کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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605656 | 880354 | 2007 | 9 صفحه PDF | دانلود رایگان |
The structure of a globular gum ghatti fraction (FS) with low surface tension was investigated using methylation–GC–MS, 1D (1H, 13C) and 2D (COSY, TOCSY, HMQC and HMBC) NMR spectra. FS was obtained from the supernatant after sequential ethanol precipitation of aqueous gum ghatti (Gatifolia SD) solutions after 80% (v/v) ethanol. FS is proposed to be a highly branched polysaccharide with small amount of acetyl substitution:Figure optionsDownload as PowerPoint slideR can be represented by the following groups: →2,3-Manp1→, →3,4-Glcp1→, →4-Galp1→, T-α-l-Araf 1→, T-GlcpA1→,T-Galp1→ and T-l-Arap 1→. Galactose has the -β-d configuration, while the arabinose and rhamnose are in α-l form.
R can be represented by the following groups: →2,3-Manp1→, →3,4-Glcp1→, →4-Galp1→, T-α-l-Araf 1→, T-GlcpA1→,T-Galp→ and T-l-Arap 1→. All the galactose are in -β-d form, all the arabinose and rhamnose are in α-l form.Figure optionsDownload as PowerPoint slide
Journal: Food Hydrocolloids - Volume 25, Issue 8, December 2011, Pages 1999–2007