LA SALLE GREEN HILLS Comparative Study Between the Bioplastic Properties of Agar-Agar (Gelidium amansii) and Potato (Solanum tuberosum) Starch Submitted by: Kyle Emmanuel A. David Rynno Gabriel Luis T. Garde Justin Carlo P. Gregorio Rufo Angelo M. Mauricio III Christian Michael A. Perreras II-B Submitted to: Miss Alvie Diaz Submitted on: January 30‚ 2012 ABSTRACT Bioplastic is a form of plastic derived from renewable biomass
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Concentration ·Enzyme Concentration The factor I am changing is surface area of potato containing Catalase. By increasing the surface area of the potato‚ you make more Catalase molecules be exposed to hydrogen peroxide. This will result in the rate of reaction increasing because it increases the chance of more successful collisions between the enzyme and the substrate. Catalase is an enzyme found in food such as‚ potato. It is used to break down a poisonous by-product of metabolism called hydrogen
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Experiment to Investigate Osmosis in Potatoes The aim of this experiment is to investigate the movement of water in and out of plant cells. The cells chosen for study will be taken from potato tubers. Firstly I will explain what osmosis is. Osmosis is the passage of water from a region of high water concentration through a semi permeable membrane to a region of low water concentration. This definition contains three important statements: a) It is the passage of water through a semi permeable membrane
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An investigation to find the water potential of potato and carrot tubers in a sucrose solution‚ of concentration 0.00 – 0.50Mol‚ over a 24 hour period Interpretation Written Communication C1 From our graph it can be seen that the concentration of sucrose solution is 0.18 M at 0% change in mass for the potato and 0.355 M at 0% change in mass for the carrot. I will use these values to find the solute potential by using the calibration graph. I will work out the water potential by using the
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Results The relative osmotic concentration was determined by measuring the percent change in mass of the potato tissues. Change in mass was measured of six solutions‚ each containing different levels of concentration (0‚ 0.1‚ 0.2‚ 0.3‚ 0.4‚ and 0.5). The percent change in mass decreased as sucrose concentration increased‚ therefore‚ relative osmotic concentration also decreased as sucrose concentration increased. However‚ the osmotic concentration of 0.2 M sucrose solution was relatively greater
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and sweet potato peelings as chicken feed supplement on the growth of the chick. More than 50 billion chickens are reared annually as a source of food for both their meat and their eggs. Chickens farmed for meat are called broilers‚ whilst these farmed for eggs are called egg-laying hens. In total‚ UK alone consumes over 29 million eggs per day. Some hens can produce over 300 eggs a year. The majority of poultry are raised using intensive
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generally known pH level for water is 7‚ or neutral. Potato homogenate‚ liver homogenate and egg white solution was used as the biological material. A buffer solution that serves as a model of a biological material’s chemical that helps it carry out homeostasis was also used in the experiment‚ being tested in the same manner as the other materials. This topic was tested in order to confirm a tissue’s biological chemical processes‚ presence of buffers‚ and their ability to maintain its needed pH level
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and the pellet was discarded. A 0.5 mL sample was frozen down for later analysis of purification method. The clarified homogenate was rapidly stirred with a pre-chilled stir bar while 19.77 grams of ammonium sulfate was added slowly for a 40% cut precipitation. The clarified homogenate was stirred for 15 minutes after the ammonium sulfate was dissolved. The clarified homogenate was centrifuged for 15 minutes at 15‚000 gx. The volume of the 40% cut supernatant was measured and the pellet was discarded
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Roy Levin Bio 11 Lab Dr.Izquierdo Analysis of Macromolecules in Tissue Homogenates of Bos taurusMaterials and Methods The homogenates provided were made by homogenizing tissues in a sucrose phosphate buffer in a 1:20 ratio. The protein concentration in bovine cells was measured by diluting the homogenate with a 1:5 ratio; 50 microliters of homogenate and 200 microliters of water. Then 5 known protein concentration samples which were 0.4‚ 0.8‚ 1.2‚ 1.6‚ 2.0 mg/ml of bovine serum were used to
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and proteins were solubilized. LDH was purified from the ammonium sulfate precipitated protein mixture by affinity chromatography and its activity was studied by spectrophotometric determination of NADH at 340 nm. From Pierce BCA assay of crude homogenate‚ initial protein concentration was shown to be 100 mg/ml. The final protein concentration of the pooled affinity sample was shown to be 0.2 mg/ml. It was found that the total specific activity of LDH was 58.5 µmol/min/mg‚ and yield of 0.6%. Even
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