Test at least 3 other substances in your house using the iodine, to determine if starch is present. Suggestions include different types of paper, bread, vegetables, etc. Describe what happened, and which substances you tested contained starch. (25 points) The iodine turned a dark blue almost purple color when it was combined with starch. I tested iodine on a piece of cut potato and once in contact it turned a dark blue-purple color therefore stating starch was present.
2.Cold beef and salad, lamb cutlet and mashed potatoes.3. Cauliflowers and white sauce instead of pudding. Saturday- 1. Stewed beef and vegetables, with remains of cold beef; mutton pudding.2.Macaroni and cheese. Sunday - 1.Vegetable-marrow soup.2.Roast quarter of lamb, mint sauce, French beans and potatoes.3.Raspberry-and-currant tart, custard pudding.
The TSI is used to observe the slant and butt of the tube as well as to identify if gas was present and if the organism produced hydrogen sulfide. The Another medium used was MAC, it is used to isolate and differentiate gram-negative organisms and it is a pink, dusty rose color. Lastly, the Citrate Slant is a green color and it was used as a differential test to examine enzymes. The media were inoculated at 37°C for 48 hours, then it was observed to determine the
The Maillard Reaction is a chemical reaction between amino acids and a reducing sugar, usually requiring heat.5 According to the article “Pancakes, Served with a Side of Science” by Aatish Bhatia it stated “When you raise the heat on your pancake mix, the amino acids that make up the proteins begin to chemically bond with carbon and oxygen atoms from sugars.”6 This shows the process of Maillard reaction, and how the sugar and the protein from the egg in the pancake is an affection. Chemical reaction has indicators to determine its identity. The indicators are evolution of gas and absorption of heat. Change of color is also a part of it. According to the article “Why Does a Color Change Indicate a Chemical Change?” by Bill Robertson, it stated, “There are a number of indicators you can use to determine whether or not a chemical reaction has occurred.”3 This shows that chemical reaction can be identified by some specific indicators.
Cornmeal allows for the crust to be extremely crispy—almost like when you eat your favorite brand of potato chips, and you think to yourself: “Wow, this is crunchy”. Once you toss the mixture a bit, add one and one-fourths cups of warm—ideally ninety degrees—water and one-fourths cup of melted butter. Be sure to
Introduction In class, a series of experiments were performed that pertained to the enzyme known as catalase, which converts hydrogen peroxide into oxygen. Due to peroxide being toxic to the tissues of both plants and animals, both possess the enzyme catalase, which breaks into two non-toxic compounds: water and oxygen gas. Enzymes are proteins that react to certain substrates to create a product, and continue doing so afterwards. Methods and Materials To test reactions between catalase and hydrogen peroxide, groups of three to four people were formed. A scale of zero to five was used to describe the reactions, with zero being no reaction at all, one being a slow reaction, and five being a very fast reaction.
Maia Naylor and Margot Cathelin 10/21/2015 Grade 9 Enzyme Lab Report Purpose: Which temperature of potato (freezing, room temperature, boiling) when added to hydrogen peroxide, would produce the most enzyme activity? Research Question: How does hydrogen peroxide break down enzymes? When hydrogen peroxide and enzymes meet, they instantly form a reaction. This reaction is the chemical distillation of enzymes. The reaction is enzymes breaking down and turning into bubbles.
Meatloaf Recipe Meatloaf is a baked or smoked ground meat dish shaped into loaf with some ingredients. Meatloaf dish is usually made from ground pork, ground beef but but meat like veal, lamb, chicken and turkey can be used. It is considered as an American dish. A plate of meatloaf with mashed potatoes is considered the ideal American style. This is a common dish in America.
A plaque assay is a modification of a bacteriophage assay and is used to estimate the titer (concentration of a solution) of a phage stock. A plaque assay contains a virus combined with bacterial cells on the surface of an agar plate. The agar plate inhibits the spread of viral progeny to neighboring bacterial cells which results in plaque formation (lysis of bacterial cell). The purpose of this lab was to perform a bacteriophage assay and to calculate the original stock titer of the phage stock using the known set of dilutions and direct plaque count. The hypothesis for this experiment was that plaques will form on all the agar plates within a range count of 30 to 300.
Now if this doesn’t get your salivary glands producing saliva maybe their well-known bourbon street pizza will do it for you. This pizza consist of Colorado green chili, rice sauce, andouille sausage, chicken, onion, green peppers, banana peppers, topped with a dollop of sour cream. Although the food is filling, it is prepared in a timely manner, and arrives at your table hot. I would rate their Food Quality a
Fermentation test is used to determine if unknown #398 uses any oxygen to ferment carbohydrates and acids. Oxidation tests were used to determine if unknown #398 metabolizes carbohydrates and acids by cellular respiration. Both tests are observed by inoculation of unknown #398 into 3 sugar broths: lactose, glucose, and mannitol and 1 citrate (Citric acid) slant. Fifth test, Hydrolytic and Degradative reactions is used to determine if unknown #398 contains enzyme, amylase that hydrolyzes starch after streaking on a starch plate. Next test, inoculation of a urea broth and is used to determine if unknown #398 contains urease that hydrolyzes urea.
Next we ordered our entrees. The captain chose the All- American a burger with bacon and cheddar cheese. Next I ordered the chicken tenders platter. The tenders were fried with a tempura style batter and served with fries and honey mustard dip on the side. Drizz selected the Caprese Burger, that is a 8oz beef patty seasoned with Italian herbs and spices with Fresh melted mozzarella cheese and basil piled on a toasted garlic butter roll with sun-dried tomato mayo.
Dona Maria’s original mole recipe combines chile peppers, sugar, sesame seeds, soybean oil, crackers, peanuts, salt, cocoa and other flavors into the popular pre-made mole sauce. A popular dish made using the spicy chocolate sauce is a simple chicken mole, as outlined on Herdeztraditions.com. To make chicken mole, combine 1 teaspoon ground cumin and salt with one-half teaspoon of garlic powder and white pepper in a bowl. Coat eight chicken thighs with the spices and cook in oil using a deep skillet until brown. Add 3 tablespoons of lime juice, 1 cup of Dana Maria Original Mole Sauce and 1 cup of chicken broth; cook on low heat until dissolved.
It is necessary to understand what each test reveals about the unknown. Citrate tests are performed in order to distinguish between different enteric bacteria by seeing which can use citrate as the sole carbon source. MR/VP are tests that are used to distinguish between different types of fermentation either mixed acid or butanediol and test for the production of acetoin. H2S production is used to determine whether or not the bacteria can produce hydrogen sulfide. Mannitol high salt testing is done in order to determine if the bacteria is salt tolerant and can ferment mannitol.