ABSTRACT The study aims to produce biodegradable plastic using cassava starch as its main component. Cassava starch was mixed with water‚ epoxydized soya bean oil (ESBO)‚ glycerol‚ and polyvinyl alcohol (PVA). The mixture was then compressed and tested. Three preparations were made from the mixture. The first preparation contained 50 grams starch‚ 50 grams water‚ 50 grams PVA‚ 2.5 grams ESBO‚ and 2.5 grams glycerol. The second preparation contained 65 grams starch‚ 65 grams water‚ 50 grams PVA‚ 2
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Defining the Insect’s mouthparts‚ its modification and its association in aiding pest control management Nina Arra DJ. Rivera Biology Student‚ Department of Biology‚ College of Science‚ Polytechnic University of the Philippines ABSTRACT Classifications of insect mouthparts are based on the manner insects feed on plants. Insect mouthparts are of two main types: chewing and piercing-sucking. Some insects have modifications of these two basic types. A study in the modifications of mouthparts
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Ingredients: ½ cup Aloe Vera 2 teaspoons of Glycerin 1 cup Ethyl Alcohol Malunggay Leaves Sampaguita Flowers Materials: Mortar and Pessel Scraper Bowl Measuring Cups Measuring Spoons Empty Hand Sanitizing Bottle Plastic Container Procedure: Prepare the ingredients and materials needed. Scrape the gel of the aloe vera and put ut in a bowl. After scraping the gel‚ put it in a plastic container and add 1 cup of ethyl alcohol and 2 tsps. of glycerin. Next‚ use the mortar and pessel
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Introduction: The purpose of this experiment is to derive Isopentyl acetate (banana oil) from the reaction of an alcohol and a carboxylic acid in a process called Fischer esterification (Fischer-Speier esterification). The name‚ banana oil‚ is due to banana odour released by formation of Isopentyl acetate. The alcohol and the carboxylic acid used in this experiment are Isopentyl alcohol and Glacial Acetic Acid. Both the overall reaction of Fischer esterification and the specific Fischer esterification
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Electrophilic Aromatic Substitution Objective The objective of this experiment was to illustrate electrophilic aromatic substitution by synthesizing p-nitroanilide (as well as ortho) from acetanilide by nitration. The para form was separated from the ortho form based on solubility properties using recrystallization techniques. Synthetic equations: Physical Properties & Hazards of Reagents/Products: (all taken from Sigma-Aldrich website) Acetanilide MM = 135.16 g/mol Melting point =
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finally subjected to two different conditions which were addition of organic acids and nitrogen supplementation. The results showed that high quality mead is produced when there is correlation between nitrogen availability and the levels of ethyl and acetate esters (Mendes-Ferreira et al.‚ 2010). In a recent study‚ honey was used as a functional substrate among other substrates such as soybean hydrolyzed extract and colostrum in producing probiotic beverages using kefir grains as starter culture
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Preparation of Synthetic Banana Oil Eric Nelson Chem. 253-1: Deepali Rathore Lab 1: Preparation of Synthetic Banana Oil 9-24-10 Purpose To create Isopentyl acetate with no more than 10% isopentyl alcohol and no more than 2% acidic acid in its composition. Theory Esters are a chemical functional group that usually forms by loosing a hydroxyl group and having it replaced with an alkoxy group with the loss of hydrogen. Esters are most commonly produced by taking a carboxylic acid‚ and
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amounts of starting material in the product‚ which is okay in small amounts‚ but we need to test the product to see if it is within their acceptable ranges to be used. We will be synthesizing synthetic banana oil‚ or otherwise known as isopentyl acetate. We will synthesize thie oil by combining isopentyl alcohol with acetic acid and sulfuric acid‚ and heating under reflux for one hour. After this time‚ we will separate and purify our product via washing with sodium bicarbonate (that separates compounds
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Experiment 2: Synthesis of Isoamyl Acetate (Banana Flavor) Paul Symon C. Manuel*‚ Katherine Merene‚ Charlene Mondelo‚ and Pamela Mallari Department of Chemistry‚ University of Santo Tomas‚ Manila‚ Philippines Abstract: The purpose of this experiment was to synthesize isoamyl acetate via an esterification reaction between acetic acid and isoamyl alcohol‚ using concentrated sulfuric acid as a catalyst. The product was washed with sodium hydrogen carbonate‚ as well as with water‚ and then dried
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dried using anhydrous granular sodium sulfate. After dried‚ the sample was placed in a distillation apparatus and heated. This resulted in 1.8g of pure isopentyl acetate‚ a 44% yield. Introduction Isopentyl acetate is yielded by combining isopentyl alcohol with acetic acid using sulfuric acid as a catalyst. The product is isopentyl acetate also known as banana oil. Banana oil is an ester. Esters can be found in fruits and flowers’ scents. When water is added to an ester‚ the process can be reversed
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