Medicinal Plants and Economic Development (MPED) Research Centre, Department of Botany, University of Fort Hare, Alice, 5700, Eastern Cape, South Africa.
Department of Agricultural Education, Federal College of Education (Special), Oyo, PMB 1069, Oyo State, Nigeria.
Sci Rep. 2021 Jan 13;11(1):1030. doi: 10.1038/s41598-020-80433-8.
Roselle-Hibiscus sabdariffa L. leaves at different stages of growth, calyces and seeds were analyzed for nutritional and anti-nutritional factors. All the treatments contained a good but varied proportion of carbohydrate in a range of 26.93-54.13%, crude protein from 5.7 to 27.06%, crude fat 1.16-13.09%, crude fibre 15.75-36.10%, energy 631.36-1065 kJ, ash 6.08-13.74% and moisture content 6.00-9.7%. The vitamins A, C and E were also found to be present in all the treatments in a different but substantial amount. The calcium, magnesium and iron contents in all the treatments were higher than the recommended daily allowance of 1250, 350, and 15 mg for adults, while the phosphorus and sodium values in all the treatments were below 1000 and 1500 mg RDA for adults. However, the Na + /K + for all the treatments were lower than 1. The values of anti-nutrients in the samples were small except post-flowering red which had high phytate content of 21.02%, although this can be easily reduced during processes like boiling and cooking. Thus, both cultivars of roselle contain high nutritional, elemental, and vitamins compositions and small content of anti-nutrients.
罗勒-洛神花（Hibiscus sabdariffa L.）的不同生长阶段的叶片、花萼和种子都进行了营养成分和抗营养因子的分析。所有处理都含有较好但比例不同的碳水化合物，范围在 26.93-54.13%之间；粗蛋白为 5.7-27.06%；粗脂肪 1.16-13.09%；粗纤维 15.75-36.10%；能量 631.36-1065 kJ；灰分 6.08-13.74%；水分含量 6.00-9.7%。所有处理都含有不同但含量相当可观的维生素 A、C 和 E。所有处理的钙、镁和铁含量都高于成人推荐的每日摄入量 1250、350 和 15 毫克，而所有处理的磷和钠含量都低于成人的 1000 和 1500 毫克 RDA。然而，所有处理的 Na+/K+都低于 1。除了开花后期的红色样本具有较高的植酸含量 21.02%外，样本中的抗营养因子含量都较小，尽管在煮沸和烹饪等过程中可以很容易地降低其含量。因此，这两个罗勒品种都含有高营养、微量元素和维生素，且抗营养物质含量较小。
