Molecules (2019)
Update date:2022-08-17
Topics:
Lauberte, Liga
Fabre, Gabin
Ponomarenko, Jevgenija
Dizhbite, Tatiana
Evtuguin, Dmitry V.
Telysheva, Galina
Trouillas, Patrick
The valorization of lignins as renewable aromatic feedstock is of utmost importance in terms of the use of sustainable resources. This study provides a deductive approach towards market-oriented lignin-derived antioxidants by ascertaining the direct effect of different structural features of lignin on the reactivity of its phenolic OH groups in the radical scavenging reactions. The antioxidant activity of a series of compounds, modeling lignin structural units, was experimentally characterized and rationalized, using thermodynamic descriptors. The calculated O-H bond dissociation enthalpies (BDE) of characteristic lignin subunits were used to predict the modification pathways of technical lignins. The last ones were isolated by soda delignification from different biomass sources and their oligomeric fractions were studied as a raw material for modification and production of optimized antioxidants. These were characterized in terms of chemical structure, molecular weight distribution, content of the functional groups, and the antioxidant activity. The developed approach for the targeted modification of lignins allowed the products competitive with two commercial synthetic phenolic antioxidants in both free radical scavenging and stabilization of thermooxidative destruction of polyurethane films.
View MoreFeiyang Biotechnology Co., Ltd.
Contact:+86-533-7866339
Address:Qilu Chemistry Park, 200m north of Management Community Building of Park
Contact:86-21-57725962
Address:shanghai
Chengdu Biopurify Phytochemicals Ltd.
website:http://www.phytopurify.com
Contact:+86-28-82633397
Address:2F,No.11 Building,No.388 Rongtaidadao CNSTP,Wenjiang Zone,Chengdu,Sichuan, China
Nanjing Legend Pharmaceutical & Chemical Co., Ltd.
Contact:+86-25-83767696
Address:14-7 Zhongshan Lu Guluo District, Nanjing
Chengdu Gelipu Biotechnology Co., Ltd.
website:http://www.glp-china.com
Contact:86-28-82610909
Address:chegndu
Doi:10.14233/ajchem.2014.16861
(2014)Doi:10.1002/anie.201209443
(2013)Doi:10.1039/c2cc38429a
(2013)Doi:10.1021/ja00817a026
(1974)Doi:10.1021/ja01550a043
(1958)Doi:10.1021/acs.inorgchem.7b00913
(2017)