caa a22 4500 47578376X CHVBK 20180406123652.0 cr unu---uuuuu 170329e20001001xx s 000 0 eng 10.1023/A:1008185212724 doi (NATIONALLICENCE)springer-10.1023/A:1008185212724 Secondary carotenoids formation by the green alga Chlorococcum sp [Elektronische Daten] [Bei-Hui Liu, Yuan-Kun Lee] The effects of temperature, pH and oxygen level onsecondary carotenoids (SC) accumulation in Chlorococcum sp. were investigated. The optimaltemperature, pH and oxygen level for the yields ofsecondary carotenoids and astaxanthin were35 °C, pH 8 and 10% (v/v), respectively. Whilethe ratio (R) of products containing hydroxyl group(s) to those containing keto group (s) increased withthe increase of temperature and pH, R value decreasedwith the level of oxygen. These results indicate thathigher temperature and pH favor the introduction ofhydroxyl group to the corresponding substrates,however, under high oxygen level keto group wasrelatively easy to be added compared to the additionof hydroxyl. Kluwer Academic Publishers, 2000 Astaxanthin nationallicence Chlorococcum sp nationallicence secondary carotenoids nationallicence Liu Bei-Hui Department of Microbiology, Faculty of Medicine, The National University of Singapore, 5 Science Drive 2, 117597, Singapore aut Lee Yuan-Kun Department of Microbiology, Faculty of Medicine, The National University of Singapore, 5 Science Drive 2, 117597, Singapore aut Journal of Applied Phycology Kluwer Academic Publishers 12/3-5(2000-10-01), 301-307 0921-8971 12:3-5<301 2000 12 10811 https://doi.org/10.1023/A:1008185212724 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1023/A:1008185212724 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Liu Bei-Hui Department of Microbiology, Faculty of Medicine, The National University of Singapore, 5 Science Drive 2, 117597, Singapore aut NATIONALLICENCE 700 1- Lee Yuan-Kun Department of Microbiology, Faculty of Medicine, The National University of Singapore, 5 Science Drive 2, 117597, Singapore aut NATIONALLICENCE 773 0- Journal of Applied Phycology Kluwer Academic Publishers 12/3-5(2000-10-01), 301-307 0921-8971 12:3-5<301 2000 12 10811 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer