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Table 1 Yield, molecular weight distribution, and sugar composition (mol%) of A. vera polysaccharides

From: FT-IR study of the polysaccharides isolated from the skin juice, gel juice, and flower of Aloe vera tissues affected by fertilizer treatment

  Gel juice polysaccharides Skin juice polysaccharides Flower polysaccharides
GN1 GN2 GA1 GA2 SN1 SA1 SA2 SA3 FN1 FA1 FA2
Yield (%)a 29.2 5.1 17.6 3.7 0.48 0.06 0.02 0.02 2.65 0.59 13.2
Molecular weight distribution (kDa) 230 to 3,340 115 to 207 15 to 110 5 to 13 2 to 59 440-5,575 90 to 290 9 to 52 21 to 108 45 to 125 5 to 30
Molecular weight of each peak (kDa) 690 171 40 9 12 1925 156 31 56 73 21
Sugar compositionb
Rhamnose - - - ND - - ND ND 2.0 ND 11.5
Xylose - - 1.2 ND - 8.1 ND ND 3.1 ND 7.6
Mannose 15.1 13.5 2.0 ND 6.2 21.7 ND ND 22.9 ND 14.3
Glucose 80 81.2 30.1 ND 29.7 27.0 ND ND 40.3 ND 20.1
Galactose 3.2 5.1 36.5 ND 62.8 10.90 ND ND 30 ND 27.8
Glucuronic acidc - - 27.5 ND - 30.2 ND ND - ND 16.1
  1. Yield, molecular weight distribution and sugar composition (mol%) of the polysaccharides from the skin juice, gel juice, and flower of A. vera purified after gel permeation chromatography. Hyphen denotes values that were not detected. ND, not determined. aPercentage weight of crude polysaccharides recovered. bPercentage mol of total carbohydrate content. cPolysaccharide was hydrolyzed in 2 M sulfuric acid at 100 °C for 8 h. Absorbance at 530 nm was measured according to the m-hydroxydiphenyl method, and the amount was calculated as galacturonic acid.