Contents No Items Pages 1 Contents 1 2 Introduction 2 3 Toxicants formed during food processing 3~9 3.1 Acrylamide 3 3.2 Polycyclic Aromatic Hydrocarbons 4~5 3.3 Nitrosamine 5~6 3.4 Benzene 7 3.5 Chorinated compounds 8 3.6 Amino acid Pyrolysates 9 4 Conclusion 10 5 References 11 Introduction For most foods, the faster it spoils, the healthier it is. However, in the globalisation and rapid invention of technologies plus the shifting eating habit of mankind, we need our food to last for
Environmental Protection Agency, 18 Oct. 2013. Web. 24 Nov. 2013. "Phosphorus." EPA. Environmental Protection Agency, 18 Oct. 2013. Web. 25 Nov. 2013. "Polychlorinated Biphenyl." Wikipedia. Wikimedia Foundation, 19 Nov. 2013. Web. 25 Nov. 2013. "Polycyclic Aromatic Hydrocarbon." Wikipedia. Wikimedia Foundation, 11 Dec. 2013. Web. 23 Nov. 2013. "Solar & Wind Energy Calculations: The (very) Basics." Solar-estimate.org. Solar-Estimate, 2013. Web. 25 Nov. 2013. "The Toll from Coal." Catf.us. Clean Air Task Force
synthetic appeal is the norcaradiene core. This six membered diene ring fused to a fully substituted cyclopropane is a puzzle for synthetic chemists. Structures of this type often rearrange to seven-membered cycloheptatriene rings, but in this case, the polycyclic framework around it stabilizes it. Studies have shown that due to the geometrical constrains, the norcaradiene is stable at room temperature,11 which means that the electrocyclic ring-opening of the norcaradiene core would result in two bridgehead
Intro: Organic chemistry is the scientific study of the structure of organic compounds. This includes the properties of the compounds and what occurs during chemical reactions. The structure of these compounds is found through analysing the results of Ultra violet spectroscopy. There have been many famous chemists over time who have made some ground breaking discoveries. None more so than R.B Woodward who almost single handily revolutionised the field of organic chemistry, winning a Nobel Prize in
[Topic sentence for first body paragraph]. The first event that led to an increase vegetarianism in America was Upton Sinclair’s The Jungle in 1906. Upton Sinclair‘s The Jungle, was about Chicago's filthy, unsanitary meat-packing facilities. The novel resulted in a few percent of Americans no longer wanting to eat meat for fear of unsanitariness, and thus resulted in the first noticeably increase in vegetarians in America, even though the government passed the Meat Inspection Act and the Pure Food
marinating chicken prior to grilling reduce the amount of carcinogens? Carcinogens are basically substances that are capable of causing cancer. Two examples of carcinogens are heterocyclic amines (HCA’s) and polycyclic aromatic hydrocarbons (PAH’s). Heterocyclic amines and polycyclic aromatic hydrocarbons are simply chemicals formed when meat is cooked at very high temperatures. I think that if I marinate the chicken breast before grilling it, then it will reduce the amount of carcinogens present in the
INTRODUCTION Petroleum hydrocarbons from oil spills threaten marine life worldwide. Animals become coated in the oil and ingest the contaminants while trying to clean themselves. The toxic effects of petroleum often result in death for much of the surrounding life. Bioremediation offers an efficient solution for cleaning up oil spills. The pollutants are biologically degraded by complete mineralization of the organic contaminants, turning the toxic waste into harmless products such as carbon dioxide
peak corresponds to the frequency of vibration of one particular functional group present in the molecule. Thus, a peak in the spectrum implies a functional group and the number of peaks can imply how many functional groups are there (except for aromatics that produces a series of peaks called overtones). Since one particular functional group has a unique frequency of vibration, infrared spectroscopy is used in identifying the different functional groups present in the molecule. Thus, information
Agriculture is one of the biggest sectors of Pakistan. This sector is considered to be the center of development and economic growth of in Pakistan. Being a dominant sector, its GDP contribution is about 21.4%. In this sector 45% of the country’s force is employed (1). The total area coverage by the country is approximately 79.60 million hectares, about 37.10% area is cultivated, 11.5% area is cultural waste and 31% area is non-arable. The horticulture sub sector is one of the most important sectors
data by Nigerian government and Shell Petroleum Development Company (Nigeria) Lt... ... middle of paper ... ...river and lake pollution and could not continue fishing activity. Ogoniland people were always exposed to air and water-containing hydrocarbon petroleum in it. Research showed span average life in Nigeria less than 50 year. The most disturbing thing is Ogoni community drinking water come from resources that was marred with chemicals hazardous exceed 900 time guideline by World Health Organization
