1
|
Pang H, Ma C, Zhang S. Conversion of soybean oil extraction wastes into high-performance wood adhesives based on mussel-inspired cation-π interactions. Int J Biol Macromol 2022; 209:83-92. [PMID: 35351550 DOI: 10.1016/j.ijbiomac.2022.03.152] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Revised: 03/21/2022] [Accepted: 03/23/2022] [Indexed: 12/27/2022]
Abstract
As a soybean oil extractive byproduct, high temperature defatted soy meal (HSM) presents great potential as a raw material for vegetable protein adhesives to replace aldehyde-based adhesives in the wood-based panel production. However, the application has been hindered by its poor cold-pressing adhesive performance. Herein, a novel HSM-based adhesive with excellent cold-pressing adhesion performance was developed based on mussel-inspired cation-π interactions. Highly reactive polyamidoamine-epichlorohydrin (PAE) and folic acid (FA) were added into an HSM-based adhesive to construct a dual-network system stabilized by strong cation-π interactions. The coacervate formed by PAE and FA served as an "internal adhesive" to bond HSM particles together, yielding high initial viscosity but easy sizing. As expected, the prepared adhesive exhibited an excellent cold-pressing bonding strength of 423 kPa, showing a 295% improvement compared to the soy protein (SP) adhesive. To improve the hot-pressing bonding strength of the adhesives, inorganic calcium carbonate (CaCO3) particles were introduced into the adhesive system to build an organic-inorganic hybrid adhesive system. The wet shear strength of the SPAE-FA-CaCO3 adhesive significantly improved from 0.63 MPa to 0.96 MPa, meeting the requirements for the practical application. This method provides a novel strategy to exploit high-performance vegetable protein-based wood adhesives.
Collapse
Affiliation(s)
- Huiwen Pang
- MOE Key Laboratory of Wooden Material Science and Application and Key Laboratory of Wood Science and Engineering, Beijing Forestry University, Beijing 100083, PR China
| | - Chao Ma
- MOE Key Laboratory of Wooden Material Science and Application and Key Laboratory of Wood Science and Engineering, Beijing Forestry University, Beijing 100083, PR China
| | - Shifeng Zhang
- MOE Key Laboratory of Wooden Material Science and Application and Key Laboratory of Wood Science and Engineering, Beijing Forestry University, Beijing 100083, PR China.
| |
Collapse
|
2
|
Yi S, Li F, Wu C, Wei M, Tian J, Ge F. Synergistic leaching of heavy metal-polycyclic aromatic hydrocarbon in co-contaminated soil by hydroxamate siderophore: Role of cation-π and chelation. J Hazard Mater 2022; 424:127514. [PMID: 34879514 DOI: 10.1016/j.jhazmat.2021.127514] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Revised: 10/05/2021] [Accepted: 10/13/2021] [Indexed: 06/13/2023]
Abstract
Exploring a novel green efficient bioeluant is a golden key to unlock the ex-situ scale remediation of soil contaminated with heavy metals (HMs) and polycyclic aromatic hydrocarbons (PAHs). Hydroxamate siderophore (HDS) produced by Pseudomonas fluorescens HMP01, with certain hydrophobicity and strong coordination because of its special chemical structure (e.g., hydroxamic acid and dihydroxy quinoline chromophore), was used to investigate the bioleaching efficiency of HMs and PAHs from actual contaminated soils and underlying mechanisms. Results showed that leaching efficiency for HMs and PAHs from the co-contaminated soil was higher than that of single contaminated soil due to the cation-π interaction and coordination, which was closely related to the spacial configuration changes of the complex. HDS not only increased the bioleaching efficiency of cationic HMs by chelation (the leaching amount of Cd2+, Pb2+, Hg2+, Cu2+, Zn2+, and Ni2+ achieved 27.5, 110.4, 6.9, 477.7, 10,606.9, and 137.4 mg/kg HDS, respectively) but also enhanced the bioleaching amount of PAHs by solubilization (the leaching amount of phenanthrene reached 90.2 mg/kg HDS. Also, the residual HDS in soils caused no significant ecological risk. As expected, HDS is a desirable bioeluant to promote the scale application of the ex-situ remediation of soil contaminated with HMs and PAHs.
Collapse
Affiliation(s)
- Shengwei Yi
- College of Environment Science and Resources, Xiangtan University, Xiangtan 411105, PR China; Hunan Engineering Laboratory for High-Efficiency Purification Technology and its Application on Complex Heavy Metal Wastewater Treatment, Xiangtan 411105, PR China; Scientific Research Innovation Platform of Environmental Behavior and Control Principle about Novel Pollutants in Hunan Provincial Universities, Xiangtan 411105, PR China
| | - Feng Li
- College of Environment Science and Resources, Xiangtan University, Xiangtan 411105, PR China; Hunan Engineering Laboratory for High-Efficiency Purification Technology and its Application on Complex Heavy Metal Wastewater Treatment, Xiangtan 411105, PR China; Scientific Research Innovation Platform of Environmental Behavior and Control Principle about Novel Pollutants in Hunan Provincial Universities, Xiangtan 411105, PR China.
