AMB Express

Table 4 Effects of culture conditions on chitinase production by strain TC-1

From: Characterization of a novel chitinolytic Serratia marcescens strain TC-1 with broad insecticidal spectrum

Items tested	Chitinase activity (U ml⁻¹)
Carbon source
Coloidal chitin	18.89 ± 0.04 Aa
Chitin	12.69 ± 0.04 Bb
Starch	3.09 ± 0.06 Cd
Celullose	3.28 ± 0.03 Cc
Nitrogen source
Peptone	17.8 ± 0.17 Aa
Ammonium sulphate	9.49 ± 0.14 Cc
Yeast extract	15.37 ± 0.25 Bb
Beef extract	15.16 ± 0.19 Bb
Incubation time (h)
24	7.75 ± 0.24 Gh
30	8.2 ± 0.11 Fg
36	8.45 ± 0.11 Fg
42	9.98 ± 0.23 Ef
48	10.44 ± 0.05 De
54	12.81 ± 0.13 Cc
60	17.44 ± 0.07 Aa
66	14.69 ± 0.28 Bb
72	12.47 ± 0.19 Cd
Incubation temperature (°C)
24	10.55 ± 0.06 Cc
26	14.91 ± 0.09 Bb
28	17.33 ± 0.17 Aa
30	14.92 ± 0.15 Bb
32	9.69 ± 0.08 Cd
Colloidal concentration (g l^-1)
7.5	13.08 ± 0.25 Ee
8.0	14.39 ± 0.16 Dd
8.5	18.51 ± 0.09 Bb
9.0	18.68 ± 0.08 Bb
9.5	20.79 ± 0.19 Aa
10.0	16.43 ± 0.10 Cc
10.5	10.91 ± 0.10 Ff

The analysis of variance for each item was independently tested. Data with different capitals and lowercases in the same item represent significant differences at P < 0.01 and P < 0.05 levels, respectively

Back to article page