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Table 1 Taguchi L9 orthogonal array

From: Optimization of cultural conditions for conversion of glycerol to ethanol by Enterobacter aerogenes S012

Experiment T A P I
1 1 1 1 1
2 1 2 2 2
3 1 3 3 3
4 2 1 2 3
5 2 2 3 1
6 2 3 1 2
7 3 1 3 2
8 3 2 1 3
9 3 3 2 1
  1. aAbbreviations: Gly – glycerol, Suc – succinate, Lac – lactate, Ace – acetate, 1,3-Pdo – 1,3-propanediol, EtOH – ethanol, Ae – aerobic, An – anaerobic, 1dAn – 1 day anaerobic process.
  2. bT1, T2, T3, = 30°C, 35°C, and 40°C; A1, A2, and A3 = 120 rpm, 160 rpm, 200 rpm; P1, P2, and P3 = 6.0, 6.5, 7.0; and I1, I2, I3 = 3%, 4%, 5%.