Biosurfactants are surface-active compounds derived from varied microbial sources including bacteria and fungi. They are secreted extracellularly and have a wide range of exciting properties for bioremediation purposes. They also have vast applications in the food and medicine industry. With an objective of isolating microorganisms for enhanced oil recovery (EOR) operations, the study involved ...

Bacillus subtilis K1 isolated from aerial roots of banyan tree secreted mixture of surfactins, iturins and fengycins with high degree of heterogeneity. The extracellular extract consisting of mixture of these cyclic lipopeptides exhibited very good emulsification activity as well as excellent emulsion stability. The culture accumulated maximum surfactant up to 48 h of growth during batch fermen...

background :    proteus spp. belongs to the family of enterobacteriaceae . these bacteria are gram-negative and motile microorganisms and known as the third most common causes of urinary tract infections. the aim of the current study was to investigate the effects of some secondary metabolites from probiotic strains of lactobacillus spp. on swarming and growth of proteus mirabilis and p. vulgar...

Biosurfactant (BS) production by Bacillus tequilensis KM15 is investigated using fish processing wastes as medium components. Bocha (B) and Rohu (RR) scales are selected cost-effective substrates for BS optimized together with pH, the incubation period (IP), inoculum size (IS) response surface method (RSM). RSM model has demonstrated following optimum conditions production: 4% each, 2%, at pH 8...

Isolation, Identification, and Investigation of Biological Properties Biosurfactant-Producing Probiotics Magnesium Nanoparticles from Local Dairy Samples: A Laboratory Study

Abstract When pollutants like petroleum hydrocarbons as one of the major origins aquatic pollution, enter environment, they alter biological and/or physicochemical characteristics aforementioned sites due to their potential bioaccumulation, biomagnification, and resistance against biodegradation besides its toxicity carcinogenicity in nature. Thus, importance degradation, deterioration remediat...

Oil contamination in the soil has been a major threat to the environment because of the poor solubility. Crude oil can be accidentally or deliberately released into the environment leads to serious pollution problems (Trindale et al., 2005). Bioremediation is a waste management technique that involves the use of the organisms to remove or neutralize pollutants from a contaminated site. An alter...

Lactic acid bacteria (LAB) are ubiquitous and well-known commensal bacteria in the human and animal microflora. LAB are extensively studied and used in a variety of industrial and food fermentations. They are widely used for humans and animals as adjuvants, probiotic formulation, and dietary supplements and in other food fermentation applications. In the present investigation, LAB were isolated...

The objective of this study was to investigate the influence of the biosurfactant BS-UC on surface properties of microbial cells and biodegradation of petroleum hydrocarbons. The biosurfactant BS-UC was produced by Candida antarctica from n-undecane as the substrate. It was found that the addition of BS-UC influenced positively the emulsification and the biodegradation of a variety of n-alkanes...

Oligosaccharides have been used for an environmentally friendly insect control in the agricultural industry. In order to discover novel eco-friendly pesticides, a series of partially acetylated oligorhamnoses mezzettiasides, 2-8, and their analogues, 9-14, with biosurfactant characteristics were designed and synthesized, some of which exhibited comparable to or even stronger aphicidal activity ...