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Master's Thesis
Author of thesis: Ing. Michaela Lišková
Acad. year: 2013/2014
Supervisor: doc. Ing. Eva Vítová, Ph.D.
Reviewer: Ing. Mgr. Libor Babák, Ph.D., MBA
This master thesis deals with the assessment of aroma active compounds in fruits of currant (Ribes spp.). The theoretical part was focused on basic characteristics and chemical composition of currants, as well as the basic principles of techniques used: solid phase micro extraction (SPME), gas chromatography (GC) and sensory analysis. The main aim of the experimental part was to determine aroma active compounds in currants using SPME-GC-FID method. The profile and scale tests were used for assessment of sensory quality and tastiness of fruits. In total 18 varieties, among them 6 white, 6 red and 6 black currants, were evaluated. Fifty aroma active compounds were identified including 21 alcohols, 10 aldehydes, 2 acids, 8 ketones and 9 esters. The results were statistically evaluated using principal component analysis (PCA) to investigate the influence of single compounds on sensory quality of fruits.
currant, aroma compounds, SPME-GC-FID, sensory analysis
Date of defence
04.06.2014
Result of the defence
Defended (thesis was successfully defended)
Grading
A
Process of defence
1. Diplomantka seznámila členy komise s náplní a cílem diplomové práce. 2. Byly přečteny posudky na diplomovou práci. 3. Diplomantka akceptovala všechny připomínky oponenta a na všechny otázky odpověděla v plné šíři. Diskuse -
Language of thesis
Czech
Faculty
Fakulta chemická
Department
Institute of Food Science and Biotechnology
Study programme
Chemistry and Technology of Foodstuff (NPCP_CHTP)
Field of study
Food Science and Biotechnology (NPCO_CHTP)
Composition of Committee
prof. Ing. Peter Šimko, DrSc. (předseda) doc. Ing. Jiřina Omelková, CSc. (místopředseda) prof. RNDr. Ivana Márová, CSc. (člen) doc. RNDr. Alena Španová, CSc. (člen) doc. Ing. Bohuslav Rittich, CSc. (člen)
Supervisor’s reportdoc. Ing. Eva Vítová, Ph.D.
Grade proposed by supervisor: A
Reviewer’s reportIng. Mgr. Libor Babák, Ph.D., MBA
Grade proposed by reviewer: A
Responsibility: Mgr. et Mgr. Hana Odstrčilová