Olive leaf is the leaf of the olive tree (Olea europaea). Although olive oil is well known for its flavor and possible health benefits, the leaf and its extracts remain under research with effects on human health.
Olive phenolics are much more concentrated in the leaves compared with olive fruit or olive oil: 1450 mg total phenolics/100 g fresh leaf vs. 110 mg/100 g fruit and 23 mg/100 ml extra virgin olive oil. The primary active compounds in unprocessed olive leaf are oleuropein and hydroxytyrosol, as well as polyphenols and flavonoids, including luteolin, rutin, caffeic acid, catechin and apigenin. Elenolic acid is a component of olive oil and olive leaf extract. It can be considered as a marker for maturation of olives. Oleuropein, together with other closely related compounds such as 10-hydroxyoleuropein, ligstroside and 10-hydroxyligstroside, are tyrosol esters of elenolic acid. The phenolic composition of olive leaf extract varies according to plant variety, harvesting season and method, leaf maturity, storage conditions and extraction method.
Skin care product
The high content of olein is mainly used in skin care products, which can protect skin cells from the damage of ultraviolet rays, effectively maintain the skin’s tenderness and elasticity, and achieve the efficacy of skin, skin and skin.Microherb’s high content of olivine is 80% specially designed for skin care, with high effective ingredients and light color, which is suitable for cosmetic formulation design.
It is applied to protect the olive leaf essence of skin care – anti-oxidation and repairing effect, as follows:
- Protection – antioxidation – maintain the viability of skin cells.
Ultraviolet light can cause the formation of free radicals, which can harm skin cells and even the death of cells in the morning.Suppose to exposed skin cells Yu Guangzhao, look at the cutin cell with the change of fiber cells, some with pure olive leaves extract, others do not, 24 hours after their conditions of cells, and found that: with pure olive leaf extract cells almost preserved intact.
- Protection – antioxidant reaction.
Ultraviolet light also causes the lipid decomposition of the cell membrane, which is called peroxidation.The skin fibroblast culture environment, some have pure olive leaf essence, others not.A special substance secreted during the decomposition process was then measured to measure the degree of peroxidation reaction.Experimental results show that the pure olive leaf extract can effectively organize the peroxidation reaction, thus protecting the fiber cells highly.
3, repair – promote for collagen protein metabolism – promote for collagen protein synthesis in the process of skin aging, gradually decline for collagen protein synthesis, protein fiber cells can only generate a small amount of glue yuan.We measure for collagen protein synthesis in the cell culture environment to promote degree, some joined the pure olive leaves extract, others are not, in the quantity of proline (an amino acid) as the index of the new synthesis for collagen protein.The experimental results showed that the olive leaf extract could significantly promote the production of collagen protein in fibroblasts.
4, fight glycan reaction Hydrolysis reaction is a reaction in the cell membrane, it can cause collagen network knot, thus lose for collagen protein its elasticity, the skin with a depressed, that is, the appearance of wrinkles.This phenomenon increases with age.After eight days of incubation in 37C, the derivatives of the polysaccharide reaction were detected by fluorescence analysis, which was formed between lysine and glucose-6-phosphate (ester) enzymes.This experiment was also conducted with the addition of pure olive leaf essence and the absence of pure olive leaves, demonstrating its important role in the anti-polysaccharide reaction.
5, – resistance to enzymatic adhesive glue yuan yuan enzymes are fiber cells under the influence of free radicals generated by an enzyme – under ultraviolet light, cutin cell can release some information, thus stimulating for collagen fiber cells enzymes.Add pure olive leaf essence to the keratinocyte medium and place it under UVA and UVB rays.After respectively in fiber cells culture medium after sampling, the results prove: pure olive leaf extract inhibit cutin cell “information”, caused by ultraviolet indirectly reduce the glue yuan enzyme secretion.
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