, Galactomannan, Rhamnogalacturonan

Abstract

Soluble dietary fibers of Trigonella foenum graecum Linn. seed were isolated and fractionatedinto neutral and acidic parts. Structures of both the fractions were determined by sugar analysis andhigh resolution 2D NMR spectroscopic studies including total correlation (TOCSY) spectroscopy.Main chain of the neutral SDF fraction was found to be a galactomannan composed of mannoseand galactose (~1 : 1.5 ratio) having 1,3-? linkages between each other. Terminal mannose residuewas linked to galactose residue of the main chain at its 4 position by ?-linkage. The acidic SDF wasa rhamnogalacturonan, in the main chain, galacturonic acids and rhamnose had 1,4-?- and 1,2-?-linkeages, respectively. Terminal ?-galactose and ?-glucuronic acid were linked to ?-galacturonicacid of the main chain at its 3-position

DOI: http://dx.doi.org/10.3329/jbas.v38i1.20201

Journal of Bangladesh Academy of Sciences, Vol. 38, No. 1, 19-26, 2014

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Published

2014-08-27

How to Cite

Nahar, N., & Habib, A. A. (2014). Soluble dietary fibers from Trigonella foenum graecum Linn. seed and their structures. Journal of Bangladesh Academy of Sciences, 38(1), 19–26. https://doi.org/10.3329/jbas.v38i1.20201

Issue

Vol. 38 No. 1 (2014)

Section

Articles