Evaluation of phytochemical and antioxidant activity in different parts of Ferula assafoetida L. from Semnan and Khorasan provinces

This study was evaluated in phytochemical and antioxidant activity of Ferula assafoetida L. in Semnan and Khorasan-Razavi provinces. The plant samples were collected in May 2013, the total phenolic was determined by Folin–Ciocalteu, total flavonoid by Aluminium chloride , tannin contents by Folin- Denis and the antioxidant capacity were measured utilizing DPPH and FRAP methods. Results of variance analysis were showed that the highest total phenols content (1.014 and 2.8 mgGAE/1 g) was observed in leave extract of Khorasan and Semnan provinces, respectively. The maximum tannin contents (0.00194 mg/ml) was observed in stem and leave extracts of Khorasan and Semnan provinces .Also the highest antioxidant activity by DPPH method (1111.08 and 731.61 µg/ml) was observed in root extract of Khorasan province samples. The maximum antioxidant activity content were obtained in leave extract of Semnan by FRAP method (2.85 mg/ml). In general the highest content of total phenol and flavonoid was obtained in leave and root extracts of plants in Semnan province. But the root extract of Khorasan had the maximum antioxidant capacity (1111.08 µg/ml).Therefore it may be stated that Mojen region in Semnan province had higher antioxidant activity than Khorasan region. So the quality of antioxidant compounds of Ferula assafoetida L. was depending on variation of environmental factors and plant parts.