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Enzymatic hydrolysis of Canna indica, Manihot esculenta and Xanthosoma sagittifolium native starches below the gelatinization temperature†
Article first published online: 19 OCT 2012
Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Starch - Stärke
Volume 65, Issue 1-2, pages 151–161, January 2013
How to Cite
Perez-Rea, D., Rojas, C., Carballo, S., Aguilar, W., Bergenståhl, B. and Nilsson, L. (2013), Enzymatic hydrolysis of Canna indica, Manihot esculenta and Xanthosoma sagittifolium native starches below the gelatinization temperature. Starch/Stärke, 65: 151–161. doi: 10.1002/star.201200103
- Issue published online: 3 JAN 2013
- Article first published online: 19 OCT 2012
- Manuscript Accepted: 4 JUL 2012
- Manuscript Revised: 29 JUN 2012
- Manuscript Received: 9 MAY 2012
- Swedish International Development Agency (Sida/SAREC)
The susceptibility to enzymatic hydrolysis of starch extracted from raw roots of Canna indica, Manihot esculenta and Xanthosoma sagittifolium, grown in Bolivia, were studied below the gelatinization temperature. The granule size and amylose content were as followed: C. indica>M. esculenta>X. sagittifolium. The hydrolysis showed a rapid rate at the initial stage, followed by a progressive decrease thereafter. At 30, 40 and 50°C, during the initial stage, the rate of hydrolysis was observed to be influenced by the size of the granules, being the highest for the small sized granules X. sagittifolium, followed by the medium sized granules M. esculenta and the lowest rate was for the large sized granules C. indica starch. During the slow phase, A-type M. esculenta and B-type C. indica showed higher hydrolysis rates than A-type X. sagittifolium. At 60°C, a positive correlation was found between the amylose content and the rate of hydrolysis among the starches. Microscopic observations showed a pattern of attack by the enzyme towards C. indica starch granules, suggesting that high amylose content is concentrated around the hilum.