title: Disinfection of waterborne coliform bacteria using Luffa cylindrica fruit and seed extracts.
abstract: This study examined the potential of extracts of the plant Luffa cylindrica to act as disinfectants of drinking water. Aqueous extracts of the seeds and fruit of L. cylindrica were tested against total and faecal coliform bacteria in surface water by varying the extract doses and contact times. Inactivation of both faecal coliforms and total coliforms was highly variable and dose-dependent. The maximum coliform inactivation achieved in any trial was 86%. Fruit extracts were more successful at inactivating total coliforms than faecal coliforms. Seed extracts achieved higher coliform inactivation levels than fruit extracts generally. Overall, the antimicrobial potential of seeds and fruit from L. cylindrica was demonstrated; however the disinfection performance was less than would be required for these extracts to be considered reliable disinfectants for drinking water treatment.
authors.affiliation: Department of Civil and Environmental Engineering, Imperial College London, London SW7 2AZ, UK.
authors.forename: Ameer
authors.initials: A
authors.lastname: Shaheed
authors.forename: Michael R
authors.initials: MR
authors.lastname: Templeton
authors.forename: Robert L
authors.initials: RL
authors.lastname: Matthews
authors.forename: Sabitri K
authors.initials: SK
authors.lastname: Tripathi
authors.forename: Kiran
authors.initials: K
authors.lastname: Bhattarai
mesh_terms: D015169:Colony Count, Microbial; D004203:Disinfection / Q000379:methods*; D004305:Dose-Response Relationship, Drug; D004755:Enterobacteriaceae / Q000187:drug effects*; D005638:Fruit / Q000737:chemistry; D029776:Luffa / Q000737:chemistry*; D009822:Oils, Volatile; D010936:Plant Extracts / Q000494:pharmacology*; D012639:Seeds / Q000737:chemistry; D013997:Time Factors; D014871:Water Microbiology; D014873:Water Pollutants; D018508:Water Purification / Q000379:methods*
chemical_list: D009822:Oils, Volatile; D010936:Plant Extracts; D014873:Water Pollutants