Resveratrol is a natural antioxidant that protects cells and tissues from oxidative damage by scavenging free radicals and quenching reactive oxygen species mediators. Resveratrol also activates sirtuin, a protein that repairs chromosomal health, prolongs cell survival and promotes cell regeneration and repair. In addition, resveratrol also has anti-inflammatory, anti-allergic and anti-mutagenic effects, which can resist DNA damage by reactive oxygen species mediators and prevent lipid peroxidation of cell membranes.
Resveratrol is found in high levels in red grape skins, red wine, and grape juice, so it is also commonly used in beauty and skincare products. Resveratrol can inhibit the formation of melanin, improve uneven skin tone and dark spots, and also increase elasticity and firmness, and reduce the appearance of fine lines and wrinkles. As a result, resveratrol is widely recognized as an effective anti-aging ingredient.
Let's talk about its production methods, mainly as follows.
1.Organic solvent extraction method: Resveratrol is extracted from plant materials by impregnation, reflux, Soxhlet extraction and other methods by using the characteristics of resveratrol that is easily soluble in organic solvents. Commonly used organic solvents are water, ether, methanol, ethanol, n-butanol, ethyl acetate and acetone. Among them, the acid alcohol method has a high efficiency in extracting resveratrol, and 60% 80% acidic ethanol is generally used for reflux extraction. Methanol extraction has the best extraction effect, the highest extraction rate, and less interference of impurity peaks when determined by high-performance liquid chromatography (HPLC).
2.Enzymatic extraction and transformation: Enzymatic hydrolysis extraction is an emerging technology for natural product extraction, enzymes can act on the cell wall to make it rupture and loose, reduce mass transfer resistance, and accelerate the release of active ingredients. Resveratrol enzymatic extraction conditions are mild and can reduce intermediate links, so it can improve raw material utilization and product yield.
3.New processes: New processes include supercritical fluid extraction technology, ultrasonic-assisted extraction technology, microwave-assisted extraction technology, etc. These new processes can greatly improve the extraction rate of resveratrol, reduce the extraction time, and shorten the production cycle.