ABSTRACT
The aim of the present study was to investigate the effect of selenium yeast and phytobiotic on the storage capacity, selected quality parameters of meat and content of selenium in muscles obtained from broilers. In the experiment, 1440 male broiler chickens (Ross 308) were randomly assigned to four research groups: group received no additive (G1), group received a supplement of 0.3 mg Se (as sodium selenite)/kg of feed mixture (G2), group received 0.2 g phytobiotic and 0.3 mg Se as 0.1 g selenium yeast per 1 kg of feed mixture (G3) and group received 0.3 mg Se as 0.1 g selenium yeast per 1 kg of feed mixture (G4). Measurement of pH, determination of water retention capacity, degree of advancement of oxidative changes and selenium content in muscles were performed. Samples of chickens' breast and thigh muscles were microbiologically analyzed. The additives significantly influenced the level of oxidation in muscles and the incorporation of selenium. The meat of chickens receiving organic selenium was characterized by significantly lower dynamics of oxidative changes. The studies carried out showed that selenium in organic form had better absorption.
ABSTRACT
Herbal formulations have been used in ethnomedicine and pharmacy around the world for thousands of years. One of them is Jerusalem Balsam (JB), which came into use in the seventeenth century. Today, people still produce and use it regularly as prophylactic supplement. JB has been widely used in Europe since the nineteenth century, as a remedy possessing antibacterial, antifungal and anti-inflammatory activities. The composition of the product was not known, although possible formulations were reported. In this study the original sample, which dated back to 1870, was investigated for chemical composition and cytotoxic activity. The obtained results were compared with results from more recently produced samples. Several tests were carried out, namely GC-MS, UPLC-PDA-Q-TOF-MS and MTT. Only the 150-year old sample showed a significant cytotoxic activity on cancer cell lines. At a concentration of 125 µg/mL after 72 h of incubation, the original sample inhibited almost 90% of cell metabolic activity, while contemporary samples showed none or little activity. None of the tested samples showed a significant impact on normal cells. These results may be attributed to the activities of benzoic acid and its derivatives, cinnamic acid derivatives, vanillin, group of sesquiterpenes and cembrene.