Coyago-Cruz Elena, Guachamin Aida, Méndez Gabriela, Moya Melany, Martínez Aníbal, Viera William, Heredia-Moya Jorge, Beltrán Elena, Vera Edwin, Villacís Michael
Carrera de Ingeniería en Biotecnología de los Recursos Naturales, Universidad Politécnica Salesiana, Sede Quito, Campus El Girón, Av. 12 de Octubre N2422 y Wilson, Quito 170143, Ecuador.
Facultad de Ciencias Médicas, Carrera de Obstetricia, Universidad Central del Ecuador, Iquique, Luis Sodiro N14-121, Quito 170146, Ecuador.
Foods. 2023 Sep 20;12(18):3494. doi: 10.3390/foods12183494.
Tree tomato () is susceptible to nematode attack; for this reason, grafting is used as an alternative to reduce this impact. In this study, the bioactive compounds of the fruit (shell, pulp, and seed jelly) of two tree tomato ecotypes ('giant orange' and 'giant purple') were evaluated in both control and grafted plants grown at different altitudes (2010-2250, 2260-2500, 2510-2750 and 2760-3000 masl). Commercial quality, vitamin C, organic acids, phenolics, carotenoids and antioxidant activity were determined by microextraction and quantified by liquid chromatography (RRLC) or spectrophotometry (microplate reader). The results showed high concentrations of vitamin C, organic acids and antioxidant activity in the seed jelly, organic acids in the pulp and phenolic compounds, carotenoids, and antioxidant activity in the shell. The main phenolics were ferulic acid, caffeic acid and luteolin, while the main carotenoids were lutein, B-cryptoxanthin and B-carotene. Multivariate analysis showed that tree tomato quality was mainly influenced by altitude and fruit part and that grafting positively affected soluble solids for both ecotypes and all altitudes.
树番茄（）易受线虫侵袭；因此，嫁接被用作一种减少这种影响的替代方法。在本研究中，对两种树番茄生态型（“巨型橙色”和“巨型紫色”）果实（果皮、果肉和籽冻）的生物活性成分在不同海拔（2010 - 2250、2260 - 2500、2510 - 2750和2760 - 3000米海拔）种植的对照植株和嫁接植株中进行了评估。通过微萃取测定商业品质、维生素C、有机酸、酚类、类胡萝卜素和抗氧化活性，并通过液相色谱（RRLC）或分光光度法（酶标仪）进行定量。结果表明，籽冻中维生素C、有机酸和抗氧化活性浓度较高，果肉中含有机酸，果皮中含有酚类化合物、类胡萝卜素和抗氧化活性。主要酚类物质为阿魏酸、咖啡酸和木犀草素，主要类胡萝卜素为叶黄素、β - 隐黄质和β - 胡萝卜素。多变量分析表明，树番茄品质主要受海拔和果实部位影响，并且嫁接对两种生态型在所有海拔下的可溶性固形物均有积极影响。
