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Table 6 Composition of Hypericum dye as observed by HPLC–MS/MS, DART- and PS-MS

From: The analysis of the Saltzman Collection of Peruvian dyes by high performance liquid chromatography and ambient ionisation mass spectrometry

Mordant

Fiber

HPLC-ESI-Q-ToF, EDTA/DMF extract

DART-MS (direct)

DART-MS (formic acid)

Paper spray MS, EDTA/DMF extract

None

Wool

Methylquercetin glucuronide, quercetin glucuronide, quercetin, rhamnetin

Quercetin, tetrahydroxymethoxyflavone, dihydroxy-xanthone

Quercetin, tetrahydroxymethoxyflavone

Quercetin, quercetin glucuronide, tetrahydroxymethoxyflavone, methylquercetin glucuronide

None

Alpaca

Methylquercetin glucuronide, quercetin glucuronide, quercetin, rhamnetin

Quercetin, dihydroxyxanthone

Quercetin

Quercetin, quercetin glucuronide, tetrahydroxymethoxyflavone, methylquercetin glucuronide

Alum

Wool

Methylquercetin glucuronide, quercetin glucuronide, quercetin, rhamnetin

Quercetin, tetrahydroxymethoxyflavone, dihydroxy-xanthone

Quercetin, tetrahydroxymethoxyflavone

Quercetin glucuronide, quercetin, tetrahydroxymethoxyflavone, methylquercetin glucuronide

Alum

Alpaca

Methylquercetin glucuronide, quercetin glucuronide, quercetin, rhamnetin

Quercetin, tetrahydroxymethoxyflavone, dihydroxy-xanthone

Quercetin, tetrahydroxymethoxyflavone, dihydroxy-xanthone

Quercetin, quercetin glucuronide, tetrahydroxymethoxyflavone, methylquercetin glucuronide