Search for dissertations about: "mixed acid fermentation"

Showing result 1 - 5 of 11 swedish dissertations containing the words mixed acid fermentation.

  1. 1. Lactic acid production: extractive fermentation in aqueous two-phase systems

    University dissertation from Department of Applied Microbiology, Lund University

    Author : Jordi Planes; Lund University.; Lunds universitet.; [1998]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; gel excludion chromatography; polyethylenimine; ethylene oxide propylene oxide; phase forming polymers; aqueous two-phase systems; extractive fermentation; Lactococcus; Lactobacillus; Mikrobiologi; bakteriologi; virologi; mykologi; bacteriology; virology; mycology; Microbiology;

    Abstract : There is an increased interest in the microbial production of lactic acid as a raw material for the synthesis of lactic acid polymers as biodegradable plastics. However, two factors limit the economical competitiveness of lactic acid production by microorganisms: lactic acid inhibition, which decreases both fermentation rate and the maximum lactic acid concentration, and the efficiency in the recovery of lactic acid. READ MORE

  2. 2. Biochemical conversion of biomass to biofuels pretreatment–detoxification–hydrolysis–fermentation

    University dissertation from Umeå : Umeå universitet

    Author : Venkata Prabhakar Soudham; Umeå universitet.; [2015]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Lignocellulosic materials; Ionic liquids; Pretreatment; Inhibitors; Detoxification; Ferrous sulfate and hydrogen peroxide; reducing agents; alkaline treatments; Hydrolysis; Fermentation; Biofuels; biokemi; Biochemistry;

    Abstract : The use of lignocellulosic materials to replace fossil resources for the industrial production of fuels, chemicals, and materials is increasing. The carbohydrate composition of lignocellulose (i.e. cellulose and hemicellulose) is an abundant source of sugars. READ MORE

  3. 3. Performance and Scale-up of Escherichia coli Fed-batch Processes- Oxygenation of the Human Growth Hormone Process

    University dissertation from Stockholm : Bioteknologi

    Author : Andreas Castan; KTH.; [2001]
    Keywords : E. coli; fed-batch; DO-control; oxygen transfer; cell lysis; DNA release; mixed acid fermentation; formate formation; oxygen enriched air supply; flow cytometry; recombinant human growth hormone rhGH ;

    Abstract : .... READ MORE

  4. 4. Formation, pattern and physiological effects of short-chain fatty acids - Impact of various indigestible

    University dissertation from Applied Nutrition and Food Chemistry, Lund University

    Author : Anna Maria Berggren; [1996]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Food and drink technology; probiotics; Acarbose; starch; oligosaccharides; dietary fibres; Short-chain fatty acids; fermentability; Livsmedelsteknik; Nutrition; Näringslära;

    Abstract : The short-chain fatty acids (SCFA) formed from colonic fermentation of indigestible carbohydrates have been suggested to exert different physiological effects. In this thesis the fermentability and SCFA produced from various indigestible carbohydrates in the hind-gut were investigated using balance experiments in rats. READ MORE

  5. 5. Physiology of Industrially Relevant Bacteria: Freeze-drying tolerance of Lactobacillus reuteri and Pseudomonas chlororaphis and product formation of Lactococcus lactis metabolizing maltose

    University dissertation from Applied Microbiology (LTH)

    Author : Johan Palmfeldt; Lund University.; Lunds universitet.; [2004]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; virologi; mykologi; Microbiology; bacteriology; virology; mycology; bakteriologi; Mikrobiologi;

    Abstract : When the metabolic activity of bacteria is exploited by the food and biotechnology industries, freeze-drying is commonly used to produce concentrated bacterial cultures with enhanced storage stability. The freeze-drying tolerance of the probiotic strain Lactobacillus reuteri and the biocontrol agent Pseudomonas chlororaphis has been characterized in this work. READ MORE