Abstract

GONZALEZ LOAIZA, Diana Isabel; ORDONEZ SANTOS, Luis Eduardo; VANEGAS MAHECHA, Pedro  and  VASQUEZ AMARILES, Herney Darío. Changes in physicochemical properties of the fruit of lulo (Solanum quitoense Lam.) harvested at three degrees of maturity. Acta Agron. [online]. 2014, vol.63, n.1, pp.11-17. ISSN 0120-2812.  https://doi.org/10.15446/acag.v63n1.31717.

The changes in the physicochemical properties of lulo (Solanum quitoense Lam) were evaluated in the present research at three degrees of maturity. 300 fruits were used for maturity degree and it was determined the physical characteristics (weight, volume, density, equivalent diameter, sphericity index, performance of pulp and peel) and chemical characteristics (pH, acidity, soluble solids, Maturity Index (MI) and content of vitamin C). The results indicate that maturity does not significantly affect the physical variables, but if done with the chemical properties of fruits. The pH, soluble solids, IM and content of vitamin C was statistically increased (from 2.89 to 2.94, P < 0.01) (6.58 to 9.04 °Brix, P < 0.001), (1.83 - 2.84, P < 0.001), (4.17 and 11.95 mg ascorbic acid/100 g of fresh pulp, P < 0.001) with maturity changes, respectively, in contrast the acidity decreased (3.78 to 3.21 g citric acid /100 g of fresh pulp, p < 0.001).

Keywords : Maturity index; soluble solids; Tropical fruit; vitamin C.

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