کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10801090 | 1054728 | 2005 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Non-covalent interaction between procyanidins and apple cell wall material. Part II: Quantification and impact of cell wall drying
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
بیوشیمی، ژنتیک و زیست شناسی مولکولی
زیست شیمی
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![عکس صفحه اول مقاله: Non-covalent interaction between procyanidins and apple cell wall material. Part II: Quantification and impact of cell wall drying Non-covalent interaction between procyanidins and apple cell wall material. Part II: Quantification and impact of cell wall drying](/preview/png/10801090.png)
چکیده انگلیسی
The adsorption of condensed tannins (procyanidins) on solid cell wall material was quantified using the Langmuir isotherms formulation. Six tannins fractions differing by their size (number average degree of polymerisation between 2.5 and 65) and composition (presence of galloyl groups from to 0 to 22%, proportions of (+)-catechin to (â)-epicatechin from traces to one CAT for three EPI) were used. Two cell walls differing only by their physical characteristics were obtained by mild or harsh drying, with surface areas of 2.15 and 0.52 m2/g, respectively. The total amounts of procyanidins retained on the cell wall materials increased with their concentrations while the proportions of retained decreased, and a plateau was reached at high concentrations. The apparent affinity of procyanidins for CWM isolated from apples increased with their molecular weight. Decrease of the CWM porosity by harsh drying slightly decreased the apparent affinity and increased the apparent saturation levels when constants were expressed relative to cell wall weight, but strongly increased both apparent affinity and apparent saturation levels per surface units.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biochimica et Biophysica Acta (BBA) - General Subjects - Volume 1725, Issue 1, 30 August 2005, Pages 1-9
Journal: Biochimica et Biophysica Acta (BBA) - General Subjects - Volume 1725, Issue 1, 30 August 2005, Pages 1-9
نویسندگان
C. Le Bourvellec, C.M.G.C. Renard,