Background of the Study Starch is a linear polymer (polysaccaride) made up of repeating glucose groups linked by glucosidic linkages in the 1-4 carbon positions. The length of the starch chains will vary with plant source but in general the average length is between 500 and 2 000 glucose units. There are two major molecules in starch - amylose and amylopectin. The alpha linkage of amylose starch allows it to be flexible and digestible. Starch-based biodegradable plastics may have starch contents ranging
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plastic using cassava starch as its main component. Cassava starch was mixed with water‚ cornstarch and cooking oil INTRODUCTION There is an increasing demand for plastic‚ from the highly technological fields of electronics‚ fiber optics‚ and pharmaceuticals to the basic necessities such as sandwich wrappers and garbage bags. This high demand for plastics‚ however‚ has been a major contributor to the world’s present garbage problems. Because plastics are made of polymers‚ starch is a very favorable
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indicated by the Benedict’s test. (6 points) corn syrup (1 point) table sugar (1 point) unknown 1 (1 point) unknown 2 (1 point) unknown 3 (1 point) unknown 4 (1 point) List whether each of the following substances was positive or negative for starch‚ as indicated by using iodine. (7 points) onion juice (1 point) water (1 point) cornstarch (1 point) unknown 1 (1 point) unknown 2 (1 point) unknown 3 (1 point) unknown 4 (1 point) The Sudan III test has been performed for you. Please see
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Essay Questions Exam 3 Chapter 40 a. Describe a key function of each of the four types of tissues found in animals. 1. Epithelial tissue (squamous‚ columnar‚ cuboidal) makes up the lining and coverings. This type of tissue is found in the skin (epidermis and dermis)‚ surrounding the organs of the body‚ and outer layer of capillaries (diffusion). 2. Connective tissue (loose‚ adipose‚ blood‚ fibrous‚ bone) holds organs in place and attaches epithelial tissue to other underlying tissues. A collagenous
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business of the corn starch manufacturing happened and to his other later businesses. I write down my plans and even my tasks to be done in every week so that I can clearly see my goal and be directed in to it. I will make my short term and long term plans so that I can keep track my actions if it’s leading to my goal. Moderate Risk-Taker When he established the Cebu Pacific‚ he doesn’t surely know whether it would be a success. When he spotted an opportunity in corn starch business‚ he promptly
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that contain gums which hold teeth‚ the roof of the mouth is the palate and the tongue occupies the floor of the mouth. The salivary glands have ducts that open in the mouth. Function: The mouth is where the first step of digestion begins. Known as mechanical digestion‚ this involves chewing with your teeth to break the food into smaller pieces. The tongue moves the food around to assist chewing and together with saliva‚ the food is lubricated for ease of swallowing. Salivary glands Structure:
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determine the presence of macromolecules. In doing the lab‚ one was able to determine the characteristics of the given solutions‚ containing different macromolecules‚ whilst doing the multiple tests. The tests performed were‚ iodine testing for starch and glycogen‚ Benedict’s test for reducing sugars‚ and the Biuret’s test for protein. Depending on the test performed‚ certain results acquired‚ clearly identified the macromolecules present in each solution. With the aid of the results from the lab
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Materials: Dropper bottle of water Compound microscope Dissecting needle Carmine powder Slide and coverslip 3 test tubes Transfer pipets 2 400 ml beaker 30 cm moist dialysis tubing 500ml beaker Hot plate Benedicts reagent I2KI solution starch solution Wax pencil 30% glucose solution String or rubber band Test tube rack Slides and cover plates 4. Methods and Procedures: Experiment 1: Prepare a slide of dry carmine and water and cover slip Put under the microscope‚ examine
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cake ‚ swiss roll ‚ biscuits and so on. We choose chocolate layer cake as our main product that we want to introduce. 1.1. Raw materials Sugar ‚ wheat flour ‚ eggs ‚ vegetable fat (palm oil) ‚ vegetable oil (palm oil) ‚ refined glycerine ‚ corn starch ‚ cocoa powder ‚ glucose syrup‚ emulsifier (distilled monoglyceride E471 ‚ polyglycerol ester E475) ‚ sorbitol ‚ salt ‚ artificial flavor (chocolate ‚ vanillin) ‚ citric acid ‚ sodium bicarbonate ‚ potassium sorbate ‚ calcium propionate ‚ baking powder
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remained on the white tile. It was opaque. Presence of reducing sugar ‚ absence of starch Solution B Benedicts test: Blue colour remained the same. Abundant amount of blue solutions remained the same and it was opaque. Iodine test: Yellowish-brown colour turned to blue-black. Moderate amount of blue-black precipitate was left on the white tile. It was opaque. Absence of reducing sugar ‚ presence of starch Table 2 : Tube Contents Temp (℃) Benedict’s Test – Colour Observation
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