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The research examined green tea ethanol extract, subjected to different purification processes with use of active carbon, bleaching earth, and mixture of acetone, acetic acid, water, with or without earlier hexane treatment. Purified extracts were examined according to total polyphenols content, antioxidant activity in linoleic acid emulsion and antiradical activity in DPPH• radical scavenging method...
The aim of this study was the determination of some factors influence (i.e. the vitality of bacteria cells and the cholesterol concentration) on the ability of selected Lactobacillus sp. to cholesterol uptake during culture in MRS broth. Three Lactobacillus strains (Lb. delbrueckii subsp. bulgaricus, Lb. acidophilus, Lb. casei) isolated from commercial single species lyophilized dairy starter cultures...
According to the Commission Recommendation 20005/108/EC further analyses of 15 genotoxic PAHs (listed by The Scientific Committee on Food) in food are necessary. The objective of this research was to study contamination of canned smoked fish products in oil by these 15 PAHs. The material investigated were canned smoked sprats in oil available in Warsaw agglomeration. Both oils from canned food and...
The aim of the study was to determine the effect of pasteurization and storage conditions of black chokeberry juice concentrate solutions on their antioxidant activity. The study investigated the effect of solution pH (3-5), temperature (10-30°C) and storage time (0-20 days), as well as oxygen availability. Solutions were obtained by diluting concentrate with buffers according to McIlvaine to anthocyanin...
In order to ensure the appropriate food safety and health of consumers, suitable legal requirements and new quality standards are constantly being elaborated. The free trade exchange within the European Union made it necessary to unify food legislation and quality standards within the entire area of the EU. This publication outlines appropriate systems and standards functioning in the food industry...
This paper attempts to find out if the education of female students of a secondary school of catering has had any effect on the improvement of their diets. The research shows that the diets of first-grade students provides the recommended dietary allowance for energy and nutrients to a greater, yet still insufficient extent than the diets of higher grade students. The results of the statistical analysis...
The aim of the work was the estimation of HPLC and GC/MS methods usefulness for the quantitative determination of phenylalanine in low protein cereal products (LPP). LPP products from two different producers (A and B), and related traditional products were investigated. The protein content was analysed with Kiejdahl method and the phenylalanine concentration was measured with high performance liquid...
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