title: Conversion of food waste into biofertilizer for the biocontrol of root knot nematode by Paecilomyces lilacinus.
abstract: The feasibility of converting food waste into nematocidal biofertilizer by nematophagous fungus Paecilomyces lilacinus (P. lilacinus) was investigated. The culture conditions of P. lilacinus were optimized through response surface methodology. Results showed that fermentation time, the amount of food waste, initial pH and temperature were most important factors for P. lilacinus production. The P. lilacinus production under optimized conditions was 10(9.6 ± 0.3) conidia mL⁻¹. After fermentation, the chemical oxygen demand concentration of food waste was efficiently decreased by 81.92%. Moreover, the property evaluation of the resultant food waste as biofertilizer indicates its high quality with reference to the standard released by the Chinese Ministry of Agriculture. The protease activity and nematocidal ability of P. lilacinus cultured by food waste were 10.8% and 27% higher than those by potato dextrose agar, respectively.
authors.affiliation: a Key Laboratory of Urban Pollutant Conversion , Institute of Urban Environment, Chinese Academy of Sciences , Xiamen 361021 , People's Republic of China.|b Graduate University of Chinese Academy of Sciences , Beijing 100049 , People's Republic of China.
authors.forename: Zhen
authors.initials: Z
authors.lastname: Yu
authors.affiliation: a Key Laboratory of Urban Pollutant Conversion , Institute of Urban Environment, Chinese Academy of Sciences , Xiamen 361021 , People's Republic of China.
authors.forename: You-Chi
authors.initials: YC
authors.lastname: Zhang
authors.affiliation: a Key Laboratory of Urban Pollutant Conversion , Institute of Urban Environment, Chinese Academy of Sciences , Xiamen 361021 , People's Republic of China.|b Graduate University of Chinese Academy of Sciences , Beijing 100049 , People's Republic of China.
authors.forename: Xiang
authors.initials: X
authors.lastname: Zhang
authors.affiliation: a Key Laboratory of Urban Pollutant Conversion , Institute of Urban Environment, Chinese Academy of Sciences , Xiamen 361021 , People's Republic of China.
authors.forename: Yin
authors.initials: Y
authors.lastname: Wang
mesh_terms: D000818:Animals; D005285:Fermentation; D005308:Fertilizers / Q000032:analysis*; D006999:Hypocreales / Q000166:cytology / Q000201:enzymology / Q000254:growth & development / Q000502:physiology*; D010143:Paecilomyces / Q000166:cytology / Q000201:enzymology / Q000254:growth & development / Q000502:physiology*; D010572:Pest Control, Biological; D010935:Plant Diseases / Q000517:prevention & control; D062611:Solid Waste / Q000032:analysis*; D014431:Tylenchoidea / Q000382:microbiology*
chemical_list: D005308:Fertilizers; D062611:Solid Waste
keywords: Paecilomyces lilacinus; biocontrol; biofertilizer; food waste; optimization