Abstract
Extracts from various vegetables and fruits were investigated for their abilities to reduce nitro-polycyclic aromatic hydrocarbons (NPAHs). The extracts from grape and onion exhibited an interesting selectivity, yielding corresponding hydroxylamines or amines as major products under mild conditions of 30 °C and pH 7.0. Grape extracts reduced the 4-nitro-1,8-naphthalic anhydride with the highest conversion rate (>99%) and the highest ratio of hydroxylamine to amine (95:5). In contrast, the onion extracts reduced 4-nitro-1,8-naphthalic anhydride with a conversion rate of 94% and a ratio of hydroxylamine to amine of 8:92. The thiol-reducing agent, β-mercaptoethanol, and metal cations, Ca2+ and Mg2+, greatly increased the reductive efficiency. This work provides an alternative strategy for biotransformation of nitro-polycyclic compounds.
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Project supported by the National Basic Research Program (973) of China (No. 2010CB126102), the National Natural Science Foundation of China (No. 31070715), the National High-Tech R&D Program (863) of China (No. 2011AA10A204), the National Key Technology R&D Program of China (No. 2011BAE06B05), and the Fundamental Research Funds for the Central Universities (No. DUT10LK33), China
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Xie, B., Yang, J. & Yang, Q. Biotransformation of nitro-polycyclic aromatic compounds by vegetable and fruit cell extracts. J. Zhejiang Univ. Sci. B 13, 248–253 (2012). https://doi.org/10.1631/jzus.B1100254
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DOI: https://doi.org/10.1631/jzus.B1100254