Abstract
Regarding the effects of the harvesting stage on the amount of phenolic content and antioxidant activity of medicinal herbs Satureja hortensis L., Origanum majorana L., Salvia virgata Ait., Melissa officinalis L. and Hyssopus officinalis L. an experiment has been tested three S.D in form of randomized complete block design.The results of this survey in herbal medicine showed the effects of the harvesting stage on the amount of phenolic content and antioxidant activity in the pre-flowering had the least and flowering time had the most phenolic content and antioxidant activity. The most amount of phenolic content and antioxidant activity in Satureja hortensis herbal medicine are (25.15mgGAE/gdw) in flowering and (8.38µg/ml) in pre-flowering stage in sequence. The most amount of phenolic content and antioxidant activity in Origanum majorana herbal medicine are (46.73mg GAE/gdw) in pre- flowering and (6.53µg/ml) in flowering stage in sequence. The most amount of phenolic content and antioxidant activity in Salvia virgata herbal medicine are (47.27mgGAE/gdw) in flowering and (7.77µg/ml) in pre- flowering stage in sequence. The most amount of phenolic content and antioxidant activity in Melissa officinalis herbal medicine are (42.60mg GAE/gdw) and (7.32µg/ml) in flowering stage in sequence. The most amount of phenolic content and antioxidant activity in Hyssopus officinalis herbal medicine are (21.88mg GAE/gdw) and (9.53µg/ml) in flowering stage in sequence.
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