Drop collapse assay on lotus leaf (Nelumbo nucifera): a simple and cost effective method for rapid detection of biosurfactants Journal title: Journal of Experimental Biology and Agricultural Sciences Authors: Meghmala S Waghmode, Neha N Patil, Pallavi S Gaikwad, Aparna B Gunjal, Neelu N Nawani, Balu P Kapadn... Subject(s):