Development of a volatile amine sensor for the monitoring of fish spoilage.

A sensor with potential for the development of a "chemical barcode" for real-time monitoring of fish freshness is described. This on-package sensor contains a pH sensitive dye, bromocresol green, that responds through visible colour change to basic volatile spoilage compounds, such as trimethylamine (TMA), ammonia (NH(3)) and dimethylamine (DMA) collectively known as Total Volatile Basic Nitrogen (TVB-N). The sensor characteristics were studied as well as its response with standard ammonia gas.

Bioaugmentation of activated sludge with two Pseudomonas putida strains for the degradation of 4-chlorophenol.

The augmentation of activated sludge with two strains of Pseudomonas putida, CP1 and A(a) was investigated. Both strains of bacteria degraded 1.56 mM 4-chlorophenol.