Natural anti-aging skin care product containing black tea extracts and preparation method thereof
A dark tea extract, anti-aging technology, applied in the field of skin care products, can solve problems such as insignificant efficacy and hidden safety hazards, and achieve the effects of preventing oxidative stress products, preventing skin aging, and enhancing bioavailability
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Embodiment 1
[0048] 1. The preparation of black tea extract:
[0049] Dark tea extract is prepared from black brick tea as raw material through crushing, leaching, filtration, fine filtration, reverse osmosis concentration, single-effect concentration, and spray drying. The specific preparation method is: crush the brick tea to 80 mesh particles, At a temperature of 45°C, the particles and deionized water were leached in a countercurrent extraction processor for 25 minutes according to a weight-to-volume ratio of 1:15, and filtered to obtain filtrate I and filter residue; at a temperature of 50°C, according to 1: The weight-to-volume ratio of the above-mentioned filter residue and deionized water was leached in a countercurrent extraction processor for 30 minutes, and the filtrate II was filtered, and the filtrate I and the filtrate II were combined and filtered with a 400-mesh screen to obtain the extract; The fine filtration step is as follows: the above-mentioned extract is finely filte...
Embodiment 2
[0054] 1. The preparation of black tea extract:
[0055] Dark tea extract is prepared from black brick tea as raw material through crushing, leaching, filtration, fine filtration, reverse osmosis concentration, single-effect concentration, and spray drying. The specific preparation method is: crush the brick tea to 100 mesh particles, At a temperature of 45°C, the particles and deionized water were leached in a countercurrent extraction processor for 30 minutes according to a weight-to-volume ratio of 1:20, and filtered to obtain filtrate I and filter residue; at a temperature of 50°C, according to 1: The weight-to-volume ratio of the above filter residue and deionized water was leached in a countercurrent extraction processor for 15 minutes, filtered to obtain filtrate II, and the filtrate I and filtrate II were combined and filtered with a 400-mesh screen to obtain the extract; The fine filtration step is: finely filter the above extract through an ultrafiltration membrane u...
Embodiment 3
[0060] 1. The preparation of black tea extract:
[0061] Dark tea extract is prepared from black brick tea as raw material through crushing, leaching, filtration, fine filtration, reverse osmosis concentration, single-effect concentration, and spray drying. The specific preparation method is: crush the brick tea to 60 mesh particles, At a temperature of 45°C, the particles and deionized water were leached in a countercurrent extraction processor for 15 minutes according to a weight-to-volume ratio of 1:15, and filtered to obtain filtrate I and filter residue; at a temperature of 50°C, according to 1: The weight-to-volume ratio of the above-mentioned filter residue and deionized water was extracted in a countercurrent extraction processor for 15 minutes, and the filtrate II was filtered, and the filtrate I and the filtrate II were combined and filtered with a 400-mesh screen to obtain the extract; The fine filtration step is as follows: the above extract is finely filtered thro...
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