Please use this identifier to cite or link to this item: http://nopr.niscair.res.in/handle/123456789/6789
Title: A high amylose starch isolated from the tubers of <i style="">Curcuma aeruginosa</i>
Authors: Ranjini, C E
Vijayan, K K
Keywords: <i style="">Curcuma aeruginosa</i>
starch
<sup>13</sup>C NMR
<sup>1</sup>H NMR
X- ray diffraction
Issue Date: Dec-2006
Publisher: CSIR
Series/Report no.: Int Cl<sup>8</sup>.A61K
Abstract: NMR spectra of the starch, isolated from <i style="">Curcuma aeruginosa</i> in dimethyl sulphoxide-d<sub>6, </sub>contain groups of minor <sup>13</sup>C, <sup>1</sup>H, or O<sup>1</sup>H signals attributable to glycosyl end groups and the absence of other residues associated with branching in amylopectin molecules. The relative intensities of these signals are evaluated in terms of the incidence of end groups, or branches in the starches. The <img src='/image/spc_char/alpha.gif' border=0> configuration of the glucan has been confirmed by treatment with a amylase, and also by its high [<img src='/image/spc_char/alpha.gif' border=0>]<sub>D</sub><sup>20 </sup>value of +118.9.13. <sup>13</sup>C NMR and <sup>1</sup>H NMR spectral studies show that it is a high amylose starch. X-ray diffraction study reveals B-type polymorphic forms characteristic of high amylose starch. They are also compared with spectrophotometric measurements on the iodine complexing capacity of starches.
Description: 2773-2775
URI: http://hdl.handle.net/123456789/6789
ISSN: 0975-0983(Online); 0376-4699(Print)
Appears in Collections:IJC-B Vol.45B(12) December 2006]

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