Water lily flower extract as well as preparation method and application thereof
A water lily flower and extract technology, applied in the field of plant extraction, can solve the problems of unreported, product development and development, etc., achieve strong anti-oxidation and anti-wrinkle ability, reduce skin pigmentation, and stable quality
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Embodiment 1
[0061] 1. Preparation method: 1 kg of dried water lily petals with a moisture content of ≤10% (measured according to the direct drying method of GB 5009.3-2016, if the moisture content does not meet the requirements, continue to be dried at 40°C) as 1g: 40mL feed solution Ratio, add 70% (v / v) ethanol aqueous solution, control temperature is 45 ℃, at ultrasonic frequency 400kHz, ultrasonic intensity 10W / cm 2 , Carry out leaching for 2h to fully extract and let stand for 24h. The extract was separated from the water lily precipitate by centrifugation, using 1mol / L Na 2 CO 3 The solution adjusts the pH of the extract to be 8 to be alkaline. Ethanol is recovered by evaporation under reduced pressure to obtain a concentrated solution, which is then freeze-dried to obtain water lily flower extract.
[0062] 2. Analyze the quality and composition of the obtained extract, and the identification results are as follows: Figure 1-13 The specific data are shown in Table 1. The above...
Embodiment 2
[0064] Preparation method: 1 kg of dried water lily petals with a moisture content ≤ 10% (measured according to the direct drying method of GB 5009.3-2016, if the moisture content does not meet the requirements, continue to be baked and dried at 40°C) according to the ratio of 1g: 40mL solid-liquid, Add 65% (v / v) methanol aqueous solution, control the temperature at 45°C, at ultrasonic frequency 400kHz, ultrasonic intensity 10W / cm 2 , Carry out leaching for 2h to fully extract and let stand for 24h. Separate the extract from the water lily precipitate by filtration using 1 mol / L NaHCO 3 The solution was adjusted to pH 7. Methanol was recovered by evaporation under reduced pressure to obtain a concentrated solution, which was freeze-dried to obtain water lily flower extract. The quality and composition of the obtained extract were analyzed, and the specific data are shown in Table 1.
Embodiment 3
[0066] Preparation method: 1 kg of dried water lily flower buds with a moisture content ≤ 10% (measured according to the direct drying method of GB 5009.3-2016, if the moisture content requirements are not met, continue to be dried at 40°C) according to the ratio of 1g: 60mL of solid to liquid, Add 80% (v / v) n-butanol aqueous solution, control the temperature at 60°C, at ultrasonic frequency 400kHz, ultrasonic intensity 10W / cm 2 , Carry out leaching for 2h to fully extract and let stand for 24h. The extract was separated from the water lily precipitate by filtration, and the pH was adjusted to 9 with 2mol / L NaOH solution. The n-butanol was recovered by evaporation under reduced pressure to obtain a concentrated solution, which was freeze-dried to obtain the water lily flower extract. The quality and composition of the obtained extract were analyzed, and the specific data are shown in Table 1.
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