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Huang J, Feng Y, Xie H, Liu X, Zhang Q, Wang B, Xing B. Biodegradable microplastics aging processes accelerated by returning straw in paddy soil. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 945:173930. [PMID: 38879027 DOI: 10.1016/j.scitotenv.2024.173930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2024] [Revised: 05/20/2024] [Accepted: 06/09/2024] [Indexed: 06/21/2024]
Abstract
Biodegradable microplastics (MPs) have been released into agricultural soils and inevitably undergo various aging processes. Straw return is a popular agricultural management strategy in many countries. However, the effect of straw return on the aging process of biodegradable MPs in flooded paddy soil, which is crucial for studying the characteristics, fate, and environmental implications of biodegradable MPs, remains unclear. Here, we constructed a 180-day microcosm incubation to elucidate the aging mechanism of polylactic acid (PLA)-MPs in straw-enriched paddy soil. This study elucidated that the prominent aging characteristic of PLA-MPs occurred in the straw-enriched paddy soil, accompanied by increased chrominance (76.64-182.3 %), hydrophilicity (2.92-22.07 %), roughness (33.12-58.01 %), and biofilm formation (42.12-100.3 %) for the PLA-MPs, especially with 2 % (w/w) straw return treatment (P < 0.05). A 2 % straw return treatment has significantly impacted ester CO group changes in PLA-MPs, altered the MPs-attached soil bacterial communities composition, strengthened bacterial network structure, and increased soil proteinase K activity. The findings of this work demonstrated that flooded, straw-enriched paddy soil accelerated PLA-MPs aging affected by soil-water chemistry, soil microbe, and soil enzymatic. This study helps to deepen our understanding of the aging process of PLA-MPs in straw return paddy soil. ENVIRONMENTAL IMPLICATION: Microplastics (MPs) are emerging contaminants in the global soil and terrestrial ecosystems. Biodegradable MPs are more likely to be formed and released into agricultural soils during aging. Straw return is a popular agricultural management strategy in many countries. Considering the wide use of plastic film, sewage sludge, plastic-coated fertilizer, and organic fertilizer in agricultural ecosystems, it is crucial to pay attention to the aging process of biodegradable MPs in straw-enriched paddy soil, which has not been adequately emphasized. This aspect has been overlooked in previous studies and threatens ecosystems. This study demonstrated that straw-enriched paddy soil accelerated polylactic acid (PLA)-MPs aging influenced by the dissolved organic matter, microorganisms, and enzyme activity associated with straw decomposition.
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Affiliation(s)
- Junxia Huang
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Yanfang Feng
- Key Laboratory of Agro-Environment in Downstream of Yangtze Plain, Ministry of Agriculture and Rural Affairs, Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
| | - Huifang Xie
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Xiaobo Liu
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Qiang Zhang
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Bingyu Wang
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China.
| | - Baoshan Xing
- Stockbridge School of Agriculture, University of Massachusetts, Amherst, MA 01003, USA
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2
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Sadeghi M. The untold story of starch as a catalyst for organic reactions. RSC Adv 2024; 14:12676-12702. [PMID: 38645516 PMCID: PMC11027044 DOI: 10.1039/d4ra00775a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Accepted: 04/04/2024] [Indexed: 04/23/2024] Open
Abstract
Starch is one of the members of the polysaccharide family. This biopolymer has shown many potential applications in different fields such as catalytic reactions, water treatment, packaging, and food industries. In recent years, using starch as a catalyst has attracted much attention. From a catalytic point of view, starch can be used in organic chemistry reactions as a catalyst or catalyst support. Reports show that as a catalyst, simple starch can promote many heterocyclic compound reactions. On the other hand, functionalized starch is not only capable of advancing the synthesis of heterocycles but also is a good candidate catalyst for other reactions including oxidation and coupling reactions. This review tries to provide a fair survey of published organic reactions which include using starch as a catalyst or a part of the main catalyst. Therefore, the other types of starch applications are not the subject of this review.
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Affiliation(s)
- Masoud Sadeghi
- Department of Organic Chemistry, Faculty of Chemistry, University of Kashan P.O. Box: 87317-51167 Kashan Iran
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3
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Long W, Wei Z, Zhou F, Li S, Yin K, Zhao Y, Yu S, Qi H. Alkaline Hydrolysis of Waste Acrylic Fibers Using the Micro-Water Method and Its Application in Drilling Fluid Gel Systems. Gels 2023; 9:974. [PMID: 38131960 PMCID: PMC10742864 DOI: 10.3390/gels9120974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 12/01/2023] [Accepted: 12/08/2023] [Indexed: 12/23/2023] Open
Abstract
Filtrate reducer is a drilling fluid additive that can effectively control the filtration loss of drilling fluid to ensure the safe and efficient exploitation of oilfields. It is the most widely used treatment agent in oilfields. Due to its moderate conditions and controllable procedure, alkaline hydrolysis of high-purity waste polyacrylonitrile has been utilized for decades to produce filtrate reducer on a large scale in oilfields. However, the issues of long hydrolysis time, high viscosity of semi-finished products, high drying cost, and tail gas pollution have constrained the development of the industry. In this study, low-purity waste acrylic fiber was first separated and purified using high-temperature hydroplastization, and the hydrolyzed product was obtained using alkaline hydrolysis with the micro-water method, which was called MW-HPAN. The hydrolysis reaction was characterized using X-ray diffraction, scanning electron microscopy, infrared spectroscopy, and thermogravimetric analysis, and the elemental analysis showed a hydrolysis degree of 73.21%. The experimental results showed that after aging at 180 °C for 16 h, the filtration volume of the freshwater base slurry with 0.30% dosage and 4% brine base slurry with 1.20% dosage was 12.7 mL and 18.5 mL, respectively. The microstructure and particle size analysis of the drilling fluid gel system showed that MW-HPAN could prevent the agglomeration of clay and maintain a reasonable particle size distribution even under the combined deteriorating effect of high temperature and inorganic cations, thus forming a dense filter cake and achieving a low filtrate volume of the drilling fluid gel system. Compared with similar commercially available products, MW-HPAN has better resistance to temperature and salt in drilling fluid gel systems, and the novel preparation method is promising to be extended to practical production.
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Affiliation(s)
| | | | - Fengshan Zhou
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences (Beijing), No. 29 Xueyuan Road, Haidian District, Beijing 100083, China; (W.L.); (Z.W.); (S.L.); (K.Y.); (Y.Z.); (S.Y.); (H.Q.)
