Lilac, also known as clove, belongs to the Myrtaceae family and is an evergreen tree. Clove stem oil is a yellow to light brown liquid that turns dark purple-brown when exposed to iron. It has the characteristic aroma of spices and eugenol. Below I will introduce the properties and functions of clove oil.
The properties and effects of clove oil
For the pharmacological effects, please see the article "Clove".
Nature and flavor: pungent; sweet; hot in nature
Returns to the spleen, stomach, and kidney meridian
Functions: Warming the stomach, lowering inverse syndrome, and dampening the kidneys. Mainly used for cold and distended stomach; hiccups; vomiting and diarrhea; numbness and pain; colic pain; bad breath; toothache.
Usage and dosage: Oral administration: drop a small amount into decoction or drink with wine.
External use: rub. Recipes for clove oil
1. Treat stomach cold, hiccups and vomiting: apply clove oil thoroughly.
2. To treat stomachache due to cold: clove oil, good wine and kimono.
3. Warm the Dantian and eliminate watery diarrhea: Apply clove oil to warm the navel.
4. Swelling: Apply clove oil to the navel.
5. Treat paralysis and pain: rub clove oil on the sore area.
6. Treat bad breath: brush your teeth with clove oil.
7. Antidote to crab poison: take one drop of clove oil with ginger soup. (1. The following is from "Supplements to the Compendium")
8. Treat toothache caused by tooth decay (non-inflammatory toothache): Dip a little clove oil into a small cotton ball and embed it in the cavity. Extraction of clove oil
(1) Extraction of clove oil by steam distillation
Crush the processed cloves with a small grain grinder. Accurately weigh a certain amount of dry clove powder and place it in a distillation flask, add a certain amount of water in proportion, connect the condenser tube, and start distillation. After the distillation is completed, transfer the obtained oil-water mixture to a separatory funnel and let it stand. , after separation, crude clove oil is obtained.
Add a certain amount of anhydrous ether to the crude clove oil, separate the water with a separatory funnel, and then treat it with anhydrous sodium sulfate to remove the ether in the clove oil under reduced pressure. , to obtain refined clove oil. The extraction rate of clove oil is 9.94%. The volatile oils are all light yellow oily liquids with the unique fragrance of cloves.
(2) The technological process of clove oleoresin extraction
Crush the cloves, weigh them accurately, wrap them in dry filter paper, put them into an Erlenmeyer flask, and add a certain amount in proportion The organic solvent is sealed, placed in a constant temperature water bath and left to stand at a certain temperature for different times, then the filter paper bag is taken out, the organic solvent is recovered, and clove oleoresin is obtained. Clove oleoresin is relatively viscous and the smell is not as strong as clove volatile oil.
(3) Supercritical CO2 extraction of clove oil