Inhibitory of Encapsulated Earthworm Extract (Lumbricus rubellus) on Pathogenic Bacteria in Vitro

Abstract

The objective of this study was to determine the inhibitory of earthworm (Lumbricus rubellus) extract (ECT) and encapsulated earthworm extract (ECT-t) as poultry feed additive against some pathogenic bacteria. Earthwom extract was prepared by dekokta method with water at 90 ºC then encapsulated by spray drying with maltodextrin as filler. In vitro antibacterial activity was performed using dilution method against Escherichia coli, Staphylococcus aureus, Salmonella pullorum, and Pseudomonas aeruginosa. The optical density results showed that started from ECT level 0.26% inhibited (P0.05) of ECT and ECT-t against S. pullorum.

Keywords

• antibacterial
• encapsulation
• earthworm L. rubellus
• extract