caa a22 4500 445385146 CHVBK 20180317143030.0 cr unu---uuuuu 170323e20111201xx s 000 0 eng 10.1007/s10924-011-0367-4 doi (NATIONALLICENCE)springer-10.1007/s10924-011-0367-4 Morphology of Penicillium funiculosum During Biodegradation of Poly (β-hydroxybutyrate-co-β-hydroxyvalerate) [PHBV] with Poly (ε-Caprolactone) [PCL] Blends [Elektronische Daten] [Berenice Vergara-Porras, Jorge Gracida-Rodríguez, Fermín Pérez-Guevara] Blends of poly (β-hydroxybutyrate-co-β-hydroxyvalerate) with poly (ε-caprolactone) were produced using melt mixing and solvent casting techniques. The biodegradation of blends was tested based in the ASTM G21-90 using Penicillium funiculosum fungal specie. The CO2 production during biodegradation was measured and fitted using the Gompertz model. Biodegradation of blends varies according to the mixing technique and the proportion of bacterial polymers in the blends. Although lag phase was larger, solvent-casted blends were easier to degrade due to their porous surface and relative lower crystallinity. P. funiculosum morphology during biodegradation appeared to be related to carbon availability i.e. larger and more complex conidiophores, more phialides per conidiophore and the presence of double-phialides, were found in blends with higher PHAs proportion. P. funiculosum morphology was independent to the blending technique used. Hence, morphology of P. funiculosum could be useful as a reference for carbon bioavailability of the blends. Springer Science+Business Media, LLC, 2011 Blend biodegradation nationallicence Bioavailability index nationallicence Fungal morphology nationallicence Mixing technique nationallicence Polymer blend nationallicence Vergara-Porras Berenice Biotechnology and Bioengineering Department, CINVESTAV-IPN, Av. Instituto Politécnico Nacional 2508 Col. San Pedro Zacatenco, 07360, Mexico City, D. F, Mexico aut Gracida-Rodríguez Jorge Biotechnology Department, Universidad Politécnica de Pachuca, Zempoala, Hidalgo, Mexico aut Pérez-Guevara Fermín Biotechnology and Bioengineering Department, CINVESTAV-IPN, Av. Instituto Politécnico Nacional 2508 Col. San Pedro Zacatenco, 07360, Mexico City, D. F, Mexico aut Journal of Polymers and the Environment Springer US; http://www.springer-ny.com 19/4(2011-12-01), 834-840 1566-2543 19:4<834 2011 19 10924 https://doi.org/10.1007/s10924-011-0367-4 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10924-011-0367-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Vergara-Porras Berenice Biotechnology and Bioengineering Department, CINVESTAV-IPN, Av. Instituto Politécnico Nacional 2508 Col. San Pedro Zacatenco, 07360, Mexico City, D. F, Mexico aut NATIONALLICENCE 700 1- Gracida-Rodríguez Jorge Biotechnology Department, Universidad Politécnica de Pachuca, Zempoala, Hidalgo, Mexico aut NATIONALLICENCE 700 1- Pérez-Guevara Fermín Biotechnology and Bioengineering Department, CINVESTAV-IPN, Av. Instituto Politécnico Nacional 2508 Col. San Pedro Zacatenco, 07360, Mexico City, D. F, Mexico aut NATIONALLICENCE 773 0- Journal of Polymers and the Environment Springer US; http://www.springer-ny.com 19/4(2011-12-01), 834-840 1566-2543 19:4<834 2011 19 10924 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer