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Nutritional and Antioxidant Potential of Fiddleheads from European Ferns

机译:来自欧洲蕨类植物的闲船营养和抗氧化剂潜力

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摘要

Ferns are part of the diet and traditional medicine in East Asia, North America, and Oceania, however, their importance has been forgotten in Europe. Here, the nutritional and antioxidant potential of young fern fronds (fiddleheads) of eight families were studied. Most of the tested fern species excelled in high antioxidant capacity when compared to the reference leafy vegetables spinach and rocket. On average, the total phenol content reached 220 mg·g−1 of extract dry weight for all fiddleheads, and 15 out of 24 tested species exceeded 1 g Trolox equivalent per gram of extract dry weight in Oxygen Radical Absorbance Capacity (ORAC) assay. On the other hand, fiddleheads contained a comparable amount of carotenoids and ascorbic acid with the reference vegetables. In the case of fatty acid composition, fiddleheads contained especially high amounts of essential omega-3 (n3) and omega-6 (n6) polyunsaturated fatty acids with a beneficial n63 ratio. The n63 ratio in all tested species was between 2 and 6.4, whereas the ratio in the reference vegetables was below 0.4. All in all, fiddleheads from European ferns are a rich source of valuable antioxidants and essential fatty acids with a desirable n-6-3 ratio and may thus form an alternative source of these compounds, especially for those people not consuming fish and fish products.
机译:蕨类植物是东亚,北美和大洋洲的饮食和传统医学的一部分,然而,他们的重要性在欧洲被遗忘。在这里,研究了八个家庭的年轻蕨叶片(小提琴)的营养和抗氧化潜力。与参考绿叶蔬菜菠菜和火箭相比,大多数经测试的蕨类型物种具有高抗氧化能力。平均而言,对于所有小翼片的总酚含量达到220mg·g-1,对所有小尾头的提取物干重,24个测试物种中的15个超过每克氧自由基吸收能力(orac)测定中的1g滴水槽。另一方面,小提琴含有可比例的类胡萝卜素和抗坏血酸与参考蔬菜。在脂肪酸组成的情况下,诱饵含有尤其高量的ω-3(N3)和ω-6(N6)多不饱和脂肪酸,其具有有益的N6 / N3比。所有测试物种中的N6 / N3比在2和6.4之间,而参考蔬菜中的比例低于0.4。总而言之,来自欧洲蕨类植物的猎人是具有理想的N-6 / N-3比的有价值的抗氧化剂和必需脂肪酸的富含脂肪酸,因此可以形成这些化合物的替代来源,特别是对于那些不饮食鱼类的人产品。

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