A Phenolic Fraction from Catharanthus roseus L. Stems Decreases Glycemia and Stimulates Insulin Secretion

Table 5

Spectral analysis and quantification of compounds in the precipitate from C. roseus.

Compound	Retention time (min)	% in the sample	Spectral signal (sample)	Spectral signal (standard)
Gallic acid	14.19	0.053
Chlorogenic acid	20.15	0.216