| | - Chen Wu
- College of Environment Science and Resources, Xiangtan University, Xiangtan 411105, PR China; Hunan Engineering Laboratory for High-Efficiency Purification Technology and its Application on Complex Heavy Metal Wastewater Treatment, Xiangtan 411105, PR China; Scientific Research Innovation Platform of Environmental Behavior and Control Principle about Novel Pollutants in Hunan Provincial Universities, Xiangtan 411105, PR China
| | - Ming Wei
- College of Environment Science and Resources, Xiangtan University, Xiangtan 411105, PR China; Hunan Engineering Laboratory for High-Efficiency Purification Technology and its Application on Complex Heavy Metal Wastewater Treatment, Xiangtan 411105, PR China; Scientific Research Innovation Platform of Environmental Behavior and Control Principle about Novel Pollutants in Hunan Provincial Universities, Xiangtan 411105, PR China
| | - Jiang Tian
- College of Environment Science and Resources, Xiangtan University, Xiangtan 411105, PR China; Hunan Engineering Laboratory for High-Efficiency Purification Technology and its Application on Complex Heavy Metal Wastewater Treatment, Xiangtan 411105, PR China; Scientific Research Innovation Platform of Environmental Behavior and Control Principle about Novel Pollutants in Hunan Provincial Universities, Xiangtan 411105, PR China
| | - Fei Ge
- College of Environment Science and Resources, Xiangtan University, Xiangtan 411105, PR China; Hunan Engineering Laboratory for High-Efficiency Purification Technology and its Application on Complex Heavy Metal Wastewater Treatment, Xiangtan 411105, PR China; Scientific Research Innovation Platform of Environmental Behavior and Control Principle about Novel Pollutants in Hunan Provincial Universities, Xiangtan 411105, PR China
| |
Collapse
|
3
|
Atmanene C, Ronin C, Téletchéa S, Gautier FM, Djedaïni-Pilard F, Ciesielski F, Vivat V, Grandjean C. Biophysical and structural characterization of mono/di-arylated lactosamine derivatives interaction with human galectin-3. Biochem Biophys Res Commun 2017; 489:281-6. [PMID: 28554839 DOI: 10.1016/j.bbrc.2017.05.150] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Accepted: 05/25/2017] [Indexed: 10/19/2022]
Abstract
Combination of biophysical and structural techniques allowed characterizing and uncovering the mechanisms underlying increased binding affinity of lactosamine derivatives for galectin 3. In particular, complementing information gathered from X-ray crystallography, native mass spectrometry and isothermal microcalorimetry showed favorable enthalpic contribution of cation-π interaction between lactosamine aryl substitutions and arginine residues from the carbohydrate recognition domain, which resulted in two log increase in compound binding affinity. This incrementing strategy allowed individual contribution of galectin inhibitor moieties to be dissected. Altogether, our results suggest that core and substituents of these saccharide-based inhibitors can be optimized separately, providing valuable tools to study the role of galectins in diseases.
Collapse
|
4
|
McIlwain BC, Vandenberg RJ, Ryan RM. Transport rates of a glutamate transporter homologue are influenced by the lipid bilayer. J Biol Chem 2015; 290:9780-8. [PMID: 25713135 DOI: 10.1074/jbc.m114.630590] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2014] [Indexed: 11/06/2022] Open
Abstract
The aspartate transporter from Pyrococcus horikoshii (GltPh) is a model for the structure of the SLC1 family of amino acid transporters. Crystal structures of GltPh provide insight into mechanisms of ion coupling and substrate transport; however, structures have been solved in the absence of a lipid bilayer so they provide limited information regarding interactions that occur between the protein and lipids of the membrane. Here, we investigated the effect of the lipid environment on aspartate transport by reconstituting GltPh into liposomes of defined lipid composition where the primary lipid is phosphatidylethanolamine (PE) or its methyl derivatives. We showed that the rate of aspartate transport and the transmembrane orientation of GltPh were influenced by the primary lipid in the liposomes. In PE liposomes, we observed the highest transport rate and showed that 85% of the transporters were orientated right-side out, whereas in trimethyl PE liposomes, 50% of transporters were right-side out, and we observed a 4-fold reduction in transport rate. Differences in orientation can only partially explain the lipid composition effect on transport rate. Crystal structures of GltPh revealed a tyrosine residue (Tyr-33) that we propose interacts with lipid headgroups during the transport cycle. Based on site-directed mutagenesis, we propose that a cation-π interaction between Tyr-33 and the lipid headgroups can influence conformational flexibility of the trimerization domain and thus the rate of transport. These results provide a specific example of how interactions between membrane lipids and membrane-bound proteins can influence function and highlight the importance of the role of the membrane in transporter function.
Collapse
Affiliation(s)
- Benjamin C McIlwain
- From the Transporter Biology Group, Discipline of Pharmacology and Bosch Institute, University of Sydney, Sydney, New South Wales 2006, Australia
| | - Robert J Vandenberg
- From the Transporter Biology Group, Discipline of Pharmacology and Bosch Institute, University of Sydney, Sydney, New South Wales 2006, Australia
| | - Renae M Ryan
- From the Transporter Biology Group, Discipline of Pharmacology and Bosch Institute, University of Sydney, Sydney, New South Wales 2006, Australia
| |
Collapse
|