Food poisoning and food preservation methods - class-X

Apples are wrapped with waxes after they are harvested to increase their shelf life till they reach the end consumer. The waxing process closes the pores present on the fruit preventing exchange of gases, thus reduced catabolism and senescence.

Sodium benzoate is a common chemical preservative used to inhibit the growth of mold, yeast, and bacteria in acidic foods. It is widely used in fruit-based products like fruit cocktails, juices, and jams.

Dehydration is the process of removing water from food to prevent microbial growth. Both 'drying' and 'dessication' are terms used to describe this removal of moisture.

UHT stands for Ultra High Temperature, a food processing technology that sterilizes food by heating it above 135 degrees Celsius for a few seconds.

Pasteurization is a process in which milk is heated at high temperatures (65 degree celsius approx) followed by rapid cooling to kill pathogenic bacteria.

Food preservatives are chemicals that are used to inhibit microbial growth in food. These chemicals are food additives and increase the shelf life of food. Sodium benzoate and sodium metabisulphite are the common food preservatives used in jams, jellies etc. Thus the correct answer is option D.

Commercial vinegar used for cooking and preserving pickles typically contains roughly 5 to 8 percent acetic acid by volume in an aqueous solution. Therefore, 5 to 8 is the correct range.

Pasteurization is a heat treatment process where the milk is heated at 60-70$^0$C for 15 to 30 seconds and suddenly chilled and store. This method is used to kill the bacteria in liquid and foods and inhibits their further growth. It is named for the French scientist, Louis Pasteur, who gave this preservation technique in the 1860s.

Pasteurization is the preservation technique of milk. It is used 

1. To increase milk safety for the consumer by destroying disease-causing microorganisms (pathogens) that may be present in milk.
2. To increase keeping the quality of milk products by destroying spoilage microorganisms and enzymes that contribute to the reduced quality and shelf life of milk.

Pasteurization is a heat treatment process where the milk is heated at 70$^0$C for 15 to 30 seconds and suddenly chilled and store. This method is used to kill the bacteria in liquid and foods and inhibits their further growth. It is named for the French scientist, Louis Pasteur, who gave this preservation technique in the 1860s. Thus, the correct answer is option C. 

When the food is not edible to humans or its quality of edibility becomes reduced is called as food spoilage and the food which get easily spoiled called as perishable food. Various external factors are responsible for the spoilage of food.

• Pasteurization is a process of heating the milk enough to kill the most of the bacteria which can spoil the milk. This prevents milk spoiling for a longer time. 

• Pasteurization is a process of heating food, which is usually a liquid, to a specific temperature for a predefined length of time and then immediately cooling it after it is removed from the heat. 
• Raw milk is milk from cows, sheep, or goats that has not been pasteurized to kill harmful bacteria. 
• This raw, unpasteurized milk can carry dangerous bacteria such as Salmonella, E. coli, and Listeria, which are responsible for causing numerous foodborne illnesses.
•  Pasteurization makes sure milk is safe to drink by killing any bacteria and also helps to prolong its shelf life.
•  The process of pasteurization involves heating milk to 71.7°C for at least 15 seconds. Once the milk has been heated, it is then cooled very quickly to less than 3°C. 

Jams, jellies and squashes are preserved by sugar. Sugar reduces moisture content and inhibits the growth of bacteria.

In the High-Temperature Short-Time (HTST) pasteurization method, milk is heated to at least 71.7 degrees Celsius for 15 to 30 seconds to kill harmful bacteria.

Use of oil and vinegar prevents spoilage of pickles because bacteria cannot live in such an environment.

Jams, jellies, squashes are preserved by sugar. Sugar reduces the moisture content which inhibits the growth of bacteria which spoils food.

Pasteurized milk can be consumed without boiling as it free from harmful microbes. The process was discovered by Louis Pasteur.

Vegetables, fruits, fish and meat are often preserved by this method. It prevents the growth of bacteria.

• Aspergillus causes food poisoning.
• KMS(Potassium Mera Bisulphate) is a chemical preservative.
• Acetic acid in the form of vinegar is used in the manufacture of several pickled products.

There are many chemical preservatives used in food industry. Sodium benzoate is generally used is ketchups, pickles, jams etc.

Citric acid and phosphoric acid are added to carbonated beverages and fruit drinks for both flavoring and preservation. Nitric acid and Oxalic acid are much acidic in nature which can cause harm to the digestion system.

