There are 12 kinds of soybean isoflavones in soybean, which can be divided into 3 types, namely, daidzein, geniside, and yellow bean yhrin. There are 4 forms of free type, glucoside type, acetyl glucoside type, and C two acyl type. Soy isoflavones are white or yellowish powder.
Soluble isoflavones in the weak polar solvents, such as acetone, methanol, ethanol and ethyl acetate, are the most water-soluble, and are basically insoluble in water.
Soybean isoflavones are a kind of secondary metabolites formed during the growth of soybean.
With the advancement of aging research, anti-aging methods, anti-aging food and drug research are also developing. Soybean isoflavones are one of them.
Anti aging effect of soybean isoflavone
Soybean isoflavone has strong antioxidant effect, it can remove reactive oxygen radicals in human body, protect human body lipids, proteins, chromosomes from the attack of reactive oxygen species, reduce the production of lipid peroxide, so it can prevent cells from pathological changes, postpone human tissue aging and produce anti organism aging effect.
With the increase of age, the antioxidant enzymes in the human body fall, the free radicals accumulate too much, and the fatty acids form peroxide, causing cell membrane damage, causing disease and aging. Reducing the level of oxidation in the body or enhancing the level of internal antioxidant is very necessary for inhibiting the oxidation of LDL and reducing its aging.
Soy isoflavones are comparatively new in regards to cosmetic use, however, studies show they have multiple skin-benefitting properties.Isoflavones are structurally similar to estrogens and can activate estrogen signaling pathways, including collagen synthesis, to improve skin elasticity, reduce the appearance of fine lines and wrinkles, and increase tissue hydration.Additionally isoflavones are powerful antioxidants that can halt and reverse the appearance of aging due to free radicals caused by sunlight and other environmental hazards.As such, soy isoflavones are useful in reducing redness of the skin and decreasing the appearance of dark spots.These properties make soy isoflavones ideal for use in anti-aging, moisturizing, and skin protecting creams.
About Soy Isoflavones in DIY Skin Care
Aging in post-menopausal women is closely associated with decreased levels of hormones including the female sex hormone estrogen. Studies of these women indicate that the decrease in estrogen is associated with changes in the skin such as dryness, dermal atrophy, reduced mechanical tension, and the increased appearance of fine lines and wrinkles due to a decline in dermal collagen content. Such changes in the skin are potentiated by photoaging, which results from UV-induced oxidation in the skin. Damage from UV irradiation can also cause increased expression of matrix metalloproteinases [MMPs] in the skin, including MMP-1, MMP-2, MMP-3, and MMP-9 . These proteinases degrade the collagen network in the skin and thus contribute to the aged appearance.
Soy isoflavones are phytoestrogens, or plant-derived estrogens, which can bind to estrogen receptors and initiate signaling pathways related to maintaining dermal integrity. Particularly of interest, soy isoflavones can elicit such responses in the skin but do not increase the risk of uterine or breast cancers unlike most other estrogen replacement therapies. Independently of their estrogen receptor-binding abilities, soy isoflavones are powerful antioxidants capable of neutralizing and reversing photoaging effects.
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