MOLLUSCICIDAL EFFECT OF METHANOL EXTRACT OF Ricinus communis SEED ON Pomanea canaliculata

Abstract

This study aimed to evaluate the molluscicidal effect of R. communis seed aqueous extract on P. canaliculata snails. R. communis seed extract was extracted by combining the immersion method using solvent methanol and ultrasound. The effectiveness of molluscicide was determined by bait and immersion methods. Mortality rates were analyzed using a probit regression model. Phytochemical screening of R. communis seed was analyzed using chemical methods. The content of phenolic and flavonoid were determined by the spectrophotometer method. The results showed that the moisture content of R. communis seed was 70.38% and the extraction efficiency of R. communis seed was 5.34%. 24 h after being challenged by immersion, R. communis seed extract has the LC₅₀ and LC₉₀ values was 178.93 and 667.49 ppm, respectively. Similarly, to the bait method, R. communis seed extract has the LC₅₀ and LC₉₀ was 105.91 and 329.94 ppm, respectively. R. communis seed extract contained biological compounds such as alkaloids, saponins, flavonoids, terpenoids, tannins, and phenols. The phenolic and flavonoid of R. communis seed extract per g of dry matter were 123.27 mg gallic acid/g; 61.73 mg quercetin/g.