Paint discoloration control and preservation with phytoextracts of Bryophyllum pinnatum and Tetrapleura tetraptera

Paint discoloration by bacterial species and its control using phytobiactive agents was investigated. The bacterial species; Pseudomonas, Micrococcus, and Bacillus used in the study exhibited high degree of paint discoloration. The rate of discoloration significantly (p<0.05) is influenced by the type of organisms, incubation time, bacterial speciation. The level of preservation and control is considered the function of each extracts composition. Within the period of 24 and 96 hours, Micrococcus sp (71.1 – 85.2%) and Bacillus sp (71.6 – 86.6%) exhibited higher discoloration capabilities than Pseudomonas sp (68.7 – 74.3%) with a mean percentage discoloration of eighty (80%) per cent. The consortia of Micrococcus/ Bacillus spp exhibited higher percentage discoloration rate than that of Pseudomonas/ Micrococcus and Pseudomonas/Bacillus spp with no significant difference (p<0.05). B. pinnatum extract exhibited strong antibactactial potency than extract of T. tetraptera. However succeptibility of the cell to phytoextracts was positively correlated (r=0.05) and significant (p<0.01). Hence, B. pinnatum extract discolorations control and paint preservation rate at 250µg/100ml and 500µg/100ml concentration were higher than that of T. tetraptera. The preservation rate at (MBC) of 500µg/100ml of each extract was double against 250µg/100ml. Result obtained suggested that latex paint is subjected to bacterial discoloration can be control with phytobioactive  agents and these bioactive agents significantly bring about paint   preservation especially in the humid-dried environment . Therefore, B. pinnatum and T. tetraptera   bioactive compounds could be supplemented in paint to control discoloration and paint preservation without any toxicity effect