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Fig. 2 | Bioresources and Bioprocessing

Fig. 2

From: Ameliorating effects of chicken feathers in plant growth promotion activity by a keratinolytic strain of Bacillus subtilis PF1

Fig. 2

a Time course of IAA production by Bacillus subtilis PF1 in the presence of various concentrations of l-tryptophan. The result is represented as mean ± standard deviation of three independent variables. b The IR spectrum of the purified compound showed OH frequency at 3383.2 cm−1 and C = O frequency at 1697.3 cm−1 similar to the IR spectrum of standard IAA

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