Related Experiment Video
Updated: Sep 25, 2025

Medium Preparation for the Cultivation of Microorganisms under Strictly Anaerobic/Anoxic Conditions
Published on: August 15, 2019
Tylosin in anaerobic reactors: degradation kinetics, effects on methane production and on the microbial community
Aline Gomes de Oliveira Paranhos1, Andressa Rezende Pereira1, Yasmim Arantes da Fonseca1
1Programa de Pós Graduação em Engenharia Ambiental, Escola de Minas, Universidade Federal de Ouro Preto, Campus universitário Morro do Cruzeiro, s/n, Ouro Preto, MG, Brazil.
Abstract:
Tylosin eliminated in animal waste, during therapeutic treatment, can be efficiently removed in anaerobic systems. The present study investigated the influence of tylosin concentration and assessed its degradation kinetics and the microorganisms involved in each stage of its anaerobic digestion (hydrolysis/acidogenesis; acetogenesis; methanogenesis). The results showed a stimulating effect on methane production with increasing tylosin concentration in the poultry litter up to 80 mg kg-1 tylosin (232.9 NL CH4 kg SV-1). As for tylosin degradation, greater removal of antibiotics was observed in the methanogenic phase (88%), followed by acetogenic (84%) and hydrolytic/acidogenic (76%) phases. The higher rate of tylosin degradation obtained in the methanogenic step, is mainly related to the co-metabolic effect exerted by the presence of acetate and its degradation by acetoclastic methanogens. Indeed, metagenomic analyses suggested a syntrophic action between archaea of the genus Methanobacterium, and bacteria such as Clostridium and Flexilinea, which seemed decisive for tylosin degradation.
More Related Videos
15:19Development of Sulfidogenic Sludge from Marine Sediments and Trichloroethylene Reduction in an Upflow Anaerobic Sludge Blanket Reactor
Published on: October 15, 2015
11:31Continuously-stirred Anaerobic Digester to Convert Organic Wastes into Biogas: System Setup and Basic Operation
Published on: July 13, 2012
Related Concept Videos
Amino Acid Catabolism
Metabolism of Chemolithotrophs
Environmental Applications of Microorganisms
Lipid Catabolism
Overview of Archaea
Microbial Fermentation