Antimicrobial and pesticidal activities of soya saponin
Nanis G. AllamHamdy K. Abou-Taleb, Mostafa S. Aboobia
Abstract:
Soya saponin is a triterpenoid compound of 30 carbon atom. It’s recorded that they have an in-vitro antimicrobial activity against gram positive bacteria (Staphyllococcus aureus and S. epidermiditis), gram negative bacteria (Escherichia coli, Pseudomonas aeruginosa, Agrobacterium tumefaciens, Erwinia amylovora and E. carotovora), Candida albicans and plant pathogenic fungi (Fusarium oxysporium and Botrytis cinerea). And also have an insecticidal activity against stored product insects. Toxicity of soya saponin against Tribolium castaneum was more than Rhyzopertha dominica and Sitophilus oryzae and its LC50 against T. castaneum were 44.63, 18.16, 6.83, 4.03 and 2.741 (µg / cm2) after 24, 48, 72, 96 and 120 hours respectively. In addition, nematicidal activity of soya saponin against root-knot nematode Meloidogyne incognita was determined.