Table 2 Comparison of methionine and lysine production by P. acidilactici Kp10 using different carbon sources
From: Starch extracted from pineapple (Ananas comosus) plant stem as a source for amino acids production
Parameters | Carbon Source | ||
|---|---|---|---|
Glucose | Starch | Cellulosic materials | |
Maximum cell growth (OD600) | 1.86 ± 0.02 | 2.26 ± 0.05 | 1.69 ± 0.05 |
Overall sugar consumption (g/L) | 8.38 ± 0.08 | 9.86 ± 0.01 | 9.09 ± 0.01 |
Maximum product formation | |||
 Methionine (mg/L) | 75.50 ± 1.41 | 40.25 ± 0.71 | 37.31 ± 0.91 |
 Lysine (g/L) | 1.61 ± 0.13 | 0.97 ± 0.02 | 0.84 ± 0.01 |
Incubation time for maximum production (h) | |||
 Methionine | 2 | 4 | 4 |
 Lysine | 12 | 10 | 4 |
Substrate consumed at respected time (g/L) | |||
 Methionine | 5.15 ± 0.06 | 5.71 ± 0.07 | 3.70 ± 0.01 |
 Lysine | 6.98 ± 0.00 | 8.76 ± 0.01 | 3.70 ± 0.01 |
Maximum product yield | |||
 Methionine (mg/g) | 14.66 | 7.04 | 10.08 |
 Lysine (g/g) | 0.23 | 0.11 | 0.23 |
Maximum productivity | |||
 Methionine (mg/L/h) | 37.75 | 10.06 | 9.33 |
 Lysine (g/L/h) | 0.134 | 0.097 | 0.21 |