Mothers milk and hydrogen peroxide

H2O2 levels in motherʹs milk were measured at different times of postpartum periods after birth as well as after different times of storage at freezing temperature. The luminol H2O2 dependent chemiluminesence at pH = 9.8 technique was used. Maximum levels of H2O2 were found in the first week of the postpartum period (24.992 +- 0.168 (mu)M). The levels of H2O2 decreased significantly (P<0.05) in the second week (20.4 +- 0.169 (mu)M), while a significant (P<0.01) decrease in the level of H2O2 occured in the third week after birth (15.783 +- 0.782) (mu)M. The levels of H2O2 fell sharply in the fourth week of lactation (8.75 +- 0.27 (mu)M) with a significant difference relative to the first week (P <0.001). The stability of the H2O2 levels remained constant, at least for a period of one month, with storage at freezing point for all groups (P>0.05).