known as coal tar creosotes and coal tar pitch respectively. The creosotes consist of light oils (2-8%), middle oils (8-10%), heavy oils (8-10%) and anthracene oils (16-20%) (Gosselin et al. 1984). Pitch is mostly made up of highly condensed aromatic hydrocarbons (Kershaw 1993). Medical pix lithantracis is a mixture of pitch (66.67%) and tar oils (33.33%) (Roelofzen 2007). Physical and chemical characteristics Crude coal tar is a black and viscous liquid. It has obnoxious naphthalene like odor and a
There is an unprecedented amount of Type 2 Diabetes today. More specifically, 1 in 5 American children are considered obese. We are also starting to see hypertension in young children. Of the 40% of people today who are obese, half of them are taking some form of prescription drug. Heart disease and cancer combined kill 1 million people per year. 1 out of 3 people will develop diabetes in their lifetime. Due to these dietary issues, this generation of children might be the first to not outlive their
In Frederica P. Perera’s article ‘Multiple Threats to Child Health from Fossil Fuel Combustion: Impacts of Air Pollution and Climate Change’ she uses factual data to discuss the effects air pollution brings to adolescents. The importance of this rising issue has allowed her to bring validity to the argument. Despite this, her knowledge and ability to document her evidence, has caused her to stray away from her own thoughts which was not beneficial in connecting with her readers. Perrera discusses
purpose of smoking meats are adding brown colour to it, enhance its flavour and prevent the growth of microorganisms. The chemicals that formed during smoking or cooking the meat using high temperature are heterocyclic amine (HCA) and polycyclic aromatic hydrocarbon (PAH) (Butler 2003). These two chemicals are mutagenic and can cause changes in DNA which lead to cancer. HCA is formed during the reaction between heat and amino acids and creatines (both found in meat). On the other hand, PAH is formed
agree upon. Unlike Roth, Dicky is more focused on the risk this poses to human health rather than the ecosystem. Dicky explains that there is a health risk posed to humans that consume fish that have been in contact with oil and have retained hydrocarbons from the oil. He discusses a research case by the FDA where they did an
Scientists have been trying to find out life on other planets since long. Moon was their first target that disappointed them badly. After finding no life on moon they started their journey towards the Mars. Does life exist on Mars debate is one that has gotten a lot of news and is considered very enigmatic and interesting (Smith, 2011). Researchers keep on sharing new information regarding Mars with people to equip them with the knowledge of new discoveries. The discovery of liquid on the surface
Principal Component Analysis Principal Component Analysis (PCA) is a multivariate analysis performed in purpose of reducing the dimensionality of a multivariate data set in order to recognize the shape or pattern of that data set. In other words, PCA is a powerful technique for pattern recognition that attempts to explain the variance of a large set of inter-correlated variables. It indicates the association between variables, thus, reducing the dimensionality of the data set. (Helena et al, 2000;
skin and as a lubricant. It is found in many products and has been determined safe by the cosmetic industry. A major concern brought about by The Environment Working Group is, “that petrolatum has a very high risk of contamination from polycyclic aromatic hydrocarbons (PAHs), cancer-causing chemicals found in crude oil and its by-products”(Petrolatum). The Environment Working Group rates petrolatum a four out of ten scale, which is considered a moderate hazard. For this reason many cosmetic companies
In this essay we will be looking at why the Keystone XL Pipeline should not be built. This is a hot controversial issue that has been in the news for awhile. We will discuss the pros and cons of what will happen if the United States passes legislature to allow the Keystone XL Pipeline to be built. You have to ask yourself if destroying the environment is for our children is worth it to make a few billions richer or maybe little bit cheaper gas. If you agree with building the Keystone XL Pipeline
Diana Ramos April 11th 2014 Mr. Harter 2nd Petcoke Storage In The United States Olga Bautista is a mother of two, she’s a Chicago resident and another problem has just been added to her list, one she can’t do anything about by herself. Her daughter attends elementary school along with nine-hundred other children and the school is being polluted by a dust that is full of heavy metals, petcoke. This dust is being stored only half a mile from the school and Bautista’s home. She along with Suzanna Gomez