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4
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Yu F, Pei Y, Zhang X, Ma J. Weathering and degradation of polylactic acid masks in a simulated environment in the context of the COVID-19 pandemic and their effects on the growth of winter grazing ryegrass. JOURNAL OF HAZARDOUS MATERIALS 2023; 448:130889. [PMID: 36731322 PMCID: PMC9882953 DOI: 10.1016/j.jhazmat.2023.130889] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 01/12/2023] [Accepted: 01/26/2023] [Indexed: 06/18/2023]
Abstract
The COVID-19 pandemic has led to explosive growth in the production and consumption of disposable medical masks, which has caused new global environmental problems due to the improper disposal of these masks and lack of effective mask recycling methods. To reduce the environmental load caused by the inability of synthetic plastics to degrade, polylactic acid (PLA) masks, as a biodegradable environmentally friendly plastic, may become a solution. This study simulated the actual degradation process of new PLA masks in different environments by soaking them in various solutions for 4 weeks and explored the influence of the treated PLA fabric fibers on the growth of winter ryegrass. The results show that the weathering degradation of PLA fibers in water mainly occurs through the hydrolysis of ester bonds, and weathering leads to cheese-like and gully-like erosion on the surface of the PLA fiber fabric layer and finally to fiber fracture and the release of microplastics (MPs). The average number of MPs released within 4 weeks is 149.5 items/piece, the particle size is 20-500 µm (44%), and 63.57% of the MPs are transparent fibers. The outer, middle, and inner layers of weathered PLA masks tend to be hydrophilic and have lower mechanical strength. PLA fibers after different treatment methods affect the growth of winter ryegrass. PLA masks are undoubtedly a greener choice than ordinary commercial masks, but in order to confirm this, the entire degradation process, the final products, and the impact on the environment need to be further studied. In the future, masks may be developed to be made from more environmentally friendly biodegradable materials that can have good protecting effects and also solve the problem of end-of-life recycling. A SYNOPSIS: Simulation of the actual degradation process of PLA masks and exploration of the influence of mask degradation on the growth of winter ryegrass.
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Affiliation(s)
- Fei Yu
- College of Marine Ecology and Environment, Shanghai Ocean University, No 999, Huchenghuan Road, Shanghai 201306, PR China
| | - Yizhi Pei
- College of Marine Ecology and Environment, Shanghai Ocean University, No 999, Huchenghuan Road, Shanghai 201306, PR China
| | - Xiaochen Zhang
- College of Marine Ecology and Environment, Shanghai Ocean University, No 999, Huchenghuan Road, Shanghai 201306, PR China
| | - Jie Ma
- Research Center for Environmental Functional Materials, College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, PR China.
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5
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Murillo EA. In situ compatibilization of thermoplastic starch/polylactic acid blends using citric acid. Macromol Res 2023. [DOI: 10.1007/s13233-023-00127-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
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6
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Liu X, Guo Q, Ren S, Guo J, Wei C, Chang J, Shen B. Synthesis of starch‐based flocculant by multi‐component grafting copolymerization and its application in oily wastewater treatment. J Appl Polym Sci 2022. [DOI: 10.1002/app.53356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Xiwen Liu
- College of Science China University of Petroleum Beijing China
| | - Qiaoxia Guo
- College of Science China University of Petroleum Beijing China
| | - Shenyong Ren
- State Key Laboratory of Heavy Oil Processing China University of Petroleum Beijing China
| | - Junkang Guo
- College of Science China University of Petroleum Beijing China
| | - Chongbin Wei
- College of Science China University of Petroleum Beijing China
| | - Jiaxin Chang
- College of Science China University of Petroleum Beijing China
| | - Baojian Shen
- State Key Laboratory of Heavy Oil Processing China University of Petroleum Beijing China
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7
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Liu Q, Fu Y, Wu B, Tang J, Wang Y, Wu Y, Zhang M, Shen S, Shen Y, Gao C, Ding J, Zhu L. Imaging moiety-directed co-assembly for biodegradation control with synchronous four-modal biotracking. Biomaterials 2022; 287:121665. [PMID: 35809403 DOI: 10.1016/j.biomaterials.2022.121665] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Revised: 06/25/2022] [Accepted: 06/29/2022] [Indexed: 12/20/2022]
Abstract
The complexity of existing methods for biodegradation control limits the multi-functionality of biomedical materials. It is urgent to develop simple and straightforward strategies to control the biodegradation rate with precise tracking of various parameters in real-time. Here, we show an imaging moiety-directed co-assembly strategy, in which different imaging moieties bearing non-covalent interaction sites are covalently introduced into the poly (D,l-lactic acid) (PDLLA) chain as end groups, followed by alternate non-covalent interactions with polymer chains upon compression molding. This strategy takes advantage of a variety of bonding types (including CH-π, CH-F, etc.) to firmly integrate the PDLLA chains and strongly control the biodegradation rate, making the amorphous prototype degraded much slower than higher-molecular-weight counterparts, and the local inflammatory response is insignificant. On this basis, a synchronous four-modal (X-ray computed tomography + fluorescence + photoacoustics + ultrasound) imaging was achieved on the single entity in vivo, even within a millimeter-scale thick-skin tissue. These imaging signals can precisely correlate the multi parameter variation trend of material mass, volume and molecular weight, signifying that co-assembly can be utilized to develop advanced theranostic systems. SINGLE SENTENCE SUMMARY: We developed an imaging moiety-directed co-assembly strategy to control the biodegradation rate and achieve the synchronization of real-time four-modal imaging in vivo. These imaging signals can precisely correlate the multi-parameter variation trend of material mass, volume and molecular weight, which provided comprehensive biomedical information accessing both qualitatively and quantitatively.
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Affiliation(s)
- Qingsong Liu
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai, 200438, China
| | - Ye Fu
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai, 200438, China
| | - Bin Wu
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai, 200438, China
| | - Jingyu Tang
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai, 200438, China
| | - Yaoben Wang
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai, 200438, China
| | - Yanping Wu
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Jiangsu, Nanjing, 210023, China
| | - Man Zhang
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai, 200438, China
| | - Shen Shen
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai, 200438, China
| | - Yang Shen
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai, 200438, China
| | - Caiyun Gao
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai, 200438, China
| | - Jiandong Ding
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai, 200438, China.
| | - Liangliang Zhu
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai, 200438, China.
