Volume 101, Issue 1 pp. 231-247
RESEARCH ARTICLE

Physicochemical and functional properties of fermented pea and navy bean protein isolates

Azita Khorsandi

Azita Khorsandi

Department of Food and Bioproduct Sciences, University of Saskatchewan, Saskatoon, Saskatchewan, Canada

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Andrea K. Stone

Andrea K. Stone

Department of Food and Bioproduct Sciences, University of Saskatchewan, Saskatoon, Saskatchewan, Canada

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Dai Shi

Dai Shi

Department of Food and Bioproduct Sciences, University of Saskatchewan, Saskatoon, Saskatchewan, Canada

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Caishuang Xu

Caishuang Xu

National Research Council Canada, Saskatoon, Saskatchewan, Canada

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Prem P. Das

Prem P. Das

National Research Council Canada, Saskatoon, Saskatchewan, Canada

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Yuping Lu

Yuping Lu

National Research Council Canada, Saskatoon, Saskatchewan, Canada

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Nandhakishore Rajagopalan

Nandhakishore Rajagopalan

National Research Council Canada, Saskatoon, Saskatchewan, Canada

Department of Chemical and Biological Engineering, University of Saskatchewan, Saskatoon, Saskatchewan, Canada

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Takuji Tanaka

Takuji Tanaka

Department of Food and Bioproduct Sciences, University of Saskatchewan, Saskatoon, Saskatchewan, Canada

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Darren R. Korber

Darren R. Korber

Department of Food and Bioproduct Sciences, University of Saskatchewan, Saskatoon, Saskatchewan, Canada

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Michael T. Nickerson

Corresponding Author

Michael T. Nickerson

Department of Food and Bioproduct Sciences, University of Saskatchewan, Saskatoon, Saskatchewan, Canada

Correspondence Michael T. Nickerson, Department of Food and Bioproduct Sciences, University of Saskatchewan, 51 Campus Dr, Saskatoon, SK S7N 5A8, Canada.

Email: [email protected]

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First published: 27 November 2023

Abstract

Background and Objectives

There has been a significant increase in the use of fermentation for protein modification by the food industry. This research aimed to investigate the use of solid-state fermentation (SSF) by Aspergillus oryzae NRRL 5590 on pea and navy bean protein isolates (PPI and NBPI, respectively) to enhance their physicochemical and functional properties.

Findings

The impact of fermentation was more profound on PPI than NBPI with a higher degree of hydrolysis achieved for the former (9.3% vs. 4.4%). Fermented PPI had significantly increased protein content, surface charge and hydrophobicity, solubility, and foaming properties, but decreased emulsion stability. For NBPI, modifications were only observed for surface hydrophobicity and water hydration capacity (WHC), which both increased after fermentation. Overall, navy bean proteins were less susceptible to protein hydrolysis than pea proteins upon fermentation, possibly due to the phaseolin protein in navy bean.

Conclusions

In summary, fermentation may be used to enhance the solubility and foaming properties of PPI and WHC of NBPI for their use as ingredients in applications where such higher functionalities are favorable.

Significance and Novelty

The results provide insights into pulse protein modification by bioprocessing, specifically fermentation, and opportunities for potential value-added applications for pea and navy bean proteins.

CONFLICT OF INTEREST STATEMENT

The authors declare no conflict of interest.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.