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What Are The Four Main Areas Of Biological Contamination

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There are many incidents related to biological contamination but mostly are avoided due to a lack of data or resources in indoor areas. Qualitative and quantitative profile of microorganisms of indoor space is strongly influenced by the climatic conditions of that area. Equator countries are likely to more chances of disease than temperate or polar regions . Behavioral factors are often useful and least expensive for maintaining air quality and reducing adverse health effects on us .

Types Of Food Contaminants

Food contaminants typically include environmental contaminants, food processing contaminants, unapproved adulterants and food additives, and migrants from packaging materials . Environmental contaminants are impurities that are either introduced by human or occurring naturally in water, air or soil. Food processing contaminants include those undesirable compounds, which are formed in the food during baking, roasting, canning, heating, fermentation, or hydrolysis . The direct food contact with packaging materials can lead to chemical contamination due to the migration of some harmful substances into foods. Further, use of unapproved or erroneous additives may result in food contamination.

What Is An Example Of A Physical Contaminant Servsafe

4.3/5examplesphysical contaminants

Physical contamination occurs when physical objects contaminate food. Common physical contaminants include hair, glass, metal, pests, jewellery, dirt and fake nails.

Also, which of the following is an example of a chemical contamination? Chemical contaminants can be present in foods mainly as a result of the use of agrochemicals, such as residues of pesticides and veterinary drugs, contamination from environmental sources , cross-contamination or formation during food processing, migration from food packaging materials,

Beside above, what are two examples of a physical contaminant?

Physical contamination occurs when actual objects contaminate the food. Common physical contaminants include hair, glass, metal, pests, jewellery, dirt and fake nails.

Which of the following is an example of biological contaminant?

Examples of biological contaminants and the problems they cause include: Bacteria, like Salmonella, which will lead to nausea, vomiting, and diarrhea. Viruses, such as rotavirus, which will lead to the stomach flu. Parasites, like Ascaris lumbricoides, a roundworm that will gladly live inside your gut.

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How Can Biological Contamination Occur

Beside this, People with Weak Immune System, work practices and safety equipment to use) by the same risk assessment process as biological agents, insects , Pregnant Women, Theres an exception to thischemical, and arachnids , viruses, such as Bacillus anthracis spores, rodents, Kids who are Younger than 5 Years, so it is critical that the safe food handling and prevention procedures outline in the rest of the book be followed.

What Are The Four Types Of Food Contamination


When food becomes contaminated with something that shouldn’t be there, it can be dangerous to your customers and disastrous for your business.

That’s why preventing food contamination is such an important component of food safety. Before you can prevent it, you have to understand what kinds of things can contaminate food and the mechanisms that can lead to contamination.

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What Is Biological Contamination

Biological and microbial contamination are sometimes used interchangeably, but biological contamination is technically a broader umbrella.

Microbial contamination covers microorganisms like bacteria, viruses, parasites, protozoa, fungi , and prions. It can also include the toxins these microorganisms produce. Biological contaminants include all that but also any biological matter produced by humans, rodents, or insects.

Microbial contamination is the most common cause of foodborne illness, sometimes called food poisoning. It’s also a common source of food spoilage.

What Could Cause Contamination

Infectious organisms including bacteria, viruses and parasites or their toxins are the most common causes of food poisoning. Infectious organisms or their toxins can contaminate food at any point of processing or production. Contamination can also occur at home if food is incorrectly handled or cooked.

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What Is Meant By Food Contamination

Food contamination is generally defined as foods that are spoiled or tainted because they either contain microorganisms, such as bacteria or parasites, or toxic substances that make them unfit for consumption. A food contaminant can be biological, chemical or physical in nature, with the former being more common.

Allergenic Contamination Of Food

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Allergenic contamination occurs when a food that causes an allergic reaction comes into contact with another food. For example, if the same knife used to cut normal bread is then used to cut gluten-free bread, or if pasta is stored in a tub that used to contain peanuts.

There are 14 named allergens. These are the foods that account for the majority of food allergies in people. The list includes things like gluten, peanuts, eggs, mustard, soy, and fish.

For someone with a food allergy, consuming even a tiny amount of that food is enough to cause a fatal reaction. As a result, its essential that you prevent allergenic contamination of food in your premises. In order to do this, you must:

  • Ensure your food comes from approved suppliers who you know will take allergenic contamination seriously.
  • Keep preparation areas, equipment, utensils, and cloths that you use for allergenic foods separate to those you use for other foods.
  • Thoroughly clean and disinfect your kitchen regularly and especially after preparing food that contains one of the fourteen allergens.

All food is at risk of one of the four types of contamination: chemical, microbial, physical, and allergenic. However, its essential that you prevent these contaminants from affecting the safety of your food. Food poisoning, injury, and allergic reactions are all consequences of contamination but, by following safe working practices, you can help to prevent them all.

