Essays about: "volatile substances"

Showing result 21 - 25 of 28 essays containing the words volatile substances.

  1. 21. Two techniques for investigation of proteins and short-chain fatty acids of Lactobacillus plantarum in presence of galactooligosaccharides

    University essay from Lunds universitet/Examensarbeten i molekylärbiologi

    Author : Marusa Bratus; [2014]
    Keywords : Biology and Life Sciences;

    Abstract : Popular science summary: This thesis is a starting point of a bigger project, aimed to develop synbiotic food supplements. The role of probiotics and prebiotics in human health is getting increasingly recognised as offering beneficial impact to the host. READ MORE

  3. 22. Lipid oxidation in differently aged beef : use of static headspace gas chromatographic and 2-thiobarbituric acid reactive substance methods (TBARS)

    University essay from SLU/Dept. of Animal Nutrition and Management

    Author : Jinzhu Wen; [2013]
    Keywords : lipid oxidation; beef ageing; TBARS; static headspace gas chromatography;

    Abstract : This thesis assesses and compares lipid oxidation in beef samples from different ageing approaches by using static headspace gas chromatographic method and 2-thiobarbituric acid reactive substances. Beef samples were compared between three different ageing methods: hang ageing (traditional dry ageing); vacuum bag ageing (wet ageing); and tublin bag ageing and two ageing durations, 10 days or 21 days. READ MORE

  4. 23. Development of a method for determination of pesticide residues in honey using liquid chromatography tandem mass spectrometry

    University essay from SLU/Dept. of Food Science

    Author : Magdalena Alehagen; [2012]
    Keywords : pesticide residues; honey; liquid chromatography; tandem mass spectrometry;

    Abstract : Honey is a product that may contain pesticide residues due to contamination from bees pollinating various plants as well as elimination of vermin inside the hive. Different methods are needed for analysis of pesticides, since the term includes a wide range of different substances. READ MORE

  5. 24. Kemisk kommunikation hos häst

    University essay from SLU/Dept. of Clinical Sciences

    Author : Lena Axelsson; [2011]
    Keywords : kresol; feromon; häst; östrus;

    Abstract : Feromoner är substanser som används vid kemisk kommunikation mellan individer av samma art. Hos häst har ännu inga feromoner identifierats men studier gjorda i Litauen tyder på att kresoler, ämnen som bildas i tarmen vid nedbrytning av bland annat aminosyror och som utsöndras via urin och avföring, kan ha feromon effekt hos häst. READ MORE

  6. 25. Methyl salicylate production by the fungus Ophiostoma pluriannulatum isolated from Pine Weevil frass

    University essay from KTH/Skolan för kemivetenskap (CHE)

    Author : Emil Norin; [2011]
    Keywords : Ophiostoma pluriannulatum; Methyl salicylate; SPME; volatiles; antifeedant;

    Abstract : One great issue of reforestation is the infestation of pest insects. The pine weevil (Hylobius abietis L.) is one of the economically most important pest insects in Europe and Asia. When insects feed on the trees the plants emit compounds that repel the insects. READ MORE