Phenolic and Antioxidant Properties of Male Bud Flowers and Fruit of Musa Genotypes with Different Ploidy

Banana (Musa X paradisiaca) fruits are important foods and considered to be especially rich sources of polyphenolics. The bracts, abundant edible residues of banana production, were investigated as a potential source of natural colorants. The aim of this research was to investigate the total phenolic content and antioxidant activity of banana male bud flowers, unripe fruit peel and pulp at 80-90% mature of banana genotypes with different ploidy in Thailand. The total phenolics content and antioxidant activities were significantly different among banana cultivars. Total phenolic levels were higher in unripe peel than in male bud flowers and unripe pulp. The highest total phenolic contents in peel were 129.5 mg GAE/g DW in 'Thep Panom' (Musa ABB), followed by 128.9 mg GAE/g DW in 'Nam Thai' (Musa AA) and 72.9 mg GAE/g DW in 'Thep Parod' (Musa ABBB). This result is consistent with the antioxidant activity. The ABTS, DPPH and FRAP assays differed significantly (p

香蕉（Musa X paradisiaca）是重要的食用作物，且被认为是多酚类物质的优质来源。本研究以香蕉生产中产量丰富的可食用副产物——苞片为研究对象，探究其作为天然着色剂潜在原料的可行性。本研究旨在检测泰国不同倍性香蕉基因型在80%~90%成熟度时的雄花苞、未成熟果皮及果肉的总酚含量与抗氧化活性。结果显示，不同香蕉栽培品种的总酚含量与抗氧化活性存在显著差异。未成熟果皮的总酚含量高于雄花苞与未成熟果肉。果皮中总酚含量最高的为‘Thep Panom’（Musa ABB），达129.5 mg没食子酸当量/克干重（mg GAE/g DW），其次为‘Nam Thai’（Musa AA，128.9 mg GAE/g DW）与‘Thep Parod’（Musa ABBB，72.9 mg GAE/g DW）。该结果与抗氧化活性的检测结果一致，ABTS、DPPH及FRAP三种抗氧化活性检测方法的结果均存在显著差异（p