RESUMO
The effects of light, temperature, pH and additives on the stability of Sulphacetamide sodium in eye preparations have been studied. The Sulphacetamide eye drops are stable at room temperature and lose potency at elevated temperature. The stability is also affected by light and pH of the solution. The eye drops are more stable when Sodium mctnbisulphitc and Phenyl mercuric nitrate are used as preservatives
RESUMO
Various samples of Pakistani honeys were assayed for the antibacterial activity with or without the presence of hydrogen peroxide [inactivated by the addition of catalase]. The non-peroxide antibacterial activity was detected only in few samples. The association of such activity with particular floral source suggests that the non-peroxide antibacterial activity is of floral origin