AUTHOR=Ishida Shinnosuke , Kudo Shinji , Asano Shusaku , Hayashi Jun-ichiro TITLE=Multi-step pre-treatment of rice husk for fractionation of components including silica JOURNAL=Frontiers in Chemistry VOLUME=13 YEAR=2025 URL=https://www.frontiersin.org/journals/chemistry/articles/10.3389/fchem.2025.1538797 DOI=10.3389/fchem.2025.1538797 ISSN=2296-2646