异生物质 是指由人工合成的化学物质。如农药、洗涤剂及化工原料等,其中各种合成农药占绝大多数。这类物质的理化性质一般比较稳定,可长期积累在环境中造成污染。有的已被证明为强致癌物。
n. xenobiotic
显而易见,大多数异生物质的降解发生在活性生长之后,次级代谢木质素降解阶段。
Apparently most degradation of these xenobiotic compounds occurs after active growth, during the secondary metabolic lignin degradation phase.
这些改良的大肠杆菌发酵生物质中所含的糖类以生合成异戊二烯,并以气体形式释放出来。
The modified organism ferments sugars in the biomass to produce isoprene, in such a way that it bubbles out as a gas.
这种细菌也利用胞内和胞外酶降解数量惊人的异生化合物(非生物来源的外来化学物质)。
This organism also degrades a truly amazing range of xenobiotic compounds (nonbiological foreign chemicals) using both intracellular and extracellular enzymes.
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