PDF(Pubmed)
Abstract：
The aim of this work was to study the antioxidant potential of aqueous extracts obtained from different by-products. The effectiveness of these extracts was compared with that of rosemary extract. Total phenol carotenoid and vitamin C contents, as well as in vitro antioxidant activity, were assessed. Phenol content was positively correlated with in vitro antioxidant activity in extracts, while carotenoids showed a less clear relationship. Vitamin C was associated with antioxidant activity in lemon and pepper pomace extracts. Extracts from olive, grape, and lemon by-products displayed the highest antioxidant activity (radical scavenging activity), this being similar to the activity of rosemary extracts. Moreover, the phenolic profile of the extracts was analyzed, revealing diverse phenolic compounds. Rosemary extracts contained the highest variety and quantity of phenolic compounds, while olive pomace extracts were rich in hydroxytyrosol and 4-hydroxybenzoic acid. Lemon and pepper extracts contained high amounts of tyrosol, and tomato extracts had abundant epicatechin. The PCA analysis distinguished extracts based on in vitro antioxidant activity, phenol, carotenoid, and vitamin C content, along with their phenolic compound profiles. This study emphasizes the capacity of aqueous extract by-products as valuable sources of antioxidants and highlights the importance of understanding their bioactive components.
摘要：
这项工作的目的是研究从不同副产品获得的水提物的抗氧化潜力。将这些提取物的有效性与迷迭香提取物的有效性进行比较。总酚类胡萝卜素和维生素C含量，以及体外抗氧化活性，被评估。苯酚含量与提取物的体外抗氧化活性呈正相关,而类胡萝卜素显示出不太清楚的关系。维生素C与柠檬和胡椒渣提取物的抗氧化活性有关。橄榄提取物,葡萄,和柠檬副产品显示出最高的抗氧化活性（自由基清除活性），这与迷迭香提取物的活性相似。此外，对提取物的酚类成分进行了分析，揭示不同的酚类化合物。迷迭香提取物含有最高种类和数量的酚类化合物，橄榄果渣提取物富含羟基酪醇和4-羟基苯甲酸。柠檬和胡椒提取物含有大量酪醇，番茄提取物含有丰富的表儿茶素。PCA分析根据体外抗氧化活性区分提取物，苯酚,类胡萝卜素，和维生素C含量，以及他们的酚类化合物概况。这项研究强调了水提取物副产品作为抗氧化剂的宝贵来源的能力，并强调了了解其生物活性成分的重要性。
