If we place the potato in a sucrose solution with a similar solute concentration as a potato, then the least amount of water will diffuse into or out of the potato cells. This occurs because this scenario will be initially closest to an isotonic solution, allowing us to determine the solute concentration of a potato. Materials: * Knife/ Cork Borer * Seven 30 cm pieces of Dialysis tubing * Thirteen 250 mL Beakers * 15% Glucose Solution * Glucose Test Strips * 1% Starch Solution * Distilled water * Lugol’s solution * 25 mL of: * .2 M sucrose * .4 M sucrose * .6 M sucrose * .8 M sucrose * 1 M sucrose * Paper Towels * Clock * Potatoes * Plastic
Hypotonic means less salute and more water. For this lab, we can apply these principles to plant cells. The plant cells have a semi permeable membrane so they can experience osmosis and diffusion as discussed earlier. When it comes to the potato cells, added with NaCl (salt) it will experience a reaction changing the form of the cells. The hypothesis of this experiment goes as follows, If we place potato cells in a salt solution, then the cells will shrink.
Biotechnology can be used to slow down the process of food spoilage. It can thus result in fruits and vegetables that have a greater shelf life. Genetic Modification to Produce New Foods Genetic engineering in food can be used to produce totally new substances such as proteins and other food
Too little magnesium in our diet can trigger headaches and fatigue. Magnesium-rich foods include dark, leafy greens, soybeans, salmon and pumpkin seeds. Raw vegetables. Munching on raw veggies will help release that clenched jaw and ward off tension. Serotonin boosters.
The Effect of pH on Function of Catecholase Enzyme in Potato Abstract In biochemical reactions, enzymes activity could be changed based on these factors: concentration of substrates, salt concentration, allosteric regulators, temperature and pH. Inventing the hypothesis is increasing concentration of pH would increase the activity of enzyme Catecholase and the rate of reaction. Therefore, the purpose of this experiment was to test the effect of pH on Catecholase (one kind of enzymes in potato) activity by using pH12 buffer. By using the Spectronic 20D+ Spectrophotometer, the change in absorbance over time can be recorded. The result proved: Contract to the hypothesis, at pH 12, activity of enzyme Catecholase and the rate of reaction decreased.
Upon its discovery, HbA1c was proposed as a useful biomarker for diabetes monitoring (Koenig et al., 1976a, Koenig et al., 1976b), and endogenously produced AGEs attracted further scientific attention, beyond food chemistry, from fields including medical biochemistry and pathology. At this point it is important to highlight that there are two sources of AGEs: the endogenously produced AGEs, a product of the reaction between proteins and sugars in the circulation, and exogenous AGEs, produced during cooking and absorbed in the small intestine (~10%
Critical Review Are Genetically Modified Plants Useful and Safe? Jacques-Henry Weil Institut de Biologie Moleculaire des Plantes, Strasbourg, France Summary So far, plants have been genetically modified essentially to achieve resistance to herbicides, or to pathogens (mainly insects, or viruses), but resistance to abiotic stresses (such as cold, heat, drought, or salt) is also being studied. Genetically modified (GM) plants with improved nutritional qualities have more recently been developed, such as plants containing higher proportions of unsaturated fatty acids (omega-3 and omega-6) in their oil (to prevent cardio-vascular diseases), or containing b-carotene as in the golden rice (to prevent vitamin A deficiency). Possible risks for human health (such as the production of allergenic proteins), or for the environment (such as the appearance of superweeds as a result from gene flow), should be carefully studied, and a science-based assessment of benefits vs. risks should be made on a csae by case basis, both for GM plants and for plants obtained by conventional breeding methods. IUBMB Life, 57: 311 – 314, 2005 Keywords GM plants; herbicide resistance; pathogen resistance; abiotic stress; Bt; golden rice; bcarotene; molecular farming; antibiotic resistance; allergenic proteins; gene flow Applications of genetic engineering to medicine, which have allowed the production of a number of proteins of therapeutic importance (such as insulin, growth hormone, plasminogen activator, antihaemophilic factors, etc.)
Nutrition and Supplements These nutritional tips may help reduce symptoms: * Eliminate all suspected food allergens, including dairy, wheat (gluten), soy, chocolate, corn, preservatives, and food additives. Your health care provider may want to test you for food allergies. * Eat more antioxidant rich foods (such as green, leafy vegetables and peppers) and fruits (such as blueberries, tomatoes, and cherries). * Avoid refined foods, such as white breads, pastas, and sugar. * Eat fewer red meats and more lean meats, cold water fish, tofu (soy, if no allergy) or beans for protein.
Cheese making is a relatively simple process but it requires careful control of time and ingredients. This report aims to show the production methods involved in cottage cheese manufacturing and to explore the chemical reactions that occur. 2.0 Introduction A Complex food is one that is comprised of several key ingredients and where each of those key ingredients plays a specific role in its production. Cottage Cheese is a variety of fresh soft cheese that comprises of individual grains. It is widely viewed as a healthy option and commonly eaten by people on a weight management plan, as it is a good source of protein whilst remaining low in fat (Deland, 2012).
Strategy For this coursework, I will be investigating the following question: ‘How do different concentrations of salt solutions affect the mass of the potato after the process of osmosis?’ Osmosis is the movement of water particles from a high concentration of water particles to a low concentration across a partially permeable membrane. A partially permeable membrane is a membrane that acts as a barrier to some molecules but allows others to freely diffuse through. The partially permeable membrane of cell membranes prevent large molecules such as Sucrose, protein and starch to pass through but allow smaller molecules such as oxygen, carbon dioxide and water, glucose and amino acids to proceed. In this coursework we will be using potato to test the rate of osmosis. If the area around a cell has a higher water concentration it will gain water by osmosis.