Inactivation of food poisoning bacteria and Geobacillus stearothermophilus spores by high pressure carbon dioxide treatment

Solvent effects on phenolic contents and biological activities of the halophyte Limoniastrum monopetalum leaves

“…For that antimicrobial activity of L. monopetalum was only evaluated for this kind of extract. The disk diffusion method was used to determine the antimicrobial activity towards selected food borne pathogens namely: Escherichia coli, Pseudomonas aeruginosa, Staphylococcus aureus and Micrococcus luteus (Furukawa et al, 2009). Crude leaf extracts inhibited microorganism growth, depending on the strains in question.…”

Inactivation of Saccharomyces cerevisiae in conference pear with high pressure carbon dioxide and effects on pear quality

“…The efficiency of the HPCD method can be influenced by the natural environment or by a specific food, since the natural matrix (especially if solid) may complicate CO 2 actuation (García- Gonzalez et al, 2009;Furukawa et al, 2009). For example, Erkmen (1997) observed that Staphylococcus aureus and other aerobic bacteria were more difficult to inactivate by CO 2 when they were suspended in whole milk.…”

Synergistic effect of supercritical carbon dioxide and peracetic acid on microbial inactivation in shredded Mozzarella-type cheese and its storage stability at ambient temperature

“…Furthermore, the capacity of this bacterium to adhere to stainless steel and grow in biofilms appears to be a likely cause of contamination of manufactured dairy products (Flint, Palmer, Bloemen, Brooks, & Crawford, 2001). According to previous studies, SCCO 2 treatments can only inactivate G. stearothermophilus spores substantially when a combination of high pressures (!35 MPa) and elevated temperatures (!50 C) are applied together with co-solvents (Furukawa et al, 2009;Hemmer et al, 2007;Watanabe et al, 2003). A milder SCCO 2 -based sterilization process (9.6 MPa, 35 C, 1 h) using a low concentration of PAA (0.002%) was developed by White et al (2006) to achieve a 6-log inactivation of G. stearothermophilus spores.…”