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Physicochemical Characterization and Application of Yam (Dioscorea cayenensis-rotundata) Starch as a Pharmaceutical Excipient by María-Fernanda Zuluaga; Yolima Baena; Claudia-Elizabeth Mora; Luisa-Fernanda Ponce D'León is a Nursing article available to read on EtoBox.

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## Abstract Yam starch from __Dioscorea cayenensis‐rotundata__ complex was isolated and characterized by scanning electron microscopy (SEM), particle size analysis, X‐ray diffraction, differential scanning calorimetry (DSC), compaction and rheology, and compared to maize (__Zea mays__) and potato (__Solanum tuberosum__) starches. Yam starch exhibited a log‐normal distribution of flattened ovoid shaped granules with a mean particle size of 25 μm. X‐ray diffraction showed a C‐type crystalline pattern with the degree of relative crystallinity estimated to be 34%. DSC analysis suggests that the crystalline regions in yam starch are thermally and structurally more stable as in maize and potato. Irrespective of the relative humidity (39, 67, 78% R.H.) yam starch exhibited higher moisture uptakes than maize starch and lower than potato. Intermediate values of swelling power and amylose leaching were obtained for yam as compared to maize and potato. Compaction properties of yam and potato starches were similar. However, compacts from yam presented a relatively lower tensile strength. Aqueous starch systems (4%) of yam and maize starches showed analogous shear‐thinning (pseudo‐plastic) beha

Who reads Physicochemical Characterization and Application of Yam (Dioscorea cayenensis-rotundata) Starch as a Pharmaceutical Excipient?

Author

María-Fernanda Zuluaga; Yolima Baena; Claudia-Elizabeth Mora; Luisa-Fernanda Ponce D'León

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); Wiley - V C H Verlag GmbbH & Co.; Wiley; FASEB (ISSN 0038-9056)

Published

2007

Language

EN

Field

Nursing (Life Sciences)