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8
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Zamir SS, Fathi B, Ajji A, Robert M, Elkoun S. Biodegradation of modified Starch/Poly Lactic Acid Nanocomposite in Soil. Polym Degrad Stab 2022. [DOI: 10.1016/j.polymdegradstab.2022.109902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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9
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Linghu C, Xie L, Yang L, Li X, Tao Y, Xu Y, Luo Z. Preparation and characterization of maleic anhydride‐based double‐monomer grafted polylactic acid compatibilizer. J Appl Polym Sci 2022. [DOI: 10.1002/app.52234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Changkai Linghu
- College of Materials and Metallurgy Guizhou University Guiyang Guizhou China
| | - Lijin Xie
- College of Materials and Metallurgy Guizhou University Guiyang Guizhou China
| | - Le Yang
- School of Materials and Energy Engineering Guizhou Institute of Technology Guiyang Guizhou China
| | - Xiaolong Li
- Key Laboratory of Material Chemistry for Energy Conversion and Storage of Ministry of Education, School of Chemistry and Chemical Engineering Huazhong University of Science & Technology Wuhan Hubei China
| | - Yao Tao
- College of Materials and Metallurgy Guizhou University Guiyang Guizhou China
| | - Yinhan Xu
- College of Materials and Metallurgy Guizhou University Guiyang Guizhou China
| | - Zhu Luo
- College of Materials and Metallurgy Guizhou University Guiyang Guizhou China
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10
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Gürler N, Paşa S, Temel H. Silane doped biodegradable starch-PLA bilayer films for food packaging applications: Mechanical, thermal, barrier and biodegradability properties. J Taiwan Inst Chem Eng 2021. [DOI: 10.1016/j.jtice.2021.05.030] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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11
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Zhu J, Lu K, Liu H, Bao X, Yang M, Chen L, Yu L. Influence of Moisture Content on Starch Esterification by Solvent‐Free Method. STARCH-STARKE 2021. [DOI: 10.1002/star.202100009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Jian Zhu
- Centre for Polymer from Renewable Resource School of Food Science and Engineering SCUT Guangzhou 510640 China
| | - Kai Lu
- Centre for Polymer from Renewable Resource School of Food Science and Engineering SCUT Guangzhou 510640 China
| | - Hongsheng Liu
- Centre for Polymer from Renewable Resource School of Food Science and Engineering SCUT Guangzhou 510640 China
- Sino‐Singapore International Joint Research Institute Guangzhou Knowledge City Guangzhou 510663 China
| | - Xianyang Bao
- Centre for Polymer from Renewable Resource School of Food Science and Engineering SCUT Guangzhou 510640 China
| | - Mao Yang
- Centre for Polymer from Renewable Resource School of Food Science and Engineering SCUT Guangzhou 510640 China
| | - Ling Chen
- Centre for Polymer from Renewable Resource School of Food Science and Engineering SCUT Guangzhou 510640 China
| | - Long Yu
- Centre for Polymer from Renewable Resource School of Food Science and Engineering SCUT Guangzhou 510640 China
- Sino‐Singapore International Joint Research Institute Guangzhou Knowledge City Guangzhou 510663 China
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12
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Aleksanyan KV, Rogovina SZ, Ivanushkina NE. Novel biodegradable low‐density polyethylene–poly(lactic acid)–starch ternary blends. POLYM ENG SCI 2021. [DOI: 10.1002/pen.25624] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Kristine V. Aleksanyan
- Department of Polymers and Composite Materials Semenov Federal Research Center for Chemical Physics, Russian Academy of Sciences Moscow Russian Federation
| | - Svetlana Z. Rogovina
- Department of Polymers and Composite Materials Semenov Federal Research Center for Chemical Physics, Russian Academy of Sciences Moscow Russian Federation
| | - Natalya E. Ivanushkina
- Department of the All‐Russian Collection of Microorganisms Skryabin Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences Pushchino Moscow oblast Russian Federation
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13
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Recent trends in the application of modified starch in the adsorption of heavy metals from water: A review. Carbohydr Polym 2021; 269:117763. [PMID: 34294282 DOI: 10.1016/j.carbpol.2021.117763] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Revised: 02/02/2021] [Accepted: 02/02/2021] [Indexed: 10/22/2022]
Abstract
The presence of polyfunctional ligands on the bio-macromolecules acts as an efficient adsorbent for heavy metal ions. Starch is one of the most abundant, easily available and cheap biopolymer of plant origin. However, native starch exhibits significantly low adsorption capacity due to the absence of some essential functional groups like carboxyl, amino or ester groups and is thus modified using various reaction routes like grafting, cross-linking, esterification, oxidation and irradiation for addition of functional groups to increase its adsorption capacity. The present review provides a comprehensive discussion on the above mentioned modification schemes of starch over the last 10-15 years highlighting their preparation methods, physico-chemical characteristics along with their adsorption capacities and mechanisms of heavy metal ions from water.
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Mbarki K, Fersi M, Louati I, Elleuch B, Sayari A. Biodegradation study of PDLA/cellulose microfibres biocomposites by Pseudomonas aeruginosa. ENVIRONMENTAL TECHNOLOGY 2021; 42:731-742. [PMID: 31304884 DOI: 10.1080/09593330.2019.1643926] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Accepted: 07/09/2019] [Indexed: 06/10/2023]
Abstract
Aerobic biodegradation of biocomposites has been studied in both solid and liquid media. The research was concentrated on the biodegradation under aerobic and mesophilic conditions using poly-d-lactic acid (PDLA) and PDLA/cellulose microfibres (CMFs) samples as the sole carbon source. To determine the efficiency of the biodegradation, quantitative (mass variations, optical density (OD)) and qualitative (FTIR, NMR and SEM) analyses have been used to follow the polymer changes after degradation. The weight loss and OD of the biocomposites samples PDLA/CMFs were slower than that of pristine PDLA. The PDLA displayed the most important loss of weight (7.09%, 8.95%) compared to its initial weight and the lowest weight loss was detected in PDLA/CMF300 (1.04%, 2.19%) in solid and liquid mediums respectively. Also, the OD value of PDLA was increased from the seven days (0.381) to the last day (0.969). It appears that the major rate-determining factor affecting material degradation was its crystallinity without or with minimal assistance from abiotic factor because crystalline phases inhibit the diffusion of small water molecules. Otherwise, the Pseudomonas aeruginosa was isolated from Mediterranean soil has been found to be a novel candidate to biodegrade PDLA under mesophilic conditions.
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Affiliation(s)
- Khadija Mbarki
- Laboratory of Environmental Engineering and EcoTechnology (LGEET), National School of Engineering of Sfax (ENIS), Sfax University, Sfax, Tunisia
| | - Mariem Fersi
- Unité de Biotechnologie des Algues, National School of Engineers of Sfax, Sfax University, Sfax, Tunisia
| | - Ibtihel Louati
- Laboratory of Enzyme Engineering and Microbiology, National School of Engineers of Sfax, Sfax University, Sfax, Tunisia
| | - Boubaker Elleuch
- Laboratory of Environmental Engineering and EcoTechnology (LGEET), National School of Engineering of Sfax (ENIS), Sfax University, Sfax, Tunisia
| | - Adel Sayari
- Laboratory of Biochemistry and Enzymatic Engineering of Lipases, National School of Engineering of Sfax (ENIS), Sfax University, Sfax, Tunisia
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15
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Zhou X, Cheng R, Wang B, Zeng J, Xu J, Li J, Kang L, Cheng Z, Gao W, Chen K. Biodegradable sandwich-architectured films derived from pea starch and polylactic acid with enhanced shelf-life for fruit preservation. Carbohydr Polym 2021; 251:117117. [PMID: 33142652 DOI: 10.1016/j.carbpol.2020.117117] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 08/21/2020] [Accepted: 09/04/2020] [Indexed: 02/07/2023]
Abstract
The development of biopolymer films is crucial for the replacement of conventional plastics. Tremendous effort is made to improve their performances by introducing biopolymers through the film manufacturing process. Herein, a sandwich-architectured film was proposed to efficiently improve the adhesion between the PS and PLA layers by using octenyl succinic anhydride-modified pea starch (OMPS) layer as the interlayer, leading to a highly mechanically enhanced interpenetrating network. Accordingly, the properties of the films were enhanced due to the synergism effect of sandwich architecture. In particular, the WVP value of the sandwich-architectured films (0.25 ∼ 0.89×10-10g·m-1·s-1·Pa-1) decreased more than 7-fold compared with the OMPS20 film, and the OP value of the sandwich-architectured films (0.256 ∼ 1.229×10-12cm3·m·m-2·s-1·Pa-1) decreased more than 10-fold in comparison to the PLA film. Benefitting from the characteristics investigated above, the films exhibited a favorable effect on strawberry storage. Overall, the fabricated eco-friendly sandwich-architectured films have shown great potential for biodegradable packaging applications.
