Comparison of aqueous extracts of Citrus × aurantium and Aloe vera L. as fungistatic control of Fusarium spp

Abstract

Objective: To evaluate the fungistatic capacity of aqueous extracts obtained from Citrus × aurantium (sour orange) and Aloe vera L. on phytopathogenic fungi of the genus Fusarium spp. Design/Methodology/Approach: Three aqueous extracts were made (aloe peel, aloe peel and gel, and sour orange peel). The inhibition capacity in the in vitro growth of a Fusarium spp. strain was measured using the following concentrations: 750 µg/mL, 500 µg/mL, 250 µg/mL, 1 mg/mL, 5 mg/mL, 10 mg/mL, 20 mg/mL, 50 mg/mL, 70 mg/mL, and 100 mg /mL in each extract. The control was sterile distilled water. The radial growth of the mycelium was measured daily, starting from the infected disc up to the edge of its diameter. Results: The following extracts recorded a good inhibitory response: 100- and 70-mg concentrations of aloe peel and gel in 1 mL of agar; 70-mg concentration of orange in 1 mL of agar; and 100-mg concentration of aloe peel in 1 mL of agar. Findings/Conclusions: The aqueous extract of aloe had a 47.5 % inhibitory potential in the radial growth of Fusarium.