这表明该苹果多酚提取物是一种优良的天然抗氧化剂和自由基清除剂。
The results suggested that the apple polyphenol extracts was an excellent natural antioxidant and free radicals scavenger.
从提取精油后的残渣中提取得到的迷迭香提取物，具有良好的抗氧化性能，是一种天然抗氧化剂。
The rosemary extract obtained from the residue after the removal of essential oil is a natural antioxidant that has a good antioxidative activity.
大蒜精油是一种安全的、无毒的天然提取物。
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