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Affiliation(s)
- Xiaoming Zhou
- State Key Laboratory of Pulp and Paper Engineering, Plant Fiber Research Center, School of Light Industry and Engineering, South China University of Technology, No.381 Wushan Road, Tianhe District, Guangzhou, 510640, PR China
| | - Rui Cheng
- State Key Laboratory of Pulp and Paper Engineering, Plant Fiber Research Center, School of Light Industry and Engineering, South China University of Technology, No.381 Wushan Road, Tianhe District, Guangzhou, 510640, PR China
| | - Bin Wang
- State Key Laboratory of Pulp and Paper Engineering, Plant Fiber Research Center, School of Light Industry and Engineering, South China University of Technology, No.381 Wushan Road, Tianhe District, Guangzhou, 510640, PR China.
| | - Jinsong Zeng
- State Key Laboratory of Pulp and Paper Engineering, Plant Fiber Research Center, School of Light Industry and Engineering, South China University of Technology, No.381 Wushan Road, Tianhe District, Guangzhou, 510640, PR China.
| | - Jun Xu
- State Key Laboratory of Pulp and Paper Engineering, Plant Fiber Research Center, School of Light Industry and Engineering, South China University of Technology, No.381 Wushan Road, Tianhe District, Guangzhou, 510640, PR China.
| | - Jinpeng Li
- State Key Laboratory of Pulp and Paper Engineering, Plant Fiber Research Center, School of Light Industry and Engineering, South China University of Technology, No.381 Wushan Road, Tianhe District, Guangzhou, 510640, PR China
| | - Lei Kang
- State Key Laboratory of Pulp and Paper Engineering, Plant Fiber Research Center, School of Light Industry and Engineering, South China University of Technology, No.381 Wushan Road, Tianhe District, Guangzhou, 510640, PR China
| | - Zheng Cheng
- State Key Laboratory of Pulp and Paper Engineering, Plant Fiber Research Center, School of Light Industry and Engineering, South China University of Technology, No.381 Wushan Road, Tianhe District, Guangzhou, 510640, PR China
| | - Wenhua Gao
- State Key Laboratory of Pulp and Paper Engineering, Plant Fiber Research Center, School of Light Industry and Engineering, South China University of Technology, No.381 Wushan Road, Tianhe District, Guangzhou, 510640, PR China
| | - Kefu Chen
- State Key Laboratory of Pulp and Paper Engineering, Plant Fiber Research Center, School of Light Industry and Engineering, South China University of Technology, No.381 Wushan Road, Tianhe District, Guangzhou, 510640, PR China
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16
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Khalaj Amnieh S, Mosaddegh P, Mashayekhi M, Kharaziha M. Biodegradation evaluation of poly (lactic acid) for stent application: Role of mechanical tension and temperature. J Appl Polym Sci 2020. [DOI: 10.1002/app.50389] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Sasan Khalaj Amnieh
- Department of Mechanical Engineering Isfahan University of Technology Isfahan Iran
| | - Peiman Mosaddegh
- Department of Mechanical Engineering Isfahan University of Technology Isfahan Iran
| | - Mohammad Mashayekhi
- Department of Mechanical Engineering Isfahan University of Technology Isfahan Iran
| | - Mahshid Kharaziha
- Department of Materials Engineering Isfahan University of Technology Isfahan Iran
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Li M, Dong Q, Xiao Y, Du Q, Huselsteind C, Zhang T, He X, Tian W, Chen Y. A biodegradable soy protein isolate-based waterborne polyurethane composite sponge for implantable tissue engineering. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2020; 31:120. [PMID: 33247777 DOI: 10.1007/s10856-020-06451-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Revised: 06/05/2020] [Accepted: 10/27/2020] [Indexed: 06/12/2023]
Abstract
A biodegradable soy protein isolate-based waterborne polyurethane composite sponge (SWPU) was prepared from soy protein isolate (SPI) and polyurethane prepolymer (PUP) by a process involving chemical reaction and freeze-drying. Effects of SPI content (0, 10%, 30%, 50%, 70%) on the micro-structure and physical properties of the composite sponges were characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM), differential scanning calorimetry (DSC), and thermogravimetric analysis (TGA). The results showed that the reaction between -NCO of PUP and -NH2 of SPI formed porous SPI-based WPU composite sponges. The results of the water absorption ratio measurement, solvent resistance measurement and compressive testing showed that water absorption, hydrophilicity, and tensile strength in the dry state of the composite sponges increased with the increase of SPI content. Especially, the tensile strength ranged from 0.3 MPa to 5.5 MPa with the increase in SPI content. The cytocompatibility and biodegradability of the composite sponges were evaluated by in vitro cell culture and in vivo implantation experiments. The results indicated that a certain SPI content in the sponges could promote the adhesion, growth, and proliferation of cells, enhance the cytocompatibility and accelerate the degradation speed of composite sponges. During the in vivo implanting period within 9 months, SWPU-50 sponge containing 50% of SPI brought out the lowest activated inflammatory reaction, most newly-regenerated blood capillaries, and best histocompatibility. All results indicated that SWPU-50 composite sponges had greatest potential for tissue engineering.
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Affiliation(s)
- Mingming Li
- Department of Biomedical Engineering and Hubei Province Key Laboratory of Allergy and Immune Related Diseases, School of Basic Medical Science, Wuhan University, Wuhan, 430071, China
| | - Qi Dong
- Department of Biomedical Engineering and Hubei Province Key Laboratory of Allergy and Immune Related Diseases, School of Basic Medical Science, Wuhan University, Wuhan, 430071, China
| | - Yao Xiao
- Department of Biochemistry and Molecular Biology, School of Life Science, Hubei University, Wuhan, 430062, China
| | - Qiaoyue Du
- Department of Biomedical Engineering and Hubei Province Key Laboratory of Allergy and Immune Related Diseases, School of Basic Medical Science, Wuhan University, Wuhan, 430071, China
| | - Céline Huselsteind
- CNRS UMR 7561 and FR CNRS-INSERM 32.09 Nancy University, Vandœuvre-lès-Nancy, France
| | - Tianwei Zhang
- Department of Biomedical Engineering and Hubei Province Key Laboratory of Allergy and Immune Related Diseases, School of Basic Medical Science, Wuhan University, Wuhan, 430071, China
| | - Xiaohua He
- Department of Biomedical Engineering and Hubei Province Key Laboratory of Allergy and Immune Related Diseases, School of Basic Medical Science, Wuhan University, Wuhan, 430071, China
| | - Weiqun Tian
- Department of Biomedical Engineering and Hubei Province Key Laboratory of Allergy and Immune Related Diseases, School of Basic Medical Science, Wuhan University, Wuhan, 430071, China.
| | - Yun Chen
- Department of Biomedical Engineering and Hubei Province Key Laboratory of Allergy and Immune Related Diseases, School of Basic Medical Science, Wuhan University, Wuhan, 430071, China.
