Composite whitening composition as well as preparation method and application thereof
A composition and whitening technology, which is applied in the field of compound whitening composition and preparation, and can solve problems such as insignificant whitening effect
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[0035] The preparation method of the chizhi stem extract comprises the following steps:
[0036] Step 1: Spread the Chizhi on a sterilized stainless steel tray and dry it in a ventilated and dry place for 1-2 days;
[0037] Step 2: Break the dried red sesame described in step 1 into pieces with a size of 1 to 2 cm with a crusher;
[0038] Step 3: First add red sesame, ethanol and water into the stainless steel heating reflux pot according to the weight ratio of 1:2:1, turn on the heating, set the temperature to 98°C, cook under reflux for 2 hours, then lower the temperature, and wait for natural cooling to 50°C Filter, pour out the first decoction, leave the residue in the pot, repeat the decocting step of step 3, pour out the second decoction, combine the first and second decoction to obtain an extract.
[0039] Step 4: Filter the above extract with 200-mesh clean gauze. After the filtration is completed, transfer the filtrate to a rotary evaporator for vacuuming. Set the te...
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[0055] Embodiments of the present invention will be described in detail below in conjunction with Examples 1-3 and Comparative Examples 1-3, but those skilled in the art will understand that the following examples are only used to illustrate the present invention, and should not be considered as limiting the present invention range. Those who do not indicate the specific conditions in the examples are carried out according to the conventional conditions or the conditions suggested by the manufacturer. The reagents or instruments used were not indicated by the manufacturer, and they were all commercially available conventional products.
[0056] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terms used in the description of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the...
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