David Grigoryan Chef Geoffrey Zakaryan Chef Zakaryan was born in Worcester‚ Mass.. in 1959. He was from very poor ‚ his father was a musician Groqing up he was not thinking about cooking at all. But one day he went to Monaco [Franc] and feel I love whit it .He stayed there for a year dropped school and after that one year when he comeback he said his parents that he want to be a chef . First think that he did after talking whit his parent was buying a ticket and going back to Franc
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Vitamin A Retinoic acid‚ or Vitamin A‚ is an essential human nutrient referring to a family of similarly shaped molecules called the retinoids. Its discovery dates back to research done in 1906‚ which indicated that factors other than carbohydrates‚ proteins‚ and fats were necessary to keep cattle healthy. Vitamin A was independently discovered by Elmer McCollum at the University of Wisconsin-Madison‚ and Lafayette Mendel and Thomas Osborne at Yale University. It was named due to the fact that
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Mariam Haider Micronutrients Vitamins Written Task Design Brief; Foods are not ‘pure’ substances. Although referred to as protein foods‚ or carbohydrate foods‚ this only recognized the food to be high in a particular nutrient. In fact‚ foods are mixtures of different nutrients and other chemical substances such as toxins‚ pigments and additives. Protein‚ carbohydrates and fat are regarded as macronutrients due to the size of their molecules. These nutrients are needed in large quantities
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Laboratory exercise 3 : Quantitative analysis of vitamin C contained in a fruit juice Aim: To investigate the amount of vitamin C found in all kinds of fruit juice Introduction : Vitamin C is an antioxidant‚ along with vitamin E‚ beta-carotene‚ and many other plant-based nutrients. Antioxidants block some of the damage caused by free radicals‚ substances that damage DNA. The build-up of free radicals over time may contribute to the aging process and the development of health conditions such as
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Volumetric Analysis of Vitamin C by Titration The objective of this experiment is to use a redox reaction titration to accurately determine the amount of vitamin C in a sample of lemon juice‚ orange juice‚ or grapefruit juice. Chemistry of Vitamin C The chemical name for vitamin C is L-ascorbic acid. Its molecular formula is C6H8O6; its molar mass is 176.12 g/mole. Ascorbic acid is found throughout the plant and animal kingdoms‚ occurring in citrus fruits‚ hip berries (such as rose
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vitamin C INTRODUCTION Vitamin C is a product that is usually found in many foods and produced by an abundance of chemical companies as dietary supplements. This vitamin is essential to the scurvy patients and used abundantly in cosmetic company due to its antioxidant properties. In the terms of its production‚ the fact that vitamin C has two totally and distinctly separate sides is still unknown to many people even doctors. The two sides consist of "L"-Ascorbic Acid‚ which is the (-) side‚ and
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potential of vitamin C to prevent and cure diseases such as cancer‚ flu and cold by using high amounts of vitamin C. First of all‚ Vitamin C‚ also known as ascorbic acid‚ is a molecule with complex characteristics despite its simple structure. It is an “elusive vitamin‚ very variable in concentration even in food groups (fruits and vegetables) that are recognised as good sources of the vitamin‚ very soluble in water and very sensitive to alkali‚ oxidation and heat” (Nobile & Woodhill‚ Vitamin C : the Mysterious
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Laboratory Report: Experiment 3 Analysis of commercial vitamin C tablets Name: Cheung Chun Hin‚ Harry Class: 6L (12) Date: 14-10-2009 Objective: To determine the content of vitamin C in commercial tablets (redox titration and back titration) Principle of method: Vitamin C‚ which is ascorbic acid‚ reacts with iodine rapidly in an acidic medium. C6H8O6 (aq) + I2 (aq) C6H6O6 (aq) + 2H+(aq) + 2I- (aq) Since iodine dissolves slightly in water‚ ascorbic acid cannot be titrated
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INTRO TO COOKING METHOD COOK – to heat food in order to change flavour‚ texture‚ appearance & chemical properties EFFECTS of HEAT on FOOD Carbohydrates – Starches and sugars are present in foods in many forms 2 Most Important Changes in Carbohydrates Caused by Heat are: 1. Caramelization – browning of sugars; browning of sautéed veggies and golden colour of breads are sample of Caramelization 2. Gelatinization – when starches absorb water and swell; a major principle in the thickening
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References: Bennion M. (1990). Introductory Foods (9th ed.). New York: Macmillan Publishing Company. Cook-Fuller‚ C. editor (2000). Annual editions: Nutrition 2000/2001. Dushkin/McGraw-Hill‚ Guilford‚ CT Henkel‚ J. (2000). Soy: Health claims for soy protein‚ questions about other components. FDA Consumer. Rockville‚ MD: U.S. Food and Drug Administration. Messina‚
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