Materials and Methods Potato peels Fresh potato or eggplant tubers were obtained from local market of Assuit in August 2011. The tubers were washed by water and peeled using kitchen vegetable peeler. The peels were dried in a hot air oven (VEBMLW Medizinische, Gerete, Berlin, Germany) at 200°C for 1 h. The dried peels were ground into a fine powder in laboratory mill (120 Perten, USA). The ground powder that passed through an 80 mesh sieve was packed into polyethylene dark bags and was stored at
Osmosis lab - Russell Koh 12.6 T14! ! Aim! In this investigation you will be calculating the concentration of the cytoplasm in potato cells.! ! Variables:! Independent variable! Concentration of sugar solution(mol)! ! Dependent variable! The percentage change in mass of the potato after the experiment is over. (%grams)! ! Controlled variables! Surface area to volume ratio (SA:V ratio)! Temperature of the solution! Time allowed for osmosis to occur! ! Hypothesis! I predict that there will be a negative
The data that has been derived from the experimentation supports and substantiates the hypothesis that the mass of potato stripes decrease when they are put into solution with greater concentration and that the mass of potato stripes increase when they are put into a less concentrated sucrose solution or a dilute solution. This is demonstrated on the scatter graph above with a downward sloping line of regression, which indicates a negative correlation. The largest percentage mass change was seen
From the above graph (Fig. 1), the change in tissue mass percentage for the damaged tissue of the potato tuber increases as the sucrose solution concentration increases, there were more positives at concentrations 0.15 mol/L (7.3%), 0.20 Mol/L (6.8%), 0.25 Mol/L (3.02%) ,0.3 Mol/L (2.65%), 0.35 Mol/L (2.84%) and 0.50 Mol/L (3.69%) respectively. For the young tissue, the % change in tissue mass decreases as sucrose concentration increased. At 0.25 Mol/L (-0.6%), 0.3 Mol/L (-1.15%), 0.35 Mol/L (4
Criterion B: Osmotic Potential in a Potato Introduction Context: The purpose of my scientific investigation is to investigate “the effects an epidermis has on the osmotic potential of a potato”. This is because, I have observed that a lot of food chains around the world choose to take the epidermis off the potato while soaking it in water. Whereas, other food chains choose to keep the epidermis on the potato while soaking it in water. The aim of the test is to determine which one of these practices
temperature at 25°C is used. The selective medium that uses in this experiment includes the acidified potato dextrose agar (PDA), Dichloran Rose Bengal Chloramphenicol (DRBC) agar, and yeast and mold agar (YMA). Acidification of the PDA agar by using tartaric acid, decrease the pH values to 3.5 that inhibit most of the growth food spoilage and food poisoning bacteria. PDA agar contained rich potato infusion that promotes the growth of yeast and molds. DRBC agar is a selective media that commonly used
Osmosis Lab Report BIO 2101-02 Jasmine Monger (+Tayshondalyn Huntley, Brandi Burke, Jasmine Vann) Dr. Carly Kemmis December 5, 2014 Introduction Osmosis is the movement of water from a low concentration to a high concentration across a different permeable membrane. When talking about osmosis three terms are usually connected to it or heard during the same time. Those three terms are hypotonic, hypertonic, and isotonic. These three terms can be categorized as the tonicity, amount of solute
are eating Genetically Modified Food every day. While the food and chemical claim that Genetically Modified Food is safe, a considered cannot evidence shows otherwise. In Seeds of Deception, Jeffrey Smith, a former executive with leading independent labs testing for Genetically Modified presence in foods, documents these serious health
INTRODUCTION Vaccines are used widely in the world. With the discovery of various vaccines mortality rate caused by various infectious organisms have reduced. Their use has been considered one of the safe and effective measures to control various infectious diseases. Plants offer enormous potential as production platforms for vaccines and therapeutic proteins. Vaccines derived from plants present an alternative to conventional vaccines by facilitating safe and effective oral delivery through intake
Media composition: Fermentation broth was prepared using two different substrates. The composition of the culture broth is given below: Fermentation broth using waste bread as substrate: Waste bread 1.5% (NH4)2SO4 0.2% MgSO4.7H2O 0.04% KCl 0.1% KH2PO4 0.2% Yeast Extract 0.1% pH 6.5 Fermentation broth using waste of Citrus sinsencis as substrate: Waste fruit 1.5% (NH4)2SO4 0.2% MgSO4.7H2O 0.04% KCl 0.1% KH2PO4 0.2% Yeast Extract 0.1% pH 6.5 Media preparation: Using