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Physicochemical properties and structure of buckwheat flour modified by steam-treatment

  • Bowen Yang , Jiake Wang , Tongliang Yang , Yifu Zhang , Yuhe Wang , Siqi Qiang , Junjun Zhou , Shuhong Li and Ye Chen ORCID logo EMAIL logo
Published/Copyright: April 12, 2023

Abstract

The natural buckwheat flour exhibits poor processing behaviour due to its conservative structure and the lack of gluten protein, thereby limiting its use in the food industry. The replacement of chemical modification with sustainable, environmentally friendly steam treatment is, currently, technically feasible and promising for most chemical modification methods. The data showed that the steam-treated buckwheat flour degree of gelatinization increased to 99.3 g/100 g, and water absorption increased to 3.93 g/100 g. Also, particle size of the samples in the trial group was significantly larger compared to the control group. Scanning electron microscopy and infrared tests showed that not only did the steam treatment disrupt the granular structure of the buckwheat flour, but its proximity crystalline ordering structure Importantly, rheological behaviour tests showed that the steam-treated buckwheat gel exhibited a better viscoelasticity. Consequently, steam-treated pre-gelatinized buckwheat flour readily forms a tight network structure and provided important information for potential processing applications.


Corresponding author: Ye Chen, State Key Laboratory of Food Nutrition and Safety; College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, China, E-mail:

  1. Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.

  2. Research funding: None declared.

  3. Conflict of interest statement: The authors declare no conflicts of interest regarding this article.

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Received: 2022-10-26
Accepted: 2023-03-20
Published Online: 2023-04-12

© 2023 Walter de Gruyter GmbH, Berlin/Boston

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