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Table 3 Analysis of variance for the response evaluated in the experimental design

From: Treatment of rice straw hemicellulosic hydrolysates with advanced oxidative processes: a new and promising detoxification method to improve the bioconversion process

Source of variation

Taguchi L16

Taguchi L8

Furans reduction

LMWPC

Total phenolics reduction

QP(%)****

QP(%)****

A - Fe+2

0.1

0.1

0.0

0.6

0.8

B - H2O2

0.3

0.8**

0.1

3.8

0.9

AB

0.0

0.0

0.6

0.0

0.0

C - UV

1.9**

0.2

0.0

2.3

3.9

BC

0.2

0.0

0.3

4.0

71.8**

DE

7.3*

4.4*

0.0

2.4

-

D - O3

87.8*

87.9*

95.5*

1.0

22.2***

BD

0.1

0.3

0.3

0.6

-

CD

0.6

0.0

0.0

0.0

-

E - pH

0.1

5.9*

0.2

74.6*

-

R2 (%)

97.0

99.0

95.5

74.6

94.0

  1. * Significant at 99% confidence level; ** Significant at 95% confidence level; *** Significant at 90% confidence level. **** Percentage in relation to that obtained in the semi-synthetic medium fermentation (QP = 0.36 g/L.h).
  2. Analysis of variance of the main effects and of its interactions factors on the responses: reductions concentrations of furans, low molecular weight phenolic compounds (LMWPC) and total phenolics, besides of the ethanol volumetric productivity by Pichia stipitis (QP), for the original design (Taguchi L16) and ethanol volumetric productivity to planning referent to process at alkaline pH only (Taguchi L8).
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Biotechnology for Biofuels and Bioproducts

ISSN: 2731-3654

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