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Hydrolysis of surfactin over activated carbon.

Abstract：

:Surfactin is obtained through biocatalysis by microorganisms. In our biorefinery concept, it is purified on activated carbon (AC) during downstream processing. Besides cyclic surfactin, it is possible to obtain linear surfactin analogues, when AC with specific properties is used. In the present article, the hydrolysis of various cyclic surfactin analogues mediated by activated carbon is described. Hydrolysis products were identified using HPLC/UV/MS and (Q-TOF)MS/MS. Hydrolytic activity of six commercial and three modified activated carbons was evaluated. The porous texture of ACs was determined by sorption measurements and elemental composition of ACs surface - by SEM-EDS analysis. Their pHPZC value and moisture, ash, and volatile matter content using proximate analysis were also determined. Properties of ACs were correlated with their hydrolytic activity, and the crucial role of alkaline pHPZC was found. The beneficial effect of alkaline pHPZC was further confirmed by acid modification of AC that had previously shown hydrolytic activity and lost this ability after the pHPZC decrease.

journal_name

Bioorg Chem

journal_title

Bioorganic chemistry

authors

Fałtynowicz H,Hodurek P,Kaczmarczyk J,Kułażyński M,Łukaszewicz M

doi

10.1016/j.bioorg.2019.03.070

subject

Has Abstract

pub_date

2019-12-01 00:00:00

pages

102896

eissn

0045-2068

issn

1090-2120

pii

S0045-2068(18)31314-2

journal_volume

93

pub_type

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