2^nd Workshop on the project “Research and development of marine degradable plastics with biodegradable initiation function”

Date: November 7th, 2025

 Venue: Room 407, 4F, Plaza Verde, Numazu City, Shizuoka, Japan

 Concurrent event: ICBP2025

Overview

　This research and development project aims to develop marine biodegradable plastics with a degradation initiation switch function to address the challenges of marine plastic waste and achieve Moonshot Goal 4: “Cool Earth & Clean Earth”.

　This workshop will showcase the cutting-edge research and development being conducted as part of this ambitious project. The focus will be on the creation and widespread adoption of marine biodegradable plastics, as well as the technical challenges that remain in realizing our vision for a sustainable future.

Program (November 7th, Room 407)

11:00  P.M. Prof. Ken-ichi Kasuya, Gunma University, Japan

Opening Remarks

11:10 Prof. Yuya Tachibana, Gunma University, Japan

Redox-responsive disulfide switches for triggered marine degradation of polyesters

11:30 Prof. Taizo Kabe, The University of Tokyo, Japan

Preparation of enzyme-embedded PBAT fibers by melt spinning and evaluation of their degradability

11:45 Dr. Jin Ho Seok, The University of Tokyo, Japan

Marine-biodegradable oligomeric lactic acid for enhancing cellulose acetate properties

 

12:00 Lunch break

 

13:55 Prof. Ken-ichiro Matsumoto, Hokkaido University, Japan

Biosynthesis and degradation of artificial polyhydroxyalkanoates

14:15 Dr. Shizuru Ishihara, Institute of Science Tokyo, Japan

Biosynthesis of P(3HB-block-2HB) copolymers from structurally related and unrelated carbon sources by engineered Ralstonia eutropha 

14:30 Dr. Qie Zihan, Institute of Science Tokyo, Japan

Comparative marine biodegradation behavior of synthetic and bacterial polyesters

 

14:45 Coffee break

 

15:10 Dr. Senri Hayashi, RIKEN, Japan

Marine-biodegradability of alternating copolymers with amino acid of different stereocompositions

15:25 Prof. Miwa Suzuki, Gunma University, Japan

Oceanic biodegradation mechanisms of chemosynthetic biodegradable polyesters: focusing on poly(butylene succinate-co-adipate)

15:40 Dr. Sangho Koh, Shinshu University, Japan

Unveiling marine biodegradation of lactate-based polyester (LAHB) as an advanced version of non-biodegradable polylactide 

15:55 Dr. Naliharifetra Jessica Ranaivoarimanana, JAMSTEC, Japan

Optimizing chitin‒CaCO₃ hydrogels for oyster spacers: Strength‒density‒disintegration trade-offs

16:10 Dr. Yuto Kaku, JAMSTEC, Japan

Effect of nanofibrillation on microbial community during chitin biodegradation

16:25  Closing

 

Program organizers and committee members:  

Ken-ichi KASUYA (Gunma U, Japan), Takeharu TSUGE (Science Tokyo, Japan), Tadahisa　IWATA (U Tokyo, Japan), Hideki ABE (RIKEN, Japan), Toshiaki FUKUI (Science Tokyo, Japan), Yuya TACHIBANA (Gunma U, Japan).

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