Evaluating the content of some bioactive secondary metabolites and flavonoids in ‎Atriplex patula at different phenological stages

This experiment was performed to determine the content of some bioactive compounds and flavonoids of Atriplex patula L. at different phenological stages. Three phonological stages, including vegetative (eight-leaf), flowering and seed production stages, were considered as three treatments of experiment. Some biochemical parameters and also rutin and quercetin were measured at different growth stages. The results showed that the highest (2.06 mg g-1) and lowest (0.88 mg g-1) total chlorophyll content was observed at seed production and vegetative stages, respectively. Also, the highest chlorophyll ‘a’, chlorophyll ‘b’ and carotenoids contents were observed in the seed production and vegetative stages, respectively. The highest amount of total phenols (132.76 mg gallic acid 100g-1 FW), total tannin (0.057 mg tannic acid 100g-1 FW) and antioxidant capacity (50.28%) were found at flowering stage, while the lowest amount of total phenols (92.24 mg gallic acid 100g-1 FW), total tannin (0.041 mg tannic acid 100g-1 FW) and antioxidant capacity (16.95%) were observed at vegetative stage. The highest and lowest (88.05 and 35.95 mg rutin 100g-1 FW) amount of total flavonoid was found at seed production and vegetative stages. The highest and lowest quercetin levels were observed in seed production and vegetative stages (0.05 and 0.01 mg g-1 dry weight), respectively. Also, the highest and lowest (2.11 and 1.85 mg g-1 dry weight) amount of rutin were found in the seed production and vegetative stages. Due to the high amount of some biochemical compounds in Atriplex patula, the medicinal potential of this plant can be used in the future.