A study of the organic acid and soluble sugar contents in strawberry f
ruits was carried out. These compounds were separated, identified and
quantified using high-performance liquid chromatography with diode arr
ay spectroscopic detection and refractive index detection, for organic
acids and soluble sugars, respectively, Strawberry fruits were analys
ed at six development stages, from fruit set to senescence. Changes in
these parameters were studied during development and ripening. Titrat
able acidity, pH, reducing sugars and soluble solids, as well as pheno
lic compounds and pectic substances, were also determined. Different s
ugar acid ratios were used as a quality index. Strawberry fruits with
the best quality characteristics for consumption were obtained on day
28 from fruit set.