Conversion of tomato waste into a poly (3-hydroxybutyrate-co-3-hydroxyvalerate-co-3-hydroxyhexanoate) by a mixed microbial community

被引：1
作者：
Rodrigues, Thomas [1 ,2 ]
V. Torres, Cristiana [1 ,2 ]
Freitas, Patricia [1 ,2 ]
Neves, Luisa A. [3 ]
Carvalheira, Monica [1 ,2 ]
Reis, Maria A. M. [1 ,2 ]
Freitas, Filomena [1 ,2 ]
机构：
[1] NOVA Univ Lisbon, NOVA Sch Sci & Technol, i4HB Inst Hlth & Bioecon, P-2819516 Caparica, Portugal
[2] NOVA Univ Lisbon, NOVA Sch Sci & Technol, Dept Chem, UCIBIO Appl Mol Biosci Unit, P-2819516 Caparica, Portugal
[3] Univ NOVA Lisboa, NOVA Sch Sci & Technol, Dept Chem, LAQV REQUIMTE Associated Lab Green Chem, Campus Caparica, P-2819516 Caparica, Portugal
来源：
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING | 2024年 / 12卷 / 06期
关键词：
Waste valorization; Polyhydroxyalkanoates (PHAs); Terpolymer; Poly(3-HB-co-3HV-co-3HHx); Biodegradable films; VOLATILE FATTY-ACIDS; FOOD WASTE; UNCOUPLED CARBON; PHA; POLYHYDROXYALKANOATES; FILMS; NITROGEN; CULTURES; VALORIZATION; TEMPERATURE;
D O I：
10.1016/j.jece.2024.114755
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Tomato waste (TW) originating from tomato processing is produced in large quantities and has a low cost, presenting as an interesting feedstock for biotechnological valorization into value-added bioproducts. This study explored the utilization of TW as feedstock to produce polyhydroxyalkanoates (PHA) by a mixed microbial community. The bioprocess encompassed acidogenic fermentation of TW with a maximum yield of 0.22 +/- 0.05 gFP/gVS. A maximum PHA content of 66.8 +/- 11.0 wt.% was reached in the accumulation assays, with a yield of 0.75 +/- 0.10 CmmolPHA/CmmolFP. The biopolymer was composed of 3-hydroxybutyrate (3HB), hydroxyvalerate (3HV) and hydroxyhexanoate (3HHx) with an average composition of 82:11:7 (3HB:3HV:3HHx, molar basis) and similar mechanical and thermal properties to other 3HB:3HV:3HHx terpolymers and comparable to high density polyethylene and polypropylene. These findings demonstrated that TW can be used to efficiently produce a PHA terpolymer with properties that render it suitable for replacing petrochemical-derived plastics.
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页数：11
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