کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1386892 982540 2011 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Neutral sugar profile of cell wall polysaccharides of pitaya (Hylocereus sp.) fruits
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
Neutral sugar profile of cell wall polysaccharides of pitaya (Hylocereus sp.) fruits
چکیده انگلیسی

The composition of cell wall polysaccharides of pitaya (Hylocereus sp.) fruit pulp was studied with the aim of designing proper maceration processes for the fruit processing industry. Therefore, the degree of esterification of pectin was determined through a potentiometric titration and the consistency with a Bostwick consistometer. Moreover, the alcohol insoluble residue (AIR) was extracted and subsequently fractionated into water-, oxalate-, acid- and alkali-soluble pectins, hemicellulose and cellulose. Each fraction was analyzed for its neutral sugar composition by gas chromatography. Additionally, the AIR uronic content was measured by the m-hydroxydiphenyl (MHDP) assay. Pectin fractions in the analyzed fruit pulp were composed mainly of arabinose and galactose, while the hemicellulose fraction consists mainly of glucose, xylose and galactose. Considering the limited uronic acid content (32.3%) in the AIR and the high esterification degree of pectin, the high viscous consistency of this fruit pulp might not be highly attributed to pectin fractions.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Carbohydrate Polymers - Volume 83, Issue 3, 30 January 2011, Pages 1134–1138
نویسندگان
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