biostudies-literatureSandybayeva SKThis work was funded by the Ministry of Science and Higher Education of the Republic of Ka-zakhstan within the project АР14870171.Science Committee of the Ministry of Science and Higher Education of the Republic of KazakhstanMinistry of Science and Higher Education of the Russian Federation2951https://www.ebi.ac.uk/biostudies/studies/S-EPMC11547633biostudies-literatureUnknown13(21)Cyanobacterial pigments have attracted considerable attention in industry due to their bioactive potential and natural origin. In the present study, the growth dynamics and pigment composition, in terms of chlorophyll <i>a</i>, total carotenoids and phycobiliprotein content, of four cyanobacterial strains isolated from thermal springs, namely <i>Oscillatoria subbrevis</i> CZS 2201, <i>Phormidium ambiguum</i> CZS 2205, <i>Nostoc calcicola</i> TSZ 2203, and <i>Synechococcus</i> sp. CZS 2204, were investigated. The analysis revealed that the maximum quantity of chlorophyll <i>a</i> and total carotenoids was observed in <i>Oscillatoria subbrevis</i> CZS 2201 (26.49 and 3.44 µg mL^-1), followed by <i>Phormidium ambiguum</i> CZS 2205 (18.64 and 2.32 µg mL^-1), whereas a minimPlants (Basel, Switzerland)Isolation, Identification and Pigment Analysis of Novel Cyanobacterial Strains from Thermal Springs.PMC11547633122050400128-1АР14870171AP14870171Allakhverdiev SIKossalbayev BDKopecky JKakimova ABSandybayeva SKBolatkhan KZayadan BKfalseIsolation, Identification and Pigment Analysis of Novel Cyanobacterial Strains from Thermal Springs.Cyanobacterial pigments have attracted considerable attention in industry due to their bioactive potential and natural origin. In the present study, the growth dynamics and pigment composition, in terms of chlorophyll <i>a</i>, total carotenoids and phycobiliprotein content, of four cyanobacterial strains isolated from thermal springs, namely <i>Oscillatoria subbrevis</i> CZS 2201, <i>Phormidium ambiguum</i> CZS 2205, <i>Nostoc calcicola</i> TSZ 2203, and <i>Synechococcus</i> sp. CZS 2204, were investigated. The analysis revealed that the maximum quantity of chlorophyll <i>a</i> and total carotenoids was observed in <i>Oscillatoria subbrevis</i> CZS 2201 (26.49 and 3.44 µg mL^-1), followed by <i>Phormidium ambiguum</i> CZS 2205 (18.64 and 2.32 µg mL^-1), whereas a minim2024-01-01T00:00:00Z2024 Oct2026-07-12T03:14:42.024Z2025-04-06T01:46:33.409ZS-EPMC115476333951986910.3390/plants13212951