P1191
Prodelphinidin B3 from barley
≥80% (HPLC)
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About This Item
Empirical Formula (Hill Notation):
C30H24O13
CAS Number:
Molecular Weight:
592.50
MDL number:
UNSPSC Code:
12352200
Assay
≥80% (HPLC)
storage temp.
−20°C
Application
Marker used in the beer brewing industry to determine the effectiveness of the chill-proofing process.
Preparation Note
Each vial contains approximatley 1 mg polyphenols (by p-dimethylaminocinnamaldehyde).
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American Society of Brewing Chemists, 50(2), 67-67 (1992)
I McMurrough et al.
Analytical biochemistry, 91(1), 92-100 (1978-11-01)
Flavanols from barley or hops were separated chromatographically and assayed automatically by reaction with the chromogen, 4-dimethylaminocinnamaldehyde. For separating the flavanols on Sephadex G-25, gradient elution with water-methanol mixtures was necessary. The chromogen was specific for flavanols and well suited
D Madigan et al.
The Analyst, 119(5), 863-868 (1994-05-01)
A method was developed to determine the flavanols prodelphinidin B3, procyanidin B3, (+)-catechin, and (-)-epicatechin by high-performance liquid chromatography, using dual-channel electrochemical detection. This method was especially suited to the direct analysis of beer samples and to analysis of acetone
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