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The relationships between chemical composition, structure and physicochemical properties such as pasting, thermal, and textural properties of 12 temperate rice cultivars grown in Heilongjiang Province, China were investigated in this study. There were significant differences in the content of fat, protein, ash, amylose, damaged starch among 12 cultivars. Brabender Viscograph results showed that gelatinization time, peak viscosity, pasting and peak temperature ranged from 9 min to 15 min, 2100 BU to 2500 BU, 58.75 ℃ to 72.00 ℃ and 63.75 ℃ to 84.45 ℃, respectively, except for the waxy one Longjing 9. To, Tp, Tc and ΔH were found in the range of 58.34 ℃ to 67.96 ℃, 65.39 ℃ to 75.38 ℃, 78.47 ℃ to 90.69 ℃ and 2.036 J/g to 3.127 J/g respectively. Scanning Electron Micro-photograph results showed that all starch granules were polyhedral with irregular shapes, except Longjing 9 showing signs of the loss of physical integrity. The hardness, adhesiveness, springiness, gumminess, cohesiveness and resilience ranged from 395.87 g to 1161.76 g, -90.842 g·mm to -36.4 g·mm, 0.498 to 0.747, 78.631 g to 466.837 g, 0.199 to 0.569, 0.321 to 0.504, respectively. Correlation studies indicated that amylose, damaged starch, protein, fat and ash played a more important role in determining the rice properties of pasting, thermal, crystallinity and texture.


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Physico-chemical properties and structure of rice cultivars grown in Heilongjiang Province of China

Show Author's information Yinyuan HeaFenglian Chena( )Yanguo ShiaZhexian GuanaNa Zhanga( )Osvaldo H. Campanellab
College of Food Science and Engineering, Harbin University of Commerce, Heilongjiang, Harbin, 150076, China
Department of Agricultural and Biological Engineering, Purdue University, 745 Agricultural Mall Drive, West Lafayette, IN, 47907, USA

Peer review under responsibility of KeAi Communications Co., Ltd.

Abstract

The relationships between chemical composition, structure and physicochemical properties such as pasting, thermal, and textural properties of 12 temperate rice cultivars grown in Heilongjiang Province, China were investigated in this study. There were significant differences in the content of fat, protein, ash, amylose, damaged starch among 12 cultivars. Brabender Viscograph results showed that gelatinization time, peak viscosity, pasting and peak temperature ranged from 9 min to 15 min, 2100 BU to 2500 BU, 58.75 ℃ to 72.00 ℃ and 63.75 ℃ to 84.45 ℃, respectively, except for the waxy one Longjing 9. To, Tp, Tc and ΔH were found in the range of 58.34 ℃ to 67.96 ℃, 65.39 ℃ to 75.38 ℃, 78.47 ℃ to 90.69 ℃ and 2.036 J/g to 3.127 J/g respectively. Scanning Electron Micro-photograph results showed that all starch granules were polyhedral with irregular shapes, except Longjing 9 showing signs of the loss of physical integrity. The hardness, adhesiveness, springiness, gumminess, cohesiveness and resilience ranged from 395.87 g to 1161.76 g, -90.842 g·mm to -36.4 g·mm, 0.498 to 0.747, 78.631 g to 466.837 g, 0.199 to 0.569, 0.321 to 0.504, respectively. Correlation studies indicated that amylose, damaged starch, protein, fat and ash played a more important role in determining the rice properties of pasting, thermal, crystallinity and texture.

Keywords: Texture, Morphology, Thermal, Rice flour, Gelatinization

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Publication history
Copyright
Acknowledgements

Publication history

Received: 11 October 2019
Revised: 02 April 2020
Accepted: 21 May 2020
Published: 03 June 2020
Issue date: January 2021

Copyright

© 2021 Beijing Academy of Food Sciences. Production and hosting by Elsevier B.V. on behalf of KeAi Communications Co., Ltd.

Acknowledgements

This research was financially supported by Major Science and Technology Program of Heilongjiang Province (No.2019ZX08B02), Harbin Municipal Bureau of Science and Technology in Heilongjiang province-Grant (No.2017RAQXJ030), National Natural Science Foundation (No. 31871747), and Innovative Research Fund for Postgraduates of Harbin University of Commerce (YJSCX2019-565HSD).

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