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Specifičnost cyanobakteriální mikroflóry v Antarktidě
Komárek, Jiří ; Komárek, Ondřej
The cyanobacterial microflora of Antarctica is considered to be mainly secondary. The easy transport of diaspores by wind and human activities (particularly in the last decades) was supported by different authors. The continental input of new cyanobacterial spores to Antarctica surely exists, but cannot explain the special stable diversity of Antarctic cyanobacteria. Our studies indicate the specificity and stability of Antarctic cyanobacterial communities. In Antarctica, there exists a wide spectrum of cyanobacterial morpho- and genotypes, which form special communities every year with dominating adapted species, among which numerous Antarctic endemits exist.
Changes in the Fatty Acid Composition during Enzymatic Hydrolysis of Vegetable Oil
Sovová, Helena ; Zarevúcka, Marie
Hydrolysis of oil in a continuous-flow reactor packed with immobilised enzyme was integrated with oil extraction from blackcurrant seeds, using as solvent supercritical carbon dioxide at 40 oC and 15-28 MPa. The hydrolysate was fractionated into free fatty acids, combined fraction of di- and monoacylglycerols, and the unreacted oil (tricylglycerols). As a result of non-homogeneous distribution of some fatty acids at sn-positions in triacylglycerols and the action of 1,3-specific lipase Lipozyme, free fatty acids were enriched in palmitic, stearic, and alpha-linolenic acids, while gamma-linolenic and stearidonic acids were more concentrated in di- and monoacylglycerols.

National Repository of Grey Literature : 22 records found   beginprevious21 - 22  jump to record:
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