1. Institute of Industrial Fermentations, CSIC, Juan de la Cierva 3, 28006 Madrid, Spain
2. Instituto de Química-Física “Rocasolano”, CSIC, Serrano 119, 28006 Madrid, Spain
3. Institute of Animal Reproduction and Food Research, Polish Academy of Sciences, ul. Tuwina 10, 10-747 Olsztyn, Poland