Non-aqueous reversed-phase high-performance liquid chromatography (NARP-HPLC) with atmospheric pressure chemical ionization (APCI) was used for separation of triacylglycerols from five strains of haptophyte algae (genera Coccolithophora, Isochrysis, and Prymnesium). This study describes the separation and identification of C18 polyunsaturated triacylglycerols containing stearidonic and octadecapentaenoic fatty acids, including their regioisomers. Salinity affects the proportion of saturated and unsaturated fatty acids. The biosynthesis of C18 polyunsaturated triacylglycerols was found to be very stereospecific and to depend on the salinity of cultivation media, asymmetric regioisomers predominating at low salinity (sn-OpOpSt and/or PoStSt) and symmetric ones at high salinity (sn-OpStOp and or StPoSt).

• MeSH
• Haptophyta chemie   genetika   MeSH
• kyseliny mastné omega-3 chemie   MeSH
• mastné kyseliny analýza   MeSH
• molekulární struktura MeSH
• nenasycené mastné kyseliny chemie   MeSH
• salinita MeSH
• stereoizomerie MeSH
• triglyceridy analýza   MeSH
• vysokoúčinná kapalinová chromatografie MeSH
• Publikační typ
• časopisecké články MeSH
• Geografické názvy
• Německo MeSH

Algae frequently get a bad press. Pond slime is a problem in garden pools, algal blooms can produce toxins that incapacitate or kill animals and humans and even the term seaweed is pejorative - a weed being a plant growing in what humans consider to be the wrong place. Positive aspects of algae are generally less newsworthy - they are the basis of marine food webs, supporting fisheries and charismatic marine megafauna from albatrosses to whales, as well as consuming carbon dioxide and producing oxygen. Here we consider what algae are, their diversity in terms of evolutionary origin, size, shape and life cycles, and their role in the natural environment and in human affairs.

• MeSH
• Apicomplexa genetika   fyziologie   MeSH
• biodiverzita * MeSH
• Chlorophyta klasifikace   genetika   fyziologie   MeSH
• Cryptophyta genetika   fyziologie   MeSH
• Dinoflagellata genetika   fyziologie   MeSH
• Eukaryota klasifikace   genetika   fyziologie   MeSH
• Glaucophyta klasifikace   genetika   fyziologie   MeSH
• Haptophyta genetika   fyziologie   MeSH
• Heterokontophyta genetika   fyziologie   MeSH
• parožnatky genetika   fyziologie   MeSH
• Rhizaria genetika   fyziologie   MeSH
• Rhodophyta klasifikace   genetika   fyziologie   MeSH
• rozmnožování fyziologie   MeSH
• sinice klasifikace   genetika   fyziologie   MeSH
• symbióza fyziologie   MeSH
• Publikační typ
• časopisecké články MeSH