Effect of enzymatic pretreatment on the anaerobic digestion of milk fat for biogas production

Autor:	G.S. Silva, R.F. Domingues, Rogers Ribeiro, R. Franzolin Neto, Giovana Tommaso, Eliana Setsuko Kamimura, Beatriz Egerland Bueno, T. Sanches
Rok vydání:	2015
Předmět:	biology Chemistry Methanogenesis business.industry Geotrichum biology.organism_classification Candida rugosa Biotechnology Anaerobic digestion Hydrolysis Wastewater Biogas Bioenergy BIOGÁS Food science business Food Science
Zdroj:	Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual) Universidade de São Paulo (USP) instacron:USP
ISSN:	0963-9969
DOI:	10.1016/j.foodres.2015.03.027
Popis:	The lipids present in dairy wastes, in addition to representing an important industrial loss, interfere negatively in wastewater systems. Nevertheless, if properly and separately considered, this material may be an interesting substrate for methane production. The objective of the present research was to evaluate the anaerobic degradation of milk fat in natura and when separately hydrolyzed by two lipases, one produced by Geotrichum candidum (GCL) and the other produced by Candida rugosa (CRL). The main purpose was to evaluate whether the enzymes' mechanisms of action would interfere with the anaerobic digestion of fats. The rates of biogas production and specific methane production both indicated CRL as the most advantageous. In addition to offering no benefit, pre-hydrolysis with GCL showed a higher degree of microbial inhibition.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::99c6535656c0b4011cfaa542acb83793 https://doi.org/10.1016/j.foodres.2015.03.027 Zobrazit plný text záznamu Full Text from ScienceDirect