کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4514935 1322224 2009 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Optimization of reaction conditions for resistant Canna edulis Ker starch phosphorylation and its structural characterization
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم زراعت و اصلاح نباتات
پیش نمایش صفحه اول مقاله
Optimization of reaction conditions for resistant Canna edulis Ker starch phosphorylation and its structural characterization
چکیده انگلیسی

Response surface methodology was employed to study phosphorous (P) and resistant starch (RS) content of resistant Canna edulis Ker starch phosphate monoester by starch phosphorylation with sodium mono- and dihydrogen orthophosphate. A five-level-four-factor central composite design was used for maximizing the P and RS content. The optimal reaction conditions obtained were NaH2PO4·2H2O to Na2HPO4·12H2O molar ratio of 1:0.44, phosphate sodium to starch weight ratio of 1.76:1, reaction temperature of 131.6 °C and reaction time of 2.43 h. The theoretical P and RS content were attained to about 0.58 and 73.17%, respectively. P and RS content experimentally obtained were 0.55 and 71.93%, in agreement with the predicted values. In addition, the structural characteristic of the purified starch phosphate monoester was investigated by 31P-nuclear magnetic resonance (31P-NMR), fourier transform-infrared spectroscopy (FT-IR), X-ray powder diffraction (XRD) and scanning electron microscopy (SEM).

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Industrial Crops and Products - Volume 30, Issue 1, July 2009, Pages 105–113
نویسندگان
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