Mechanism of Action against Food Spoilage Yeasts and Bioactivity of , and Plant Solvent Extracts.

Bioactive properties of solvent extracts of , and investigated. The antimicrobial activities evaluated using agar disc diffusion method against two bacteria ( and ) and six weak-acid resistant yeasts (, , , , and ). The antioxidant activities determined using DPPH (2,2-diphenyl-1-picrylhydrazyl) free radical scavenging and reducing power assays.

Real-time assessment of the microbial quality of retail shrimp using CO2 evolution rate.

A real-time CO(2) evolution rate (CER) method together with conventional cultural and sensory techniques were utilized to determine the microbial quality and shelf life of several types of shrimp products: chloramphenicol (CAP) treated, imported farm raised, and domestic wild caught. Treatment with CAP was used to create different bacterial loads in shrimp samples to demonstrate the ability and sensitivity of the CER method for differentiating the bacterial activity in samples. Samples were divided into control (nontreated) and 0, 10, and 30 ppm of CAP treatment groups and stored at 4°C.