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. 2022 Nov 16;13:1013973. doi: 10.3389/fmicb.2022.1013973

Figure 5.

Figure 5

Effects of culture time, culture temperature, initial pH of the medium, and inoculum amount on the level of TRP in single-factor experiment. (A) The concentration of TRP was determined in 32 h while maintaining the culture temperature (37°C), initial pH of culture medium (6.8), and inoculum quantity (4%) constant. (B) The concentration of TRP at the 20th hour was determined while the initial pH of the medium (6.8) and inoculation amount (4%) remained constant in different temperatures (25, 30, 37, 40, and 44°C). (C) The concentration of TRP at the 20th hour was determined while the temperature (37°C) and inoculation amount (4%) remained constant in different initial pH of the medium (4.8, 5.8, 6.8, 7.8, and 8.8). (D) The concentration of TRP at the 20th hour was determined while the temperature (37°C) and initial pH of the medium (6.8) remained constant in different inoculation amounts (0.5, 1, 2, 4, 6, and 8%).

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