公开(公告)号：US20250034347A1

公开(公告)日：2025-01-30

申请号：US18710760

申请日：2022-11-15

Applicant: CARBIOS

Inventor： ALAIN MARTY ,  GRÉGORY ARNAL ,  SOPHIE DUQUESNE ,  VINCENT TOURNIER ,  ALEXANDRE GILLES

IPC: C08J11/10 ,  C12N9/18

Abstract: The present invention relates to the use of specific enzymes, more particularly of specific esterases having a polyester degrading activity, for the degradation of polyester or polyester containing material in acidic conditions at a pH between 3 and 6. The present invention also relates to a process for degrading polyester or polyester containing material, such as plastic products, comprises a step of enzymatic depolymerization implemented in acidic conditions at a pH between 3 and 6. The process of the invention is particularly suited to degrade polyethylene terephthalate, and polyethylene terephthalate containing material.

公开(公告)号：US20250019678A1

公开(公告)日：2025-01-16

申请号：US18710658

申请日：2022-11-15

Applicant: CARBIOS

Inventor： ALAIN MARTY ,  ISABELLE ANDRE ,  GRÉGORY ARNAL ,  SOPHIE DUQUESNE ,  SABINE GAVALDA ,  MARC GUEROULT ,  VINCENT TOURNIER

IPC: C12N9/18 ,  C08J11/10 ,  C11D3/386

Abstract: The present invention relates to novel esterases, more particularly to esterase variants having improved activity and/or improved thermostability compared to the parent esterase of SEQ ID NO:1, SEQ ID NO:2 or SEQ ID NO:3 in acidic conditions and the uses thereof for degrading polyester containing material, such as plastic products. The esterases of the invention are particularly suited to degrade polyethylene terephthalate, and material containing polyethylene terephthalate in acidic conditions.