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Table 5 Coefficient and p values for independent variables and their interactions, obtained from optimization of culture media composition

From: Vinasse: from a residue to a high added value biopolymer

Variable

Coefficient

p value

C

− 0.2956

0.044

N

− 0.3384

0.028

Ph

− 0.0155

0.894

C2

− 0.0783

0.651

C–N

0.2130

0.231

C–Ph

− 0.3106

0.104

N2

0.5745

0.017

N–Ph

− 0.2287

0.203

Ph2

0.3570

0.080

  1. C carbon; N nitrogen; Ph phosphorous