کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7589685 1492093 2016 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Pectic type II arabinogalactans from starfruit (Averrhoa carambola L.)
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Pectic type II arabinogalactans from starfruit (Averrhoa carambola L.)
چکیده انگلیسی
A structural characterization of polysaccharides from edible tropical fruit named starfruit (Averrhoa carambola L.) was carried out. After the purification steps, two homogeneous fractions were obtained. Fraction 50R was composed of rhamnose, arabinose, galactose and uronic acid in 4.3:56.2:37.4:2 M ratio, respectively and fraction 10R was composed of rhamnose, arabinose, galactose and uronic acid in 2.8:65.8:28.5:3 M ratio, respectively. Methylation and NMR spectroscopy analyses showed that these fractions are formed by pectic arabinogalactans, which contain (1 → 3), (1 → 6) and (1 → 3,6)-linked Galp units. The side chains have 3-O-, 5-O- and 3,5-di-O-linked α-Araf and nonreducing end-units of α-Araf, Arap, β-Galp and α-GlcpA. These arabinogalactans were linked to type I rhamnogalacturonans.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Food Chemistry - Volume 199, 15 May 2016, Pages 252-257
نویسندگان
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