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Design and Development of Enhanced Antimicrobial Breathable Biodegradable Polymeric Films for Food Packaging Applications. Polymers (Basel) 2021; 13:polym13203527. [PMID: 34685286 PMCID: PMC8541126 DOI: 10.3390/polym13203527] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 09/24/2021] [Accepted: 09/28/2021] [Indexed: 11/17/2022] Open
Abstract
The principle of breathable food packaging is to provide the optimal number of pores to transfer a sufficient amount of fresh air into the packaging headspace. In this work, antimicrobial microporous eco-friendly polymeric membranes were developed for food packaging. Polylactic acid (PLA) and polycaprolactone (PCL) were chosen as the main packaging polymers for their biodegradability. To develop the microporous films, sodium chloride (NaCl) and polyethylene oxide (PEO) were used as porogenic agents and the membranes were prepared using solvent-casting techniques. The results showed that films with of 50% NaCl and 10% PEO by mass achieved the highest air permeability and oxygen transmission rate (O2TR) with PLA. Meanwhile, blends of 20% PLA and 80% PCL by mass showed the highest air permeability and O2TR at 100% NaCl composition. The microporous membranes were also coated with cinnamaldehyde, a natural antimicrobial ingredient, to avoid the transportation of pathogens through the membranes into the packaged foods. In vitro analysis showed that the biodegradable membranes were not only environmentally friendly but also allowed for maximum food protection through the transportation of sterile fresh air, making them ideal for food packaging applications.
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Hendrawan S, Bono E, Hutter A, Weber U, Lheman J, Baer HU. Evaluation of 3D PLLA scaffolds coated with nano-thick collagen as carrier for hepatocytes. J Biomed Mater Res B Appl Biomater 2020; 109:723-732. [PMID: 33063448 DOI: 10.1002/jbm.b.34738] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2020] [Revised: 09/09/2020] [Accepted: 09/30/2020] [Indexed: 12/30/2022]
Abstract
Orthotopic liver transplantation is presently the most effectual method for the treatment of end-stage liver diseases. Though, one major issue is the restricted number of donor organs that are accessible. Hence, liver tissue engineering is under investigation with the goal of restoring liver functions. In this study, we investigated 3D porous scaffolds made of PLLA coated with a nano thick collagen layer (matrices). Primary rat dermal fibroblasts were used in a first study phase to check matrices' cytocompatibility. More than 70% of seeded cells could adhere and remain viable 24 and 48 hours after the seeding. To test the suitability of the matrices for human primary hepatocytes, HepaRG cells were seeded and analyzed for viability, adhesion rate, and functionality such as albumin secretion. About 80% of seeded HepaRG adhered to the scaffolds remaining viable up to 72 hours. Cells were homogeneously distributed in the entire scaffold with albumin secretion increasing with time. Our results indicate that PLLA collagen-coated matrices allow hepatocytes attachment and distribution throughout the 3D structure, as well as support cell functionality. Such matrices have been applied in our clinical phase II trial. Functional hepatocytes were successfully implanted in patients suffering from liver-cirrhosis with higher cell numbers and adhesions rate compared to our previous trial with the first matrix type and a general improvement in clinical condition.
