The aim of this study was to investigate the oils extracted from seeds of Amaranthus hybridus, Basella alba and Celosia argentea for their antioxidant and antifungal potential. The phytochemical characteristics and antioxidant compounds content of the plant oilseeds were determined using standard methods. Vitamin E content was analyzed by high performance liquid chromatography. The oxidative stability of these oils was determined by using the oven test method, and their antifungal effect was determined by agar dilution method. The studied seed oils highlighted the presence of tannins, steroids and terpenoids. Phospholipids, carotenoids, vitamin E and phenols contents of the studied seed oils were approximately 0.27 ± 0.01%, 1.00 ± 0.01 mg/g, 0.19 ± 0.01 mg/g and 6.70 ± 0.10 mg/g, respectively. Amaranthus hybridus seed oil showed more oxidative stability with peroxide value of 32.66 meq O2/kg at 12th storage day in oven (60°C). Celosia argentea seed oil showed antifungal activity against Aspergillus fumigatus, Candida tropicalis and Trichophyton mentagrophytes with minimal inhibitory concentration (MIC) of 50%. A. hybridus, B. alba and C. argentea seed oils showed pronounced antioxidant and antifungal activities. These characteristics should be exploited for possible applications in the food supplement, pharmaceutical and cosmetic industries.
