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Table 5 Quantitative detection of arginine, NH4.+, and ammonia

From: rocF affects the production of tetramethylpyrazine in fermented soybeans with Bacillus subtilis BJ3-2

Strain

Arginine content

NH4+ content

Ammonia content

Concentration (mg/mL)

AVG ± SD

Concentration (mg/kg)

AVG ± SD

Concentration (ppm)

AVG ± SD

BJ3-2

0.552

0.505 ± 0.038

0.288

0.297 ± 0.0074

245.8

241.6 ± 12.1

0.502

0.296

253.8

0.460

0.306

225.1

BJ3-2ΔrocF

0.599

0.590 ± 0.008

0.396

0.410 ± 0.0104*

135.1

137.7 ± 14.4*

0.579

0.413

156.4

0.593

0.421

121.5

  1. * Significantly different at P < 0.05