Valorization of Acid Isolated High Yield Lignin Nanoparticles as Innovative Antioxidant/Antimicrobial Organic Materials

被引：280

作者：

Yang, Weijun ^{[1
]}

Fortunati, Elena ^{[1
]}

Gao, Daqian ^{[2
]}

Balestra, Giorgio M. ^{[3
]}

Giovanale, Geremia ^{[3
]}

He, Xiaoyan ^{[1
,4
]}

Torre, Luigi ^{[1
]}

Kenny, Jose M. ^{[1
]}

Puglia, Debora ^{[1
]}

机构：

[1] Univ Perugia, Civil & Environm Engn Dept, Mat Engn Ctr, UdR INSTM, Str Pentima 4, I-05100 Terni, Italy

[2] Chinese Acad Sci, Changchun Inst Appl Chem, CIAS, Renmin Rd 5625, Changchun 130022, Jilin, Peoples R China

[3] Univ Tuscia, Dept Agr Sci & Forestry DAFNE, Via S Camillo De Lellis Snc, I-01100 Viterbo, Italy

[4] Northeast Forestry Univ, Mat Sci & Engn Sch, Hexing Rd 26, Harbin 150040, Heilongjiang, Peoples R China

来源：

ACS SUSTAINABLE CHEMISTRY & ENGINEERING | 2018年 / 6卷 / 03期

关键词：

Nanolignin; High yield synthesis; Acid extraction; Plant protection; Organic antioxidant; ANTIOXIDANT PROPERTIES; PROTEIN OXIDATION; KRAFT LIGNIN; FILMS; BIONANOCOMPOSITES; FRACTIONATION; PERFORMANCE; FABRICATION; COMPOSITES; INHIBITION;

D O I：

10.1021/acssuschemeng.7b03782

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

In this study, dissolution of pristine alkali lignin into ethylene glycol, followed by addition of different acidic conditions (HCl, H2SO4, and H3PO4 at different pH) has been considered as a simple method to prepare high yield lignin nanoparticles (LNP). Field emission scanning electron microscopy (FESEM), Zeta potential, gel permeation chromatography (GPC), and thermogravimetric analysis (TGA) have been utilized to determine the influence of the precipitation procedures on particle size, Zeta potential, molecular weight, and thermal stability of final obtained LNP. Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), and nuclear magnetic resonance (NMR) were also considered to investigate the influence of lignin chemical structures and composition on its antioxidative and antimicrobial behaviors. Results from DPPH (1,1-diphenyl-2-picryl-hydrazyl) activity revealed the antioxidant response of LNP aqueous solutions, whereas results from antimicrobial tests confirmed LNP as effective antibacterial agents against Gram negative bacteria Pseudomonas syringae pv tomato (CFBP 1323) (Pst), Xanthomonas axonopodis pv vesicatoria (CFBP 3274) (Xav), and Xanthomonas arboricola pv pruni (CFBP 3894) (Xap) plant pathogen strains. The results confirmed how high efficient antioxidant and antimicrobial LNP could be considered as an easy methodology for plant pathogens control. LNPs penetrate the cell wall by its lysis and react with ROS species inducing oxidative stress, ATP depletion, and decrease in intracellular pH of plant bacteria.

引用

页码：3502 / 3514

页数：25

共 77 条

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