Food Preservatives

Sodium Benzoate is a common food preservative used in food products such as jams and jellies, soft drinks, pickles, condiments etc and in tinned products in the market. This experiment aimed to determine whether benzoic acid is formed from it’s superior soluble form sodium benzoate in stomach acid, which is simulated by HCl (pH=2). It has been seen that at a low optimum pH, i.e. in the presence of sufficient hydrochloric acid, sufficient benzoic acid is yielded. The percentage yield is determined from the calculations of the theoretical (stoichiometric) calculations and the actual

1. The experiment began with a clear solution of sodium benzoate, once 3 M of HCl were added to achieve a pH of 2, the clear solution became a precipitate. Sodium benzoate was water soluble, but the yield of benzoic acid became quite insoluble in water.

1.6 & 5.1 Provide examples of the different methods you use to store food &

Contamination may happen at any stage of food production, from seed and soil to packaging and cooking. Meat may be contaminated by inadequate storage or poor hygiene. Cross contamination can happen through raw meat. Pathogens can still be present in food due to food that is insufficiently warm. Food should only be reheated once, and drinking water could also be contaminated, although there are hygiene controls to prevent

Jars of pickles, jellies, fruit, peas, beans, corn, were canned to sell and for personal consumption. Nothing went to waste. If it wasn't preserved, fruit was stored in bins in a root cellar dug into the ground. The cellar was about three feet deep and enclosed by cement. The coolness of the enclosure and the surrounding earth were very effective in preserving food over many months. Not only was preserving food economical, it also provided for a more varied diet over the winter months in a time when the selection at the local grocery store

In addition, according to department of health at state government of Victoria, temperature danger zone is between 5C and 60C, bacteria will grow at the food quickly. Cooking food or thoroughly cooked food to over 75C kills most of the bacteria.

Many foods were only accessible during certain times of the year. Without refrigeration and the many technological advances we have today, food preservation was inconvenient. This increased the demand for food preservation during the 1700s. “Most homes needed a cool place to store root vegetables, fruits, pickles, dairy products, and barrels of salted meat, cider, beer, or wine, and, in cold seasons, fresh meat for short periods of time. House cellars or smaller underground spaces served these needs.

Antimicrobial food packaging are a potential way to conserve food by using antimicrobial substances – such as essential oils - inside or outside the package. The most common

42. An outbreak of typhoid fever, caused by the Salmonella Typhi Bacterium, is most likely to occur after?

Restaurants in particular, have to be very cautious to prevent their customers from being served contaminated food. Not properly handling meat or cross contaminating can cause food-borne illnesses or even death. A story reported in 2013 described an incident where 80 people became sick from improperly handled food (FoxNews, 2013). Their report demonstrates how easy it can be for people to get sick if food is not handled correctly. One of the most important parts to handling meat, is figuring out the safest way to thaw meat in order to prevent bacteria and disease from growing before cooking it. Although the bacteria is killed when heated above a certain temperature, it can still cause harm if not properly handled. This experiment will test the different possible methods of thawing meat to prevent disease and bacteria from spreading before

Have you ever wondered how big of a problem foodborne illness is on the federal level in the United States? Foodborne illness is a big problem on the public health. Foodborne illnesses are infections caused by beverages or foods that contain harmful bacteria, viruses, parasites and/or chemicals. Foods can also be contaminated with bacteria during the food preparation you do at home or the preparation done at a restaurant. If the food cooks or food preparers do not carefully wash their hands, kitchen tools, cutting boards, and other kitchen surfaces that come into contact with raw foods, cross contamination can occur which is the spread of bacteria from contaminated foods to uncontaminated foods. If hot food is not kept hot enough or cold food is not kept cold enough, bacteria can multiply. Bacteria multiplies very quickly when the temperature of food is between 40 and 140 degrees. Cold food should be kept below 40 degrees and hot food should be kept above 140 degrees. Bacteria multiplies slower when food is refrigerated. Freezing food can also slow or even stop the spread of bacteria. But once food is brought to room temperature once again the bacteria that is refrigerated or frozen becomes active once again. Thoroughly cooking foods can also kill bacterias that cause foodborne illnesses. The common symptoms of foodborne illnesses are vomiting, diarrhea, fever, abdominal pain, and/or the chills. The Federal government has estimated that there is about 48 million cases of

Food is an essential constituent in human life. Nevertheless, some foods can be detrimental to a person’s organism by causing life-threatening diseases. For that reason, food safety comes into play. Food safety is a scientific discipline describing handling,

at its best state for a long time. Food preservation has been around for so

Food preservatives are described as natural means or man-made chemicals that are used in foods to prevent them from spoiling. A subgroup of preservatives are food additives, which differ from preservatives in the way that additives are not only used to lengthen the life of food, but also to improve taste and appearance. The ultimate goal of preservatives and additives are to improve the quality and lifespan of food by slowing down the decomposition process using chemicals or natural methods, such as salt and dehydration.

Food gets contaminated after a certain period of time because bacteria start growing in it. Food contains certain preservatives like salts and other chemicals. However, they do not last long and so if food is not