1. Hamburg University of Applied Sciences, Research Centre of Lifetec Process Engineering, Lohbrügger Kirchstr. 65, 21033 Hamburg-Bergedorf, Germany
2. University of Hamburg, Department of Chemistry, Martin-Luther-King-Platz 6, 20146 Hamburg, Germany
3. University of KwaZulu-Natal, Discipline of Microbiology, School of Biochemistry, Genetics and Microbiology, Pietermaritzburg 3201, South Africa