Olive phenolics, rosemary diterpenes, chlorogenic acids, cynarin, stilbenes, flaxseed lignan and gallic acid.
| Tests | Oleuropein, hydroxytyrosol, tyrosol, verbascoside, rosmarinic acid, carnosic acid, carnosol, chlorogenic acids, cynarin and derivatives, caffeoylquinic acids and flavones, resveratrol, pterostilbene, SDG lignan, gallic acid; chlorogenic and caffeoylmalic acids in nettle leaf; mangiferin |
|---|---|
| Method | HPLC or UPLC; UV/Vis for the cynarin estimate |
| Results | Reported against your specification or label claim, with pass/fail where limits apply. |
| Price | Quoted per project |
The chromatographic tests separate the named compounds and measure them against reference standards. The cynarin UV/Vis test is an estimate, described in its section.
Several of these results can be a single compound or a total expressed as one compound. Tell us the basis your specification uses.
Measures oleuropein, a secoiridoid glycoside, by HPLC as a single compound. USP describes olive leaf as the dried leaf of Olea europaea; its Olive Leaf and Olive Leaf Powder monographs state oleuropein on the dried basis and its Olive Leaf Dry Extract monograph states it against the labeled amount.
Measures hydroxytyrosol, a phenolic alcohol found in olive materials, by HPLC as a single compound.
Measures hydroxytyrosol, tyrosol and verbascoside together by HPLC, each reported against your specification.
Measures verbascoside (acteoside), a phenylethanoid glycoside, by HPLC as a single compound.
Measures rosmarinic acid, an ester of caffeic acid, by HPLC as a single compound.
Measures carnosic acid, a phenolic diterpene found in rosemary and sage, by HPLC as a single compound.
Measures carnosol, a phenolic diterpene found in rosemary and sage, by HPLC as a single compound.
Measures carnosol and carnosic acid together by HPLC. Tell us whether your specification states each compound or their total.
Measures chlorogenic acids by HPLC and reports their total. Chlorogenic acids are commonly the caffeoylquinic acids and, depending on the specification, can include other hydroxycinnamoylquinic acids; the compounds included in the total are agreed against your specification.
Measures chlorogenic acid in artichoke leaf extract by HPLC as a single compound.
A UV/Vis estimate of cynarin in artichoke extract. The result reflects the combined absorbance of the prepared sample solution, so other caffeoylquinic acids that absorb in the same region contribute to it; it does not identify individual compounds. USP identifies cynarin as 1,3-di-O-caffeoylquinic acid.
Measures cynarin and related caffeoylquinic acid derivatives by HPLC and expresses the total as chlorogenic acid. Tell us which derivatives your specification includes.
Measures caffeoylquinic acids and flavones together by UPLC, a profile of both groups. Tell us which compounds your specification names.
Measures resveratrol, a stilbene, by HPLC as a single compound. Tell us whether your specification states trans-resveratrol.
Measures pterostilbene, the dimethyl ether of resveratrol, by HPLC as a single compound.
Measures secoisolariciresinol diglucoside (SDG), a lignan found mainly in flaxseed, by HPLC as a single compound.
Measures free gallic acid, a phenolic acid, by UPLC as a single compound. Free gallic acid is a different result from total polyphenols expressed as gallic acid.
Measures chlorogenic acid and caffeoylmalic acid in stinging nettle leaf by HPLC and reports each, or their sum where your specification states one.
Measures mangiferin, a xanthone glucoside found for example in mango leaf and bark, by UPLC as a single compound.
Send the material sealed, labeled and protected from light.
Tell us the material or extract and the specification or label claim. We confirm the sample amount at quote.
Questions about a sample or a method, call 360-967-7010 or email [email protected].
