RT Journal Article
T1 Giving credit to residual bioresources: 												From municipal solid waste hydrolysate and waste plum juice to poly (3-hydroxybutyrate)
A1 Izaguirre, Jon Kepa
A1 da Fonseca, M. Manuela R.
A1 Castañón, Sonia
A1 Villarán, M. Carmen
A1 Cesário, M. Teresa
AB Municipal solid waste (MSW) is massively generated all over the world. Its organic fraction (OFMSW), which represents a high percentage of MSW, mainly contains biodegradable materials, namely food waste, paper and garden waste. The social cost of OFMSW treatment and/or disposal is a serious and widespread problem, particularly in highly populated areas. Thus, effective and innovative solutions, which include the upgrading of OFMSW, are being currently sought. In fact, the OFMSW abundance, availability and average composition suggest its considerable potential within the circular economy desideratum, paving the way to valorisation approaches. In this context, an OFMSW sugar-rich hydrolysate and its validation as a substrate for the production of the polyester poly(3-hydroxybutyrate) (P(3HB)), to date the only bioplastic easily biodegradable in marine environment, were successfully obtained in a previous study. Based on those results, this work addresses the upscaling of the fermentative production, in fed-batch mode, of P(3HB) by Burkholderia sacchari. The OFMSW hydrolysate was used as cultivation medium due to its balanced nutrient composition, while a plum waste juice, also rich in sugars, was applied as feed to the bioreactor. By implementing this strategy, a maximum P(3HB) production of 30 g·L−1 with an accumulation of 43% g (P(3HB))/g cell dry weight (CDW) after 51 h, was achieved. The use of the hydrolysate as initial medium resulted in higher CDW (71 g·L−1) than that of the simulated hydrolysate (62 g·L−1 in average), probably because the OFMSW hydrolysate favours biomass growth in detriment of P(3HB) production.
SN 0956-053X
YR 2020
FD 2020-12
LK https://hdl.handle.net/11556/3403
UL https://hdl.handle.net/11556/3403
LA eng
NO Izaguirre , J K , da Fonseca , M M R , Castañón , S , Villarán , M C & Cesário , M T 2020 , ' Giving credit to residual bioresources : From municipal solid waste hydrolysate and waste plum juice to poly (3-hydroxybutyrate) ' , Waste Management , vol. 118 , pp. 534-540 . https://doi.org/10.1016/j.wasman.2020.09.014
NO Publisher Copyright: © 2020 Elsevier Ltd
NO The authors are thankful for the technical and human support provided by SGIker of UPV/EHU and for the European funding ( ERDF and ESF ). Jon Kepa Izaguirre would like to acknowledge the Basque Government for awarding a predoctoral fellowship to achieve his PhD degree in the context of this research project. Funding received by iBB-Institute for Bioengineering and Biosciences from FCT-Portuguese Foundation for Science and Technology (grant UIDB/04565/2020 ) and from Programa Operacional Regional de Lisboa 2020 (Project N. 007317 ) is also acknowledged. The authors are thankful for the technical and human support provided by SGIker of UPV/EHU and for the European funding (ERDF and ESF). Jon Kepa Izaguirre would like to acknowledge the Basque Government for awarding a predoctoral fellowship to achieve his PhD degree in the context of this research project. Funding received by iBB-Institute for Bioengineering and Biosciences from FCT-Portuguese Foundation for Science and Technology (grant UIDB/04565/2020) and from Programa Operacional Regional de Lisboa 2020 (Project N. 007317) is also acknowledged.
DS TECNALIA Publications
RD 30 jul 2024