Spatially confined lignin nanospheres for biocatalytic ester synthesis in aqueous media.

Abstract:

:Dehydration reactions proceed readily in water-filled biological cells. Development of biocatalysts that mimic such compartmentalized reactions has been cumbersome due to the lack of low-cost nanomaterials and associated technologies. Here we show that cationic lignin nanospheres function as activating anchors for hydrolases, and enable aqueous ester synthesis by forming spatially confined biocatalysts upon self-assembly and drying-driven aggregation in calcium alginate hydrogel. Spatially confined microbial cutinase and lipase retain 97% and 70% of their respective synthetic activities when the volume ratio of water to hexane increases from 1:1 to 9:1 in the reaction medium. The activity retention of industrially most frequently used acrylic resin-immobilized Candida antarctica lipase B is only 51% under similar test conditions. Overall, our findings enable fabrication of robust renewable biocatalysts for aqueous ester synthesis, and provide insight into the compartmentalization of diverse heterogeneous catalysts.

journal_name

Nat Commun

journal_title

Nature communications

authors

Sipponen MH,Farooq M,Koivisto J,Pellis A,Seitsonen J,Österberg M

doi

10.1038/s41467-018-04715-6

subject

Has Abstract

pub_date

2018-06-12 00:00:00

pages

2300

issue

1

issn

2041-1723

pii

10.1038/s41467-018-04715-6

journal_volume

9

pub_type

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