Preferencje help
Widoczny [Schowaj] Abstrakt
Liczba wyników

Znaleziono wyników: 12

Liczba wyników na stronie
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników

Wyniki wyszukiwania

help Sortuj według:

help Ogranicz wyniki do:
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
Inulina jest węglowodanem mającym liczne zastosowania w przemyśle spożywczym. Może pełnić rolę substytutu tłuszczu, śledzika, wypełniacza i dlatego jest dodawana do różnorodnych produktów mleczarskich, cukierniczych i piekarskich. Inulinazy są grupą enzymów hydrolitycznych wytwarzanych przez bakterie, grzyby oraz rośliny wyższe, zdolnych do rozkładu inuliny do fruktozy oraz oligosacharydów. Produkty enzymatycznej hydrolizy inuliny mają właściwości prebiotyczne i są bezpieczne dla diabetyków. Fruktoza wytwarzana z inuliny jest używana przy produkcji soków, napojów, a także alkoholi.
Background. PCOS (polycystic ovary syndrome) is called a pathology of the XX century and affects at least 10-15% women of childbearing age. The therapy involves pharmacotherapy of hormonal imbalance, as well as the change of lifestyle, including the diet. Objective. Performing the quantitative assessment of components of diets of women with PCOS, comparing the results with current dietary standards for Polish people and defining dietary requirements for the patients. Material and Methods. The study was performed on 54 women of childbearing age (average age 26.03± 5.52) with PCOS syndrome diagnosed according to on the Rotterdam criteria. Anthropometric measurements of the patients were made and BMI and WHR calculated. Quantitative assessment of women’s diets was performed based on the analysis of 3-day food diaries and food records taken from the previous 24h with the interview method. The data were introduced to a dietary software DIETA 5.0, calculating the average intake of the energy, nutrients, vitamins, minerals, cholesterol and dietary fibre. The obtained results were compared to Polish dietary guidelines. Results. Examined group was characterized by increased waist circumference (98.71± 13.6 cm) and an average WHR was 0.92± 0.08. An increased average value of BMI was also shown (28.91± 5.54 kg/m2). The patients consumed, on average, 1952.5±472.7 kcal daily, and the risk of insufficient intake of protein was determined in 36.7% of examined women. The highest risk of deficiency in minerals in women with PCOS was related to calcium (634 mg), potassium (3493 mg) and magnesium (250.1 mg), whereas with reference to vitamins deficiency as much as 70% of tested women were at risk of insufficient intake of folic acid, 36.7% of them - vitamin C, and 26.7% - vitamin B12. The average consumption of vitamin D was at the level of 3.4 μg. Test group was characterized by excessive average consumption of total fat (50%), SFA (70.4%) and saccharose (50%). The percentage of people with excessive average intake of cholesterol was at the level of 40.74%. As much as 83.3% patients consumed too low amounts of dietary fibre in their diets (<25g). Conclusions. In diet therapy of women with PCOS there should be higher intake of folic acid, vitamins D and C, cobalamin, dietary fibre and calcium. The consumption of total fats, saturated fatty acids and cholesterol should be reduced, as through facilitating the development of diabetes and cardio-vascular diseases, they affect the dysfunction of ovaries. The diet of some of the patients should be also supplemented by potassium, magnesium and zinc. The introduction of a properly balanced diet should be the key in the treatment of women with PCOS diagnosed according to Rotterdam criteria.
Investigations on the influence of pulsatory electric field (PEF) involve its impact on a wide scope of biological structures and different groups of microorganisms. The field activity is exerted e.g. on each enzymes, cellular organella, and all living organisms (bacteria, fungi, tissues cells of higher organisms). So far, the widest perspectives of practical application appeared in PEF technology to sterilize the food products. At present, another practical use of PEF is to increase the efficiency of transformed genes. Moreover, the influence of PEF on level of synthesis of different metabolites (citric acid, alcohol) is also insufficiently recognized. Undoubtedly a better knowledge on acting and the effects of PEF on various biological processes may offer an important way to improve the efficiency of many metabolites; thus, the further more penetrating research of the question would be necessary.
A total of 24 yeast strains were tested for their capacity to produce ethanol, and of these, 8 were characterized by the best ethanol yields (73.1181.78%). The most active mutant Saccharomyces cerevisiae ER-A, resistant to ethanol stress, was characterized by high resistance to acidic (pH 1.0 and 2.0), oxidative (1 and 2% of H₂O₂), and high temperature (45 and 52°C) stresses. During cultivation under all stress conditions, the mutants showed a considerably increased viability ranging widely from about 1.04 to 3.94-fold in comparison with the parent strain S. cerevisiae ER. At an initial sucrose concentration of 150 g/l in basal medium A containing yeast extract and mineral salts, at 30°C and within 72 h, the most active strain, S. cerevisiae ER-A, reached an ethanol concentration of 80 g/l, ethanol productivity of 1.1 g/l/h, and an ethanol yield (% of theoretical) of 99.13. Those values were significantly higher in comparison with parent strain (ethanol concentration 71 g/l and productivity of 0,99 g/l/h). The present study seems to confirm the high effectiveness of selection of ethanol-resistant yeast strains by adaptation to high ethanol concentrations, for increased ethanol production.
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.