Salts and edible oils are the common chemicals generally used to check the growth of microorganisms. Therefore they are called preservatives.

Pasteurized milk can be consumed without boiling as it is free from harmful microbes. The milk is heated to about $700C$ for $15$ to $30$ seconds and then suddenly chilled and stored. By doing so, it prevents the growth of microbes. This process was discovered by Louis Pasteur. So, It is called pasteurization.

Milk is pasteurized to destroy microbes, but many more heat resistant organisms are only reduced in number. Pasteurization kills the harmful microorganisms present in milk..

Salts and edible oils are the common chemicals generally used to check the growth of microorganisms. Therefore, they are called  preservatives. We add salt or acid preservatives to pickles to prevent the attack of microbes. Sodium benzoate and sodium metabisulphite are common preservatives. These are also used in the jams and squashes to check their spoilage.

The symptoms of food poisoning arise due to the presence of bacteria or other microbes in food and due to the ingestion of toxins contained in food. Some bacteria like Clostridium and Staphylococci and fungi like Aspergillus cause food poisoning.

Microbes can make the food poisonous causing serious illness and even death. So, it is very important that we preserve food to prevent it from being spoilt. Microorganisms that grow on our food sometimes produce toxic substances.

The symptoms arise due to the presence of bacteria or other microbes in good due to ingestion of toxins contained in food. Some bacteria like Clostridium and Staphylococci and fungi like Aspergillus cause food poisoning.

Symptoms of food poisoning are vomiting, nausea, severe pain in abdominal region, diarrhoea and dehydration. It may also cause weakness, fatigue and damage to the nervous system.

Food poisoning as the name suggests is a disease that results from the consumption of contaminated food. Food adulteration means the presence of unwanted materials in the food item which alters the quality of food whereas rancidity means degradation of oil and fats present in the food item.

Chemical preservatives like sodium benzoate or potassium sorbate are commonly used across a variety of processed foods, including jams, jellies, pickles, and ketchups, to extend shelf life.

It is very important that we preserve food to prevent it from being spoilt. Microbes can make the food poisonous causing serious illness and even death.

Sodium benzoate and sodium metabisulphite are common preservatives. These are also used in the jams and squashes to check their spoilage.

Since he ate variety of foodstuffs,the condition could be due to food poisoning.Food poisoning could be due to the consumption of food spoilt by some microorganisms. Microorganisms that grow on our food sometimes produce toxic substances.

Food must be properly stored to prevent food poisoning. Food poisoning can occur when food is left unrefrigerated for longer period of time. Mishandling of food can also cause food poisoning.

Salmonellosis is an infection caused by Salmonella bacteria. Symptoms include diarrhoea, stomach cramps and sometimes vomiting and fever. It is transmitted by the contaminated food and thus called as foodborne diseases. 

Food spoilage is the decrease in the original nutritional value, texture and flavor of the food. Such food becomes harmful and unsuitable for human consumption. This can happen due to bacterial or fungal action if food is left open for a long time. In uncooked food, autolysis may take place in which food is decomposed by self-enzymes. Food spoilage can be prevented by adding preservatives. Thus, the correct answer is option B.

the correct answer is 'Clostridium and E.coli'

frozen raw chicken contains the most bacteria even though it is frozen the bacteria does not die their growth is stopped but the bacteria is still present where as in the cooked chicken it is killed and in tinned cream and mayonnaise they are processed.

even though the food poisoning bacteria grow at the temperature of 37 degree centigrade they start multiplying readily at approximate temperature between 5 to 63 degree centigrade.

The food containing food poisoning bacteria does not change colour, taste, and smell of the food hence it cannot be recognized by the senses and the food looks normal

the correct answer is 'all of the above'

The disease caused due to the presence of a large number of micro-organisms in the food or due to the presence of toxic substances in food formed by the action of microorganisms is called as food poisoning.

Storing food products at low temperature reduces the enzyme activity. Due to this the food could be stored for longer period of time and making it available throughout the year.

Pasteurization involves heating a liquid, such as milk, to a specific temperature (often around 63-65 degrees Celsius) followed by rapid cooling to destroy pathogens without significantly altering the product's quality.

Food poisoning is the infection caused by the ingestion of food contaminated with bacteria or bacterial infection. Symptoms of food poisoning begin within 1 to 2 days of eating contaminated food. The symptoms are vomiting, nausea, severe pain in the abdominal region, diarrhoea and dehydration. It may also cause weakness, fatigue and damage to the nervous system.

