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首页> 外文期刊>BioTechnology: An Indian Journal >Screening of different banana peels extracts for antioxidant capacity and total phenols
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Screening of different banana peels extracts for antioxidant capacity and total phenols

机译：筛选不同香蕉皮提取物的抗氧化能力和总酚

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The total phenolic content and related total antioxidant capacity of 4 types of banana peelswere analyzed. Banana (Musa acuminata CollaAAA) peel extracts obtained in thiswork had a high capacity to scavenge 2,2-diphenyl- 1-picrylhydrazyl (DPPH), 2,22 -azino-bis (3-ethylbenzothiazoline)-6-sulfonic acid (ABTS+) free radicals NBR (Nitro blue tetrazolium), and they were also good lipid peroxidation inhibitorsAcetone:water extracts were considerably more effective (compared with methanol, ethanol, acetone, water, methanol:water or ethanol:water) at inhibiting the peroxidation of lipids in the a-carotene/linoleic acid system or scavenging free radicals. However, aqueous extracts had a high capacity to protect lipids from oxidation in the thiobarbituric acid reactive substances (TBARS) test, as well as in the a-carotene bleaching assay. To make practical comparison of relative antioxidant potential of phenolics extracted from selected banana peels, the phenol antioxidant coefficient (PAC) was calculated for each infusion. In addition, acetone:watermost efficiently extracted all extractable components (54 ± 4%), phenolic compounds (3.3 ± 0.8%), and anthocyanin compounds (434 ± 97 ìg cyanidin 3-glucoside equivalents/100 g freezedried banana peel). Banana peel contained large amounts of dopamine and L-dopa, catecholamines with a significant antioxidant activity. However, ascorbic acid, tocopherols or phytosterolswere not detected in the different extracts. The antioxidant activity of banana peel extracts from different cultivarswas similar.However, the impact of extraction time or temperature should be studied in greater depth.
机译：分析了四种香蕉皮的总酚含量和相关的总抗氧化能力。通过这项工作获得的香蕉（Musa acuminata CollaAAA）果皮提取物具有较高的能力清除2,2-二苯基-1-吡啶并肼基（DPPH），2,22-叠氮基双（3-乙基苯并噻唑啉）-6-磺酸（ABTS +）自由基NBR（硝基蓝四唑），它们也是良好的脂质过氧化抑制剂丙酮：水提取物在抑制脂质过氧化方面更有效（与甲醇，乙醇，丙酮，水，甲醇：水或乙醇：水相比） α-胡萝卜素/亚油酸系统或清除自由基。然而，在硫代巴比妥酸反应性物质（TBARS）测试以及α-胡萝卜素漂白测定中，水提取物具有保护脂质免于氧化的高能力。为了对从选定香蕉皮中提取的酚类化合物的相对抗氧化潜力进行实际比较，计算每次输注的酚抗氧化剂系数（PAC）。此外，丙酮：水最有效地提取了所有可提取成分（54±4％），酚类化合物（3.3±0.8％）和花色苷化合物（434±97克花青素3-葡萄糖苷当量/ 100 g冷冻干燥的香蕉皮）。香蕉皮中含有大量的多巴胺和左旋多巴，儿茶酚胺具有明显的抗氧化活性。但是，在不同的提取物中未检测到抗坏血酸，生育酚或植物甾醇。不同品种香蕉皮提取物的抗氧化活性相似，但是应更深入地研究提取时间或温度的影响。

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