Antioxidant benefits of Ecklonia radiata algae phenolic extracts in food grade omega-3 delivery systems

IF 7.2 Q1 FOOD SCIENCE & TECHNOLOGY

Future Foods Pub Date : 2024-06-20 DOI:10.1016/j.fufo.2024.100406

Tharuka Gunathilake , Taiwo O. Akanbi , Bo Wang , Colin J. Barrow

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Abstract

Seaweed phenolics are an attractive, sustainable source of natural phenolic antioxidants, and have potential for stabilising complex food and feed systems. In the present study, three seaweeds collected along the Victoria coastline of Australia were extracted and screened for phenolic content and antioxidant activity. A 70/30 ethanol/water extract of Ecklonia radiata was selected and major phenolics were characterised using LC-ESI-QTOF-MS/MS, with eckol-type phlorotannins being the identified as the most abundant in this extract. This Ecklonia radiata extract was able to oxidatively stabilise tuna oil-in-water emulsion at low concentrations but showed some pro-oxidant effects in at higher concentrations in both emulsions and microcapsules omega-3 delivery systems. Ecklonia radiata phenolics are useful for oxidative stabilisation but results indicate that phenolic levels need to be specifically tailored for each application, particularly for complex food delivery systems.

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Ecklonia radiata 藻类酚类提取物在食品级欧米加-3 给药系统中的抗氧化功效

海藻酚类物质是一种有吸引力的、可持续的天然酚类抗氧化剂来源，具有稳定复杂食品和饲料系统的潜力。本研究提取了澳大利亚维多利亚州海岸线采集的三种海藻，并对其酚类含量和抗氧化活性进行了筛选。研究人员选择了 Ecklonia radiata 70/30 的乙醇/水提取物，并使用 LC-ESI-QTOF-MS/MS 对主要酚类物质进行了表征，结果表明这种提取物中的酚类物质含量最高。在低浓度条件下，这种辐射黑麦草提取物能够氧化稳定金枪鱼水包油型乳液，但在高浓度条件下，这种提取物在乳液和微胶囊欧米伽-3输送系统中显示出一些促氧化作用。Ecklonia radiata酚类物质可用于氧化稳定，但研究结果表明，酚类物质的含量需要根据每种应用的具体情况进行调整，尤其是复杂的食品输送系统。

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来源期刊

Future Foods Agricultural and Biological Sciences-Food Science

CiteScore

8.60

自引率

0.00%

发文量

审稿时长

15 weeks