Valorisation of digestate from biowaste through solid-state fermentation to obtain value added bioproducts: A first approach

被引：57

作者：

Cerda, Alejandra ^{[1
]}

Mejias, Laura ^{[1
,2
]}

Rodriguez, Paula ^{[1
]}

Rodriguez, Alejandra ^{[1
]}

Artola, Adriana ^{[1
]}

Font, Xavier ^{[1
]}

Gea, Teresa ^{[1
]}

Sanchez, Antoni ^{[1
]}

机构：

[1] Univ Autonoma Barcelona, GICOM Res Grp, Dept Chem Biol & Environm Engn, Sch Engn, Edif Q, Barcelona 08193, Spain

[2] Aeris Tecnol Ambientales SL, Carrer Santa Rosa 38, Barcelona 08290, Spain

来源：

BIORESOURCE TECHNOLOGY | 2019年 / 271卷

基金：

欧盟地平线“2020”;

关键词：

Solid state fermentation; Digestate; Valorisation; Bioproducts; Biopesticide; PROTEASE PRODUCTION; BACILLUS-THURINGIENSIS; BENCH-SCALE; BIOPESTICIDE PROPERTIES; SUGARCANE BAGASSE; AROMA COMPOUNDS; COFFEE HUSK; WASTE; CELLULASE; VALORIZATION;

D O I：

10.1016/j.biortech.2018.09.131

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

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.

引用

页码：409 / 416

页数：8

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