- Hubei Engineering Center of Natural Polymers-based Medical Materials, Wuhan University, Wuhan, 430071, China.
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18
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Camacho-Muñoz R, Villada-Castillo HS, Solanilla-Duque JF. Anaerobic biodegradation under slurry thermophilic conditions of poly(lactic acid)/starch blend compatibilized by maleic anhydride. Int J Biol Macromol 2020; 163:1859-1865. [DOI: 10.1016/j.ijbiomac.2020.09.183] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 09/15/2020] [Accepted: 09/21/2020] [Indexed: 10/23/2022]
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19
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Li P, He X, Zuo Y, Li X, Wu Y. Synthesis and characterization of lactic acid esterified starch by an in-situ solid phase method. Int J Biol Macromol 2020; 156:1316-1322. [PMID: 31760010 DOI: 10.1016/j.ijbiomac.2019.11.171] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Revised: 11/13/2019] [Accepted: 11/19/2019] [Indexed: 11/15/2022]
Abstract
To improve the hydrophobicity and thermoplastic processability of starch, lactic acid esterified starch (LA-e-starch) was prepared by in-situ solid phase esterification with corn starch as the raw material and LA as the esterifying agent. Fourier transform infrared spectroscopy confirmed that the esterification reaction was successful. The optimal esterification efficiency of LA-e-starch was obtained when the LA proportion was 20% by mass, catalyst ratio at 3%, reaction temperature 80 °C and reaction time 2.5 h. LA-e-starch was characterized by scanning electron microscopy (SEM), contact angle (CA) analysis, X-ray diffractometry (XRD), differential scanning calorimetry (DSC), and thermogravimetric analysis (TGA) as well as its water absorption rate evaluated. Results showed that in-situ solid phase esterification mainly occurred on starch granule surfaces and did not destroy the starch granularity. LA-e-starch surfaces were covered with a layer of polylactic acid resin, which caused starch granules to stick together. The initial contact angle of LA-e-starch was clearly larger than that of native starch and the water absorption rate lower than native starch in a 168 h test time, which showed that esterification effectively improved the hydrophobicity of starch. This esterification destroyed the crystalline structure of starch to some extent, resulting in a crystallinity reduction to 25.16%. In addition, the gelatinization temperature and enthalpy were lower than those of native starch. XRD and DSC analyses indicated that esterification modification increased starch thermoplasticity. Also, LA-e-starch exhibited better thermal stability than native starch, from which it was inferred that this application of esterification could improve the thermoplastic processability of starch modify the interfacial compatibility between starch and polymer resins.
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Affiliation(s)
- Ping Li
- College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha, Hunan 410004, PR China
| | - Xiaoyu He
- College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha, Hunan 410004, PR China
| | - Yingfeng Zuo
- College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha, Hunan 410004, PR China.
| | - Xianjun Li
- College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha, Hunan 410004, PR China
| | - Yiqiang Wu
- College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha, Hunan 410004, PR China.
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20
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The fabrication of bilayer polylactic acid films from cross-linked starch as eco-friendly biodegradable materials: Synthesis, characterization, mechanical and physical properties. Eur Polym J 2020. [DOI: 10.1016/j.eurpolymj.2020.109588] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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21
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Datta D, Halder G. Blending of phthalated starch and surface functionalized rice husk extracted nanosilica with LDPE towards developing an efficient packaging substitute. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:1533-1557. [PMID: 31755061 DOI: 10.1007/s11356-019-06430-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Accepted: 09/04/2019] [Indexed: 06/10/2023]
Abstract
Starch was transformed to hydrophobic starch phthalate (contact angle 109°) in order to achieve a good dispersion in LDPE matrix. Nanosilica derived from rice husk after aminopropyltrimethoxysilane functionalization was also incorporated into the blend as property-enhancing filler. The produced crystalline starch phthalate had a lower particle size of 9.87 μm and a higher surface area of 2.87 m2/g compared to starch (40.28 μm, 1.91 m2/g). The potential quality modification of starch phthalate as a substitute for starch towards the production of a perfect biodegradable blend was quantified in terms of mechanical (tensile, tear, stiffness), optical (haze, transmittance), and biodegradation assessments. Interfacial adhesion between LDPE and starch phthalate was well justified by the morphology and enhancement in mechanical properties like tensile and tear strength from 8.87 to 12.67 MPa and 96.57 to 187.10 N/mm for 30% of starch or starch phthalate in LDPE matrix, respectively. Starch phthalate compared to starch blended films showed a higher biodegradation rate of 14.8 and 13.5% in garden soil and vegetable waste respectively in 1 year (at 30% biofiller), with a good first-order kinetics fit of the weight loss data having a higher degradation rate constant at higher content of biofiller in the blend.
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Affiliation(s)
- Deepshikha Datta
- Department of Chemical Engineering, National Institute of Technology, Durgapur, 713209, India
- Department of Polymer Science, Central Institute of Plastic Engineering and Technology, Bhubaneswar, 751024, India
| | - Gopinath Halder
- Department of Chemical Engineering, National Institute of Technology, Durgapur, 713209, India.
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22
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Spiridon I, Anghel NC, Darie-Nita RN, Iwańczuk A, Ursu RG, Spiridon IA. New composites based on starch/Ecoflex®/biomass wastes: Mechanical, thermal, morphological and antimicrobial properties. Int J Biol Macromol 2019; 156:1435-1444. [PMID: 31770560 DOI: 10.1016/j.ijbiomac.2019.11.185] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2019] [Revised: 11/17/2019] [Accepted: 11/21/2019] [Indexed: 12/17/2022]
Abstract
Different biomass wastes were successfully blended with starch and Ecoflex® viz. poly(butylene adipate-co-terephthalate), without glycerol addition, to obtain biocomposite materials. The mechanical properties, as well as thermal and surface properties, of the developed composites were evaluated. It was found that the tensile strength and impact strength improved upon the addition of lignin, while the water uptake capacity decreased. The presence of 5% lignin determined an increase in tensile strength of 125.4% for materials comprising celery (CEL), 109.6% for materials comprising poplar seed hair fibers (PSH), 92.9% for materials comprising pomace (POM) and 127.7% for materials comprising Asclepias syriaca fibers (ASF), compared with a reference sample. The addition of lignin to all the formulations conferred good antimicrobial properties against different microorganisms, S. aureus and especially E. coli. The good mechanical properties, water resistance and antimicrobial activity against pathogens recommend these composites to be used in the manufacture of packaging materials.
