کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8499769 1553646 2018 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Dissolution of calcium hydrogen phosphate in aqueous δ-gluconolactone; long-lasting supersaturation increasing calcium availability
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک دانش تغذیه
پیش نمایش صفحه اول مقاله
Dissolution of calcium hydrogen phosphate in aqueous δ-gluconolactone; long-lasting supersaturation increasing calcium availability
چکیده انگلیسی
Calcium hydrogen phosphate dissolves readily in aqueous δ-gluconolactone/gluconate, forming solutions supersaturated in calcium gluconate by a factor up to seven at 25 °C. The critical gluconate concentration for dissolving calcium hydrogen phosphate to form homogeneous supersaturated solutions was linearly dependent on the concentration of dissolved calcium hydrogen phosphate rather than the δ-gluconolactone/gluconate ratio. Based on ion speciation, the solution was initially found spontaneously supersaturated with calcium gluconate, while the dissolution of calcium was limited by the solubility product of calcium hydrogen phosphate. After equilibration the concentration of dissolved calcium was controlled by the solubility product of calcium gluconate. The lag phase for initiation of precipitation of calcium gluconate from the supersaturated solutions were up to 9 d, and were slightly increased by presence of calcium saccharate. The transient increase in solubility of calcium hydrogen phosphate in the presence of gluconate may be exploited in functional foods, enhancing calcium availability.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Dairy Journal - Volume 84, September 2018, Pages 62-71
نویسندگان
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