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The bioactive antioxidant antibacterial and physicochemical properties of a range of commercially available Australian honeys

机译:一系列市售澳大利亚蜂蜜的生物活性抗氧化剂抗菌和物理化学性质

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摘要

Honey is a supersaturated sugar solution produced from plant nectar, with its composition influenced by geographic and floral origins, and with several properties contributing to its health-related abilities. This study aimed to determine the bioactive composition, antioxidant characteristics, antibacterial activity, and physicochemical properties of commercial Australian honeys. In total, 42 commercial Australian honeys were selected, and categorised according to front-label descriptions. Honeys were analysed: quality (Hydroxymethylfurfural); colour (colour intensity, L*,a*,b*); bioactive composition (phenolic, flavonoid, and carotenoid content); antioxidant characteristics (DPPH, CUPRAC, FRAP); antibacterial activity (MIC50); physicochemical properties (pH, TSS, viscosity, aw). Colour intensity correlated with each assessed bioactive compound and antioxidant characteristic (p ≤ 0.001). MIC50 (S. aureus) was associated with FRAP and aw, suggesting mechanisms of action for honey's antibacterial activity. Manuka-type honeys had higher colour intensity (1440 (98.5) mAU) than other categories (p ≤ 0.05), and consistently higher bioactive and antioxidant properties. This provides the potential to inform antioxidant-related health outcomes.
机译:蜂蜜是从植物花蜜产生过饱和糖溶液,其组成按地理和花来源的影响,并用几个属性促进其健康相关的能力。这项研究的目的是确定的生物活性成分,抗氧化特性,抗菌活性和商业澳大利亚蜂蜜的物理化学性质。总共选择了42点商业澳大利亚蜂蜜,并根据前标签说明分类。蜂蜜进行了分析:质量(羟甲基);颜色(颜色强度,L *,A *,B *);生物活性组合物(酚醛树脂,类黄酮,类胡萝卜素含量);抗氧化剂特性(DPPH,CUPRAC,FRAP);抗菌活性(MIC 50);物理化学性质(pH值,TSS,粘度,AW)。颜色强度与每个评估生物活性化合物和抗氧化特性(P≤0.001)相关。 MIC50(金黄色葡萄球菌)用FRAP和AW相关联,表明蜂蜜的抗菌活性的作用机制。麦卢卡型蜂蜜具有比其它类别(P≤0.05)更高的颜色强度(1440(98.5)MAU),和一贯较高的生物活性和抗氧化性能。这提供了通知的抗氧化有关的健康结果的可能性。

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