Food material can be preserved at high temperature, that is either by heating or boiling. Usually a process followed for cooked food and milk to prevent it from being spoilt due to microbial action

Botulism is a serious foodborne disease caused by the neurotoxin leads to the paralysis and even death, produced by the spore-forming, obligate anaerobic. These produce endospores which can be destroyed by heating at high temperatures. The neurotoxin enters the nerve cells and interferes with the release of acetylcholine. Hence, it affects the nervous system.

Lazzaro Spallanzani - One of the first to disprove spontaneous generation. An Italian scientist who proved microorganisms could be killed by boiling.

The process described, heating milk to a specific temperature and then cooling it suddenly to kill microbes while preserving quality, is the definition of pasteurization.

Pasteuriziation is the process of sterilization. In this, packaged and non-packaged milk and other liquids are heated with mild heat, that is 60$^o$C to 70$^o$C for short duration in order to eliminate pathogens and extend shelf-life. The process was first developed by Louis Pasteur in 1864.

Food poisoning is caused by Clostridium botulinum. Botulism is a life-threatening bacterial disorder that is caused by Clostridium botulinum. It grows on food and produces neurotoxin, botulinum toxin that causes paralysis. 

Pasteurization is the process of sterilization. In this, packaged and non-packaged food items are heated at 62$^o$C for 30 minutes and then cooled. This is done in order to eliminate pathogens and extend the shelf-life of food. This process frees food materials from vegetative forms of all pathogenic bacteria. This method was introduced by Louis Pasteur.

Pasteuriziation is the process of sterilization. In this, packaged and non-packaged food stuffs are heated with mild heat, that is 60$^o$C to 70$^o$C for short duration in order to eliminate pathogens and extend shelf-life. This process frees food stuffs of vegetative forms of all pathogenic bacteria. The process was first developed by Louis Pasteur in 1864.

Sterilization by autoclaving is carried out to kill bacteria and other pathogens present in the food, equipment, and materials. In this, a pressurized steam is applied with the heat of 121$^0$C for around 15–20 minutes to kill bacteria, spores, and other pathogens.

The 'batch' or 'vat' method of pasteurization involves heating milk to 62 degrees Celsius (or 145 degrees Fahrenheit) for 30 minutes.

Steaming is a moist-heat cooking method that can help sterilize food surfaces and contribute to preservation by killing microorganisms, thereby extending the shelf life of the food.

High-temperature processing is primarily used to kill harmful bacteria and pathogens, which significantly reduces the risk of food poisoning.

Pasteurization is a thermal process that uses heat to reduce the number of viable pathogens in food products like milk.

The traditional vat pasteurization method involves heating milk to approximately 60 to 63 degrees Celsius for 30 minutes.

The phosphatase test is used to verify the effectiveness of pasteurization. Alkaline phosphatase is an enzyme naturally present in raw milk that is destroyed at the same temperatures required to kill pathogens.

UHT (Ultra High Temperature) treatment involves heating milk to very high temperatures (135-150 degrees Celsius) for a few seconds, which allows it to be stored at room temperature for several weeks or months.

Food additives include a wide range of substances added to food to maintain or improve safety, freshness, taste, texture, or appearance, such as preservatives, sweeteners, and stabilizers.

Pasteurized milk is not sterile and still contains some bacteria; therefore, it must be refrigerated and typically remains unspoilt for 2 to 5 days.

Various phosphate salts, including disodium, trisodium, and tetrasodium diphosphates, are used as emulsifiers and stabilizers in dairy products like butter and processed cheese.

Vinegar and lemon juice are acidic substances. Acids are characterized by having a low pH value (below 7).

Amla is a seasonal fruit, so we can preserve amla for 6 months in salt. Typical pickling agents include brine (high in salt), vinegar, alcohol, and vegetable oil are added to preserve vegetables. When making squashes, we make use of acetic acid and a lot of sugar for preservation. Air-drying is a method to preserve herbs and spices. Boric acid, benzoic acid and sodium benzoate, were once widely used as preservatives in ketchup. Thus, the correct answer is option B.

The Delaney Clause has been part of the US Food, Drug and Cosmetic laws since it was enacted by the Congress in 1958. The Delaney Clause was included in the Food Additives Amendment of 1958 and stated that no food additive (including pesticides) shall be considered safe if it is found to induce cancer when ingested by man or animal. The Food Additives Amendment of 1958 is a 1958 amendment to the Food, Drugs, and Cosmetic Act of 1938.

