Sökning: "onion"
Visar resultat 1 - 5 av 17 avhandlingar innehållade ordet onion.
1. Enzymatic hydrolysis coupled to hot water extraction for determination of flavonoids in plants
Sammanfattning : The word sustainability is more and more frequently used within the field of chemistry and in many other fields. Green or sustainable chemistry was introduced during the 90 ́s as a field of chemistry where the environmental and health impacts of processes and products are evaluated and improved. LÄS MER
2. Pulsed Electric Field Treatment of Plant Tissue
Sammanfattning : A pulsed electric field (PEF) is a newly emerged non-thermal food processing technology which has characteristic effects on the cell membrane. PEF processing involves subjecting food to short, repeated pulses of a high electric field between an anode and a cathode. LÄS MER
3. Exploring layers of factors for farmers' adoption of ecological approaches
Sammanfattning : This thesis investigates different “layers” of factors for farmers’ adoption of ecological approaches, namely, individual, social and material layers of factors, with a mixed research methods approach. These layers of factors can be conceptualized using an onion as a metaphor, as factors influencing farmers’ behaviour can originate from the individual core, from the social environment or material environment, representing different layers in the onion. LÄS MER
4. Molecular development of a thermostable β-glucosidase for modification of natural products
Sammanfattning : The gene encoding a β-glucosidase originating from the extreme thermophile Thermotoga neopolitana has been cloned and expressed in Escherichia coli. The aim was to produce a thermostable enzyme that could be used to remove sugar residues from glucosylated natural products classified as flavonoids by applying a method combining extraction in hot pressurized water with enzymatic hydrolysis. LÄS MER
5. Analysis of Acrylamide and Anthocyanins in Foods : Extraction Optimization for Challenging Analytes
Sammanfattning : In this thesis, the main concern has been to improve the reliability of different parts of the analytical workflow (Paper I, II, IV &V). Additionally, one of the resulting optimized methods was used in a real application (Paper III). Paper I-II concerned the extraction of acrylamide (AA) from foods. LÄS MER