Authors:M. R. Serafini, P. P. Menezes, L. P. Costa, C. M. Lima, L. J. Quintans Jr, J. C. Cardoso, J. R. Matos, J. L. Soares-Sobrinho, S. Grangeiro Jr, P. S. Nunes, L. R. Bonjadim, and A. A. S. Araújo
In this investigation, the study of inclusion complexes formation between p-cymene and β-cyclodextrin using the methods of physical mixture, paste (PC) and slurry (SC), was evaluated. The results of DSC and TG/DTG showed that the products prepared by PC and SC methods were able to incorporate greater amounts of p-cymene, as evidenced by the weight loss of 7.15 and 3.97%, respectively, which occurred between 120 and 270 °C. SEM images showed decreased size of the household, especially in the SC product. The absorption bands in the IR spectrum, characteristic of p-cymene, were also identified in the preparations, indicating the presence of the compound in the complex.
Authors:M. Dudáš, P. Eliáš jun., D. R. Letz, Z. Bártová, and V. Kolarčik
The distribution of Sonchus palustris in Slovakia was studied using herbarium specimens and literary sources. The herbarium studies, supplemented with targeted field search in the years 2015–2018, revealed 61 new localities and confirmed many other older locations. The species has been recorded in 19 phytogeographical districts and sub-districts of Slovakia. Most of the records are concentrated in the Podunajská nížina lowland in SW Slovakia and in the Ipel'sko-rimavská brázda region in southern Slovakia. Our results showed that the species is relatively common in different types of wetlands and its re-evaluation in the recent version of the Slovak red list is not needed. Chromosome number data for two new populations in eastern Slovakia (both 2n = 18) were counted. The distribution map is given.