Skip to main content

Advertisement

Table 8 Physicochemical properties of neem soap and SON specifications for toilet soap

From: Inhibitory effects of Azadirachta indica secondary metabolites formulated cosmetics on some infectious pathogens and oxidative stress radicals

Physicochemical Properties NMS NMLS NMSBS NMLSBS SON* Control
Colour milky milky milky milky
pH. (10%) 9.60 ± 0.03 9.40 ± 0.02 9.36 ± 0.03 9.34 ± 0.01 9–11 max a
% Moisture content 14.45 ± 0.02 12.50 ± 0.00 13.42 ± 0.03 13.36 ± 0.02 13–20 max
%Total fatty matter 77.30 ± 0.04 77.68 ± 0.00 80.02 ± 0.01 80.14 ± 0.02 76.50 mini b
Total free caustic alkali as Na2O 0.32 ± 0.03 0.14 ± 0.01 0.12 ± 0.02 0.13 ± 0.00 0.20 max
% Matter insoluble in ethanol 0.40 ± 0.01 0.03 ± 0.04 0.22 ± 0.00 0.20 ± 0.02 2.00 max
% Matter insoluble in water 0.35 ± 0.00 0.33 ± 0.02 0.26 ± 0.01 0.23 ± 0.04 0.50 max
% Unsaponified Matter 0.23 ± 0.01 0.13 ± 0.02 0.04 ± 0.01 0.22 ± 0.01 0.50 max
Texture Hard very hard very hard very hard
Leathering Good excellent excellent excellent
  1. Standard organisation of Nigeria specifications for toilet soap ± SD, n = 3. P < 0.05 was considered significant. NMS = neem soap without neem EO, a NMLS = neem soap with leaf EO, NMLSBS = neem soap with leaf and stem bark EOs. a = maximum limit, b = minimum limit