Departamento de Ingeniería Agroindustrial, Universidad Autónoma Chapingo, Carretera México-Texcoco, km 38.5, Chapingo, 56230, Mexico, Mexico.
Plant Foods Hum Nutr. 2013 Dec;68(4):403-10. doi: 10.1007/s11130-013-0391-8.
Fruits with red and orange flesh of the columnar cactus pitaya (Stenocereus pruinosus) were studied to evaluate physical characteristics, total soluble solids, betalains and soluble phenols content, and antioxidant activity. Fruits had, in average, weight of 179.0 g, 9.8 °Brix, 9.4 % carbohydrates, 1.25 % protein, 0.11 % ethereal extract, 0.60 % crude fiber, and 0.62 % ash. Also, fruits resulted rich in Fe (22.8-27.8 mg/kg). Hue angle and contents of betacyanins, betaxanthins (μg/g dry sample), and total soluble phenols (mg GAE/g fresh sample) were 19.8°, 2860.0, 3210.0, and 1.6 in the red material, and 28.9°, 470.0, 2670.0, and 1.2, respectively, in the orange fruit. The antioxidant capacity was higher in the red material, since the ABTS (2,2'-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid)) technique reported 1090.6 and 735.4 μmol of Trolox equivalents/g fresh flesh in red and orange fruits, respectively, while the oxygen radical absorbance capacity (ORAC) assay reported 7.84 and 5.16 μmol of Trolox equivalents/g fresh flesh, respectively. The chromatographic profile showed five betalains in red fruits, but only four of them were observed in those orange fleshed.
柱形仙人掌火龙果（Stenocereus pruinosus）的红色和橙色果肉水果进行了研究，以评估其物理特性、总可溶性固体物、甜菜红素和可溶性酚类物质含量以及抗氧化活性。果实平均重 179.0g，糖度 9.8°Brix，碳水化合物 9.4%，蛋白质 1.25%，乙醚提取物 0.11%，粗纤维素 0.60%，灰分 0.62%。此外，火龙果还富含铁（22.8-27.8mg/kg）。红色果肉的色调角和甜菜红素、甜菜黄素（μg/g 干样）和总可溶性酚（mg GAE/g 鲜样）含量分别为 19.8°、2860.0、3210.0 和 1.6，橙色果肉的相应值分别为 28.9°、470.0、2670.0 和 1.2。ABTS（2,2'-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid))技术显示红色果肉的抗氧化能力更高，因为其报告的红色和橙色果肉的 Trolox 当量分别为 1090.6 和 735.4μmol/g 鲜果肉，而氧自由基吸收能力（ORAC）测定法报告的 Trolox 当量分别为 7.84 和 5.16μmol/g 鲜果肉。色谱图显示红色果肉中有五种甜菜红素，但在橙色果肉中只观察到四种。