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Affiliation(s)
- Iuliana Spiridon
- "Petru Poni" Institute of Macromolecular Chemistry, Grigore Ghica Voda Alley no. 41, 700487 Iasi, Romania
| | - Narcis Catalin Anghel
- "Petru Poni" Institute of Macromolecular Chemistry, Grigore Ghica Voda Alley no. 41, 700487 Iasi, Romania.
| | - Raluca Nicoleta Darie-Nita
- "Petru Poni" Institute of Macromolecular Chemistry, Grigore Ghica Voda Alley no. 41, 700487 Iasi, Romania
| | - Andrzej Iwańczuk
- Faculty of Environmental Engineering, Wroclaw University of Technology, Wroclaw, Poland
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23
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Zhou X, Yang R, Wang B, Chen K. Development and characterization of bilayer films based on pea starch/polylactic acid and use in the cherry tomatoes packaging. Carbohydr Polym 2019; 222:114912. [PMID: 31320083 DOI: 10.1016/j.carbpol.2019.05.042] [Citation(s) in RCA: 59] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2019] [Revised: 05/10/2019] [Accepted: 05/11/2019] [Indexed: 11/29/2022]
Abstract
Renewable and biodegradable packaging materials are desired for numerous applications. Pea starch (PS) and polylactic acid (PLA) are promising alternatives to petrochemical-based polymers except that their phase separation causes poor mechanical properties. To surmount this problem, PS/PLA films with a double-layer structure were designed. The bilayer films displayed better toughness, thermal stability and barrier capacity over those of PLA films. The incorporation of PLA on a PS layer increased water resistance and tensile strength over those of a monolayer PS film. Weak interfacial adhesion between the PS and PLA layers was revealed by Fourier transform infrared spectroscopy and scanning electron microscopy. The bilayer films reduced weight loss ratio of cherry tomatoes and extended the retention of organic acids and vitamin C. A bilayer architecture represents a promising route to develop packaging materials that display the advantageous properties of each material layer.
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Affiliation(s)
- Xiaoming Zhou
- State Key Laboratory of Pulp and Paper Engineering, Plant Micro/Nano Fiber Research Center, School of Light Industry and Engineering, South China University of Technology, Guangzhou, 516640, China
| | - Rendang Yang
- State Key Laboratory of Pulp and Paper Engineering, Plant Micro/Nano Fiber Research Center, School of Light Industry and Engineering, South China University of Technology, Guangzhou, 516640, China.
| | - Bin Wang
- State Key Laboratory of Pulp and Paper Engineering, Plant Micro/Nano Fiber Research Center, School of Light Industry and Engineering, South China University of Technology, Guangzhou, 516640, China.
| | - Kefu Chen
- State Key Laboratory of Pulp and Paper Engineering, Plant Micro/Nano Fiber Research Center, School of Light Industry and Engineering, South China University of Technology, Guangzhou, 516640, China
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24
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Poly (Lactic Acid)/Thermoplastic Starch Films: Effect of Cardoon Seed Epoxidized Oil on Their Chemicophysical, Mechanical, and Barrier Properties. COATINGS 2019. [DOI: 10.3390/coatings9090574] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
In this work, biodegradable films based on poly (lactic acid) (PLA) and corn thermoplastic starch (TPS), additivated with epoxidized cardoon oil plasticizer (ECO) at 3% by weight with respect to PLA mass fraction, were prepared by melt extrusion process and compression molding. The effect of ECO on structural, thermal, mechanical, barrier, and spectral optical properties of the films was investigated. Spectroscopic analysis evidenced the development of physical interaction between oil and polymers, mainly PLA. In addition, no oil migration occurrence was detected after six months of film preparation, as evidenced by oil mass evaluation by precipitation as well as by 1H-NMR methods, thus highlighting the good inclusion of oil inside the polymeric network. The plasticizing action of the oil induced a lean improvement of the interfacial adhesion between hydrophobic PLA and hydrophilic TPS, particularly accentuated in PLA80_ECO composition, as evidenced by morphological analysis of blend fracture surfaces. TGA data underlined that, differently from TPS-based films, PLA-based systems followed one degradative thermal profile suggesting a slight compatibilization effect of epoxidized oil in these films. The shifting of Tg values, by differential scanning calorimetry (DSC) analysis, indicated a weak miscibility at molecular level. Generally, in the investigated blends, the phase separation between PLA and TPS polymers was responsible for the mechanical properties failing; in particular, the tensile strength evidenced a negative deviation from the rule of mixtures, particularly marked in TPS-based blends, where no physical entanglements occurred between the polymers since their immiscibility even in presence of ECO. The epoxidized oil strongly improved the barrier properties (water vapor permeability (WVP) and oxygen permeability (O2P)) of all the films, likely developing a physical barrier to water and oxygen diffusion and solubilization. With respect to neat PLA, PL80 and PL80_ECO films evidenced the improvement of surface wettability, due to the presence of polar groups both in TPS (hydroxyl residues) and in epoxidized oil (oxirane rings). Finally, following to the conditioning in climatic chamber at T = 25 °C and RH = 50%, PLA80 film became opaque due to TPS water absorption, causing a light transmittance decreasing, as evidenced by spectral optical analysis.
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25
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Crystallization, thermal stability, barrier property, and aging resistance application of multi-functionalized graphene oxide/poly(lactide)/starch nanocomposites. Int J Biol Macromol 2019; 132:1208-1220. [DOI: 10.1016/j.ijbiomac.2019.03.183] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2019] [Revised: 03/07/2019] [Accepted: 03/25/2019] [Indexed: 01/17/2023]
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26
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Advances in chemical modifications of starches and their applications. Carbohydr Res 2019; 476:12-35. [DOI: 10.1016/j.carres.2019.02.007] [Citation(s) in RCA: 83] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2018] [Revised: 02/10/2019] [Accepted: 02/25/2019] [Indexed: 11/23/2022]
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27
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A review on blending of corn starch with natural and synthetic polymers, and inorganic nanoparticles with mathematical modeling. Int J Biol Macromol 2019; 122:969-996. [DOI: 10.1016/j.ijbiomac.2018.10.092] [Citation(s) in RCA: 83] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Revised: 10/02/2018] [Accepted: 10/14/2018] [Indexed: 01/30/2023]
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28
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Poly (lactic acid) blends: Processing, properties and applications. Int J Biol Macromol 2018; 125:307-360. [PMID: 30528997 DOI: 10.1016/j.ijbiomac.2018.12.002] [Citation(s) in RCA: 269] [Impact Index Per Article: 44.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2018] [Revised: 11/29/2018] [Accepted: 12/01/2018] [Indexed: 11/21/2022]
Abstract
Poly (lactic acid) or polylactide (PLA) is a commercial biobased, biodegradable, biocompatible, compostable and non-toxic polymer that has competitive material and processing costs and desirable mechanical properties. Thereby, it can be considered favorably for biomedical applications and as the most promising substitute for petroleum-based polymers in a wide range of commodity and engineering applications. However, PLA has some significant shortcomings such as low melt strength, slow crystallization rate, poor processability, high brittleness, low toughness, and low service temperature, which limit its applications. To overcome these limitations, blending PLA with other polymers is an inexpensive approach that could also tailor the final properties of PLA-based products. During the last two decades, researchers investigated the synthesis, processing, properties, and development of various PLA-based blend systems including miscible blends of poly l-lactide (PLLA) and poly d-lactide (PDLA), which generate stereocomplex crystals, binary immiscible/miscible blends of PLA with other thermoplastics, multifunctional ternary blends using a third polymer or fillers such as nanoparticles, as well as PLA-based blend foam systems. This article reviews all these investigations and compares the syntheses/processing-morphology-properties interrelationships in PLA-based blends developed so far for various applications.
