Method for extracting rose essential oil, pigment and flavone from roses simultaneously and application of extracts
A technology of rose extract and rose essential oil, applied in the field of medicine and chemical industry, can solve problems such as unscientific, loss of effective components, changes, etc., and achieve the effects of low equipment requirements, long-lasting fragrance, and wide application range
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Embodiment 1
[0032] A method for simultaneously extracting rose essential oil, pigments and flavonoids from roses, comprising the following steps:
[0033] Step (1), preparation of rose essential oil:
[0034] Add 10 times the mass of salt water with a mass concentration of 10% to the rose, and use steam distillation after immersion for 3 days. Distillation can be stopped when there is no fragrance in the output liquid or no oil drops appear when the condensate is dropped on the glass plate; the distillate is cooled, separated into layers, and the upper layer is taken, which is rose essential oil, which is stored in a refrigerator at 3°C;
[0035] Step (2), preparation of rose extract:
[0036] Filter the material in the distillation still after step (1), take the filter residue, and carry out reflux extraction with a mixture of 0.1mol / L hydrochloric acid and 70% ethanol. In the mixture, 0.1mol / L hydrochloric acid and 70% The volume ratio of ethanol is 1:1000, the extraction temperature ...
Embodiment 2
[0042] A method for simultaneously extracting rose essential oil, pigments and flavonoids from roses, comprising the following steps:
[0043] Step (1), preparation of rose essential oil:
[0044] Add 50 times the mass of salt water with a mass concentration of 15% to the rose, and use steam distillation after immersion for 5 days. Distillation can be stopped when there is no fragrance in the liquid or no oil drops appear when the condensed liquid is dropped on the glass plate; the distillate is cooled, separated into layers, and the upper layer is taken, which is rose essential oil, which is stored in a refrigerator at 4°C;
[0045] Step (2), preparation of rose extract:
[0046] Filter the material in the distillation still after step (1), take the filter residue, and carry out reflux extraction with a mixture of 0.1mol / L hydrochloric acid and 70% ethanol. In the mixture, 0.1mol / L hydrochloric acid and 70% The volume ratio of ethanol is 1:1000, the extraction temperature i...
Embodiment 3
[0052] A method for simultaneously extracting rose essential oil, pigments and flavonoids from roses, comprising the following steps:
[0053] Step (1), preparation of rose essential oil:
[0054] Add 30 times the mass of salt water with a mass concentration of 13% to the rose, and use steam distillation after immersion for 34 days. Distillation can be stopped when the effluent has no fragrance or the condensed liquid drops on the glass plate and no oil drops appear; the distillate is cooled, layered, and the upper layer is taken, which is rose essential oil, which is stored in a refrigerator at 3.5°C;
[0055] Step (2), preparation of rose extract:
[0056] Filter the material in the distillation still after step (1), take the filter residue, and carry out reflux extraction with a mixture of 0.1mol / L hydrochloric acid and 70% ethanol. In the mixture, 0.1mol / L hydrochloric acid and 70% The volume ratio of ethanol is 1:1000, the extraction temperature is 55°C, the extraction ...
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