Eucalyptus globulus leaf extract, extracting method of Eucalyptus globulus leaf extract and application of Eucalyptus globulus leaf extract to cosmetics

Abstract

The invention discloses a Eucalyptus globulus leaf extract, an extracting method of the Eucalyptus globulus leaf extract and an application of the Eucalyptus globulus leaf extract to cosmetics. The content of flavone of the extract is higher than 20%. The specific extracting method includes the steps as follows: step 1, steam distillation is performed on Eucalyptus globulus leaves, and the essential oil component of the Eucalyptus globulus leaves is removed; step 2, an ethanol aqueous solution is added to Eucalyptus globulus leaf powder in the solid-liquid ratio ranging from 1:10 to 1:30, andextraction is performed at 40-80 DEG C; suction filtration and concentration are performed on an extract solution, and a brown concentrated solution is obtained; step 3, a chromatographic column is filled with macroporous resin, the brown concentrated solution is dropped into the chromatographic column from the upper part of the chromatographic column until light yellow appears in an effluent at the lower part; after the chromatographic column is left to stand for adsorption for 1 h, the chromatographic column is washed with deionized water until the effluent is colorless and transparent; step4, the chromatographic column is washed with the ethanol aqueous solution, the effluent is collected, the effluent washed with ethanol is combined, concentrated and dried, and then brown powder is obtained. According to the Eucalyptus globulus leaf extract, the extracting method and the application, the technology is simple, raw materials are easy to obtain, the cost is low, no toxic and harmfulreagents are used, the extraction ratio is high, and the extract is environment-friendly and is applicable to large-scale industrial production.

Description

technical field [0001] The present invention relates to a blue eucalyptus leaf extract, an extraction method of the extract and its application in the field of cosmetics, specifically a method of using ethanol aqueous solution as an extractant to carry out solvothermal extraction under certain conditions, and then carry out macroporous resin extraction. method of purification. The extract has whitening and anti-oxidation effects, and has no strong unpleasant smell, and has broad application prospects in the field of cosmetics. Background technique [0002] Blue eucalyptus (Eucalyptus globulus Labill.) is a large tree belonging to the genus Eucalyptus in the family Myrtaceae, which is widely planted in my country. It has a wide range of uses, and the wood has strong corrosion resistance and can be used for shipbuilding; the flower can be used as a nectar plant; the leaves have high oil content, and can be used to make white tree oil, which has a bactericidal effect. However...

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