Chemical composition of varieties of chaya (Cnidoscolus aconitifolius Mill. I.M. Johnst.) at different cutting ages
Abstract
Cnidoscolus aconitifolius Mill. I.M. Johnst, is a plant distributed in tropical and subtropical, for its high nutritional value and adaptability to diverse environments. To evaluate the chemical composition of two varieties of chaya at different harvest ages. A completely randomized experimental design with a 2x4 factorial arrangement was used, with chaya varieties (Estrella and Mansa) and harvest age (60, 90, 120, and 150 days) as factors. The chemical composition and the presence of some secondary compounds (phenols, tannins, saponins, catechins and flavonoids) in chaya leaves were analyzed. The comparison of means tests for the interaction between variety and cutting time showed that the Mansa variety at 120 days had a higher fat content (7.04 %) and phenols (5.39 mg.g-1), as well as a lower FDA content (15.12 %), unlike the Estrella variety, which at 90 days had a higher protein content (33.90 %). The Estrella variety had higher protein (29.90 %) and NDF (37.57 %) contents; however, the Mansa variety had higher total phenol content (4.78 mg) and ADF (16.90 %). The Estrella variety showed the highest protein content in the 90-day harvest, while NDF was higher in the first harvests (60 days) of the Mansa variety. Fat content was similar in both varieties. Phenols were more prevalent in the Mansa variety, although both showed high concentrations of tannins, saponins, catechins, and flavonoids, and low concentrations of triterpenes, amino acids, and reducing sugars.
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