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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

Active Publication Date: 2022-05-13
ZHEJIANG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005]Current reports on the skin care efficacy of water lily are only the research on the activity of enzymes related to whitening in vitro, and the research and development of related products have not been reported
And there is no report on the effect of water lily flower extract on anti-aging skin

Method used

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  • Water lily flower extract as well as preparation method and application thereof
  • Water lily flower extract as well as preparation method and application thereof
  • Water lily flower extract as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

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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Abstract

The invention discloses a water lily flower extract as well as a preparation method and application thereof, and belongs to the technical field of plant extraction. The preparation method comprises the following steps: (1) adding a dried nymphaea tetragona flower product into an organic solvent aqueous solution with the volume ratio of 50%-90% according to the solid-liquid ratio of 1g: 20mL-60mL, extracting at the temperature of 20-65 DEG C, and separating to obtain an extracting solution; and (2) adjusting the pH value of the extract to 7-9, then removing the organic solvent, and drying to obtain the nymphaea candida presl extract. By means of the technology, efficient enrichment and extraction of skincare functional components in the nymphaea candida presl are achieved, and the content of main components ellagic acid and isoquercitrin in the extract is relatively high. The extract has strong oxidation resistance and wrinkle resistance, and has great application prospects in the fields of cosmetics, food, medical products and the like.

Description

technical field [0001] The invention relates to the technical field of plant extraction, in particular to a water lily flower extract and a preparation method and application thereof. Background technique [0002] Water lily (Nymphaea tetragona Georgi.) is a perennial aquatic herb of the genus Nymphaea, widely distributed in temperate and tropical regions. Water lilies have large flowers that float on or above the water's surface. The petals are white, yellow, pink or blue. This genus grows mostly in ponds and is also the most widely distributed genus in the Nymphaeaceae family. At present, there are about 35 kinds of water lilies in the world. Water lilies are cultivated in various provinces and regions in China. The flower owners are for viewing. Most of them wither and rot with the end of the flowering period and become pond nutrient waste. It is worth mentioning that water lily has a long edible history. Studies have shown that in addition to conventional nutrients s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K8/9789A61Q19/00A61Q19/08A61Q19/02A61Q17/04A23L33/105
CPCA61K8/9789A61Q19/00A61Q19/08A61Q19/02A61Q17/04A23L33/105A61K2800/82A61K2800/84A23V2002/00A23V2200/318
Inventor 陆柏益陈祁张大勇刘芸芸吴礼鹏朱宇航骆靖阳汪怿璇黄伟素
Owner ZHEJIANG UNIV
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