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Causes Of Foodborne Illnesses

There are many myths about foodborne illness and food poisoning. Table 1 dispels some common misconceptions about food poisoning.

Table 1. Food poisoning myths

Myth Fact
1. A food with enough pathogens to make you sick will look, smell, or taste bad. 1. A food with enough pathogens to make you sick may look, smell, or taste good.
2. Really fresh food cannot make people sick. 2. Really fresh food can cause food poisoning if it is not properly handled.
3. Only dirty kitchens can make people sick. 3. Even clean kitchens can make people sick.
4. Properly cooked food can never cause food poisoning. 4. Food poisoning can occur even when foods are properly cooked.

Foodborne illnesses can be caused by any of:

  • Contaminants
  • Chemical, such as cleaning agents or pesticides
  • Physical, such as hair, bandages, or glass
  • Biological, such as pathogens and microbes introduced from infected workers, unsanitary work surfaces, or contaminated water

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Which Type Of Contamination Escalates Gets Bigger When Food Is Left Out Too Long

If that food is perishablemeaning a food that should be refrigerated to prevent bacteria from multiplying at room temperaturethen a foodborne illness is possible if the food is temperature abused. When contaminated food is left out more than two hours at room temperature, Staph aureus begins to grow and will

Common Cooling Tower Problems & Solutions

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This article will help you understand Common Cooling Tower Problems & Solutions;so you can better care for your commercial or industrial property. Good business starts with a good budget that includes keeping the overhead down. Part of every business is having a clean and comfortable place for customers and clients to do business in. Large commercial properties feature cooling towers and chillers that must work together to keep these spaces cool and comfortable during the hot parts of the year. It is important to know the common cooling tower problems & solutions to help keep your budget under control.

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What Is Direct Contamination

Direct cross-contamination allowing raw food that has food poisoning bacteria on it to touch cooked or ready to eat food. This is called the route of contamination. Common vehicles of contamination include food-preparation surfaces, chopping and cutting boards, knives and utensils, cloths and hands.

Physical Contamination Of Food

Physical contamination happens when a food has been contaminated by a foreign object. It can occur at any stage of food delivery and preparation. Physical contamination can cause serious harm to the consumer, including broken teeth or choking.

Types of physical contaminants that can be found in food include jewellery, hair, plastic, bones, stones, pest bodies, and cloth. Additionally, if there are problems with the food premises or equipment, such as flaking paint or loose screws in a piece of equipment, then these may also enter food. Physical contaminants may even carry harmful bacteria, posing an even greater risk.

You can prevent physical contamination through:

  • Replacing any damaged equipment immediately.
  • Reporting any faults with equipment and premises without delay.
  • Having a thorough pest control system in place.
  • Following dress code principles, such as removing jewellery when handling food and wearing a hairnet.

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Volatile Organic Compounds And Fungi

Volatile organic compounds are low molecular weight chemicals with less solubility and high vapor pressure. VOC can also be produced as the metabolism of microorganisms and thus known as microbial volatile organic compounds . The identification of mVOC in indoor air is an indicator of the presence of fungi even if quantitative measurements are negative. There are some mVOCs that function as indicators of biological contamination such as 2octen-1-ol. This compound is strongly emitted in the initial stages of growth of Aspergillus spp., Alternaria alternata and Penicillium spp., so it has been related as a non-specific indicator of fungal contamination .

Control Of Biological Contaminants

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Control of biological contamination in indoor air is predominantly based on the avoidance of conditions that provide a substrate for the growth of viable particles, and secondarily on the containment and removal of such growth . By the use of air filters and improving ventilation performance may be a viable solution to control bioaerosols . Most control strategies applied in indoor areas are based on controlling the dew point, which reduces the growth of various microorganisms. Contaminated water on aerosolization may result in the formation and spread of harmful bioaerosols in indoor and outdoor areas . Airborne transmission of infective disease inside a building depends upon occupant density e.g. higher the density higher the risk. Presence of vectors such as pets, insects, may be responsible for the transmission of non-viable aerosols causing allergy . Possible transmission and control strategies of airborne diseases are described in Fig. 4.

Fig. 4

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People With Weak Immune System

A weak immune system makes harder for your body to fight disease and as a result they are more likely to get food poisoning and have serious health effects. People suffering from diseases such as diabetes, high blood pressure, kidney or liver disease have a low immunity level and they are not in the condition to fight germs and sicknesses. This is the reason why they are at a higher risk of suffering from food poisoning. These people are at a higher risk of suffering from serious complications, including death.

Chemical Contamination Of Food

Chemical contamination happens when a food becomes contaminated by some kind of chemical substance. Chemicals are used frequently in the kitchen for cleaning and disinfection, so its unsurprising that they can contaminate food. Contamination may occur from preparing food on a surface that still has chemical residue on it or if someone sprays cleaning chemicals close to uncovered food.

