The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
A study conducted on 24 fatteners was undertaken to determine the effect of the level of feeding pigs in the first period of fattening on fatty acids profile of their muscles. In animals with body weight (b.w.) of 23 kg, the content of crude fat was similar in all muscles examined. In a lipid fraction of M. longissimus thoracis, M. semimembranosus and heart muscle of pigs with b.w. of 23 kg and 60...
Glutamine deamidating enzyme from Penicillium politans NRC510 catalyzed deamidation of glutamine to glutamic acid and ammonia. The enzyme was partially purified by a simple method of heating and Sephadex G-100 gel filtration. This procedure yields the partially purified enzyme with a 25% recovery of the activity in crude extracts. Specific activity of this partially purified enzyme is 133 U/mg. The...
The aim of this study was to assess concentrations of essential and toxic metals in fish meat from north-west Poland. Selected metals (Al, Fe, Mn, Zn, Cu, Pb, Cd, Hg, Ni, Mg, Cr, V, Li, K, Ca, Na) were determined in the muscle tissue of freshwater fish species: pike, bream, perch and common carp, harvested from natural waters of West Pomerania, Poland. Levels of Cd and Pb were determined by Graphite...
The aim of this study was to assess the chemical composition of corn crackers with a 10% and 20% addition of dried shiitake and to estimate the sorption of Fe and Zn by these products under conditions of pH values similar to those found in the human alimentary tract. Contents of protein, fat and ash were determined using standard analytical methods. Soluble and insoluble fractions of dietary fiber...
The study was aimed at determining the effect of various doses of tocopherol acetate on the oxidative stress induced by physical exercise in rats. The experiment was conducted on growing Wistar male rats. The oxidative stress was induced by running on a treadmill with tape movement velocity of 20 m/min for 15 min for the period of 10 days. After that period, samples of rats serum were determined for...
Investigations were conducted for fat content and fatty acids composition of six of the most frequently fished species inhabiting the Vistula Lagoon (bream, roach, perch, pikeperch, herring, and eel). Fat content of the fish examined ranged from 0.39 to 29.77%, whereas fatty acids composition range was as follows: saturated fatty acids (SFA) 25.1–29.4%, monounsaturated fatty acids (MUFA) 22.3–52.2%,...
A potential source of potato dietary fibre (PDF) is potato pulp, a waste product of the starch industry. The refined potato pulp (PDF preparation) contains 50-60% of DF, 10-20% of starch and 6% of protein (on dry matter basis). PDF consists of about 55% of insoluble (mainly cellulose) and 45% of soluble (mainly pectins) fraction; has low viscosity and relatively high water-holding capacity but lower...
An appropriate level of physical activity is an important element of a strategy for achieving and maintaining the correct body mass, which is a key factor related to reducing health-related risks. This study was aimed at evaluating body mass and body composition as well as selected biochemical indexes in women in relation to their physical activity in the context of health risks. The study included...
Among persistent organic pollutants that occur in the environment and in food, a significant group is represented by the residues of highly toxic chlorinated pesticides, used for decades mainly in plant protection. As some of the compounds have half-lives measured in years, or even decades, they can accumulate in water and bottom sediments. In consequence, they can penetrate into aquatic organisms...
The experiment described was aimed at following effects of diet alteration involving replacement of whole cereal grains with wheat flour and sucrose, and supplementation of such a diet with selected B-group vitamins on contents of non-enzymatic components of antioxidation defence as well as on contents of malonic dialdehyde (MDA) regarded as a marker of free radical-related processes in the blood...
The aim of this study was to determine the proximate composition, contents of individual fractions of dietary fiber and selected physicochemical properties of a fiber concentrate produced from corncobs. Dried and ground corncobs exhibited high total dietary fiber content (about 90 g/100 g d.m.), including a high share of hemicelluloses and cellulose. The analysed preparation exhibited also relatively...
The paper presents identification methods of foodstuffs, according to the requirements of the traceability system given in the respective standard PN-EN ISO 22005:2007, based on the traceability of “Herring fillets in tomato sauce” as the final product and peas as a raw material used in fish processing. Identification consisted in following the processing history of a selected product and raw material...
The texture, rheological properties and myofibre characteristics of semimembranosus muscles of four different species: wild boar (Sus scrofa), deer (Cervus elaphus), roe-deer (Capreolus capreolus), and fallow-deer (Dama dama) shot at 18 months during winter were compared. The muscle texture and rheological properties were determined with the TPA and relaxation tests, performed with an Instron 1140...
The aim of this study was to asses the influence of a conventional low-protein diet and diet supplemented with Ketosteril® on growth hormone and insulin-like growth factor-1 in patients with chronic kidney disease (CKD). Dietary intake of selected nutrients, anthropometric, hormonal and metabolic parameters were analysed before and after 6-month dietary treatment. We conclude that in CKD the response...
Studies were conducted on a group of 125 girls aged 13-15 years. Food preferences were determined in relation to 77 products, along with habitual eating frequency and amounts of consumed products, with individual correlations analysed for all products separately and joint correlations for 6 assortment groups. A significant interdependence between food preferences and habitual frequency of consumption...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.