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Serum lipid abnormality is a risk factor for cardiovascular disease. The aim of this research was to study the effect of olive oil with low- -calorie diet on blood lipids in hyperlipidemic patients. The study was done on fi fty eight hyperlipidemic patients of both sexes and age range of 25–65 years. The patients received low-calorie diet based on 1400 kcal energy per day for 4 weeks, containing 32%...
Garlic (Allium sativum) is a plant known for its antimicrobial, antithrombotic and antiatherosclerotic properties. Those features are attributed to thiosulfi nates, compounds formed in an enzymatic reaction occurring during garlic cloves crashing. A spectrophotometric method for the determination of thiosulfi nate concentration in garlic extracts and supplements was proposed. It is based on reactions...
The antioxidant capacity, phenolic acids profi le, acrylamide contents and sensory quality of ginger cakes formulated on dark and brown rye fl ours according to the traditional formula (type 1 and type 2), and on the mixed white wheat fl our with dark and brown rye fl ours due to the currently used formulation (type 3 and type 4), were studied. The antioxidant capacity of the ginger batters and cakes...
Water deserves a major attention by researchers dealing with biological systems and related materials, like food, since it is ubiquitous and can be used like a “native” probe to garner information about the hosting system, provided it may be freely displaced across. Its thermodynamic potential, namely, the water activity, aW, is related to that of the other compounds of the system considered via the...
Ber is a tropical fruit which grows from the tree species, Ziziphus mauritiana Lamk. The pericarp of this fruit is consumed either fresh or dried while its seeds are usually discarded as waste. The present study was undertaken to evaluate the antioxidant activity and phenolic content of the fruit, and to evaluate if any potential value-added phytochemicals can be extracted from seed waste. The edible...
The aim of the present study was to determine the profi le of fatty acids in muscle lipids of freshwater fi sh: carp (Cyprinus carpio L.), rainbow trout (Oncorhynchus mykiss Walb.), bream (Abramis brama L.) and tench (Tinca tinca L.) from markets of Olsztyn (north-eastern Poland). Separation and identifi cation of fatty acids were made using gas chromatography. The content of some fatty acids varied...
The aim of this study was do determine changes in concentrations of indicatory PCB congeners (IUPAC numbers: 28, 52, 101, 118, 153, 138, 180) during industrial hot smoking of mackerel (Scomber scombrus L.) and herring (Clupea harengus L.) slices and cold smoking of mackerel slices. PCB content in raw mackerel slices averaged from 1.32±0.29 ng/g wet w. for PCB 52 to 4.66±0.72 ng/g wet w. for PCB 153...
The study analysed the stability of polyphenols present in extracts isolated from cocoa, green tea and strawberries in Hank’s Balanced Salt Solution buffers. The extracts were incubated under conditions commonly used for intestinal absorption experiments with human epithelial cells. The polyphenols were analysed with HPLC-DAD-FLD-MS method. The concentrations of most of the polyphenols monitored changed...
The objective of this study was to investigate free amino acids composition of Polish honeys with different botanical origin. Honeys (n=18) with dominant buckwheat, raspberry, acacia, heather and goldenrod pollen, and honeydew honey were analysed. For determination of free amino acids liquid chromatography methods were applied. Identifi cation of 25 free amino acids was performed. Considerable variation...
Flaxseed is a rich source of dietary fi bers and lignans. Uncontrolled diabetes may induce complication represented by dyslipidemia, high oxidative stress and kidney dysfunction. In the present research the benefi cial effect of two months consumption of bread supplemented with defatted fl axseeds (DFB) together with dietary regimen was evaluated in normal and type 2 diabetic patients. Protective...
Epidemiological studies have suggested that the adherence to Mediterranean diet (in Greek Μεσογειακή Διατροφή, Mesogiaki diatrofi ) is correlated to a low risk of cardiovascular diseases. Mediterranean diet offers a nutritional model enriched by diverse cultures which, over centuries, has essentially maintained the same structure. In general, this diet is rich in plant foods (fruit, vegetables, whole...
Soft cheese fortifi ed with ginger extract as a functional dairy food was evaluated. Buffalo’s milk retentate was divided into three equal portions. One batch had no ginger extract as a control. The latter batches were fortifi ed with extract at the rate of 1.5 or 3.0 g/kg. All batches were salted with 4% NaCl/water phase. The resultant cheese samples were divided into 2 parts; one was separately...
Methylxanthines such as caffeine, theobromine and theophylline are intensively consumed as food components by large proportion of human population all over the world. This class of compounds show various biological activities and have been found to act as broad specifi city inhibitors towards numerous enzymes. However, their action on digestive enzymes have not been yet investigated. In this paper...
The need for analytical methods enabling determining trace metals concentration in herbal medicinal products and dietary supplements has increased in recent years due to the globalisation of international market and also due to the risk of using herbs contaminated by heavy metals. To this end, an analytical method was developed and validated for the accurate determination of trace elements (As, Cd,...
A study was undertaken to evaluate changes in microbial populations of nonstarter lactic acid bacteria (NSLAB), yeast and starter lactic acid bacteria (SLAB) in Gouda cheese in two independent chambers during the ripening process up to 12 weeks. No differences in populations of the tested group of microorganisms were observed at 4, 8 and 12 weeks in both the dairy and dairy-independent chambers. Populations...
Quality of roe deer venison was evaluated based on chemical composition, technological parameters, pH values and colour. Loin (M. longissimus dorsi) and leg (M. gluteus medius) samples were taken from 14 males and 11 females of roe deer (Capreolus capreolus L.). Highly signifi cant differences between samples from the two parts of body were found only in pH (120 h post mortem). Highly signifi cant...
The aim of this study was to determine the properties of single- and double-extruded starch. Single-extruded starch was obtained using a single screw extruder at temperatures of 50–60–70°C, 90–100–120°C and 140–150–170°C, whereas double-extruded starch was obtained after grinding each of the three single-extruded starch samples and their re-extrusion at temperatures of 90–100–120°C and 140–150–170°C...
Four yeast strains: Yarrowia lipolytica PII6a, Candida famata MI1a, C. kefyr PII1b, C. sphaerica FII7a, adjunct cultures for cheese production were preserved by freeze-drying. The effect of process parameters and cryoprotective agents on cell survival and stability of growth characteristics was evaluated. Among three lyophilisation protocols, the process with three-step drying at temperatures of -38°C,...
The aim of the study was to evaluate the possibility of predicting potential epitope sequences and location in allergenic proteins from food using EVALLER program by comparison with experimental epitopes summarised in the BIOPEP database of allergenic proteins. Sequences of experimental epitopes from food allergens, present in the BIOPEP database of allergenic proteins were used in the study. Sequences...
Plant sterols (PS) are bioactive compounds effective in reducing plasma cholesterol. Fatty acid esters of PS have improved solubility and blending properties when utilized in various food products. Naturally occurring α-lipoic acid (LA) and its reduced form dihydrolipoic acid (DHLA) are known for their antioxidant activity. In addition, they have shown an array of health benefi cial properties against...
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