Cheyne Joy G. Gallego, Helen Grace A. Torreblanca (October 2009)
Philippine Science High School Western Visayas Campus – Department of Science and Technology (DOST-PSHS WVC), Brgy. Bito-on, Jaro, Iloilo City 5000, Philippines
ABSTRACT
The study dealt with the evaluation of the antifungal activity (cm of inhibition zone) of the different concentrations (12.5%, 25%, 50%, 100%) of extracts of different parts namely, rind and seeds of mature and aborted mango (Mangiferia indica L.) fruits against Colletotrichum gloeosporioides causing the anthracnose disease using the assay Agar-well Diffusion Method.
Anthracnose is considered one of the most serious among mango diseases. Several fungicides were developed but have not shown significant results in preventing the disease. Some components in plants have been known to possess antimicrobial activity that prevents the plant from being infected by diseases.
Mature and immature mango fruits were divided into parts and extracted separately. Cultures of C. gloeosporioides were prepared using Potato Dextrose Agar as media, and six wells were bored on the surface of each plate and different concentrations of different mango extracts including the controls (distilled water and BenlightTM) were disposed on the wells and left on 24°C. Data were gathered after two days.
Results showed that methanolic extracts of immature mango fruits have relatively higher antifungal activity on C. gloeosporioides cultures than mature ones, and methanolic extracts of mango seed kernels have relatively higher antifungal activity on C. gloeosporioides cultures than mango rinds extracts.
Generally, it has been found that immature and mature mango peels and seeds have antifungal activity.