Generally recognized as safe (GRAS) is an American Food and Drug Administration (FDA) designation that a chemical or substance added to food is considered safe by experts and so is exempted from the usual Federal Food, Drug, and Cosmetic Act (FFDCA) food additive tolerance requirements. The concept of food additives being "generally recognized as safe" was first described in the Food Additives Amendment of 1958, and all additives introduced after this time had to be evaluated by new standards.

The Delaney Clause has been part of the US Food, Drug and Cosmetic laws since it was enacted by the Congress in 1958. It states that no cancer-causing agent, as demonstrated in humans or animals, shall be deliberately added to, or found as a contaminant in food. It was based on the hypothesis held in the 1950s that human cancers are due to environmental chemicals. 

Food additives are substances added to food to preserve flavour or enhance its taste and appearance. Some additives have been used for centuries; for example, preserving food by pickling (with vinegar), salting, as with bacon, preserving sweets or using sulfur dioxide as with wines. Additives are used to improve the keeping quality of a food by making it last longer on the shelf or in the fridge. For example, a preservative to prevent the growth of bacteria or a humectant to stop food from drying out. It also improves the taste or appearance of a food, for example by the use of flavours, thickeners and colours.

Environmental health department is the department that deals with the remedies and prevention of all the health and environmental factors affecting peoples so if you have reported to the environmental health department about the diarrhea and vomiting the evidence should be found out by them.

Moisture has an adverse effect on food storage. Increase in moisture activates the enzyme activity. It promotes the frown of fungi on food crops.

There are several factors that are responsible for spoilage of food grains. These are categorized as biotic and abiotic. Castor oil protects wheat grains from contracting fungal disease and against several pests.

Food poisoning is the condition in which there are certain substances in the food consumed that results in infection. The food contaminated with bacteria, parasites and viruses are the main sources for causing food poisoning. Food poisoning can be prevented by avoiding contaminated food or expired food product. The unpasteurized milk should not be consumed. The fruits and vegetables should be washed and then consumed. 

Food poisoning as the name suggests is a disease that results from the consumption of contaminated food. Botulism is the paralytic disease caused by consumption of improperly canned food contaminated with neurotoxins of Clostridium botulinum. Salmonella food poisoning is called as Salmonellosis. It occurs due to consumption of eggs, meat and poultry, and sometimes fruits and vegetables infected with Salmonella. Shigellosis is a type of food poisoning caused by infection with the Shigella bacterium. It is transmitted through contamination of salads, raw vegetables, milk and other dairy products, and poultry through the faecal-oral route. 

Food poisoning is the condition in which there are certain substances in the food consumed that results in infection. The food contaminated with bacteria, parasites and viruses are the main sources for causing food poisoning. When the food poisoning is caused by Shigella, the symptoms includes diarrhea, fever, intestinal cramps, etc. The antibiotics are used for treatment. The common antibiotic is ampicillin, bactrim or ceftriaxone. 

Food poisoning is the condition in which there are certain substances in the food consumed that results in infection. The food contaminated with bacteria, parasites and viruses are the main sources for causing food poisoning. The symptoms are vomiting, nausea, severe pain in the abdominal region, diarrhoea and dehydration, weakness, fatigue and damage to the nervous system. The symptoms can be treated with antibiotics. Ciprofloxacin, Rifaximin, Bactrim and loperamide are the common antibiotics. It is necessary to increase the fluid intake. Electrolytes solution is orally fed which helps in rehydration. 

Ethylene is a plant hormone. It is also called as ripening hormone as it is responsible for ripening of fruits. Fruit ripening is accompanied by increase rate of respiration. Due to increased respiration, complex carbohydrates are broken down into simpler sugars and cell wall becomes soft. Hence, apples are generally wrapped in waxed paper to slow down the ripening process. Wrapped apples have low respiration rate and prevent ethylene formation. 

Carbonmethylchitosan is the wax-like structure present on the apples like a coating structure. This wax coating is very important in apples because this coating maintains the freshness of apple for a long time is near about 6 to 8 months. This type of chitosan is made by treating the chitin shells and shrimps of other crustaceans with an alkaline substance like sodium hydroxide.
So, the correct option is '6 months'.