This study make as research about activity of secondary compounds in Mentha longifolia plant extracts as crude , the effect of crude extract of Mentha longifolia leaves make as inhibitory growth factor for two types of bacteria Staphylococcus aureus and Escherichia coli , and inhibit emerge four stage larvae of mosquitoes . watery and alcohol plant extracts of Mentha longifolia leaves were prepared , were appear variation effect in bacteria , the water plant extract show simple effect in Staph. aureus , while alcohol extract show clear effect in E. coli . in state of emerge four stage larva of mosquitoes , there are clear effect for alcohol extract in larvae comparing with water extract
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