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Results of biochemical tests for chemical characterization of the biosurfactants. + = positive result; − = negative result.
| isolates | protein detection |
carbohydrate detection | lipid detection | interpretation | ||
|---|---|---|---|---|---|---|
| ninhydrin | biuret | TLC (ninhydrin) | Molisch | TLC (iodine vapour) | ||
| SD4 | − | − | − | + | + | glycolipid |
| SD11 | − | − | − | + | + | glycolipid |
| SD12 | − | − | − | + | + | glycolipid |
| SD13 | + | + | + | – | + | lipopeptide |
