Essays about: "cryoprotectants"

Showing result 1 - 5 of 7 essays containing the word cryoprotectants.

  1. 1. The effectivity of vacuum impregnation with glycerol and secondary metabolites on electroporated arugula leaves to improve freezing stability.

    University essay from Lunds universitet/Livsmedelsteknik och nutrition (master)

    Author : Oscar de Kuijer; [2021]
    Keywords : Pulsed electric field PEF; Arugula; Electroporation; Secondary metabolites; Glycerol; Food engineering; Livsmedelsteknik; Technology and Engineering; Agriculture and Food Sciences;

    Abstract : Freeze damage is a common issue in many food items. The cellular dehydration caused by freezing can be prevented through addition of a cryoprotectant. Research has shown that it is possible to improve the freezing tolerance of plant materials by addition of cryoprotectants, which forms hydrogen bonds with water molecules. READ MORE

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

    University essay from Lunds universitet/Livsmedelsteknik och nutrition (master)

    Author : George Lukhava; [2021]
    Keywords : 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;

    Abstract : 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. READ MORE

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

    University essay from SLU/Dept. of Biosystems and Technology (from 130101)

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

    Abstract : 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. READ MORE

  5. 4. Comparison between two different freezing solutions toevaluate the sperm survival after vapor freezing andsperm preparation.

    University essay from

    Author : Daniela Ordonez; [2016]
    Keywords : Semen preservation; human sperm; gradient wash; cryopreservation; in vitro fertilization;

    Abstract : Cryopreservation is used to freeze and store donor’s sperm, from men who are going throughcertain medical treatments such as chemotherapy or radiotherapy and from men withazoopermia or severe oligozoospermia. Stored sperm samples are used in artificialreproductive technologies. READ MORE

  6. 5. IMPACT OF CRYOPRESERVATION MEDIA ON SPERM MOTILITY

    University essay from

    Author : Stephanie Petersen; [2014]
    Keywords : Osmatic chock; Cryopreservation; Gradient centrifugation; Sperm progression;

    Abstract : The result of cryopreservation of semen is crucial for patients in need of fertility preservation.The cryopreservation method is not optimized since only 10 % the sperms are expected tosurvive the treatment. The sperms are exposed to many risk factors such as oxidative stress,osmotic chock and ice crystallization. READ MORE