Essays about: "benzoic acid"

Found 5 essays containing the words benzoic acid.

  1. 1. Synthesis of aromatic thiol ligands for the formation of thermoelectric materials

    University essay from KTH/Kemi

    Author : Clément Bouchut; [2024]
    Keywords : ligand; organic chemistry; organic synthesis; thermoelectric materials; thiol; ligand; organisk kemi; organisk syntes; termoelektriska material; tiol;

    Abstract : I detta arbete så har en uppsättning aromatiska ditiol-ligander framställts (3,5-dimerkaptobensoesyra I, methyl-3,5-dimerkaptobensoat II, 3,5-dimerkaptotoluen III, 4,6-dimerkaptoisoftalaldehyde IV). En trestegssyntes innehållande Newman-Kwart omlagring som nyckelsteg användes för framställning av föreningarna I-III medan förening IV togs fram via en annan syntesväg. READ MORE

  3. 2. A new generation ofsmart food packaging : A combination of releasing anti-microbial and generation carbon dioxide inmeat packaging

    University essay from Karlstads universitet

    Author : samar salahieh; [2023]
    Keywords : adsorption isotherms; desorption kinetics; benzoic acid; thymol; modified calcium carbonate; silica gel; carbon dioxide; food pad.; adsorptionsisotermer; desorptionskinetiken; bensoesyra; tymol; modifierat kalciumkarbonat; kisel gel; koldioxid; food pad.;

    Abstract : Abstract Food sustainability depends significantly on packaging since it helps maintainfood safe and fresh throughout its shelf life, resulting in the least amount ofwaste and the least negative environmental impact. The main objective of thisstudy is to determine the adsorbed and released amount of antimicrobial agents(benzoic acid and thymol) on modified calcium carbonate (MCC) by investigating adsorption isotherm at 25°C and desorption kinetics at both 22°C and5°C of anti-microbial to identify potential solutions to enhance the long-termsustainability of fresh products such as meat. READ MORE

  4. 3. Method development of an in vitro vertical Franz diffusion cell system to assess permeation of cosmetic active ingredients

    University essay from Uppsala universitet/Institutionen för kemi - Ångström

    Author : Johanna Mattiasson; [2020]
    Keywords : chemistry; method development; Upsalite; Disruptive Materials; Franz; diffusion; penetration; permeation; skin; pharmaceuticals; cosmeceuticals; skincare; cosmetics; actives; mesoporous; material chemistry; kemi; kosmetika; Upsalite; Disruptive Materials; Franzcell; diffusion; läkemedel; metodutveckling; hud; penetration;

    Abstract : For evaluation of potential skincare ingredients, an in-house method using Static Franz diffusion cells and dialysis membranes was developed. Benzoic acid was chosen as a model substance along with L-ascorbic acid and α-Tocopherol. The cell conditions were tailored to encourage transmembrane diffusion. READ MORE

  5. 4. The influence of oxygen in the benzoic acid degrading community from a freshwater ecosystem : Does oxygen determine the function and composition of the bacterial community?

    University essay from Uppsala universitet/Institutionen för biologisk grundutbildning

    Author : Carla Perez Mon; [2016]
    Keywords : ;

    Abstract : .... READ MORE

  6. 5. Tillväxtinhibering på fast substrat av Aspergillus niger-sporer genom tillsats av sorbin-, bensoe- och fenylmjölksyra

    University essay from SLU/Dept. of Microbiology

    Author : Emma Boström; [2011]
    Keywords : livsmedelskvalitet; Aspergillus niger-sporer; PLA; fast substrat; låg sporkoncentration; pH;

    Abstract : Mögelkontaminering är ett problem inom livsmedelsindustrin eftersom den kan orsaka minskad hållbarhet och minskad säkerhet av livsmedel. Aspergillus niger är ett vanligtförekommande mögel i varmare klimat och hittas därför ofta i importerade livsmedel. A.niger kan till exempel orsaka stor förstörelse av färsk frukt och grönsaker. READ MORE