Journal
PLANT BIOLOGY
Volume 2, Issue 2, Pages 152-153Publisher
WILEY
DOI: 10.1055/s-2000-9162
Keywords
t-cinnamate; HPLC; PAL; soybean
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The high performance liquid chromatography (HPLC) technique was applied to measure phenylalanine ammonia-lyase (PAL, EC 4.3.1.5) activity in soybean (Glycine max L. Merril cv. BR16) roots. t-Cinnamate, the catalytic product of the PAL reaction was quantified at 275 nm by isocratic elution with methanol:water through an ODS(M) column. Comparative experiments were carried out with 1.0 mM ferulic acid, an inducer of PAL activity. The results suggest that liquid chromatography is a rapid and sensitive method to analyze PAL activity in non-purified extract.
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