Erratum to: J Surfact Deterg DOI 10.1007/s11743-012-1418-0

In the original publication of the article, two author names have been incorrectly published. The corrected author group should read.

Abdul-Raheim Mahmoud Abdul-Raheim · Manar El-Sayed Abdel-Raouf · Nermine El-Sayed Maysour · Ahmed Fawzy El-Kafrawy · Ahmed Zaher Mehany · Abdel-Azim Ahmed Abdel-Azim