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Vol. 28 No. 11 (2016): Vol 28 Issue 11

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Physico-Chemical, Pasting and Morphological Characterization of Grain Amaranth Starch

https://doi.org/10.14233/ajchem.2016.20012
Narender K. Chandla
Department of Food Engineering and Technology, S.L. Institute of Engineering & Technology (Deemed University), Longowal-148 106, India
D.C. Saxena
Department of Food Engineering and Technology, S.L. Institute of Engineering & Technology (Deemed University), Longowal-148 106, India
Sukhcharn Singh
Department of Food Engineering and Technology, S.L. Institute of Engineering & Technology (Deemed University), Longowal-148 106, India

Corresponding Author(s) : Narender K. Chandla

chandla84@yahoo.co.in

Asian Journal of Chemistry, Vol. 28 No. 11 (2016): Vol 28 Issue 11

Abstract

Amaranth cultivars e.g., Amaranthus chaulai, Amaranthus hypochondricus anapurna, Amaranthus hypochondricus durga and Amaranthus paniculates rajgeera have been explored for starch yield (31.47-37.20 %), purity of 99.54-99.74 (%) and other properties. Scanning electron microscopy revealed that amaranth starch granules isolated were of very small size (1.182-1.431 μm) and of well packed (polygonal) angular shapes. All amaranth cultivars had observed higher swelling power and water binding capacity in a range of (9.76-10.29 g/g) and (199.23-199.47 %), respectively. Among all starches, Amaranthus hypochondricus anapurna and Amaranthus hypochondricus durga starches had shown higher crystallinity, swelling power and water binding capacities. This suggests that Amaranthus hypochondricus anapurna and Amaranthus hypochondricus durga starches could be better utilized in where higher cracking type properties along with greater binding capacities are required. In contrary to other (Amaranthus chaulai, Amaranthus hypochondricus anapurna, Amaranthus hypochondricus durga) starches, Amaranthus paniculates rajgeera starch has shown higher solubility (54.60 %) and higher peak viscosity (1896cP) by Rapid Visco Analyzer.

Keywords

Amaranthus starches Pasting PSA SEM
Chandla, N. K., Saxena, D., & Singh, S. (2016). Physico-Chemical, Pasting and Morphological Characterization of Grain Amaranth Starch. Asian Journal of Chemistry, 28(11), 2457–2460. https://doi.org/10.14233/ajchem.2016.20012
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