About the Authors

Yuma Iwai

Affiliation Laboratory of Biochemistry, Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Yamashiro-cho, Tokushima, Japan

Kouki Murakami

Affiliation Research group, Research and Production Technology Division, Kanonji Institute, The Research Foundation for Microbial Diseases of Osaka University, Kanonji, Kagawa, Japan

Yasuyuki Gomi

Affiliation Research group, Research and Production Technology Division, Kanonji Institute, The Research Foundation for Microbial Diseases of Osaka University, Kanonji, Kagawa, Japan

Toshihiro Hashimoto

Affiliation Laboratory of Pharmacognosy, Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Yamashiro-cho, Tokushima, Japan

Yoshinori Asakawa

Affiliation Laboratory of Pharmaceutical Chemistry, Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Yamashiro-cho, Tokushima, Japan

Yoshinobu Okuno

Affiliation Research group, Research and Production Technology Division, Kanonji Institute, The Research Foundation for Microbial Diseases of Osaka University, Kanonji, Kagawa, Japan

Toyokazu Ishikawa

Affiliation Research group, Research and Production Technology Division, Kanonji Institute, The Research Foundation for Microbial Diseases of Osaka University, Kanonji, Kagawa, Japan

Dai Hatakeyama

Affiliation Laboratory of Biochemistry, Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Yamashiro-cho, Tokushima, Japan

Noriko Echigo

Affiliation Laboratory of Biochemistry, Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Yamashiro-cho, Tokushima, Japan

Takashi Kuzuhara

kuzuhara@ph.bunri-u.ac.jp

Affiliation Laboratory of Biochemistry, Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Yamashiro-cho, Tokushima, Japan

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: TK. Performed the experiments: YI KM YG YO TI. Analyzed the data: NE DH TK. Contributed reagents/materials/analysis tools: TH YA. Wrote the paper: TK. Purified the phytochemicals: TH YA. Performed the PA endonuclease assay: YI NE DH TK. Performed the anti-influenza assay: KM YG OY IT. Devised the research plan, performed the docking simulation analysis: TK.