Figure 2From: Identification of the para-nitrophenol catabolic pathway, and characterization of three enzymes involved in the hydroquinone pathway, in pseudomonas sp. 1-7HPLC analyses of supernatants of Preudomonas sp. 1-7 grown on PNP. (a) HPLC chemical standards: authentic PNP, HQ and 4-NC had retention times of 75, 10.5 and 45 min, respectively; HPLC analysis of cell-free supernatants at (b) 0 h and (c) 3.5 h.Back to article page