UNIVERSITÉ PAUL CÉZANNE, AIX MARSEILLE III - IMEP
UNIVERSITÉ PAUL CÉZANNE, AIX MARSEILLE III - IMEP
UNIVERSITÉ PAUL CÉZANNE, AIX MARSEILLE III - IMEP
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3.3. Screening design<br />
Résultats et discussion. Chapitre 3: Evaluation des facteurs de croissance<br />
Sixteen experiments have been carried out according to the preparation method<br />
described above and the conditions fixed by the experimental design. Although the main<br />
purpose was to achieve the maximization of mycelial biomass production and the<br />
maximization of total phenol removal. The obtained values related to the mycelia biomass<br />
(mg of mycelium/g of substrate) and total phenol removal (%) are as shown in Table7.<br />
Table 7. Experimental conditions of the screening design with 6 factors (A-F) and the<br />
corresponding experimental responses.<br />
Run<br />
no<br />
A B C D E F Biomass<br />
Yield (mg.g -1 )<br />
Total phenol<br />
removal (%)<br />
1 5 20 25 20 T2 SO 48.72 82.35<br />
2 6 30 10 10 T1 SO 20.30 41.28<br />
3 5 20 25 20 T1 MS1 34.50 61.65<br />
4 6 30 10 10 T2 MS1 16.24 42.00<br />
5 5 20 10 10 T2 MS3 12.18 24.12<br />
6 6 30 25 20 T1 MS3 33.50 51.91<br />
7 5 20 10 10 T1 MS2 29.44 36.23<br />
8 6 30 25 20 T2 MS2 38.56 63.75<br />
9 5 30 25 10 T2 MS4 12.18 15.48<br />
10 6 20 10 20 T1 MS4 22.32 29.49<br />
11 5 30 25 10 T1 MS3 14.20 31.51<br />
12 6 20 10 20 T2 MS3 28.42 47.20<br />
13 5 30 10 20 T2 MS1 34.50 45.45<br />
14 6 20 25 10 T1 MS1 18.26 40.71<br />
15 5 30 10 20 T1 SO 44.66 82.68<br />
16 6 20 25 10 T2 SO 30.44 47.98<br />
3.4. Variable effects on mycelial biomass response<br />
Coefficient values (the weight associated to each factor level) and statistical analyses,<br />
using t-test are reported in Table 8a. These results are illustrated by the two histograms shown<br />
in Fig.1. Fig. 1a represents the weight of each factor taking its highest level as reference. Fig.<br />
1b represents the differential effects of each factor when considering two different levels<br />
taken two by two (Mathieu and Phan-Than-Luu 1997; Lewis et al., 1999).<br />
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