Essential Oils yog dab tsi?

Feem ntau cov roj tseem ceeb tau txais los ntawm Chav Distillation.Nrog rau txoj kev no cov dej yog boiled nyob rau hauv ib lub lauj kaub, thiab cov chav txav mus los ntawm cov khoom cog uas raug tshem tawm saum lub lauj kaub dej, sau cov roj thiab ces khiav los ntawm ib tug condenser uas tig lub chav rov qab mus rau hauv dej.Cov khoom kawg yog hu ua distillate.Distillate muaj hydrosol thiab tseem ceeb roj.

Cov roj tseem ceeb, kuj paub thiab ethereal roj los yog volatile roj, yog aromatic concentrated hydrophobic volatile kua muab rho tawm los ntawm cov nroj tsuag.Cov roj tseem ceeb yog muab rho tawm los ntawm paj, nplooj, stems, bark, noob los yog keeb kwm ntawm shrubs, bushes, tshuaj ntsuab thiab ntoo.Cov roj tseem ceeb muaj cov yam ntxwv tsw qab lossis cov ntsiab lus ntawm cov nroj tsuag uas tau muab rho tawm.

Hauv lwm lo lus, cov roj tseem ceeb yog cov ntsiab lus uas tau muab rho tawm los ntawm paj, paj, nplooj, hauv paus, tawv ntoo, txiv hmab txiv ntoo, resins, noob, koob, thiab twigs ntawm cov nroj tsuag lossis tsob ntoo.

Cov roj tseem ceeb muaj nyob hauv cov hlwb tshwj xeeb lossis cov qog ntawm cov nroj tsuag.Lawv yog vim li cas qab cov ntxhiab tsw thiab tsw ntawm txuj lom, tshuaj ntsuab, paj thiab txiv hmab txiv ntoo.Nws yog qhov nthuav kom nco ntsoov tias tsis yog txhua cov nroj tsuag muaj cov tshuaj tsw qab no.Raws li tam sim no, nyob ib ncig ntawm 3000 cov roj tseem ceeb tau paub, tawm ntawm ib puag ncig 300 suav tias yog kev lag luam tseem ceeb.

Cov roj tseem ceeb yog volatile thiab evaporate sai heev thaum raug huab cua.Feem ntau ntawm cov roj yam tseem ceeb tsis muaj xim tshwj tsis yog rau ob peb yam xws li cinnamon tseem ceeb roj uas yog xim liab, camomile uas yog xiav thiab wormwood tseem ceeb roj uas muaj xim ntsuab.Ib yam li ntawd, feem ntau ntawm cov roj tseem ceeb yog sib dua li dej tshwj tsis yog rau ob peb yam xws li cinnamon tseem ceeb roj, qej tseem ceeb roj thiab iab almond tseem ceeb roj.Cov roj tseem ceeb feem ntau yog kua, tab sis tuaj yeem ua tau zoo (orris) lossis ib nrab khoom raws li qhov kub thiab txias (nce).

Cov roj tseem ceeb yog cov muaj pes tsawg leeg thiab muaj ntau pua cov khoom sib txawv thiab cov tshuaj sib txawv xws li cawv, aldehydes, ethers, esters, hydrocarbons, ketones, thiab phenols ntawm pawg mono- thiab sesquiterpenes lossis phenylpropanes nrog rau cov lactones thiab waxes uas tsis yog-volatile.