[curiouscat]

I'm looking at a Flavoring Substance Spec. at the UN-Food & Agricultural Organization website which says "Assay min %" as 97%. (for Benzylcarbinyl butyrate)

But no method is specified. In such cases is there an implied method or protocol to be used?

http://www.fao.org/food/food-safety-quality/scientific-advice/jecfa/jecfa-flav/details/en/c/924/

[AWK]

read: Online help  About the data  Analytical Methods (Volume 4)
for this FAO document (COMBINED COMPENDIUM OF FOOD ADDITIVE SPECIFICATIONS vol 4)

[curiouscat]

Thanks @AWK.

I did refer to that Volume but I still don't find guidance on the specific protocol to use for this assay. Perhaps I missed something. Did you have a specific page / section you wanted me to look at?

[Arkcon]

The method in question likely that s somewhere in the compendium in question, or in a related document.  Without the actual document in question, its hard to know where it is.  I'm not saying this is a difficult process, but if you want it to be quick and free, you may B expecting too much.

[AWK]

Document show different tests for this group of compounds, GC ist the most important.

[curiouscat]

The method in question likely that s somewhere in the compendium in question, or in a related document.  Without the actual document in question, its hard to know where it is.  I'm not saying this is a difficult process, but if you want it to be quick and free, you may B expecting too much.

OK. So what you are saying is that the method must be specified somewhere I just need to look harder. Will do.

It's an UN Org. So I expect it's free. e.g. Vol4 @AWK referred to is freely available on the site. Just doesn't contain the specific protocol info.

 But even if not I'm willing to pay for the protocol the way I do at ASTM / ISO etc. ; but I just don't see a link to buy either.

I'm used to seeing an assay value with a note / link to the test-protocol; the absence of any such hint here made me wonder if there's some default method obvious to people skilled in the art that I'm missing.

[AWK]

Page 191 Flavouring Agents - Assay
"For Gas Chromatographic analysis procedures see Gas Chromatography in the Section on
Analytical Techniques".
Link to complete volume 4: ftp://ftp.fao.org/docrep/fao/009/a0691e/a0691e.pdf

[curiouscat]

Page 191 Flavouring Agents - Assay
"For Gas Chromatographic analysis procedures see Gas Chromatography in the Section on
Analytical Techniques".
Link to complete volume 4: ftp://ftp.fao.org/docrep/fao/009/a0691e/a0691e.pdf

Thanks! So GC it is.