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"Fresh" pastries in retail sale of the Czech republic
MATĚJČKOVÁ, Jana
The diploma thesis identifies the attitude of the Czech public on the issue of fresh breads and pastries prepared from frozen semi-finished product based on consumer research. It is focused on the supply side, specifically on analysis of sales of fresh bread and bakery products prepared from frozen semi-finished products within the selected retail units. Further to the survey among Czech producers of bread, and also monitored supply of bread from frozen semi-finished products in selected retail chains.
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Možnosti uplatnění netradičních surovin při výrobě chleba a pečiva
Prokop, Jakub
The bechelor thesis deals with production of bread and pastry, listing less common raw materials used for production and introducing practical experiment consist producing pastry with less common raw material. Production of bread and pastry is described from basic flour production as main ingredient, through dough preparation, mixing, resting, shaping products, proofing, ba-king a finaly cooling. Follow by list of raw materials moreless common for bread and pastry production, describing nutritional and bakery characteristics and effect on produ-cts quality. Last part describes methods of preparation pastry with malt, baker experi-ment and sensoric analysis results evaluation.
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A study of the possibility of waste pastries using for the bioproduction of selected metabolites
Hudečková, Helena ; Vránová, Dana (referee) ; Babák, Libor (advisor)
The aim of this diploma thesis was to study the possibility of using waste bread to bioproduction of selected metabolites. As bakery waste was used waste bread that came from coffee-house “Zastávka”. Bread was pre-treated by grinding into small particles and then it was made to form 15% w/v suspension, which was subjected to enzymatic hydrolysis. For the hydrolysis has been used the -amylase for liquefaction of the substrate and that was followed by a glucoamylase which sacharificated the substrate. There have been several methods of hydrolysis from which was chosen the optimal method for pre-treatment of the substrate prior to fermentation. The effectivity and a process of hydrolysis were determined spectrophotometrically by Somogyi-Nelson method. Final yields of glucose from hydrolysis were determined by HPLC method. Enzymatic hydrolysis was followed by fermentation, which was carried out in two ways, namely by adjusting the pH of the hydrolyzate to pH 5, and without pH adjustment. During the fermentation was carried out sampling in which was determined the content of glucose, glycerol and ethanol by HPLC method. The yeasts Saccharomyces cerevisiae were used for the fermentation which was performed at 30 °C. High yield of glucose was achieved by hydrolysis in two steps (70,28 gl-1), but for the fermentation was used mixed hydrolysis (second method of mixed hydrolysis) with yield 67,94 gl-1. High ethanol yield was achieved during fermentation without treatment pH, namely 31,5 gl-1.
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Pretreatment of polysaccharide waste materials to maximize of hydrolysis products
Myslivcová, Pavla ; Trachtová, Štěpánka (referee) ; Babák, Libor (advisor)
This thesis deals with study of the polysacharidic waste material pretreatment in order to maximize the hydrolysis products. It has been chosen a pastry as a waste material, specifically rolls and bread. Pastry was pretreated by milling and 15% w/v suspension of pastry in the water was prepared. Then several types of hydrolysis were performed with suspensions. Products of hydrolysis were characterized by spectrophotometric method of Somogyi-Nelson and efficiency of hydrolysis was compared. Three acids (H2SO4, HNO3, HCl) and two alkalis (NaOH, KOH) in three various concentration were used for the chemical hydrolysis. Microwave and ultrasound were chosen for the physical hydrolysis.
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Moučné speciály pro domácí pekárny
Domes, Roman
The goal of my bachelor thesis called "Special flours for home breadmakers" was to complete a literary overview from relevant sources. The first part of my thesis contains information about general characteristic of cereals and their role in human nutrition. Further the thesis deals with basic information about flour technologies and individual raw materials for bakery production. In the sexond half of my thesis, i focused on special flours for breadmakers, their current development and offer in our market. In this section, I investigated particular flour mixes targeted to specific customers and documents the preparation of certain randomly selected products. In conclusion, i concentrated on breadmakers, specifically their market offer and the description of the principles and procedures for their use.
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