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Hibiscetin

Hibiscetin ??? ???
?? ??:
71149-61-6
???:
Hibiscetin
???(??):
Hibiscetin;roselle red;Hibiscus Color;hibiscus sabdaritta;Roselle red pigment;hibiscuss sabdarite;4H-1-Benzopyran-4-one, 2-(3,5-dihydroxy-4-methoxyphenyl)-5,8-dihydroxy-3,7-dimethoxy-
CBNumber:
CB02124023
???:
C18H16O9
??? ??:
376.31
MOL ??:
71149-61-6.mol

Hibiscetin ??

??

Hibiscetin C??? ??, ??, ??

????

  (1) ?? : ? ??? ?????? ?? ??? ?, ? ?? 4.0ppm ????? ??.

  (2) ? : ? ?? 5.0g? ??? ??????? ?? ?????????????? ?? ??? ?, ? ?? 10.0ppm ????? ??.

? ? ?(??) ? ??? ???? ???? 0.3～0.7? ??? ??? ??? ?? ??????(pH 3.0)? ??? 100mL? ? ?? ?????? ??. ???? ?????? ? ???? ????. ??????(pH 3.0)? ????? ?? ?? 1cm, ?? 520nm ??? ???????? ????? ??? A? ???? ?? ???? ?? ??? ???.
? ?()＝A × 10/??? ???(g)

 ??????(pH 3.0)

    ? 1 ? : 1L?? 121g? ???(C6H8O7?H2O)? ????.

    ? 2 ? : 1L?? 71.6g? ??????(Na2HPO4?12H2O)? ????.

   ? 1 ? 159??? ? 2 ? 41??? ? ???? pH 3.0?? ????.

????

? (1) ? ??? ??????(pH 3.0)??(1→100)? ??? ????, ?? 520nm ??? ?????? ??.

??(2) (1)? ??? ????????(1→25)? ??? ?????? ? ?, ????? ???.

??

? ? ??? ??? ???(Hibiscus sabdariffa Linné)? ?? ?? ???? ???? ???? ???? delphinidin-3-sambubioside??. ??, ????, ???? ?? ??? ???, ??? ? ?? ?? ??? ? ??.

Hibiscetin ?? ?? ? ???

???

?? Arachidoside weak ??? C

?? ??

Hibiscetin ?? ??

???( 17)?? ??
??? ?? ??? ?? ?? ? ??
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