Rapid and efficient purification method for small, hydrophobic, cationic bacteriocins : Purification of lactococcin b and pediocin PA-1 - Chikindas, M. L.; Haandrikman, A. J.; Kok, J.; Leenhouts, K. J.; Seegers, J. F. M. L.; Venema, G.; Venema, K.