| Title |
Valorisation of digestate from biowaste through solid-state fermentation to obtain value added bioproducts: A first approach |
| ID_Doc |
29690 |
| Authors |
Cerda, A; Mejias, L; Rodríguez, P; Rodríguez, A; Artola, A; Font, X; Gea, T; Sánchez, A |
| Title |
Valorisation of digestate from biowaste through solid-state fermentation to obtain value added bioproducts: A first approach |
| Year |
2019 |
| Published |
|
| DOI |
10.1016/j.biortech.2018.09.131 |
| Abstract |
Digestate from biowaste was assessed as a potential source of bioproducts of commercial and industrial interest through solid-state fermentation. The targeted bioproducts were hydrolytic enzymes (cellulases and proteases from autochthonous microbiome), biosurfactants (sophorolipids produced from Starmella bombicola) and bio-pesticides (produced from Bacillus thuringiensis). Low cellulase production was observed within the range of 0.5-1.5 FPU g(-1) DM while protease production showed two discrete peaks of 66 +/- 8 and 65 +/- 3 U g(-1) DM at 3.5 and 48 h, respectively. Low sophorolipids production was also obtained, with a maximum yield of 0.02 g g(-1) DM using hygienised digestate supplemented with external sugar and fat sources. Biopesticides produced by B. thuringiensis were successfully at 72 h of operation, reaching a maximum spore production of 8.15 +/- 0.04 (107) CFU g(-1) DM and 2.85 +/- 0.22 (107) CFU g(-1) DM using sterile and hygienised digestate, respectively. These biopesticides could contribute to the substitution of chemically produced pesticides, moving towards a sustainable digestate management in a circular economy scheme. |
| Author Keywords |
Solid state fermentation; Digestate; Valorisation; Bioproducts; Biopesticide |
| Index Keywords |
Index Keywords |
| Document Type |
Other |
| Open Access |
Open Access |
| Source |
Science Citation Index Expanded (SCI-EXPANDED) |
| EID |
WOS:000448161200052 |
| WoS Category |
Agricultural Engineering; Biotechnology & Applied Microbiology; Energy & Fuels |
| Research Area |
Agriculture; Biotechnology & Applied Microbiology; Energy & Fuels |
| PDF |
https://ddd.uab.cat/pub/artpub/2019/196258/biotec_a2019m1v271p409.pdf
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