Sage’s parts have many notable plant-derived chemical compounds, essential oils, mineralsand vitamins that are known to have disease preventing and health promoting properties.
The prime biologically active component of common sage appears to be its essential oil, which chiefly contains ketones; α-thujone and β-thujone. In addition, sage leaf contains numerous other compounds, including cineol, borneol, tannic acid, bitter substances like cornsole and cornsolic acid, fumaric, chlorogenic, caffeic and nicotinic acids, nicotinamide, flavones, flavone glycosides and estrogenic substances. Altogether, these compounds are known to have counter-irritant, rubefacient, anti-inflammatory, anti-allergic, anti-fungal and antiseptic.
Thujone is GABA and Serotonin (5-HT3) receptor antagonist. It improves mental concentration, attention-span and quickens the senses. Hence, sage infusion has long been recognized as “thinker’s tea”.
It is very rich source of several B-complex groups of vitamins, such as folic acid, thiamin, pyridoxine and riboflavin; many times higher than the recommended daily dosage.
The herb contains very good amounts of vitamin-A and beta-carotene levels. 100 g dry ground herb provides 5900 IU, about 196% of RDA. Vitamin-A is a powerful natural antioxidant and is essential for night-vision. It is also required for maintaining healthy mucus membranes and skin. Consumption of natural foods rich in vitamin A are known to help the body protect from lung and oral cavity cancer.
Its leaves are a good source of antioxidant vitamin, vitamin C; contain 32.4 or 54% of RDA. Vitamin C helps in the synthesis of structural proteins like collagen. Its adequate levels in the body help maintain integrity of blood vessels, skin, organs, and bones. Regular consumption of foods rich in vitamin C helps protect from scurvy, develop resistance against infectious agents (boosts immunity) and scavenge harmful, pro-inflammatory free radicals from the body.
Whether fresh or dried, is a rich source of minerals like potassium, zinc, calcium, iron, manganese, copper, and magnesium. Potassium is an important component of cell and body fluids, which helps control heart rate and blood Manganese is used by the body as a co-factor for the antioxidant enzyme, superoxide dismutase.
The essential oil obtained from sage has been found to have acetylcholinesterase (Ach) enzyme inhibition activities. This helpsthe rise of Ach’s levels in the brain. Ach enzyme improves concentration and may play a role in the treatment for memory loss associated with the disease like Alzheimer‘s.
Sage herb oil is also being used externally as a rubefacient to soothe painful ailments like muscle stiffness, rheumatism and neuralgic conditions.
Its oil is used as blended massage-oil and in the aromatic therapy. It helps relieve nervousness, anxiety, headaches, stress, and fatigue.