公开(公告)号：US20220349651A1

公开(公告)日：2022-11-03

申请号：US17245445

申请日：2021-04-30

Applicant: UPM-Kymmene Corporation

Inventor： Markus Nuopponen ,  Marjo Yliperttula ,  Arto Merivaara ,  Ossi Korhonen ,  Jacopo Zini ,  Elle Koivunotko ,  Lisa Chinello ,  Giulia Scapin ,  Anne Meriluoto ,  Lauri Paasonen

IPC: F26B5/06 ,  C12N5/00

Abstract: A method for freeze-drying a hydrogel composition is disclosed, the method comprising providing the hydrogel composition, wherein the hydrogel composition comprises cellulose nanofibrils and/or cellulose nanocrystals, at least one saccharide, at least one amino acid, and biologics; and freeze-drying the hydrogel composition, thereby obtaining a freeze-dried hydrogel composition.