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Influence of aroma active compounds on flavour of yogurts
Malina, Jiří ; Babák, Libor (referee) ; Vítová, Eva (advisor)
This diploma thesis deals with the questions of determination of aroma active compounds present in yoghurts. These compounds are crucial for flavour of these fermented dairy products. Four types of yoghurts were analyzed, creamy (10 % of fat), medium-fat and medium-fat Bio (3 % of fat) and light (0,1 % of fat), produced by Mlékárna Valašské Meziříčí, spol. s r.o. Analysis was carried out by gas chromatography with extraction of analytes by SPME - solid phase microextraction. Five groups of different aroma active compounds such as ketones, aldehydes, organic acids and their esters and alcohols in different amounts were determined. These compounds are mostly metabolic products of Streptococcus salivarius subsp. thermophilus, Lactobacillus delbrueckii subsp. bulgaricus, dairy yoghurt cultures usually used for yoghurt production. Less amounts are present in cow's milk or in dairy additives. Yoghurts were simultaneously sensorially evaluated using ranking test and scale test for determination of acceptability and flavour. The assessors were students and staffs of faculty of chemistry BUT.
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Prevention of recurrent nasal polyposis in patients with detection of enterotoxi n producing Staphylococcus aureus strains
Schalek, Petr ; Petráš, Petr (advisor) ; Julák, Jaroslav (referee) ; Malina, Jiří (referee) ; Vokurka, Jan (referee)
Enterotoxins produced by Staphylococcus aureus can act as superantigens and thus, regardless of the antigenic specificity, influence the course of chronic rhinosinusitis with nasal polyps (NP). The aim of this study was to determine if antibiotic treatment administered after endoscopic sinus surgery (ESS) for NP can positively influence the course of the disease compared to placebo. After ESS, 23 patients which tested positive, in a perioperative culture, for SA strains producing enterotoxins A - E and TSST-1, were randomized into 2 groups. Group A (13 patients), which in addition to treatment with intranasal steroids and saline douches, received oral anti-staphylococcal antibiotics (according to the minimal inhibitory concentration) for 3 weeks. Group B (10 patients) received a placebo. Both groups were compared preoperatively, then again at 3 and 6 months after surgery using a symptom-specific score, an endoscopic score and the SNOT-22 quality of life questionnaire. Slightly better results were achieved in patients who received antibiotic therapy. However, the differences were not statistically significant. The biggest difference was seen on the endoscopic score 3 months after surgery. This difference clearly favored patients in group A. Regardless of post-operative treatment, approximately 30 % of...
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Prevention of recurrent nasal polyposis in patients with detection of enterotoxi n producing Staphylococcus aureus strains
Schalek, Petr ; Petráš, Petr (advisor) ; Julák, Jaroslav (referee) ; Malina, Jiří (referee) ; Vokurka, Jan (referee)
Enterotoxins produced by Staphylococcus aureus can act as superantigens and thus, regardless of the antigenic specificity, influence the course of chronic rhinosinusitis with nasal polyps (NP). The aim of this study was to determine if antibiotic treatment administered after endoscopic sinus surgery (ESS) for NP can positively influence the course of the disease compared to placebo. After ESS, 23 patients which tested positive, in a perioperative culture, for SA strains producing enterotoxins A - E and TSST-1, were randomized into 2 groups. Group A (13 patients), which in addition to treatment with intranasal steroids and saline douches, received oral anti-staphylococcal antibiotics (according to the minimal inhibitory concentration) for 3 weeks. Group B (10 patients) received a placebo. Both groups were compared preoperatively, then again at 3 and 6 months after surgery using a symptom-specific score, an endoscopic score and the SNOT-22 quality of life questionnaire. Slightly better results were achieved in patients who received antibiotic therapy. However, the differences were not statistically significant. The biggest difference was seen on the endoscopic score 3 months after surgery. This difference clearly favored patients in group A. Regardless of post-operative treatment, approximately 30 % of...
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Influence of aroma active compounds on flavour of yogurts
Malina, Jiří ; Babák, Libor (referee) ; Vítová, Eva (advisor)
This diploma thesis deals with the questions of determination of aroma active compounds present in yoghurts. These compounds are crucial for flavour of these fermented dairy products. Four types of yoghurts were analyzed, creamy (10 % of fat), medium-fat and medium-fat Bio (3 % of fat) and light (0,1 % of fat), produced by Mlékárna Valašské Meziříčí, spol. s r.o. Analysis was carried out by gas chromatography with extraction of analytes by SPME - solid phase microextraction. Five groups of different aroma active compounds such as ketones, aldehydes, organic acids and their esters and alcohols in different amounts were determined. These compounds are mostly metabolic products of Streptococcus salivarius subsp. thermophilus, Lactobacillus delbrueckii subsp. bulgaricus, dairy yoghurt cultures usually used for yoghurt production. Less amounts are present in cow's milk or in dairy additives. Yoghurts were simultaneously sensorially evaluated using ranking test and scale test for determination of acceptability and flavour. The assessors were students and staffs of faculty of chemistry BUT.
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Frameworks for automatic testing
Malina, Jiří ; Pavlíčková, Jarmila (advisor) ; Okáč, Kamil (referee)
The aim of this Master Thesis Frameworks for automatic testing is to compare frameworks of five most popular programming languages of today. The comparison is divided into two parts. The first one deals with comparing by using the test patterns and the second part deals with measuring of exact values while working with tools. The outcome of this thesis are criteria that can be used for comparison of other frameworks for automatic testing other than used in this work.
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Framework Cappuccino
Malina, Jiří ; Pavlíčková, Jarmila (advisor) ; Tichý, Vladimír (referee)
In this bachelor thesis Framework Cappuccino I'm trying to test the framework of the same name. This study is divided into two parts, theoretical one and the practical one. In theoretical part I focus on the differences between this framework and that of Google Web Toolkit. Following with the questioning whether Cappuccino framework is able to implement such patterns which are necessary for creation enterprise applications. In practical part I tried to create several of my own applications while using the Cappuccino framework and to evaluate if the framework helps the work or if it makes it more difficult to write.
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