Integrated evaluation of variety of potatoes bred in Latvia. Summary of promotion work for acquiring the Doctor's degree of Engineering Sciences in sector of Food Sciences | Latvijā selekcionēto šķirņu kartupeļu integrētais novērtējums. Promocijas darba kopsavilkums inženierzinātņu doktora zinātniskā grāda iegūšanai pārtikas zinātnes nozarē
2010
Murniece, I., Latvia Univ. of Agriculture, Jelgava (Latvia). Faculty of Food Technology
Doctoral thesis has been worked out from September of 2006 to October 2009 at the Department of Food Technology in the Packaging Material's Attributes Research laboratory, Food Microbiology laboratory; Analytical Laboratory of Agronomic Research of the Latvia University of Agriculture; Institute of Biology of the Latvia University and Chemistry Division 1 of the Swedish National Food Administration (Uppsala). The object of the thesis is five potato varieties bred and cultivated in Latvia: 'Lenora', 'Brasla', 'Madara', 'Zīle' and 'Imanta'. The aim of the promotion work - to carry out an integrated evaluation of five potato (Solanum tuberosum L.) varieties bred in Latvia, determining their suitability to different types of frying. The following tasks have been set to reach the aim: 1) to evaluate physical and chemical differences in potato varieties bred in Latvia after harvesting and storage; 2) to analyse the physical and chemical changes in potatoes, using different methods of frying potatoes; 3) to determine the content of acrylamide in fried potatoes, which are prepared before and after storage; 4) to study the microstructure changes under the influence of frying; 5) to calculate the nutritional value of potatoes fried in different ways; 6) to carry out an integrated evaluation of potatoe varieties, basing on the research results; 7) to calculate the weight yield and nutrient retention factors in fried potatoes.
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