Evaluation of conventional and response surface level optimisation of n-dodecane (n-C12) mineralisation by psychrotolerant strains isolated from pristine soil at Southern Victoria Island, Antarctica

Table 5 ANOVA for dodecane mineralisation by strain ADL36 in CCD

Source	Sum of squares	DF	Mean square	F value	Prob > F (p value)
Model	30,222.84	14	2158.77	38.35	< 0.0001*
A	884.65	1	884.65	15.72	0.0012*
B	1540.05	1	1540.05	27.36	0.0001*
C	6.76	1	6.76	0.12	0.7337**
D	6105.04	1	6105.04	108.46	< 0.0001*
A ²	2078.28	1	2078.28	36.92	< 0.0001*
B ²	10,690.90	1	10,690.90	189.94	< 0.0001*
C ²	10,321.36	1	10321.36	183.37	< 0.0001*
D ²	1414.90	1	1414.90	25.14	0.0002*
AB	271.25	1	271.25	4.82	0.0443*
AC	60.76	1	60.76	1.08	0.3153**
AD	240.30	1	240.30	4.27	0.0565**
BC	274.49	1	274.49	4.88	0.0432*
BD	1598.79	1	1598.79	28.40	< 0.0001*
CD	340.93	1	340.93	6.06	0.0265*
Residual	844.30	15	56.29
Lack of fit	740.26	10	74.03	3.56	0.0869**
Pure error	104.04	5
Cor total	31,067.13	29
Standard deviation	7.50		R²		0.9728
Mean	44.74		Adjusted R²		0.9475
C.V.	16.77		Predicted R²		0.8579
PRESS	4413.71		Adeq precision		18.503

A: pH; B: Temperature (°C); C: Diesel concentration (% v/v); D: NaCl concentration (% w/v)
* Significant; ** not significant

ISSN: 1475-2859