OBTAINING LOW-MOLECULAR WEIGHT GALACTOMANNANES AND STUDYING THEIR PHYSICO-CHEMICAL CHARACTERISTICS

نویسندگان

چکیده

The aim of this study was studying the effect acidic hydrolysis conditions on molecular parameters galactomannan, such as weight average degree polymerization (DPw), (Mw), product yield, depolymerization reaction rate, and mannose/galactose (Man/Gal) ratio in presence hydrochloric acid obtaining low oligogalactomannans soluble water. A preparing possibility galactomannans by guar galactomannan (DPw=1160, Mw=563.8 kDa, Man/Gal=1.89) studied. studies were carried out solutions with various concentrations (0.05–1.0 mol/L) for different times (10–240 min) at a constant temperature (80 °C). In course studies, effects obtained analyzed. conducted reactions yielded (DPw=6–1021, Mw=2.6–505.1 Man/Gal=1.90–3.19) yields (2.8–97.1%). Based results obtained, optimal (HCl 0.1 mol/L, 240 min, 80 °C) supposed preparation oligosaccharides. structural products indicated that reduced galactose residues could be prepared method.

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ژورنال

عنوان ژورنال: Himiâ rastitel?nogo syr?â

سال: 2022

ISSN: ['1029-5143', '1029-5151']

DOI: https://doi.org/10.14258/jcprm.2022029551