Sökning: "degree of polymerization DP"

Hittade 5 avhandlingar innehållade orden degree of polymerization DP.

  1. 1. Retrogradation Properties of Starch

    Detta är en avhandling från Department of Food Technology, Lund University

    Författare :José Silverio; Lund University.; Lunds universitet.; [1997]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; surfactants; lipids; degree of polymerization DP ; isothermal microcalorimetry; differential scanning calorimetry DSC ; crystallinity; amylose; amylopectin; gelatinization; starch; retrogradation; temperature cycling; PCA; Food and drink technology; Livsmedelsteknik;

    Sammanfattning : The main purpose of this thesis was to examine various factors influencing starch retrogradation. The reassociation events of starch, which are closely linked to the staling of bakery products, were mainly studied by thermal analysis. Some aspects of starch gelatinization are also included. LÄS MER

  2. 2. Formation of carboxylic acids in rats and humans given indigestible carbohydrates Effects of monomeric composition, solubility, molecular weight and probiotics

    Detta är en avhandling från Applied Nutrition and Food Chemistry, Lund University

    Författare :Ulf Nilsson; Lund University.; Lunds universitet.; [2006]
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Carboxylic acids; Short-chain fatty acids; Fructo-oligosaccharides; Prebiotics; Probiotics; Näringslära; Nutrition;

    Sammanfattning : There is increasing evidence that fermentation in the large intestine is important for health, and that health-promoting effects are mediated by fermentation products such as butyric and propionic acid. As the formation of carboxylic acids (CAs) from various carbohydrates reaching the colon has been shown to vary, it is of great interest to identify food factors that could be of importance to this process. LÄS MER

  3. 3. Carbohydrate degradation and dissolution during Kraft cooking Modelling of kinetic results

    Detta är en avhandling från Karlstad : Karlstad University

    Författare :Dan Johansson; Karlstads universitet.; [2008]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TECHNOLOGY Chemical engineering; TEKNIKVETENSKAP Kemiteknik; Chemical Engineering; Kemiteknik; Kraft cooking; softwood; hardwood; cellulose; xylan; glucomannan; degradation; dissolution;

    Sammanfattning : Chemical pulp fibres from wood are commonly used in products associated with packaging as well as with printing and writing. The prevalent way of liberating fibres is by subjecting wood chips to Kraft cooking. This process has a history of almost 130 years and should be both well described and well established. LÄS MER

  4. 4. Surface Modification of Cellulose by Covalent Grafting and Physical Adsorption

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Linn Carlsson; KTH.; KTH.; [2014]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Surface modification; cellulose; covalent modification; physical adsorption; polymer synthesis;

    Sammanfattning : The interest in new environmentally friendly cellulose‐based productshas increased tremendously over the last years. At the same time theSwedish forest industry faces new challenges in its strive to increase the utilization of cellulose fibers in high‐value end‐products. LÄS MER

  5. 5. Bioplastics from Biomass - Acetylation of Xylans with Green Chemistry

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Agnes Stépán; [2013]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : There is social, environmental and increasing economic pressure on the industrial sector to substitute non-renewable resources with renewable ones as the increasing World population is exponentially depleting the fossil fuel supplies of the Earth. Each year about 260 million tons of plastics are produced from crude oil and most of it ends up as waste. LÄS MER