Antioxidant evaluation of three adaptogen extracts

Area of Science:

• Phytochemistry
• Oxidative Stress Research
• Herbal Medicine

Background:

• Adaptogens are recognized for their balancing and tonic properties.
• The antioxidant potential of adaptogens is an under-researched area.
• Oxidative stress is implicated in various health complications.

Purpose of the Study:

• To investigate and compare the antioxidant potential of three key adaptogen extracts.
• To explore the relationship between polyphenol content and antioxidant activity in these herbs.
• To assess the potential of adaptogens in mitigating oxidative stress.

Main Methods:

• Extraction of Rhodiola rosea, Eleutherococcus senticosis, and Emblica officinalis.
• Assay of antioxidant activities including singlet oxygen scavenging, hydrogen peroxide scavenging, ferric reducing, ferrous chelating, and hypochlorite scavenging.
• Quantification of polyphenol content in each extract.

Main Results:

• Rhodiola rosea exhibited superior antioxidant capacity across multiple assays (singlet oxygen, hydrogen peroxide, ferric reducing, ferrous chelating, protein thiol protection).
• Eleutherococcus senticosis showed the highest hypochlorite scavenging potential.
• Polyphenol content correlated positively with antioxidant activity, following the order: R. rosea > E. officinalis > E. senticosis.

Conclusions:

• Adaptogen extracts, particularly Rhodiola rosea, possess significant antioxidant properties.
• Polyphenol content is a key determinant of the antioxidant efficacy of these adaptogens.
• Supplementation with polyphenol-rich adaptogens may offer benefits against oxidative stress-related conditions.