A whitening composition containing coix seed fermented liquid
Coix seed and composition technology, applied in the field of whitening composition, can solve the problems of single whitening effect, insufficient effect, high preparation cost, etc., and achieve the effect of increased whitening effect, long-lasting effect, and promotion of synthesis
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Embodiment 1
[0048] The preparation of embodiment 1 coix seed fermented liquid
[0049] According to the preparation method recorded in the priority application 201711165203.6, the coix seed fermented liquid with high γ-aminobutyric acid content was prepared:
[0050] Step 1, weigh 15-25g of skimmed milk powder and add it to 100-250mL of warm boiled water, stir and disperse evenly, after the temperature cools below 40°C, add 0.5-1.0g of yogurt fermented bacteria powder (containing Streptococcus thermophilus, Bulgarian milk Bacillus, purchased from Beijing Chuanxiu Technology Co., Ltd.), stirred and dispersed evenly, cultured and fermented in a sealed manner until curdled milk was formed and the yogurt flavor was emitted, and the coix seed starter was made;
[0051] Step 2, wash the coix seed with water and dry it, then crush it through a 20-100 mesh sieve; weigh 150-200g coix seed powder and add it to 1.0L deionized water, stir to disperse, add liquefaction enzyme (purchased from Angel Yea...
Embodiment 2
[0053] The preparation of embodiment 2 whitening freeze-dried powder
[0054] In this example, a whitening freeze-dried powder containing coix seed fermented liquid, blue copper peptide and collagen was prepared.
[0055] The preparation method is as follows:
[0056] Take 0.03 g of blue copper peptide (purchased from Jitai Biotechnology Co., Ltd., production batch number 20170620), and then add 1.0 g of coix seed fermented liquid prepared in Example 1 and 0.015 g of macromolecular collagen (purchased from Guangzhou Xiangbo Biotechnology Co., Ltd., Molecular weight 100,000-300,000 Daltons), add water to make up to 3.0g, mix well, put in vials, freeze-dry at low temperature, and make whitening freeze-dried powder.
Embodiment 3
[0057] Example 3 Whitening ability test of whitening freeze-dried powder
[0058] Referring to the methods in the literature (Yan Hang, Tang Ting, Gui Hui, etc. The inhibitory effect of coicis extract on tyrosinase. Chinese patent medicine, 2013, 35(4): 696-699), through the detection of whitening freeze-dried powder (this Invention Example 2 preparation) on the inhibition of mushroom tyrosinase activity in vitro, according to the degree of solution fading and enzyme inhibition stoichiometry, quantitative analysis was carried out by spectrophotometry.
[0059] Method: Mix 0.5 mL of 30 mg / mL whitening lyophilized powder aqueous solution and 30 mg / mL arbutin aqueous solution (as a positive control) with 200 U mushroom tyrosinase, make up to 2.5 mL with PBS buffer, 37 Incubate at °C for 10 min, add 0.5 mL of L-tyrosine (purchased from Sigma), incubate at 37 °C for 15 min, and immediately detect the absorbance at 475 nm. In the experiment, the negative control was replaced with P...
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