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29
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Soil burial-induced chemical and thermal changes in starch/poly (lactic acid) composites. Int J Biol Macromol 2018; 113:338-344. [DOI: 10.1016/j.ijbiomac.2018.02.139] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2018] [Revised: 02/13/2018] [Accepted: 02/22/2018] [Indexed: 11/22/2022]
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30
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Tang H, Qu Y, Li Y, Dong S. Surface Modification Mechanism of Cross-Linking and Acetylation, and Their Influence on Characteristics of High Amylose Corn Starch. J Food Sci 2018; 83:1533-1541. [PMID: 29802747 DOI: 10.1111/1750-3841.14161] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2017] [Revised: 03/09/2018] [Accepted: 03/19/2018] [Indexed: 11/26/2022]
Abstract
Through dual modification of high amylose corn starch (HACS), the surface modification mechanism of cross-linking and acetylation was mainly studied, and their effect on the physicochemical properties of HACS was further investigated. The variation in surface hydroxyl numbers showed that the influence of acetylation on the structure of particles was obviously different from cross-linking. Cross-linking was carried out only on the granule surface, whereas acetylation was finished not only on the surface but also in the interior of grains. Cross-linking could unevenly produce many micropores on the particle surface. The destruction level of HACS granules caused by acetylation was greater than that of cross-linking according to XRD. The surface hydroxyl groups were not distributed evenly on HACS particles. Cross-linking did not improve the freeze-thaw stability of HACS, but acetylation could improve its freeze-thaw stability. The variation in the blue value caused by cross-linking was more than by acetylation. PRACTICAL APPLICATION The surface modification mechanism of cross-linking and acetylation will provide the theoretical basis for industrial production of cross-linked starch, acetylated starch, and cross-linked acetylated starch. For the surface modification, the cross-linking degree was better evaluated by the surface hydroxyl group numbers than the conventional sedimentation volume method. The development of cross-linked acetylated high amylose corn starch as a new additive will further enlarge the application of high amylose corn starch in food, textile, medicine, and so on.
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Affiliation(s)
- Hongbo Tang
- Science School, Shenyang Univ. of Technology, Shenyang, 110870, China
| | - Yefang Qu
- Science School, Shenyang Univ. of Technology, Shenyang, 110870, China
| | - Yanping Li
- Science School, Shenyang Univ. of Technology, Shenyang, 110870, China
| | - Siqing Dong
- Science School, Shenyang Univ. of Technology, Shenyang, 110870, China
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31
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Investigation the effect of graphene oxide and gelatin/starch weight ratio on the properties of starch/gelatin/GO nanocomposite films: The RSM study. Int J Biol Macromol 2018; 109:1019-1028. [DOI: 10.1016/j.ijbiomac.2017.11.083] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Revised: 11/12/2017] [Accepted: 11/13/2017] [Indexed: 12/21/2022]
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32
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Clasen SH, Müller CM, Parize AL, Pires AT. Synthesis and characterization of cassava starch with maleic acid derivatives by etherification reaction. Carbohydr Polym 2018; 180:348-353. [DOI: 10.1016/j.carbpol.2017.10.016] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2017] [Revised: 10/02/2017] [Accepted: 10/03/2017] [Indexed: 01/17/2023]
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33
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Biodegradation behavior and modelling of soil burial effect on degradation rate of PLA blended with starch and wood flour. Colloids Surf B Biointerfaces 2017; 159:800-808. [DOI: 10.1016/j.colsurfb.2017.08.056] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2017] [Accepted: 08/28/2017] [Indexed: 11/18/2022]
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34
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Khan B, Bilal Khan Niazi M, Samin G, Jahan Z. Thermoplastic Starch: A Possible Biodegradable Food Packaging Material-A Review. J FOOD PROCESS ENG 2016. [DOI: 10.1111/jfpe.12447] [Citation(s) in RCA: 136] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Bahram Khan
- Department of Chemical Engineering, School of Chemical and Materials Engineering; National University of Sciences and Technology; Islamabad Pakistan
| | - Muhammad Bilal Khan Niazi
- Department of Chemical Engineering, School of Chemical and Materials Engineering; National University of Sciences and Technology; Islamabad Pakistan
| | - Ghufrana Samin
- Department of Chemistry; University of Engineering and Technology Lahore, Faisalabad Campus; Pakistan
| | - Zaib Jahan
- Department of Chemical Engineering, School of Chemical and Materials Engineering; National University of Sciences and Technology; Islamabad Pakistan
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35
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Lipsa R, Tudorachi N, Darie-Nita RN, Oprică L, Vasile C, Chiriac A. Biodegradation of poly(lactic acid) and some of its based systems with Trichoderma viride. Int J Biol Macromol 2016; 88:515-26. [PMID: 27064086 DOI: 10.1016/j.ijbiomac.2016.04.017] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2016] [Revised: 03/21/2016] [Accepted: 04/06/2016] [Indexed: 11/16/2022]
Abstract
The purpose of this study was to assess the biodegradation of poly(lactic acid) (PLA) and some plasticized PLA based systems by Trichoderma viride fungus, in liquid medium and controlled laboratory conditions. The studied systems were achieved using PLA, hydrolyzed collagen (HC) as biological macromolecules and other additives by melt processing procedure. PLA and the systems' biodegradability was examined by the weight losses of the samples (after 7 and 21 days of exposure) and FTIR-ATR, GPC, SEM analyses (after 21 fungus inoculation days). The thermogravimetry (TG-DTG) study showed that the thermostability of the samples decreased after biodegradation and was influenced by the chemical structure of the systems' components.
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Affiliation(s)
- Rodica Lipsa
- "Petru Poni" Institute of Macromolecular Chemistry, 41A, Grigore Ghica Voda Alley, Iasi 700487, Romania
| | - Nita Tudorachi
- "Petru Poni" Institute of Macromolecular Chemistry, 41A, Grigore Ghica Voda Alley, Iasi 700487, Romania.
| | | | - Lacramioara Oprică
- Biology Faculty, Alexandru Ioan Cuza University, 11, Carol I Boulevard, Iasi, 700506, Romania
| | - Cornelia Vasile
- "Petru Poni" Institute of Macromolecular Chemistry, 41A, Grigore Ghica Voda Alley, Iasi 700487, Romania
| | - Aurica Chiriac
- "Petru Poni" Institute of Macromolecular Chemistry, 41A, Grigore Ghica Voda Alley, Iasi 700487, Romania
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36
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Li M, Xiao Y, Chen Y, Ni H, Cai J, Wang X, Chang PR, Anderson DP, Chen Y. Soy protein-modified waterborne polyurethane biocomposites with improved functionality. RSC Adv 2016. [DOI: 10.1039/c5ra25758a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Soy protein isolate-modified waterborne polyurethane biocomposites exhibited improved cytocompatibility and biodegradability.
