3 2 1 Collaborating standards; concentrated components from The if Within these laboratories Multidisciplinary along isolate M1a HO ‐
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O O most O *Corresponding Mw:534.4736 g/mol
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Fig.2
OH Néss C of 6,8 these OH a
27 C the OH
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13
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3
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to David and Rare compoundsstudiesin field O M1b the
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Cultural flavonoid
Conservation/Restoration
3',7 27 rmteplants the from (fig.2) and The
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3
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identified This
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O
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luteola 26 mark plants
16 both b
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Susanna HOH OH obtained
O
O
colorant United primeveroside colouring
28 Absorption at 350 nm Peggie
0.00 0.02 0.04 0.06 0.08 0.10 0.12 0.14 0.16 0.18 0.20 0.22 Quadrapole OH
O method
the O to was 6.00
14 samples O
Fig.4 Heritage HO HO Rubia tinctorum
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In
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11.00 Xantho
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and
Mw:448.1006 g/mol
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Retention time time Retention ‐ 12.00 standard
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2
C
14 are are to ofre by confirmed
O O Heritage these the Fraction 21
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and H 7 ‐ 13.00
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of study
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fractions
fractions
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Rubiadin
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HO project, NMR. pigments 18.00 mass ‐
CNR),
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to Mw:548.1530 g/mol
obtained anthraquinonic
19.00
with and
liquid HO examined HO array
OH
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3
C
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spectrometer After
26 Mw:448.1006 and
(L) O OH Heritage Italy O
0 H
Apigetrin
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C
isolate
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for 21
g/mol interested
and
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20
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HO Absorption at 350 nm
0.00 0.05 0.10 0.15 0.20 0.25 0.30 complete shown.
L.) then 10 cultural using with L. a
10.00 same elucidate reported
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for
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unknown
plants. OH they
1 Agency
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11.00
them
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Advanced
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as
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partners
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chemical molecular
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Mw:240.2151
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13.00 often
Alizarin 12.773 C
the g/mol after 14 O O HO
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the with and H system 21
8
H 14.00 ‐ O
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O
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O Retention time time Retention
glucose
found Netherlands OH hydrolysis Research
11 high R2: Reseda luteola
also the
an 15.00 3’ from 4’
are OH O O O
to O O Approach
electro glucoside? glucoside? glycose R2:
16.00 with performance
M5 (
Fig.6
min in
hydrolyzed
16.006 OH Mw:256.2145 g/mol )
Fig.1 17.00
R1 (R)
Purpurin Weld nuclear Infrastructures: C
O O 17.420 spray 14
18.00 Selection (OCW showing H R2 Chromatogram 8 O
5 to Fraction; OH OH
19.00 18.615 HO
ionization
to
Conservation/Restoration ‐ RCE) OH Mw:286.048 g/mol 20.00
OH
in
Luteolin M6 coloured C
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H of Mw:254.2420 g/mol 10
O weld 6
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Fig.5
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Components
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OH Collected
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M7 madder
Spectrum Nordamnacanthal? with Apigenin C
Mw:268.2255 g/mol O O fractions 15
H fractions 10 C
O CapLC O O 15 5 H (beneath) 8 O
OH 5 OH O OH H W8