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Volatile oil

Volatile oil

A substance of oily consistency and feel, derived from a plant and containing the principles to which the odour and taste of the plant are due (essential oil); in contrast to a fatty oil, a volatile oil evaporates when exposed to the air and thus is capable of distillation; it may also be obtained by expression or extraction; many volatile oils, identical to or closely resembling the natural oils, can be made synthetically. Volatile oils are used in medicine as stimulants, stomachics, correctives, carminatives, and for purposes of flavoring (e.g., peppermint oil).

Synonym: ethereal oil.


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MALDI; fusion protein cleaving from a peptide

You have lot's of non-volatile substances, which may cause troubles in mass spec. But I'm not expert in this area. Do you have linear or reflected TOF? Because you could be at the limit of your machine with 3 kDa. Anyway, I would rather ...

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by JackBean
Wed Mar 28, 2012 11:20 pm
 
Forum: Molecular Biology
Topic: MALDI; fusion protein cleaving from a peptide
Replies: 6
Views: 2209

Re: Theories - Origin of Life

... because the spark was in the atmosphere and he'd used up all of the chemicals with carbon in the atmosphere, and the amino acids, which aren't volatile — they don't fly, so to speak — were safely ensconced in the water solution, and the water solution was a collection of non-volatile compounds, ...

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by scottie
Mon Oct 03, 2011 2:24 pm
 
Forum: Evolution
Topic: Theories - Origin of Life
Replies: 562
Views: 929208

inventing basic lab protocols

... by Bradford's, leaf pigments, DNA conc.) 6) Destilation (clove's volatile oil isolation) 7) Work with gases and glass (determination of CaCO3 in egg shell) 8) Drying ...

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by JackBean
Wed Apr 20, 2011 3:40 pm
 
Forum: General Discussion
Topic: inventing basic lab protocols
Replies: 0
Views: 1408

Re: DUMAS METHOD OF DETERMINING MOLAR MASS OF A VOLATILE LIQUID

Thanks for all your input guys. I am just finishing my lab report right now. This is off topic, but do you guys know a good website where I could get some lab gear, more specifically a light microscope? Thanks.

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by Darwin420
Wed Oct 22, 2008 5:47 pm
 
Forum: General Discussion
Topic: DUMAS METHOD OF DETERMINING MOLAR MASS OF A VOLATILE LIQUID
Replies: 11
Views: 26294

Re: DUMAS METHOD OF DETERMINING MOLAR MASS OF A VOLATILE LIQUID

Yes, the whole point was to convert the methanol into a gas, that is why we are using this equation in the first place. The volume I am using in these equations are the volume of the flasks we have been using not the volume of the methanol. When it comes to molarity we weren't given it in this exper...

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by Darwin420
Mon Oct 20, 2008 8:56 pm
 
Forum: General Discussion
Topic: DUMAS METHOD OF DETERMINING MOLAR MASS OF A VOLATILE LIQUID
Replies: 11
Views: 26294
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