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Study on properties of Cyperus esculentus starch grown in Xinjiang, China

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Abstract

The chemical composition, morphological characteristics, and pasting properties of Cyperus esculentus starch (CES) grown in Xinjiang, China, were investigated and compared with those of potato starch (PS). The amylopectin (AP) content in CES was measured as of 83.82%. Most of the starch granules of Cyperus esculentus (CE) were round or elliptical while the granule diameter ranged from 3.41 to 12.12 µm with an average value of 8.60 µm, and had a typical polarization cross. The X-ray diffraction (XRD) data showed that CES was of A-type crystals. The peak viscosity value of CES paste was much lower than that of PS, and the freeze–thaw stability of CES paste was slightly higher than that of PS, but its light transmittance was lower.

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