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Natural oleuropein from olive leaf extract
General
The most popular dietary lipid in the Mediterranean diet is olive oil. Its beneficial effects are attributed to its unique fatty acid profile and to the presence of some minor components such as oleuropein. The main phenolic compound present throughout the olive tree (Olea europaea) is oleuropein. Ingrizo offers a natural oleuropein extracted from olive leaves.
Oleuropein is an ester of hydroxytyrosol, which is present in high amounts in the leaves of the olive tree. They confer to the tree protection against many plant pathogens because of its antibacterial activity. Oleuropein is hydrolysed in the digestive system into hydroxytyrosol which is then absorbed in the blood stream. Oleuropein has been identified as the most suitable precursor of hydroxytyrosol for incorporation into foods due to its greater stability during digestion and consequently higher bioavailability.
Characteristics
The oleuropein extracted from olive leaves is a high quality ingredient and available in different versions which are standardized to various oleuropein concentrations, ranging from 16 to 32 % (HPLC, Ph.Eur.). 32% oleuropein is amongst the highest to be reached on industrial scale today. It is a stable powder, very water soluble and hence easily bioavailable. A unique production process is used based on the extraction with water as the only solvent.
As such the oleuropein has following unique properties:
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Perfectly soluble in water, without any vegetable insoluble residue, completely ready-to-use
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Maximum extraction of oleuropein present in leaves
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Inhibition of any occurring oleuropein degradation
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Natural, free of organic solvents
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Better cost-in-use
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Microbiological certified quality to comply high food standards
Health claims
Experimental, clinical and epidemiological studies show the beneficial effects of olive leaf extract. These effects were attributed to its main phenolic component oleuropein. Olive leaf extract shows a wide range of pharmacological and health-promoting properties such as cardioprotective, neuroprotective, gastroprotective, hepatoprotective, anti-diabetes, among others, attributed to its antioxidant and anti-inflammatory effects.
The effect of olive leaf extract and oleuropein in some conditions has been evaluated in different clinical trials:
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Atherosclerosis: reduction of triglyceride level, improves lipid profiles
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Hypertension: lowering blood pressure
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Cardiovascular health: modulates vascular function
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Metabolic syndrome: improves glucose homeostasis in adults with type 2 diabetes
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Bone health: balances bone turn-over
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Ageing: improves antioxidant status
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Skin care
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Gut health
Applications
Natural oleuropein extracted from olive leaves can be used in several applications such as health and sports food (e.g. beverages), food supplements and nutraceutical formulations.
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