Apocynum venetum extract, preparation method thereof and application thereof to cosmetics
A kind of apocynum extract and extract technology, applied in the field of apocynum extract and its preparation, to achieve the effects of cost saving, high content of active ingredients, and improvement of production capacity
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Embodiment 1
[0070] 10 kg of apocynum leaves (dry weight) are removed from impurities (vibrating grading sieve can be used), washed with water for 15 minutes; continuous countercurrent extraction is used, 160 kg of water is added, the extraction temperature is 45-50 °C, and the extraction time from feeding to discharging is controlled for 60 minutes. Obtain filtrate by coarse filtration equipment; Filtrate adds chitosan flocculant 0.1 kilogram, leaves standstill 5h, tube bundle centrifuge high-speed centrifugation, removes precipitation, obtains 120 kilograms of extract clear liquid; Vacuum concentration, concentration ratio is 6: 1 (v / v), D101 macroporous resin on the concentrated solution, washed with distilled water until colorless, eluted with 75% ethanol, and the eluent was detected to collect active ingredients, concentrated in vacuo, spray-dried to obtain 1.2 kg of apocynum extract, and detected total flavonoids Content 32.6wt%.
Embodiment 2
[0072] 100 kg of fresh leaves of Apocynum apocynum are removed from impurities (vibrating grading sieve can be used), washed with water for 15 minutes; continuous countercurrent extraction is used, 100 kg of water is added, the extraction temperature is 55-60 ° C, the extraction time is 45 minutes from feeding to discharging, and the extraction is carried out through coarse filtration. Equipment obtains filtrate; Filtrate adds chitosan flocculant 0.2 kilograms, leaves standstill 8h, tube bundle centrifuge high-speed centrifugation, removes precipitation, obtains extract clear liquid 150 kilograms; Vacuum concentration, concentration ratio is 5: 1 (v / v), Put the AB-8 macroporous resin on the concentrated solution, wash with distilled water until it is colorless, elute with 80% ethanol, detect and collect the active components in the eluent, concentrate in vacuo, and spray dry to obtain 1.4 kg of Apocynum apocynum extract, and detect the total flavonoid content 35.2 wt%.
Embodiment 3
[0073] Embodiment 3: the application of apocynum extract in cream cosmetics
[0074] Moisturizing lotion formula and production process:
[0075] mass percentage
[0076] Group A. 2-octyldodecanol 2
[0077] beeswax 1
[0078] Isooctyl stearate 5
[0079] Cetostearyl Polyglyceryl Ether 1.5
[0080] Sorbitan Glyceryl Monolaurate 0.8
[0081] Group B. Glycerol 3
[0082] Carboxymethyl hydroxypropyl cellulose 0.2
[0083] Polyacrylate 0.1
[0084] Methylparaben 0.3
[0085] Apocynum apocynum extract (prepared by embodiment 1) 1.5
[0086] Deionized water to 100
[0087] Group C.
[0088] Flavor Appropriate amount
[0089] Mix group A and heat to 75°C; mix group B and heat to 75°C. Under stirring, add group A to group B for emulsification, and add essence when the temperature drops to 45°C. After passing the test, it is packed.
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