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:: Volume 21, Issue 1 (2022) ::
IJFS 2022, 21 Back to browse issues page
Research Article: Optimization of β-carotene production by an indigenous isolate of Dunaliella salina under salinity-gradient stress
F. Salehipour-Bavarsad1 , H. Riahi *2 , M.A. Hejazi3 , Z. Shariatmadari4
1- Faculty of Life Science and Biotechnology, Shahid Beheshti University, Tehran, Iran.
2- Faculty of Life science and Biotechnology, Shahid Beheshti University, Tehran, Iran , h-riahi@sbu.ac.ir
3- Department of Food Biotechnology, Branch for Northwest and West Region, Agricultural Biotechnology Research Institute of Iran, Agricultural Research, Education and Extension Organization (AREEO), Tabriz, Iran.
4- Faculty of Life science and Biotechnology, Shahid Beheshti University, Tehran, Iran
Abstract:   (1893 Views)
Dunaliella salina has significant industrial aspects, especially for the accumulation of high amounts of β-carotene, which is the main natural source in aquatic food webs. The first step of commercial production is accurate identification owing to phenotypic plasticity in the genus Dunaliella and lack of rigid cell wall. In this study, D. salina was isolated from Sirjan Kafe Namak of Iran when algal bloom had occurred and then identified based on morphological and molecular properties. Morphological characteristics bore a close resemblance to the species D. salina, including cell size, cup-shaped chloroplast, large basal pyrenoid, and stigma position. Moreover, phylogenetic analysis of internal transcribed spacer (ITS) region (~700 bp) corroborated morphological features by confirming the isolate at the species level. Under five different salinity concentrations, this strain could accumulate β-carotene in the range of 0.51-2.78 μg/mL with optimum growth at 2 M NaCl comparable with reported data for D. salina.
Keywords: Dunaliella, Internal transcribed spacer, Salinity tolerance, Sirjan, Iran
Full-Text [PDF 856 kb]   (2242 Downloads)    
Type of Study: Orginal research papers | Subject: Biology & physiology
ePublished: 2022/01/20
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Salehipour-Bavarsad F, Riahi H, Hejazi M, Shariatmadari Z. Research Article: Optimization of β-carotene production by an indigenous isolate of Dunaliella salina under salinity-gradient stress. IJFS 2022; 21 (1) :235-246
URL: http://jifro.ir/article-1-4574-en.html


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Volume 21, Issue 1 (2022) Back to browse issues page
Iranian Journal of Fisheries Sciences Iranian Journal of Fisheries Sciences
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