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Wei H, Li W, Chen H, Wen X, He J, Li J. Simultaneous Diels-Alder click reaction and starch hydrogel microsphere production via spray drying. Carbohydr Polym 2020; 241:116351. [PMID: 32507200 DOI: 10.1016/j.carbpol.2020.116351] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Revised: 04/18/2020] [Accepted: 04/19/2020] [Indexed: 12/21/2022]
Abstract
Herein, starch was used as a raw material to produce hydrogel microspheres via a strategy that combines spray drying and a Diels-Alder reaction. First, the starch was modified with N-maleoyl alanine and succinic acid amide. Second, starch hydrogel microspheres (SGPs) and drug-loaded hydrogel microspheres (5-Fu/SGPs) were produced by spray drying an aqueous solution of the as-prepared modified starch, forming chemical crosslinks via an in situ Diels-Alder reaction during the spray drying. The microspheres slowed the release rate of 5-Fu. In vitro cytotoxicity tests indicated that the SGPs are non-toxic for model human breast cancer cells; however, the 5-Fu/SGPs demonstrated clear cytotoxicity for human breast cancer cells. Taking into account the ease of the spray drying process and the good performance of the prepared microspheres, the strategy presented here has the potential to be applied to the green preparation of drug-loaded hydrogel microspheres.
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Affiliation(s)
- Hongliang Wei
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou, PR China.
| | - Weikun Li
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou, PR China
| | - Hongli Chen
- The Key Laboratory of Biomedical Material, School of Life Science and Technology, Xinxiang Medical University, Xinxiang, PR China
| | - Xuejun Wen
- School of Engineering, Virginia Commonwealth University, Richmond, VA, USA
| | - Juan He
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou, PR China
| | - Jingjing Li
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou, PR China.
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Wu Y, Jiang L, Lin Y, Qian L, Xu F, Lang X, Fan S, Zhao Z, Li H. Novel crude glycerol pretreatment for selective saccharification of sugarcane bagasse via fast pyrolysis. BIORESOURCE TECHNOLOGY 2019; 294:122094. [PMID: 31521980 DOI: 10.1016/j.biortech.2019.122094] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Revised: 08/28/2019] [Accepted: 08/29/2019] [Indexed: 05/12/2023]
Abstract
Pretreatment is a vital process for efficient saccharification and utilization of lignocellulose. In this study, crude glycerol derived from biodiesel production was used for pretreatment to facilitate selective saccharification via fast pyrolysis. Due to the efficient removal of alkali and alkaline earth metals (>95.0%) and lignin (79.4%) by crude glycerol pretreatment, the yield of levoglucosan was evaluated to 25.2% as compared to those from pure glycerol pretreated (14.4%) and untreated sugarcane bagasse (8.4%). Meanwhile, the production of inhibitors (e.g. acetic acid, phenol) to biocatalysts was also obviously inhibited from crude glycerol pretreated biomass. Consequently, this work provided a cost-effective and eco-friendly pretreatment mode, which could not only make full utilization of crude glycerol, but also improve the fermentability of lignocellulosic pyrolysate.
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Affiliation(s)
- Yaxiang Wu
- Key Laboratory of Enhanced Heat Transfer and Energy Conservation, Ministry of Education, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China; Guangdong Key Laboratory of New and Renewable Energy Research and Development, Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China
| | - Liqun Jiang
- Guangdong Key Laboratory of New and Renewable Energy Research and Development, Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China.
| | - Yan Lin
- Guangdong Key Laboratory of New and Renewable Energy Research and Development, Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China
| | - Le Qian
- Guangdong Key Laboratory of New and Renewable Energy Research and Development, Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China
| | - Feixiang Xu
- Guangdong Key Laboratory of New and Renewable Energy Research and Development, Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China
| | - Xuemei Lang
- Key Laboratory of Enhanced Heat Transfer and Energy Conservation, Ministry of Education, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Shuanshi Fan
- Key Laboratory of Enhanced Heat Transfer and Energy Conservation, Ministry of Education, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Zengli Zhao
- Guangdong Key Laboratory of New and Renewable Energy Research and Development, Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China
| | - Haibin Li
- Guangdong Key Laboratory of New and Renewable Energy Research and Development, Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China
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