|. Nationally, the median wage for physicists is $6,970 per month ($40.23 per hour). Half of all physicists earn between $5,430 and $8,690 per month ($31.35 and $50.14 per hour). Most physicists can expect benefits such as paid vacation, sick leave, health insurance, and a retirement plan.In Minnesota, the median wage for physicists is $36.88 per hour, or $6,391 per month for a full-time worker.Half of all physicists earn between $31.78 and $49.10 per hour, or between $5,507 and $8,509 per month.ost physicists can expect benefits such as paid vacation, sick leave, health insurance, and a retirement plan. In Minnesota, the median wage for physicists is $36.88 per hour, or $6,391 per month for a full-time worker.
Food contamination refers to the presence in food of harmful chemicals and microorganisms which can cause consumer illness.rocessing contaminants are generated during the processing of foods (e.g., heating, fermentation). They are absent in the raw materials, and are formed by chemical reactions between natural and/or added food constituents during processing.
Food spoilage refers to undesirable changes occurring in food due to the influence of air, heat, light, moisture, which foster the growth of microorganisms. Foods take different period of time to lose their natural form though spoilage. In context to food preservation foods are classified as perishable, (meat, fish, milk fruits and some vegetable), semi perishable (eggs, onions, potatoes, carrot, beans) and non-perishable (cereals, pulse nuts). Foods are spoilt by the action of: (1) Micro-organisms (2) Enzymes and (3) Insects. 1. Micro-organisms: The micro-organisms responsible for food spoilage are moulds, yeast and bacteria. Moulds: Moulds are in the form of threads developed on perishable foods and are easily visible to the eye. They contain spores which can spread through the air and start new mould plants.