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Chia has been known for over 5,500 years. Chia seeds were one of the most important components of the diet of Mayas and Aztecs. The chemical composition and technological properties of chia give the plant a high nutritional potential. Chia is a good source of polyunsaturated fatty acids: omega-3 and omega-6, soluble dietary fiber. It also contains appreciable amount of proteins and phytochemicals. Nutritional value of chia is the reason why it is used in prophylaxis of several non-infectious diseases such as obesity, hypertension, cardiovascular diseases (CVDs), cancer and diabetes. Nutritional and therapeutic aspects of chia are currently being researched by many scientific centres. The aim of this article is to present the nutritional and therapeutic values of chia.
Sweetleaf (Stevia rebaudiana Bertoni), currently investigated by many researchers, has been known and used for more than a thousand years indigenous tribes of South America, who called it “kaa-hee” (“sweet herb”). Thanks to its chemical composition and processability sweetleaf may be an alternative for synthetic sweeteners. Nutritional and health-promoting aspects of Stevia rebaudiana are presently being studied in many research centres. The aim of this study is to present nutritional and health-promoting value of the still-little known sweetleaf.
Background. The widespread and increasing occurrence of obesity, hypertension and associated disease has necessitated serial testing in order that risks of contracting such conditions become minimised through appropriate therapy and prevention. Many studies report that nutritional factors significantly affect the aetiology of hypertension and obesity that include mineral uptake. There are only a few studies however which are focused on the body’s changing mineral content during pharmaco-therapeutic treatment. Objectives. To determine concentrations of minerals in the hair and urine of hypertensive patients in conjunction with assessing their nutrition. Material and Methods. Subjects were 17 patients presenting with essential hypertension and 18 healthy controls. Atomic absorption spectrometry (AAS) was used to measure Mg, Ca, Fe, Zn and Cu in the hair and urine on a Zeiss AAS-3 instrument. Dietary mineral intakes were assessed by interview over 24 hours prior to the analysis. Results. The hypertensive group had significantly lower urine concentrations of Ca and Mg as well as Mg and Zn in hair. Urinary zinc excretion was significantly increased in this group compared to controls, but dietary intakes of Cu were reduced. The dietary mineral intakes were found to be unrelated to the concentrations of such minerals in the hair and urine. Conclusions. Compared to controls, excretion of Ca and Mg were reduced in hypertensive subjects, whereas Zn excretion was higher, and Mg and Zn were relatively low in the hair. Daily dietary intakes of Cu were also reduced in the hypertensive.
Background. An adequately balanced daily food rations (DFR) providing the organism with a sufficient amount of energy and nutrients, including minerals, is particularly important in infanthood and early childhood due to the child’s intensive physical, intellectual and motoric development. Objective. The aim of this study was to evaluation the supply of energy, nutrients and vitamins in daily food rations of children fed at home and in nursery schools. Material and Methods. 75 children aged 1-4 years were the research subjects. They were divided into three age subgroups: 12-24-month-olds, 25-36-month-olds and 37-48-month-olds. The daily consumption of energy and vitamins was assessed by means of a 7-day 24-hour nutritional interview made with current note taking and by means of a computer database (Dietetyk 2). Significant differences in the content of energy, nutrients and vitamins in the DFR were investigated using the two-way analysis of variance (Statistica 10.0) at significance level p≤0.05. Results. Neither the children’s sex nor age had influence on the intake of energy and macronutrients. Apart from the amount of energy (68-101.8% RDA) and proteins (183-288% RDA) these values were generally normal, but they had influence on the content of vitamins in the DFR. The DFR was characterised by generally excessive content of vitamins A, B2, B6 and B12. However, in comparison with the RDA the intake was significantly higher in the DFR of the youngest children (12-24 months old). In the group aged 37-48 months there were significantly higher values in the intake of vitamins B2 (317% vs 137% RDA) and B6 (334% vs 147% RDA). On the other hand, in comparison with the RDA, the DFR provided too small amounts of vitamins D, E, folates and vitamin C. The DFR of the youngest children (12-24 months old) contained significantly greater amounts of vitamins: D (41.3% vs 16.2% RDA), E (83.6% vs 63.5% RDA) and C (102.0% vs 48.6% RDA), as compared with the children aged 37-48 months. Only the content of vitamins B1 and PP in the children’s DFR was similar or slightly greater than the RDA. Conclusions. The intake of energy in the DFR of the children aged 1-4 years was generally comparable, but in the children aged 37-48 months it did not satisfy the daily demand. In all the age groups under study the supply of macronutrients satisfied about 100% of the demand, whereas the supply of protein and sucrose was excessive. The children aged 12-24 months consumed more vitamins D, E, B2, PP, B6, B12, C than the children aged 37-48 months. The supply of vitamins D, E, C and folates was too low, whereas the consumption of vitamins: B2, B6 and B12 exceeded the recommended daily intake.
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