Plant extract composition and application thereof in whitening cosmetics

Abstract

The invention discloses a plant extract composition. The plant extract composition is prepared by mixing a paullinia cupana fruit extract and lycium barbarum polysaccharide according to a mass ratio of 1:(1-5). A preparation method of the paullinia cupana fruit extract comprises the following steps: (1) paullinia cupana fruits are dried and crushed, an ionic liquid ethanol solution is added, aftersealed infiltration is conducted for 1-2 h, a 30-50 V / V% ethanol solution is added, heating is conducted to achieve the reflux temperature, reflux extraction is conducted for 1-2 hours, filtering isconducted, filtrate is collected, and concentrating is conducted to obtain a crude extract; and (2) the crude extract is diluted with a proper amount of water, hydrochloric acid is added to adjust a pH value to 2.0-5.0, extracting with diethyl ether is conducted for 2-3 times, organic phases are combined, concentrating under reduced pressure is conducted, and drying is conducted. Compared with theprior art, a smaller amount of paullinia cupana fruits is adopted, so that the production cost is reduced, and the technical effect of better inhibiting tyrosinase activity is further achieved.

Description

Technical field[0001]The invention relates to the field of daily cosmetics, in particular to a plant extract composition and its application in whitening cosmetics.Background technique[0002]Ionic liquid is also called low-temperature molten salt. It is a new type of green organic solvent. It is a salt composed of anions and cations in a liquid state at or near room temperature. As ionic compounds, ionic liquids are composed of specific, relatively large, structurally asymmetric organic cations and relatively small inorganic anions. Common cations include quaternary ammonium salt ions, quaternary phosphonium salt ions, imidazolium salt ions, and Pyrrole salt ions, etc., anions include halogen ions, tetrafluoroborate ions, and hexafluorophosphate ions. Ionic liquids have the characteristics of good thermal and chemical stability, wide viscosity range, good adjustability and solubility. It not only reduces the pollution to the environment, but also destroys the structure of cellulose, ...

AI Technical Summary

Problems solved by technology

Simultaneously, although many natural plant extracts with inhibitory tyrosinase activity have been disclosed in the prior art, they can be applied to the preparation of cosmetics with whitening effect, but the consumption of these natural plant extracts in cosmetics is relatively high, resulting in the The production cost is high, and the whitening activity of natural plant extracts still needs to be further improved

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