In vitro antioxidant anti inflammatory and cytotoxicity activities from Hexane extract of Bryonopsis laciniosa fruits.

Bryonopsis laciniosa also known as “Shivlingi” annual climber with bright red fruits and is reported to be highly medicinal in India. As a folk medicine, the plant is used in treatment of broad range of diseases and disorders. In the present study, Hexane extract of B. laciniosa fruits were used to evaluate in vitro anti inflammatory, antioxidant and Cytotoxicity (towards MCF-7 cell line) activities. In vitro anti inflammatory activity by inhibition of protein denaturation, antioxidant assays like DPPH, ABTS, H2O2 and FRAP were used to measure the antioxidant capacity of the hexane extracts and cytotoxicity activity using MCF-7 breast cancer cell line. Hexane extract showed the effective antioxidant activity in all assays compared to ascorbic acid and BHT. The results for In vitro anti inflammatory activity of hexane extract and Dichlofenac drug were equivalent, hexane extract showed promising activity for inhibition of protein denaturation assay. The cytotoxicity activity from hexane extract was noticeable against MCF-7 cell line. The overall results show potential application of Bryonopsis laciniosa fruits suggesting their potential application as a health-promoting functional ingredient or natural preservative in foods

Novel application of Nerium leaf and Image J software in drop collapse assay for rapid screening of biosurfactant producing microorganisms

484-492Biosurfactants are attractive molecules with varied applicationsmainly oil degradation, emulsification, bioremediation, therapeutics and conjugation of nanoparticles. The existing screening methods for biosurfactants are inappropriate and too tedious. Here, we have explored a novel approach with drop collapse assay wherein we replaced the microtiter well plate with the naturally hydrophobic Nerium (Nerium oleander L.) leaf. The stability of beaded drops on the leaf indicates negative phenomenon, and spreading of drop indicates positive phenomenon for surfactant property, as confirmed by the measuring drop diameter using Image J software. Fifty five bacterial cultures isolated from oil contaminated site were screened through this novel approach which revealed that the isolates DNM49 (6.75±0.29 mm), DNM50 (7.45±0.19 mm) and DNM51 (6.14±0.82 mm) were the best in terms of surface tension reduction, although thirty other isolates were also found to be positive. A gradation of activity in terms of surface tension reduction was also established based on drop diameter. The results demonstrated promising application of Nerium leaf with Image J software in drop collapse assay as an eco-friendly and cost-effective and technically authenticated alternative to the existing assays

Novel application of Nerium leaf and Image J software in drop collapse assay for rapid screening of biosurfactant producing microorganisms

Biosurfactants are attractive molecules with varied applicationsmainly oil degradation, emulsification, bioremediation, therapeutics and conjugation of nanoparticles. The existing screening methods for biosurfactants are inappropriate and too tedious. Here, we have explored a novel approach with drop collapse assay wherein we replaced the microtiter well plate with the naturally hydrophobic Nerium (Nerium oleander L.) leaf. The stability of beaded drops on the leaf indicates negative phenomenon, and spreading of drop indicates positive phenomenon for surfactant property, as confirmed by the measuring drop diameter using Image J software. Fifty five bacterial cultures isolated from oil contaminated site were screened through this novel approach which revealed that the isolates DNM49 (6.75±0.29 mm), DNM50 (7.45±0.19 mm) and DNM51 (6.14±0.82 mm) were the best in terms of surface tension reduction, although thirty other isolates were also found to be positive. A gradation of activity in terms of surface tension reduction was also established based on drop diameter. The results demonstrated promising application of Nerium leaf with Image J software in drop collapse assay as an eco-friendly and cost-effective and technically authenticated alternative to the existing assays