Valorization of soda lignin from wheat straw solid-state fermentation: Production of oleogels.
Authors
Borrero-López, Antonio María; Blánquez Moya, AlbaIdentifiers
Permanent link (URI): http://hdl.handle.net/10017/33942DOI: 10.1021/acssuschemeng.7b04846
ISSN: 2168-0485
Date
2018-02-19Funders
Ministerio de Economía, Industria y Competitividad
Bibliographic citation
ACS Sustainable Chemistry & Engineering, 2018, v. 6, p. 5198-5205
Keywords
Actinobacteria
Castor oil
Diisocyanate
FTIR
Lubricating grease
Rheology
Streptomyces
Project
CTQ2014-56038-C3-1R (Ministerio de Economía, Industria y Competitividad)
Document type
info:eu-repo/semantics/article
Version
info:eu-repo/semantics/publishedVersion
Rights
Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)(c) American Chemical Society, 2018
(c) American Chemical Society, 2018
Access rights
info:eu-repo/semantics/openAccess
Abstract
This work describes the solid-state fermentation(SSF) of wheat straw with Streptomyces sp. MDG147 and further soda-pulping process to obtain wheat straw soda lignins(WSLs). Subsequently, these WSLs were NCO-functionalized with 1,6-hexamethylene diisocyanate and then dispersed in castor oil to achieve stable oleogels. The WSLs were characterized using standard analytical methods, gel permeation chromatography, Fourier transform infrared spectroscopy,differential scanning calorimetry, and thermogravimetric analysis. Rheological properties of oleogels were determinedby means of small-amplitude oscillatory shear and viscous flow measurements. The enzymatic profile and production oflignin−carbohydrate complexes were recorded along the growth time of Streptomyces, whose life cycle was achieved after 7 days. NCO-functionalized WSL was able to chemically interact with castor oil via urethane bonding, providing oleogels with suitable rheological characteristics. Linear viscoelastic functions and viscosity values of oleogels were higher when wheat straw was submitted to SSF using Streptomyces, turning out in stronger oleogels.
Files in this item
Files | Size | Format |
|
---|---|---|---|
Valorization_Blanquez_ACS_2018.pdf | 1.504Mb |
![]() |
Files | Size | Format |
|
---|---|---|---|
Valorization_Blanquez_ACS_2018.pdf | 1.504Mb |
![]() |