Enhanced sensitivity of Escherichia coli umuC to photodynamic inactivation by angelicin (isopsoralen)

Photodynamic inactivation of Escherichia coli by Ru(II) complexes.

[Ru(II)(bpy)(2)(dppn)](2+) (bpy = 2,2'-bipyridine, dppn = 4,5,9,16-tetraazadibenzo[a,c]naphthacene) was found to be able to photoinactivate Gram-negative Escherichia coli efficiently, showing the potential of transition-metal complexes as photosensitizers in the field of photodynamic antimicrobial chemotherapy (PACT).

Photodynamic inactivation effect of methylene blue and toluidine blue O on ATCC Escherichia coli and clinical isolate of multidrug-resistant Escherichia coli

Photodynamic inactivation and mutagenesis by angelicin (isopsoralen) or thiopyronin (methylene red) in wild-type and repair-deficient strains of bacteriophage T4.

Photodynamic inactivation of bacteriophage T4 particles, mediated by either angelicin or thiopyronin, is enhanced by defects in the T4 uvsW-uvsX-uvsY postreplication repair system but not by a defect in the denV pyrimidine-dimer-excision system. There was no evidence for functional interactions between the two repair systems. As observed previously with 8-methoxypsoralen, photodynamic mutagenes...

Enhanced Expression of Recombinant Activin A in Escherichia coli by Optimization of Induction Parameters

Activin A is a member of the transforming growth factor β super family. Because of its extensive clinical usages, its recombinant production is beneficial. In this study, activin A was expressed in E. coli using the pET 21a expression vector. The optimization of the activin A production in E. coli was done by using the response surface methodology (RSM). At this stage, the effect of IPTG and la...

Investigation on Escherichia Coli Inactivation and Some Quality Changes in Carrot Juice by Ultrasound Technique

In this study Response Surface Methodology was used to optimize process conditions and to evaluate the effect of ultrasound on quality attributes (antioxidant activity, pH, total soluble solid, turbidity) and the inactivation of Escherichia coli bacteria in carrot juice. Independent variables in this study were temperature (25-50°C), time (20-40 min) and frequency (0-130 kHz). In this study the...