Whitening composition, preparation method and application
A composition and whitening technology, applied in the field of skin care products, can solve problems such as weak absorption ability, achieve the effects of reduced formation, enhanced repair and anti-aging effect, and enhanced delivery ability
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preparation example Construction
[0027] Wherein, the preparation method of black tea fruit extract comprises the following steps:
[0028] Step 1: First weigh the clean black tea seeds according to the weight ratio: ethanol: water = 1:2:1 and add it to the stainless steel heating reflux pot, turn on the heating, set the temperature to 98°C, and reflux cooking for 2 hours , then lower the temperature, and wait for natural cooling to about 50°C for filtration.
[0029] Step 2: Filter the above extract with 200-mesh clean gauze. After the filtration is completed, transfer the filtrate to a rotary evaporator, vacuumize, and set the temperature at 62°C for low-temperature distillation. When the filtrate is evaporated to 20% remaining, add and The first step is the same amount of butanediol, and stir evenly.
[0030] The third step: transfer the mixed solution of the second step to the rotary evaporator in batches, then vacuumize, set the temperature to 58°C, continue to evaporate the remaining ethanol, and then t...
specific Embodiment
[0045] 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.
[0046] According to the content of each component in Table 1 below, the whitening essences of Examples 1-3 and Comparative Examples 1-3 were prepared in parts by total weight.
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[0050] Table 1
[0051] The preparation method of the whitening essence in the above-mentioned Examples 1-3 and Comparative Examp...
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