Extraction and Estimation of Î²-carotene Pigment from Some Species of The Genus Rhodotorula and Study The Ability to Increas Their Production By Mutagenesis. IHJPAS [Internet]. 2017 Mar. 8 [cited 2024 May 2];29(1). Available from: https://jih.uobaghdad.edu.iq/index.php/j/article/view/67