Department of Food Science and Technology, School of Agriculture, University of Venda Private Bag X5050, Thohoyandou, 0950, Limpopo Province, South Africa.
Department of Horticultural Sciences, School of Agriculture, University of Venda Private Bag X5050, Thohoyandou, 0950, Limpopo Province, South Africa.
Food Sci Nutr. 2015 May;3(3):221-32. doi: 10.1002/fsn3.208. Epub 2015 Feb 17.
Banana cultivars--Luvhele (MusaABB), Mabonde (MusaAAA), and Muomva-red (Musa balbisiana) --were characterized for morphological, physicochemical, and antioxidant properties. All three cultivars varied significantly (P < 0.05) in their morphology, pH, titratable acidity and total soluble solids with no significant difference in their ash content. Individual cultivars showed variations in flour starch granule when observed using a scanning electron microscope. Characterization of cultivars for total polyphenols (TPs) and antioxidant activity upon pretreatment with ascorbic, citric, and lactic acid shows that the 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging assay of samples varied significantly as Muomva-red cultivar (1.02 ± 0.01 mg GA/g) expressed the highest DPPH activity at lactic acid concentration of 20 g/L. Total polyphenol content was also highest for Muomva-red [1091.76 ± 122.81 mg GAE/100 g (d.w.)]. The high amount of TPs present in these cultivars make them suitable source of bio-nutrients with great medicinal and health functions.
香蕉品种——Luvhele（MusaABB）、Mabonde（MusaAAA）和 Muomva-red（Musa balbisiana）——在形态学、物理化学和抗氧化特性方面进行了特征描述。这三个品种在形态、pH 值、可滴定酸度和总可溶性固体方面差异显著（P<0.05），灰分含量无显著差异。用扫描电子显微镜观察时，发现各个品种的面粉淀粉颗粒都有所不同。用抗坏血酸、柠檬酸和乳酸预处理后对品种的总多酚（TPs）和抗氧化活性进行了表征，结果表明，1,1-二苯基-2-苦基肼（DPPH）自由基清除试验的样品差异显著，Muomva-red 品种（1.02±0.01mg GA/g）在 20g/L 乳酸浓度下表现出最高的 DPPH 活性。Muomva-red 的总多酚含量也最高[1091.76±122.81mg GAE/100g（d.w.）]。这些品种中存在大量的 TPs，使它们成为具有重要药用和保健功能的生物营养物质的良好来源。
