Temperatures in the high pressure shock state have been determined by measurement of optical radiation from pure samples of forsteritc (Mg2 SiOn), a-quartz, and fused silica. Shock waves of known amplitude were produced by tantalum flyer impact using a two-stage light gas gun. Shock pressures in the ranges 150-175 GPa and 70-115 GPa for Mg: SiOn and SiO2 respectively were achieved, and temperat...

nisin has numerous applications as a natural preservative in foods, including dairy product, canned food, processed cheese and milk. several studies demonstrated that proteolytic degradation and the interaction of nisin with food components might result in decreased its antimicrobial activity. encapsulation of antimicrobial peptides into nanoliposomes may offer a potential alternative to protec...

BACKGROUND Metal pollution of waterways directly affects human health and can impact the food chain. Seafood living in polluted water can accumulate trace metals. The purpose of this study was to analyze the toxic metals Pb and Cd and the dietary essential metals Zn and Mn in 120 cans of tuna species from four different brands processed in Iran and purchased in 2012. RESULTS The mean level of...

To detect and identify six varieties of genetically modified (GM) maize, polymerase chain reaction (PCR) assays were performed in the present study. The effect of heat treatment on the detection of the genes by the PCR methods was investigated. Maize samples were subjected to 100 ̊C and 121 ̊C heat treatment for different time intervals, and PCR tests were then conducted by using primers specific...

Roselle calyces are rich in nutrient, but the utilization of its calyces in the preparation of jam is not popular in Africa. The quality attributes of stored Roselle jam from dark and light red varieties were investigated. Roselle jam was processed using the open kettle method. The processed jams were stored at ambient and cold temperatures. At two weeks interval they were evaluated for pH, tit...

Background: Histamine is a food-borne chemical hazard which causes scombroid poisoning. The efficiency of histamine recovery from fish is greatly influenced by selection of an appropriate extraction solvent. Hence, in this study the efficiency of different extraction solvents on recovery of histamine from fresh, frozen and canned fish was evaluated. Methods: Fresh, frozen and canned rainbow tr...

AIM The change of antemortem blood alcohol concentration (BAC) in inadequately processed samples was examined. METHODS The study was performed on nine healthy, sober volunteers after overnight fasting. Blood samples were divided into groups and stored, with or without NaF, for varying time periods (12, 24 and 48 h) and at different temperatures (4 degrees C and 20 degrees C). BAC analysis was...

Background: The presence of heavy metals in the environment could constitute a hazard to food security and public health. These can be accumulated in aquatic animals such as fish. Canned fish is consumed regularly in many countries. In this study, the levels of heavy metals Cu, Ni, Fe and Cr were evaluated in commercial canned fish products that are commonly consumed in Iran. The canned fish ...