研究员说，这种效果最有可能得益于黑色巧克力的抗氧化作用。

Most likely the results were thanks to the antioxidant effect of dark chocolate, the researchers say.

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而其他羽毛化石(尽管缺乏碳元素)中找到的痕迹，也许能显示已经因氧化而消失的黑色素体的原始存在。

But trace imprints found in other fossilised feathers (despite an absence of carbon) may indicate the original presence of melanosomes that have since been lost to oxidation.

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根据这项新的研究，其他“抗氧化成分含量高”的水果和蔬菜包括洋蓟、豆荚(这项研究提及了黑色、红色和黑白相间的)、干梅和美洲山核桃。

According to the new study, other fruits and vegetables with a "high antioxidant capacity" include artichokes, beans (the study cited black, red, and pinto), prunes, and pecans.

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