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Hittade 5 uppsatser som matchar ovanstående sökkriterier.

  1. 1. Effects of Vacuum Impregnation with Various Substances in Combination with Pulsed Electric Field to Improve the Freezing Tolerance of Arugula Leaves

    Master-uppsats, Lunds universitet/Livsmedelsteknik och nutrition (master)

    Författare :George Lukhava; [2021]
    Nyckelord :Food Engineering; Food Preservation; Pulsed Electric Fields; PEF; Vacuum Impregnation; VI; Arugula; Cryoptrotectant; Glycerol; Secondary Metabolites; Folic Acid; Folate; Folacin; Vitamin B1; Thiamine; Thiamin; Agriculture and Food Sciences;

    Sammanfattning : As of 2020 an estimated number of 821 million people across the world are undernourished and that figure is expected to grow by 2 billion before the end of 2050 (United Nations Sustainable Development 2020). Despite this, every year over 1/3 of food produced globally is disposed of without consumption (Global Panel on Agriculture and Food Systems for Nutrition 2018), and the actual number might be much higher. LÄS MER

  3. 2. Nuvarande utbredning och framtida spridningsrisker av arsenik i grundvattenakviferen i Hjältevad

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Elin Pöllä; [2018]
    Nyckelord :Arsenic; arsenic mobility; contaminated soil; partition coefficients; ArcMap; leaching tests; impregnation plants; Arsenik; arseniks mobilitet; förorenad mark; fördelningskoefficienter; ArcMap; lakförsök; impregneringsanläggningar;

    Sammanfattning : Arsenik är en naturligt förekommande halvmetall som orsakar stora hälsoproblem genom exponering t.ex. via dricksvatten. På grund av arseniks negativa effekter på människors hälsa sänktes den tillåtna gränsen i dricksvatten från 50 μg/l till 10 μg/l 2003 av WHO. LÄS MER

  4. 3. The use of cryoprotectants in unrooted cuttings of Pelargonium zonale, in order to increase their life expectancy

    Kandidat-uppsats, SLU/Dept. of Biosystems and Technology (from 130101)

    Författare :Maria Hellström; [2017]
    Nyckelord :cryoprotectants; mother plants; Pelargonium cuttings; pulsed electric fields; vacuum impregnation; unrooted;

    Sammanfattning : The rooting capacity of an unrooted Pelargonium zonale cutting decreases immensely 96 hours after being cut. The aim of this paper was to evaluate if two different cryoprotectants, 25% glucose and 30% trehalose, with the help of vacuum impregnation and pulse electric fields could result in an increase in the life expectancy of these cuttings. LÄS MER

  5. 4. Electroporation of stomata: effect on drying kinetics and aroma compounds of Genovese basil leaves

    Master-uppsats, Lunds universitet/Livsmedelsteknik och nutrition (master)

    Författare :Stephen Kwao; [2015]
    Nyckelord :Basil leaves; Vacuum; Impregnation; Reversible electroporation; Drying kinetics; Aroma compounds; food engineering; livsmedelsteknik; Technology and Engineering;

    Sammanfattning : The aroma components of herbs and spices are very sensitive to heat, complicating their drying process. Until now, exporters of dried herbs face the challenge of low total phenolic contents and efforts are constantly being made to improve the drying efficiency of herbs and conserve their aroma. LÄS MER

  7. 5. Phytoremediation of a highly creosote-contaminated soil by means of Salix viminalis

    L3-uppsats, SLU/Dept. of Soil Sciences

    Författare :Karin Önneby; [2005]
    Nyckelord :wood impregnation site; phytoremediation; salix viminalis; PAH degredation; phenanthrene; anthracene; fluoranthene; pyrene; benzo[a]pyrene; GC-MS; bacterial strains; extracted and cultivable bacteria; bulk soil; rhizosphere soil;

    Sammanfattning : The aims of this study were to investigate whether Salix viminalis could grow in a highly creosote contaminated soil and, if so, whether the introduction of the plant enhanced the dissipation of polycyclic aromatic hydrocarbons (PAHs). The purpose was also to examine whether inoculation of two different bacterial strains further enhanced the decrease of the contaminant. LÄS MER