Additionally, food can become contaminated from chemicals before it even reaches the kitchen. For example, fertilisers and pesticides may have been sprayed near food when it was growing.

Anybody who prepares and handles food must make sure that the food they serve is free from chemical contamination. To ensure this, they should:

  • Always store chemicals in a separate area to food.
  • Follow the manufacturers instructions when using chemicals.
  • Keep food covered when cleaning.
  • Use approved suppliers who can guarantee the safety of the food they provide.

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Dusts Fumes And Smoke

Other workplace processes can generate tiny solid particles which are light enough to float in the air, and these particles are referred to as dusts, fumes and smoke. Dusts are solid particles often generated by some mechanical or abrasive activity. They are usually heavy enough to settle slowly to the ground. Fumes are very tiny solid particles which can remain airborne, and are formed when a heated metal has evaporated in the air and then condensed back to a solid form. Fumes can occur in welding operations. Smoke is carbon or soot from burning. Smoke particles can settle or remain airborne depending on their size.

Types Of Food Contamination: Learn How Food Contamination Occurs

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If you are going to work in the food industry, food contamination is something you should have very good knowledge over. The safety of your foods consumer will be at your hand. And since everyone eats food, food contamination can be a serious issue for anyone!Now, the questions you need to ask as a beginner are how does food contamination occur? What are the types of food contamination? Does it happen often?To satisfy your quest, we have pinned down all the basic things you should know about food contamination. After going through this piece of writing, you wont become an expert, but have a moderate idea over food contamination and its consequences.So, lets dive down!

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How Can Chemicals Enter My Body

In order for a chemical to harm a person’s health, it must first come into contact or enter the body, and it must have some biological effect on the body. There are four major routes by which a chemical may enter the body:

  • Inhalation
  • Swallowing
  • Injection

Breathing of contaminated air is the most common way that workplace chemicals enter the body. Some chemicals, when contacted, can pass through the skin into the blood stream. The eyes may also be a route of entry. Usually, however, only very small quantities of chemicals in the workplace enter the body through the eyes. Workplace chemicals may be swallowed accidentally if food, hands, or cigarettes are contaminated. For this reason, workers should not drink, eat, or smoke in areas where they may be exposed to chemicals.

Injection is the fourth way chemicals may enter the body. While uncommon in most workplaces, it can occur when a sharp object punctures the skin and injects a chemical directly into the bloodstream.

Regardless of the way the chemical gets into the body, once it is in the body it is distributed in the body by the blood stream. In this way, the chemical may harm organs which are far away from the original point of entry as well as where they entered the body.

What Are The Different Types Of Food Contamination

There are three different types of food contamination – chemical, physical and biological.

All foods are at risk of becoming contaminated, which increases the chance of the food making someone sick. Its important to know how food can become contaminated so that you can protect against it.

Chemical contamination;refers to food that has been;contaminated by some type of chemical substance. Because chemicals can be very useful when cleaning in the kitchen, they can easily contaminate food. Chemicals must be properly labelled and stored separately for foodstuff to minimise the risk of contamination.

There are also chemicals that occur naturally in foods, like toxins in some fish, and in some cases, minimal chemical contamination might not actually lead to illness. However, the food handler must always be aware of the presence of chemicals in food and take all reasonable precautions to make sure that chemical contamination doesnt happen.

Biological contamination;refers to food thats contaminated by substances produced by living creatures such as humans, rodents, pests or microorganisms. This includes bacterial contamination, viral contamination or parasite contamination thats transferred through saliva, pest droppings, blood or faecal matter. Bacterial contamination is thought to be the most common cause of food poisoning worldwide, and the best way to protect against it occurring is by maintaining the best food safety practices.

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Food Intoxication And Food Infection

Have you ever had the 24-hour flu? Probably not, because theres no such thing. Many people who think they have the 24-hour flu have had a foodborne illness caused by some type of pathogen. A rapid reaction is normally caused by a food intoxication. A slower reaction is normally caused by a food infection. Heres how to tell the difference between the two:

  • Food intoxication occurs when bacteria grow in food and produce a waste product called a toxin .; When the food is eaten, the toxins are immediately introduced into the body, causing a rapid reaction.; Example:; Staphylococcus
  • Food infection occurs when food contains living pathogens that grow in the human intestinal tract after the food is eaten.; Because the bacteria continue to multiply in the body and cause infection, the reaction will be slower.; Example: Salmonella

Should You Be Worried

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As mentioned above, drinking water can be affected by many different factors. Most contamination can be removed or limited with a water purification solution. And if a substance is considered to pose a health risk, it is usually regulated by the authorities, who impose limits on how much of the contaminant may be found in the water for it to be considered safe to drink. Your local water authority can provide you with further information about water regulation in your area.

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