Effect of Different Carbon Sources on Biosurfactants’ Production by Three Strains of Lactobacillus spp.
Table 9
Emulsifying activity of biosurfactants produced by the three Lactobacillus strains while using sugar cane molasse and glycerol as substrate.
Substrates
LAB strains
Emulsification index (%)
Time (hours)
1 h
24 h
48 h
72 h
96 h
Molasses
Lb. TM1
89.00 ± 4.24
88.50 ± 2.92
86.5 ± 2.12
83.00 ± 2.41
64.50 ± 0.70
Lb. N2
78.00 ± 3.50
77.25 ± 1.06
75.50 ± 0.70
73.00 ± 2.82
61.00 ± 3.50
Lb. G88
70.20 ± 0.40
68.00 ± 1.41
66.50 ± 1.41
52.50 ± 2.12
46.50 ± 2.12
Glycerol
Lb. TM1
73.00 ± 2.82
72.00 ± 1.41
69.00 ± 4.24
67.00 ± 3.41
50.50 ± 2.12
Lb. N2
91.50 ± 3.70
89.00 ± 1.41
87.00 ± 2.42
85.50 ± 3.12
67.50 ± 3.53
Lb. G88
64.00 ± 2.82
63.50 ± 0.70
61.50 ± 3.53
59.50 ± 2.70
49.00 ± 1.41
Control
SDS 1% (w/v)
91.00 ± 1.41
89.50 ± 0.70
85.00 ± 1.41
65.00 ± 2.82
60.50 ± 0.70
Distilled water
11.50 ± 0.12
0.0 ± 0.0
0.0 ± 0.0
0.0 ± 0.0
0.0 ± 0.0
LAB = lactic acid bacteria; Lb. TM1 = Lactobacillus cellobiosus TM1; Lb. N2 = Lactobacillus delbrueckii N2; Lb. G88 = Lactobacillus plantarum G88; values are means ± standard deviation; ; a, b, c, and so on indicated column comparison; values followed by the same letter in superscript on the same line are not significantly different () according to Duncan’s multiple range test.
