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Astaxanthin Production by Newly Isolated Rhodosporidium toruloides: Optimization of Medium Compositions by Response Surface Methodology

Tuyet Nhung TRAN, Quang-Vinh TRAN, Hao Thanh HUYNH, Nghia-Son HOANG, Hoang Chinh NGUYEN, Dai-Nghiep NGO

Abstract


Astaxanthin is a valuable carotenoid pigment, which has been extensively used in various industries. In this study, Rhodosporidium toruloides was first used as a new microbial source for producing natural astaxanthin. Various carbon, nitrogen, and mineral sources were evaluated for their effect on astaxanthin production of R. toruloides. Response surface methodology (RSM) was then used to optimize the medium compositions for maximizing the astaxanthin concentration. Among the examined nutrients, glucose, peptone, and KH2PO4 were the most efficient carbon, nitrogen, and mineral source for astaxanthin production, respectively. Through RSM, a maximum astaxanthin concentration of 927.11 µg l-1 was obtained by using Hansen broth containing 83.74 g l-1 glucose, 20.01 g l-1 peptone, and 6.19 g l-1 KH2PO4. This study suggested that R. toruloides is a promising candidate to produce natural astaxanthin.

 

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In press - Online First. Article has been peer reviewed, accepted for publication and published online without pagination. It will receive pagination when the issue will be ready for publishing as a complete number (Volume 47, Issue 1, 2019). The article is searchable and citable by Digital Object Identifier (DOI). DOI number will become active after the article will be included in the complete issue.

 

 

Keywords


astaxanthin production; Rhodosporidium toruloides; yeast; medium composition; response surface methodology

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References


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DOI: http://dx.doi.org/10.15835/nbha47111361

June 1, 2018: Notulae Botanicae Horti Agrobotanici Cluj-Napoca in Scopus – Elsevier CiteScore 2017=0.78, Horticulture; Agronomy and Crop Science; Plant Science


 
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