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Affiliation(s)
- Mingming Li
- Department of Biomedical Engineering
- School of Basic Medical Science
- Wuhan University
- Wuhan 430071
- China
| | - Yao Xiao
- Department of Biochemistry and Molecular Biology
- School of Life Science
- Hubei University
- Wuhan 430062
- China
| | - Yan Chen
- Department of Biomedical Engineering
- School of Basic Medical Science
- Wuhan University
- Wuhan 430071
- China
| | - Hong Ni
- Department of Biochemistry and Molecular Biology
- School of Life Science
- Hubei University
- Wuhan 430062
- China
| | - Jie Cai
- Department of Chemistry
- School of Chemistry and Molecular Science
- Wuhan University
- Wuhan 430072
- China
| | - Xiaomei Wang
- Department of Biomedical Engineering
- School of Basic Medical Science
- Wuhan University
- Wuhan 430071
- China
| | - Peter R. Chang
- Bioproducts and Bioprocesses National Science Program
- Agriculture and Agri-Food Canada
- Saskatoon
- Canada
| | - Debbie P. Anderson
- Bioproducts and Bioprocesses National Science Program
- Agriculture and Agri-Food Canada
- Saskatoon
- Canada
| | - Yun Chen
- Department of Biomedical Engineering
- School of Basic Medical Science
- Wuhan University
- Wuhan 430071
- China
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Haroon M, Wang L, Yu H, Abbasi NM, Zain-ul-Abdin ZUA, Saleem M, Khan RU, Ullah RS, Chen Q, Wu J. Chemical modification of starch and its application as an adsorbent material. RSC Adv 2016. [DOI: 10.1039/c6ra16795k] [Citation(s) in RCA: 96] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Starch is a biopolymer of plant origin which is cheap, abundant and has many applications in food and non-food industries.
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Arjmandi R, Hassan A, Haafiz M, Zakaria Z, Islam MS. Effect of hydrolysed cellulose nanowhiskers on properties of montmorillonite/polylactic acid nanocomposites. Int J Biol Macromol 2016; 82:998-1010. [DOI: 10.1016/j.ijbiomac.2015.11.028] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2015] [Revised: 10/19/2015] [Accepted: 11/12/2015] [Indexed: 11/27/2022]
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Arjmandi R, Hassan A, Mohamad Haafiz MK, Zakaria Z. Partial replacement effect of montmorillonite with cellulose nanowhiskers on polylactic acid nanocomposites. Int J Biol Macromol 2015; 81:91-9. [PMID: 26234577 DOI: 10.1016/j.ijbiomac.2015.07.062] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2015] [Accepted: 07/29/2015] [Indexed: 10/23/2022]
Abstract
In this study, hybrid montmorillonite/cellulose nanowhiskers (MMT/CNW) reinforced polylactic acid (PLA) nanocomposites were produced through solution casting. The CNW filler was first isolated from microcrystalline cellulose by chemical swelling technique. The partial replacement of MMT with CNW in order to produce PLA/MMT/CNW hybrid nanocomposites was performed at 5 parts per hundred parts of polymer (phr) fillers content, based on highest tensile strength values as reported in our previous study. MMT were partially replaced with various amounts of CNW (1, 2, 3, 4 and 5phr). The tensile, thermal, morphological and biodegradability properties of PLA hybrid nanocomposites were investigated. The highest tensile strength of hybrid nanocomposites was obtained with the combination of 4phr MMT and 1phr CNW. Interestingly, the ductility of hybrid nanocomposites increased significantly by 79% at this formulation. The Young's modulus increased linearly with increasing CNW content. Thermogravimetric analysis illustrated that the partial replacement of MMT with CNW filler enhanced the thermal stability of the PLA. This is due to the relatively good dispersion of fillers in the hybrid nanocomposites samples as revealed by transmission electron microscopy. Interestingly, partial replacements of MMT with CNW improved the biodegradability of hybrid nanocomposites compared to PLA/MMT and neat PLA.
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Affiliation(s)
- Reza Arjmandi
- Department of Polymer Engineering, Faculty of Chemical Engineering, Universiti Teknologi Malaysia, Skudai UTM, Johor 81310, Malaysia
| | - Azman Hassan
- Department of Polymer Engineering, Faculty of Chemical Engineering, Universiti Teknologi Malaysia, Skudai UTM, Johor 81310, Malaysia.
| | - M K Mohamad Haafiz
- School of Industrial Technology, Universiti Sains Malaysia, 11800 Penang, Malaysia.
| | - Zainoha Zakaria
- Faculty of Science, Universiti Teknologi Malaysia, UTM Skudai, Johor 81310, Malaysia
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Yin JX, Wei Z, Xu JJ, Sun ZQ. In vivo pharmacokinetic and tissue distribution investigation of sustained-release cisplatin implants in the normal esophageal submucosa of 12 beagle dogs. Cancer Chemother Pharmacol 2015; 76:525-36. [PMID: 26183605 DOI: 10.1007/s00280-015-2823-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2015] [Accepted: 07/08/2015] [Indexed: 12/15/2022]
Abstract
PURPOSE The aim of this study was to clarify the pharmacokinetic, tissue distribution, hematologic, and histopathologic characteristics of sustained-release cisplatin from implants [CDDP-nanoparticle (NP) implants]. METHODS Eighteen dogs (six hybrids and twelve beagles) were divided into three groups. In Group A, the six hybrid dogs were intravenously administered 20 mg CDDP via a hind limb vein. In Groups B and C, CDDP-NP implants containing CDDP doses of 40 and 60 mg, respectively, were embedded into the esophageal submucosa of beagles via painless gastroscopy with an endoscopic booster. Graphite frameless atomic absorption spectrophotometry was used to measure total platinum in plasma and tissues at various timepoints. In addition, free platinum levels in Group B were determined using inductively coupled plasma mass spectrometry. Toxicologic evaluation was also conducted. RESULTS Pharmacokinetic results indicated that the CDDP-NP implant could achieve a smooth pharmacokinetic curve, with the plasma invalid concentration reached after almost 480 h, which is approximately ten times longer than that of standard CDDP (48 h). The peak time, peak concentration, clearance, elimination half-life, area under the curve, volume of distribution at steady state, and mean residence time of Groups B and C were 494 and 211, 0.39 and 0.42, 0.044 and 0.059, 80.11 and 87.70, 44 and 49, 38.8 and 57.9, and 12.29 and 12.39 times those of Group A, respectively (all P < 0.05). The ratio of free/total platinum concentration was 2.0-3.1% in plasma, 14.2% in liver tissue, and 14.3% in kidney tissue. Tissue distribution studies showed that the highest platinum concentrations were found in the esophagus, followed by the kidney and liver. Compared with pre-implantation (day 0), there were no significant differences in most hematological indicators in Groups B and C (P > 0.05). Furthermore, histopathologic examination of the kidneys of dogs from Group C revealed no significant kidney damage. Unlike the intravenous CDDP group (Group A), no animals in the implantation groups showed any clinical signs of toxicity. CONCLUSION CDDP-NP implants can be used to achieve a smooth pharmacokinetic curve and higher drug concentration, as well as a longer mean residence time at the implantation site, with reduced side effects compared with intravenous CDDP.
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Affiliation(s)
- Jia-Xue Yin
- Department of Gastroenterology, Jinan Military General Hospital, No 25 Shifan Road, Tianqiao District, Jinan, 250031, Shandong Province, China
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