Olive leaf extract and cosmetics containing same
A technology of olive leaf extract and cosmetics, applied in the field of chemistry, can solve the problems of insufficient research on the mechanism of action and few applications
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Embodiment 1-4
[0071] Wash the freshly picked olive leaves twice with clean water, inject chlorine dioxide with a concentration of 100ppm into the clean water, wash and sterilize the olive leaves, and dry the washed olive leaves with hot air at 65°C to obtain a water content of 5 % less dry olive leaves, and the prepared dry olive leaves are pulverized and set aside.
[0072] Take 10 kg of crushed dry olive leaves, add a certain volume of 50% aqueous methanol as a solvent, and extract 3 times at 65°C and 1.01MPa for 2 hours each time. After the extraction is completed, mix the extracts each time to obtain The extracts were mixed, and the mixed extracts were rotatively evaporated at 5kPa and slightly boiling for 0.5h to remove methanol therein to obtain a concentrated solution.
[0073] Use 1M hydrochloric acid to adjust the concentrated solution to pH = 4, use the concentrated solution to purify by glass column chromatography, and then use a mixed solution with a volume ratio of methanol:eth...
Embodiment 5-13
[0079] Wash the freshly picked olive leaves twice with clean water, inject chlorine dioxide with a concentration of 100ppm into the clean water, wash and sterilize the olive leaves, and dry the washed olive leaves with hot air at 65°C to obtain a water content of 5 % less dry olive leaves, and the prepared dry olive leaves are pulverized and set aside.
[0080] Take 10 kg of crushed dry olive leaves, add 10 times the volume of solvent to it, and extract 3 times at 110°C and 1.5 MPa, each time for 2 hours. After the extraction is completed, mix the extracts each time to obtain a mixed extract. The mixed extracts were rotary evaporated for 0.5 h under 5kPa and slight boiling conditions to obtain a concentrated solution.
[0081] Use 0.8M sulfuric acid to adjust the pH value of the concentrated solution to 3, and use D-101 macroporous adsorption resin to absorb the concentrated solution at 40°C for 2 hours, the adsorption is saturated, and then use different concentrations of eth...
Embodiment 14-18
[0088] Wash the freshly picked olive leaves twice with clean water, inject chlorine dioxide with a concentration of 100ppm into the clean water, wash and sterilize the olive leaves, and dry the washed olive leaves with hot air at 65°C to obtain a water content of 5 % less dry olive leaves, and the prepared dry olive leaves are pulverized and set aside.
[0089] Take 10 kg of crushed dry olive leaves, add 10 times the volume of deionized water as a solvent, extract 3 times at 65°C under different pressures, each time for 2 hours, after the extraction is completed, mix the extracts each time to obtain a mixed The extract, and the mixed extract were rotatively evaporated for 0.5h under 5kPa and micro-boiling conditions to remove methanol therein to obtain a concentrated solution.
[0090] Use 0.8M sulfuric acid to adjust the pH value of the concentrate to 3, purify the concentrate using glass column chromatography, and then use a mixed solution with a volume ratio of methanol:eth...
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