Sample EA (U) Kerosene Crude oil Sunflower oil Soybean oil Peanut oil Rice bran oil Gingelly oil Olive oil Emulsifying index (in Percentage) ETW-2 0.628 75 85 85 85 80 95 85 85 ETW-4P 1.008 75 90 85 85 85 95 80 85 ETW-5P 0.261 75 95 80 85 85 90 80 85 ESS-1 0.334 75 80 85 80 80 90 80 80 ESW-NA 0.458 70 85 85 80 85 95 85 80 ESW-NA12S 0.302 70 90 80 85 85 90 80 80

Table 1b: Emulsifying activity and emulsification index of biosurfactants from six marine isolates.