Katarzyna Janda

The Fluoride Content of Yerba Mate Depending on the Country of Origin and the Conditions of the Infusion

There are many reports of the positive effect of yerba mate on the human body. Elemental composition analysis of yerba mate revealed the presence of many microelements and macroelements, but there is no literature data referencing the content and the effect of the method of preparing the yerba mate infusion on the amount of released fluoride and thus the amount of this element supplied to the human body. Therefore, in the traditional way (cold and hot), we prepared infusions of yerba mate from different countries and determined in samples content of fluoride using potentiometric method. Hot infusions resulted in statistically significant (p = 0.03) increases in the amount of fluoride released from the dried material to the water, compared to brewing with water at room temperature. The successive refills of hot water also resulted in a release of the same amount of fluoride, although smaller than the infusion with water at room temperature (at the third refill, it was statistically significantly smaller at p = 0.003). With an increase in the number of hot water refills, the amount of fluoride released from the sample portion significantly decreased. Similar results were recorded when analyzing samples depending on the country of origin. The amount of fluoride released into the water differed statistically significantly depending on the country of origin. The most fluoride was determined in the infusions of yerba mate from Argentina and the least in infusions from Paraguay.

Badania składu ilościowego i jakościowego grzybów zasiedlających nasiona soi (Glycine max L.)

Introduction: The aim of study was to analyse the qualitative and quantitative composition of fungi in soybeans on RBCA, YpSs, and DG18 culture media at 25, 37 and 45°C. Material and methods: The analysis included 15 samples of soybeans. The highest number of mould species (23) were isolated on RBCA at 25°C, followed by xerophilic species (20) on DG18 at 25°C, and mesophilic (13) and thermophilic species (4) on YpSs medium at 37° and 45°C, respectively. Ninety-five strains belonging to 40 species were isolated from soybean samples. The predominant species were Penicillium chrysogenum and Eurotium herbariorum. Conclusion: This study revealed new species of mycobiota not previously isolated from soybeans.

Stan wiedzy oraz występowanie trądziku (Acne vulgaris) wśród młodzieży w Szczecinie

Introduction: Acne vulgaris is a chronic disease associated with dysfunction of the sebaceous glands and the hair follicles. The disorder affects approximately 80% of the Polish youth population and has become an important clinical issue. The aim of this study was to examine the state of knowledge about acne among youth in Szczecin, and to attempt to identify the main causes of the disease. Material and methods: The study was conducted among 100 young people in Szczecin aged 12 to 25 years. A validated questionnaire was used for the research. Results: The questionnaire analysis showed that acne affects 60% of the surveyed young citizens of Szczecin. The study shows that the prevalence of acne depends on the type of skin, tendency to have skin imperfections, and the age of the respondents. Knowledge of skin care, factors affecting the occurrence of acne, and treatments used depend on the age of respondents. The greatest awareness was found among older students and the smallest among secondary school students. Conclusions: knowledge about prevention, treatment and skin care is still insufficient, and therefore there is a great need to educate and raise the awareness of young people.INTRODUCTION Acne vulgaris is a chronic disease associated with dysfunction of the sebaceous glands and the hair follicles. The disorder affects approximately 80% of the Polish youth population and has become an important clinical issue. The aim of this study was to examine the state of knowledge about acne among youth in Szczecin, and to attempt to identify the main causes of the disease. MATERIAL AND METHODS The study was conducted among 100 young people in Szczecin aged 12 to 25 years. A validated questionnaire was used for the research. RESULTS The questionnaire analysis showed that acne affects 60% of the surveyed young citizens of Szczecin. The study shows that the prevalence of acne depends on the type of skin, tendency to have skin imperfections, and the age of the respondents. Knowledge of skin care, factors affecting the occurrence of acne, and treatments used depend on the age of respondents. The greatest awareness was found among older students and the smallest among secondary school students. CONCLUSIONS knowledge about prevention, treatment and skin care is still insufficient, and therefore there is a great need to educate and raise the awareness of young people.

Badania składu ilościowego i jakościowego grzybów zasiedlających nasiona słonecznika (Helianthus annus L.)

INTRODUCTION The aim of study was to estimate the qualitative and quantitative composition of moulds colonizing sunflower seeds on RBCA, YpSs, DG18 media at 25, 37, and 45°C. MATERIAL Twenty samples of sunflower seeds (not roasted and not salted) were used for the analysis. The highest number of moulds were xerophilic species isolated on DG18 at 25°C (33), followed by mesophilic species (29) on RBCA medium at 25°C, and mesophilic (22) and thermophilic species (10) on YpSs medium at 37, and 45°C, respectively. Eurotium herbariorum was isolated from all samples. A total of 287 strains belonging to 52 mould species were isolated from sunflower seeds. CONCLUSION The study revealed new species not previously isolated from sunflower seeds mycobiota.Introduction: The aim of study was to estimate the qualitative and quantitative composition of moulds colonizing sunflower seeds on RBCA, YpSs, DG18 media at 25, 37, and 45°C. Material: Twenty samples of sunflower seeds (not roasted and not salted) were used for the analysis. The highest number of moulds were xerophilic species isolated on DG18 at 25°C (33), followed by mesophilic species (29) on RBCA medium at 25°C, and mesophilic (22) and thermophilic species (10) on YpSs medium at 37° and 45°C, respectively. Eurotium herbariorum was isolated from all samples. A total of 287 strains belonging to 52 mould species were isolated from sunflower seeds. Conclusion: The study revealed new species not previously isolated from sunflower seeds mycobiota.