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Affiliation(s)
- Siufui Hendrawan
- Department of Biochemistry and Molecular Biology, Faculty of Medicine, Tarumanagara University, Jakarta, Indonesia.,Tarumanagara Human Cell Technology Laboratory, Jakarta, Indonesia
| | - Epifania Bono
- Zürich University of Applied Sciences, Institute of Chemistry and Biotechnology, Wädenswil, Switzerland
| | - Albert Hutter
- Zürich University of Applied Sciences, Institute of Chemistry and Biotechnology, Wädenswil, Switzerland
| | - Ursula Weber
- Tarumanagara Human Cell Technology Laboratory, Jakarta, Indonesia.,Baermed, Centre of Abdominal Surgery, Hirslanden Clinic, Zürich, Switzerland.,Department of Visceral and Transplantation Surgery, University of Bern, Bern, Switzerland
| | - Jennifer Lheman
- Tarumanagara Human Cell Technology Laboratory, Jakarta, Indonesia
| | - Hans U Baer
- Baermed, Centre of Abdominal Surgery, Hirslanden Clinic, Zürich, Switzerland.,Department of Visceral and Transplantation Surgery, University of Bern, Bern, Switzerland.,Rumah Sakit Gading Pluit, Jakarta, Indonesia
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Wang YF, Barrera CM, Dauer EA, Gu W, Andreopoulos F, Huang CYC. Systematic characterization of porosity and mass transport and mechanical properties of porous polyurethane scaffolds. J Mech Behav Biomed Mater 2017; 65:657-664. [DOI: 10.1016/j.jmbbm.2016.09.029] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2016] [Revised: 09/12/2016] [Accepted: 09/22/2016] [Indexed: 01/23/2023]
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Effect of CO2 plasma exposure on physico-chemical properties of porous polycaprolactone scaffold. Polym Bull (Berl) 2015. [DOI: 10.1007/s00289-015-1582-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Shi W, Gu C, Jiang H, Zhang M, Lang M. Effects of amphiphilic chitosan-g-poly(ε-caprolactone) polymer additives on paclitaxel release from drug eluting implants. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 45:502-9. [DOI: 10.1016/j.msec.2014.09.020] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2014] [Revised: 08/20/2014] [Accepted: 09/11/2014] [Indexed: 01/22/2023]
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Liang SH, Chen KF, Wu CS, Lin YH, Kao CM. Development of KMnO(4)-releasing composites for in situ chemical oxidation of TCE-contaminated groundwater. WATER RESEARCH 2014; 54:149-158. [PMID: 24568784 DOI: 10.1016/j.watres.2014.01.068] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2013] [Revised: 01/28/2014] [Accepted: 01/30/2014] [Indexed: 06/03/2023]
Abstract
The objective of this study was to develop a controlled-oxidant-release technology combining in situ chemical oxidation (ISCO) and permeable reactive barrier (PRB) concepts to remediate trichloroethene (TCE)-contaminated groundwater. In this study, a potassium permanganate (KMnO4)-releasing composite (PRC) was designed for KMnO4 release. The components of this PRC included polycaprolactone (PCL), KMnO4, and starch with a weight ratio of 1.14:2:0.96. Approximately 64% (w/w) of the KMnO4 was released from the PRC after 76 days of operation in a batch system. The results indicate that the released KMnO4 could oxidize TCE effectively. The results from a column study show that the KMnO4 released from 200 g of PRC could effectively remediate 101 pore volumes (PV) of TCE-contaminated groundwater (initial TCE concentration = 0.5 mg/L) and achieve up to 95% TCE removal. The effectiveness of the PRC system was verified by the following characteristics of the effluents collected after the PRC columns (barrier): (1) decreased TCE concentrations, (2) increased ORP and pH values, and (3) increased MnO2 and KMnO4 concentrations. The results of environmental scanning electron microscope (ESEM) analysis show that the PCL and starch completely filled up the pore spaces of the PRC, creating a composite with low porosity. Secondary micro-scale capillary permeability causes the KMnO4 release, mainly through a reaction-diffusion mechanism. The PRC developed could be used as an ISCO-based passive barrier system for plume control, and it has the potential to become a cost-effective alternative for the remediation of chlorinated solvent-contaminated groundwater.
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Affiliation(s)
- S H Liang
- Taiwan VCM Co., Kaohsiung 832, Taiwan
| | - K F Chen
- Department of Civil Engineering, National Chi Nan University, Nantou County, Taiwan
| | - C S Wu
- Department of Chemical and Biochemical Engineering, Kao Yuan University, Kaohsiung, Taiwan
| | - Y H Lin
- Department of Chemical and Biochemical Engineering, Kao Yuan University, Kaohsiung, Taiwan
| | - C M Kao
- Institute of Environmental Engineering, National Sun Yat-Sen University, Kaohsiung 804, Taiwan.
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Cho YS, Hong MW, Kim YY, Cho YS. Assessment of cell proliferation in salt-leaching using powder (SLUP) scaffolds with penetrated macro-pores. J Appl Polym Sci 2013. [DOI: 10.1002/app.40240] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Yong Sang Cho
- Division of Mechanical and Automotive Engineering; College of Engineering, Wonkwang University; Iksan Jeonbuk 570-749 Republic of Korea
| | - Myoung Wha Hong
- Daejeon St. Mary's Hospital, Catholic University of Korea; Republic of Korea
| | - Young Yul Kim
- Daejeon St. Mary's Hospital, Catholic University of Korea; Republic of Korea
| | - Young-Sam Cho
- Division of Mechanical and Automotive Engineering; College of Engineering, Wonkwang University; Iksan Jeonbuk 570-749 Republic of Korea
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