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Table 6 Effects estimates, standard errors, t-test and p-values for the optimization of lipid extraction yield from Rhodotorula g. according to the full factorial CCRD

From: Optimization of lipid extraction from the oleaginous yeasts Rhodotorula glutinis and Lipomyces kononenkoae

Variables and interactions

Estimated effects

Standard errors

t-value

p-value

Cycles (L)

1.020

0.563

1.811

0.104

Cycles (Q)

0.333

1.077

0.309

0.764

Time (L)

0.140

0.563

0.249

0.809

Time (Q)

− 1.267

1.077

− 1.176

0.270

Beads (L)

1.920

0.563

3.410

0.008

Beads (Q)

− 1.967

1.077

− 1.826

0.101

1L by 2L

− 0.450

0.630

− 0.715

0.493

1L by 3L

− 0.900

0.630

− 1.430

0.187

2L by 3L

− 0.200

0.630

− 0.318

0.758

  1. L linear, Q quadratic