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In vitro biodegradation of polyester-based plastic materials by selected bacterial cultures

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Abstract
A simple and rapid in vitro test was designed for the assessment of the biodegradation of polyester-based plastics by selected biodegrading bacterial strains. Variovorax paradoxus LMG 16137 was used for the degradation of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) and Acidovorax avenae subsp. avenae LMG 17238 for the synthetic-based polyesters poly(epsilon -caprolactone) (PCL), poly(butylene succinate-co-butylene adipate), and a starch-PCL blend. Degradation by the bacteria was studied in liquid medium with the plastics (films, granules, and injection-molded test bars) as sole sources of carbon. Degradation was followed through gravimetry, growth of the culture, and tensile testing. The effects of incubation time, inoculum density, aeration, incubation temperature, and pH of the medium on the mass loss were investigated and conditions optimized. The test allowed to obtain reproducible results on the mass loss of plastic samples in less than 3 weeks and yielded excellent partially degraded samples for further analysis.
Keywords
Variovorax paradoxus, Acidovorax avenae subsp avenae, poly(3-hydroxybutyrate-co-3-hydroxyvalerate), poly(epsilon-caprolactone), poly(butylene succinate-co-butylene adipate), in vitro biodegradation, POLY(3-HYDROXYBUTYRATE) DEPOLYMERASE, MICROBIAL-DEGRADATION, ANAEROBIC BACTERIUM, CELLULOSE-ACETATE, POLY(3-HYDROXYBUTYRATE-CO-3-HYDROXYVALERATE), SLUDGE, POLY(3-HYDROXYALKANOATES), POLYHYDROXYALKANOATES, PURIFICATION, ACIDOVORAX

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Citation

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MLA
Mergaert, Joris, et al. “In Vitro Biodegradation of Polyester-Based Plastic Materials by Selected Bacterial Cultures.” JOURNAL OF POLYMERS AND THE ENVIRONMENT, vol. 8, no. 1, 2000, pp. 17–27.
APA
Mergaert, J., Ruffieux, K., Bourban, C., Storms, V., Wagemans, W., Wintermantel, E., & Swings, J. (2000). In vitro biodegradation of polyester-based plastic materials by selected bacterial cultures. JOURNAL OF POLYMERS AND THE ENVIRONMENT, 8(1), 17–27.
Chicago author-date
Mergaert, Joris, Kurt Ruffieux, Christophe Bourban, Virginie Storms, Wim Wagemans, Erich Wintermantel, and Jean Swings. 2000. “In Vitro Biodegradation of Polyester-Based Plastic Materials by Selected Bacterial Cultures.” JOURNAL OF POLYMERS AND THE ENVIRONMENT 8 (1): 17–27.
Chicago author-date (all authors)
Mergaert, Joris, Kurt Ruffieux, Christophe Bourban, Virginie Storms, Wim Wagemans, Erich Wintermantel, and Jean Swings. 2000. “In Vitro Biodegradation of Polyester-Based Plastic Materials by Selected Bacterial Cultures.” JOURNAL OF POLYMERS AND THE ENVIRONMENT 8 (1): 17–27.
Vancouver
1.
Mergaert J, Ruffieux K, Bourban C, Storms V, Wagemans W, Wintermantel E, et al. In vitro biodegradation of polyester-based plastic materials by selected bacterial cultures. JOURNAL OF POLYMERS AND THE ENVIRONMENT. 2000;8(1):17–27.
IEEE
[1]
J. Mergaert et al., “In vitro biodegradation of polyester-based plastic materials by selected bacterial cultures,” JOURNAL OF POLYMERS AND THE ENVIRONMENT, vol. 8, no. 1, pp. 17–27, 2000.
@article{125262,
  abstract     = {{A simple and rapid in vitro test was designed for the assessment of the biodegradation of polyester-based plastics by selected biodegrading bacterial strains. Variovorax paradoxus LMG 16137 was used for the degradation of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) and Acidovorax avenae subsp. avenae LMG 17238 for the synthetic-based polyesters poly(epsilon -caprolactone) (PCL), poly(butylene succinate-co-butylene adipate), and a starch-PCL blend. Degradation by the bacteria was studied in liquid medium with the plastics (films, granules, and injection-molded test bars) as sole sources of carbon. Degradation was followed through gravimetry, growth of the culture, and tensile testing. The effects of incubation time, inoculum density, aeration, incubation temperature, and pH of the medium on the mass loss were investigated and conditions optimized. The test allowed to obtain reproducible results on the mass loss of plastic samples in less than 3 weeks and yielded excellent partially degraded samples for further analysis.}},
  author       = {{Mergaert, Joris and Ruffieux, Kurt and Bourban, Christophe and Storms, Virginie and Wagemans, Wim and Wintermantel, Erich and Swings, Jean}},
  issn         = {{1566-2543}},
  journal      = {{JOURNAL OF POLYMERS AND THE ENVIRONMENT}},
  keywords     = {{Variovorax paradoxus,Acidovorax avenae subsp avenae,poly(3-hydroxybutyrate-co-3-hydroxyvalerate),poly(epsilon-caprolactone),poly(butylene succinate-co-butylene adipate),in vitro biodegradation,POLY(3-HYDROXYBUTYRATE) DEPOLYMERASE,MICROBIAL-DEGRADATION,ANAEROBIC BACTERIUM,CELLULOSE-ACETATE,POLY(3-HYDROXYBUTYRATE-CO-3-HYDROXYVALERATE),SLUDGE,POLY(3-HYDROXYALKANOATES),POLYHYDROXYALKANOATES,PURIFICATION,ACIDOVORAX}},
  language     = {{eng}},
  number       = {{1}},
  pages        = {{17--27}},
  title        = {{In vitro biodegradation of polyester-based plastic materials by selected bacterial cultures}},
  url          = {{http://dx.doi.org/10.1023/A:1010168011209}},
  volume       = {{8}},
  year         = {{2000}},
}

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