Sökning: "Citric acid"

Visar resultat 6 - 10 av 59 avhandlingar innehållade orden Citric acid.

  1. 6. Atmospheric Change and Potato. The Impact of tropospheric ozone and elevated carbon dioxide on tuber yield and quality

    Författare :Kristin Piikki; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Bintje; carbohydrate; carbon dioxide; citric acid; cultivar; fructose; glucose; Kardal; macronutrient; malic acid; mineral; open-top chamber; OTC; ozone; potato; Solanum tuberosum; starch; variety; yield;

    Sammanfattning : .... LÄS MER

  3. 7. Malic acid production by Aspergillus oryzae

    Författare :Christoph Knuf; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; C4 dicarboxylic acids; Aspergillus oryzae; systems biology; fermentation; malic acid; metabolic engineering;

    Sammanfattning : Malic acid is a C4 dicarboxylic acid which is used as an acidulant in food and beverages. It isalso considered as a bio-building block to replace petrochemically derived compounds in thepost oil era. This organic acid can be biotechnologically derived from fermentation usingrenewable feedstocks as carbon source. LÄS MER

  4. 8. Effects of plasticizing and crosslinking on the mechanical and barrier properties of coatings based on blends of starch and poly(vinyl alcohol)

    Författare :Asif Javed; Lars Järnström; Henrik Ullsten; Peter Rättö; Karlstads universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Citric acid; Glycerol; Polyethylene glycol; Barrier properties; Starch; Mechanical properties; Polyvinyl alcohol; Adhesion; Cross linking; Extrusion coating; Chemical Engineering; Kemiteknik;

    Sammanfattning : In the last decades, intensive research has been carried out in order to replace oil-based polymers with bio-based polymers due to growing environmental concerns. So far, most of the barrier materials used in food packaging are petroleum-based materials. LÄS MER

  5. 9. Effects of plasticizing and crosslinking on coatings based on blends of starch-PVOH and starch-lignin

    Författare :Asif Javed; Henrik Ullsten; Peter Rättö; Lars Järnström; Douglas Bousfield; Karlstads universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Citric acid; Glycerol; Polyethylene glycol; Barrier coatings; Starch; Lignin; Mechanical properties; Poly vinyl alcohol ; Creasing; Adhesion; Cross-linking; Extrusion coating; Chemical Engineering; Kemiteknik;

    Sammanfattning : A barrier material is usually needed on a fiber-based food package to protect the packed food from gases and moisture and thus maintain its quality. Barrier materials presently used in food packaging applications are mostly petroleum-based polymers. LÄS MER

  7. 10. Aroma Partition and Release from Soft Drinks, Jam, and Jellied Sweets

    Författare :Annika Hansson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; gas chromatography; aroma; gel; model mouth; partition coefficient; release; citric acid; pectin; in-nose; sugar; proton-transfer reaction mass spectrometry; soft drink;

    Sammanfattning : The research described in the present thesis was focused on the influence of food ingredients and structures on the partition and release of aroma compounds from model systems such as soft drinks, jam, and jellied sweets. The effects on aroma release were studied during both static and dynamic conditions, the latter by both model mouth and in-nose measurements. LÄS MER