The effect of sorbate on L-serine and L-histidine uptake in Salmonella typhimurium was studied at various pH levels, temperatures, and amino acid and sorbate concentrations. Low pH had an apparent synergistic effect on amino acid uptake inhibition caused by sorbate. The relationship between sorbate concentration and the amount of amino acid uptake inhibition was not linear. Compared with L-hist...

Abstract In this paper, to develop a stable and efficient micro-frozen cold storage agent ensure the freshness of food during transportation, organic sorbitol aqueous solution was used as main energy agent, thermal properties multiple compound were investigated after adding potassium sorbate, glycine, highly absorbent resin. The experimental results proved that total mass fraction not more than...

Potassium sorbate (PS), sodium benzoate (SB) and methyl p-hydroxybenzoate (MHB) were investigated as surface treatments for their ability to inhibit the growth of 18 isolates of spoilage and pathogenic bacteria from two types of Portuguese dry smoked sausages (Chouriço). MHB significantly inhibited the growth rate of 12 of the isolates (p<0.05) whereas no effect was observed for four isolates o...

Chemoenzymatic assay systems are widely used to detect toxicants in various samples, including food and environment specimens. These methods based on the ability of types toxicant specifically inhibit/activate functions individual enzymes or enzyme systems. The present study examines possibility using proteolytic trypsin as a specific marker protease inhibitors different samples. shows that act...