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Acknowledgements
This work was financially supported by Sunstar Inc. This study was also supported in part by JSPS KAKENHI
Grant (KO/No. 22H02286). We performed a collaborative research to reveal the bioactivity related to the rice
bran protein digest.
Author contributions
K.O. supervised and designed the experiments; M.S., N.S. and B.Z. with help from K.K. performed the experiments and analyzed the data; M.S. and K.O. wrote the paper; and all authors discussed the results and the
manuscript.
Funding
The authors received financially support from SUNSTAR Inc.
Competing interests The authors declare no competing interests.
Additional information
Supplementary Information The online version contains supplementary material available at https://doi.org/
10.1038/s41598-023-30021-3.
Correspondence and requests for materials should be addressed to K.O.
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