The winged bean (Psophocarpus tetragonolobus) is a twining‚ perennial herbaceous legume which can climb to 3-4 meters (Kantha and Erdman‚ 1985). As a leguminous plant‚ winged bean can be used in almost all parts of the plant. Fruit‚ leaves‚ flowers‚ bulbs and seed are edible and contain high protein and oil (Kotaru et al.‚ 1987; Dwiani et al.‚ 2014). The mature‚ dry seed is the most nutritious part of the winged bean. Their outstanding nutritive quality is based‚ above all‚ on their high protein
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site take part in the catalytic reaction. This happens by directly reacting with the substrate or stabilising reaction intermediates. In relation to the practical‚ amylase is an enzyme which is contained in human saliva. This enzyme is what helps starch turn into sugar called maltose. Amylase works best in neutral or slightly alkaline conditions‚ for example‚ at about pH7. The amylase stops working
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Monosaccharide‚ Disaccharide and polysaccharide. Carbohydrates have many uses such as: for energy‚ for storage of food in both plant and animal cells e.g. Starch‚ chloroplasts‚ for structure in plant cells e.g. cellulose have a structural use in plant cell walls giving it structure. Carbohydrates are sweet and soluble in water with the only exceptions of starch and cellulose. Reducing sugars react with the copper in Benedict’s reagent to form a brick-red precipitate. Non-reducing sugars however do not react
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set-up * Strainer * Container * Spoon * Mortar and Pestle * Knife and Chopping board * Red beet‚ turmeric powder‚ leftover blueberries * Baking soda * Vinegar * Corn syrup * Corn starch * Procedure Each plant was finely chopped and ground and individually boiled in water. Once the water was evidently stained with the pigment of the plant used‚ the heat source was put off and the contents of the pot were left to cool.
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fermented in the presence of yeast cells are converted to ethyl alcohol. During fermentation of starch‚ starch is first hydrolysed to maltose by the action of enzyme diastase. The enzyme diastase is obtained from germinated barley seeds. Fermentation is carried out at a temperature of 4–16 °C (40–60 °F). This is low for most
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The functions of the digestive system are: a. To ingest food b. To digest food into small nutrients so that the molecules can pass through membranes c. To absorb nutrient molecules d. To eliminate indigestible remains The following is not considered an accessory organ of the digestive system: a. Stomach Children have (__) deciduous teeth and adults have (__) permanent teeth. a. 20‚ 32 The folds in the stomach are called: a. Rugae The energy source preferred by cells is: a. Glucose
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liquid or became solid due to clot formation‚ etc. After each observation note which results indicate production of the given enzymes and which results indicate non-production of the given enzyme by placing a “+” or “-“in the appropriate squares. A. Starch Hydrolysis Note: the color of the medium immediately surrounding the colonies after addition of iodine on PDA plate. Organism Result + or - Appearance/Observations Bacillus cereus Escherichia coli B. Gelatin Hydrolysis (gelatinase
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enzyme is responsible for hydrolyzing starch. In the presence of amylase‚ a sample of starch will be hydrolyzed to shorter polysaccharides‚ dextrins‚ maltose‚ and glucose. The extent of the hydrolysis depends on how long it is allowed to react – if the starch is hydrolyzed completely‚ the resulting product is glucose. You will test for the presence or absence of starch in the solutions using iodine (I2). Iodine forms a blue to black complex with starch‚ but does not react with glucose. If iodine
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Treating starch How is starch and cellulose treated to allow them to be used by the yeast? (1)Starch is a complex carbohydrate that is insoluble in water. It is supplied by traditional staple foods such as cereals‚ roots and tubers. Starch is used in cooking for thickening foods such as sauce. In industry‚ it is used in the manufacturing of paper‚ textiles and as a mould in the manufacture of sweets such as wine gums and jelly beans. Fermentation (2)As with any food preparation‚ there are
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properties and structure. (http://www.ehow.com/list_5889717_four-macromolecules-occur-living-organisms.html) A few experiments were performed to test for the presence of the different types of macromolecules of various solutions. The iodine tested for starch and glycogen‚ Benedict’s test tested for reducing sugars for carbohydrates and biuret test was performed to test for proteins. It is necessary to understand how important controls are in a lab experiment. A control is where all of the experimental
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