Screening, Genetics and Biophysics -- Screening Concepts for the Isolation of Biosurfactant Producing Microorganisms -- Molecular Genetics of Biosurfactant Synthesis in Microorganisms -- Interaction of Dirhamnolipid Biosurfactants with Phospholipid Membranes: A Molecular Level Study -- Properties And Potentialapplications -- Microbial Surfactants and Their Potential Applications: An Overview -- Microbial Biosurfactants and Biodegradation -- Biomedical and therapeutic applications of biosurfactants -- Microbial Surfactants of Marine Origin: Potentials and Prospects -- Biomimetic Amphiphiles: Properties and Potential Use -- Applications of Biological Surface Active Compounds in Remediation Technologies -- Possibilities and Challenges for Biosurfactants Use in Petroleum Industry -- Bacterial Biosurfactants, and Their Role in Microbial Enhanced Oil Recovery (MEOR) -- Biosurfactant Production -- Molecular Engineering Aspects for the Production of New and Modified Biosurfactants -- Rhamnolipid Surfactants: Alternative Substrates, New Strategies -- Selected Microbial Glycolipids: Production, Modification and Characterization -- Production of Microbial Biosurfactants by Solid-State Cultivation -- Rhamnolipid Biosurfactants: Production and their Potential in Environmental Biotechnology -- Biosurfactant's Role in Bioremediation of NAPL and Fermentative Production -- Biosurfactants from Yeasts: Characteristics, Production and Application -- Environmentally Friendly Biosurfactants Produced by Yeasts -- Synthesis of Biosurfactants and Their Advantages to Microorganisms and Mankind -- Enrichment and Purification of Lipopeptide Biosurfactants -- Production of Surface Active Compounds by Biocatalyst Technology -- The Most Studied Biosurfactants -- Structural and Molecular Characteristics of Lichenysin and Its Relationship with Surface Activity -- Surfactin: Biosynthesis, Genetics and Potential Applications. The microbial world has given us many surprises including microbes that grow under extremely harsh conditions (122C at 40 MPa), novel metabolisms such as the uranium and perchlorate reduction, and novel chemicals that can be used to control diseases. We continually face new and difficult problems such as the need to transition to more carbon-neutral energy sources and to find eco-friendly chemicals and to find new drugs to treat disease. Will it be possible to tap into the seemingly limitless potential of microbial activity to solve our current and future problems?The answer to this question is probably yes. We are already looking to the microbial world to provide new energy sources, green chemicals to replace those made from petroleum, and new drugs to fight disease. To help us along these paths, we are deciphering how microorganisms interact with each other. We know that microbial populations interact and communicate with each other. The language that microbes use is chemical where small molecules are exchanged among different microbial cells. Sometimes, these chemicals suppress activities of competitors and could be used as antibiotics or may have other therapeutic uses. Other times, the chemicals stimulate complex responses in microbial populations such as fruiting body or biofilm formation. By understanding the conversation that microbes are having among themselves, e. g.