ACCUMULATION OF BETA-CAROTENE IN PURE MICROALGAE, DUNALIELLA SALINA VS. IN THE MIXED CULTURES OF CASPIAN SEA UNDER NITROGEN STARVATION

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GHORBANI AZITA; HOSSEINI MARYAM; EBRAHIMI SIROUS

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Journal: Iranian Journal of Biosystems Engineering Year:2017 | Volume:47 | Issue:4 Page(s): 711-720

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Information Journal Paper

Title

ACCUMULATION OF BETA-CAROTENE IN PURE MICROALGAE, DUNALIELLA SALINA VS. IN THE MIXED CULTURES OF CASPIAN SEA UNDER NITROGEN STARVATION

Author(s)

GHORBANI AZITA | HOSSEINI MARYAM | EBRAHIMI SIROUS | Issue Writer Certificate

Keywords

MICROALGAE DUNALIELLA SALINA

CASPIAN SEA MICROALGAE

BETA CAROTENE

NITROGEN STARVATION STRESS

Abstract

Beta-carotene being a carotenoid is known as the most famous natural pigment. Microalgae are considered as the most important sources of beta-carotene synthesis. Due to the high sterilization cost of a pure culture, in this study, and for the first time, growth, levels of beta-carotene and chlorophyll in CASPIAN SEA MICROALGAE (under nutrient deficiencies' stress) have been assessed, and compared with the pure microalgae of Dunaliella Salina.The initial vs final concentrations of beta-carotene under nitrogen starvation (after 188 hours) amounted 7.5, 14.8 vs 7.0, 3.5 mol Beta-Carotene/g Protein for pure vs mixed cultures, respectively. Under nitrogen starvation the final protein concentration of MICROALGAE DUNALIELLA SALINA increased from 341.8 to 950.1 mg/L. However, for Caspian Sea mixed microalgae the concentration was raised from 357.1 to 1010.0 mg/L. The operating conditions were the same for both samples as follows: pH=7.5, temperature 24-26oC and stirring at 160 rpm. This study demonstrates that the accumulated Beta-carotene in CASPIAN SEA MICROALGAE was comparable to the obtained one from pure microalgae of Dunaliella Salina. Therefore, mixed microalgae culture can be used for Beta-carotene production which is preferable and more economical than sterile system needing processes. Consequently, the possibility of process industrialization would also be enhanced.

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APA: Copy

GHORBANI, AZITA, HOSSEINI, MARYAM, & EBRAHIMI, SIROUS. (2017). ACCUMULATION OF BETA-CAROTENE IN PURE MICROALGAE, DUNALIELLA SALINA VS. IN THE MIXED CULTURES OF CASPIAN SEA UNDER NITROGEN STARVATION. IRANIAN JOURNAL OF BIOSYSTEMS ENGINEERING (IRANIAN JOURNAL OF AGRICULTURAL SCIENCES), 47(4), 711-720. SID. https://sid.ir/paper/684945/en

Vancouver: Copy

GHORBANI AZITA, HOSSEINI MARYAM, EBRAHIMI SIROUS. ACCUMULATION OF BETA-CAROTENE IN PURE MICROALGAE, DUNALIELLA SALINA VS. IN THE MIXED CULTURES OF CASPIAN SEA UNDER NITROGEN STARVATION. IRANIAN JOURNAL OF BIOSYSTEMS ENGINEERING (IRANIAN JOURNAL OF AGRICULTURAL SCIENCES)[Internet]. 2017;47(4):711-720. Available from: https://sid.ir/paper/684945/en

IEEE: Copy

AZITA GHORBANI, MARYAM HOSSEINI, and SIROUS EBRAHIMI, “ACCUMULATION OF BETA-CAROTENE IN PURE MICROALGAE, DUNALIELLA SALINA VS. IN THE MIXED CULTURES OF CASPIAN SEA UNDER NITROGEN STARVATION,” IRANIAN JOURNAL OF BIOSYSTEMS ENGINEERING (IRANIAN JOURNAL OF AGRICULTURAL SCIENCES), vol. 47, no. 4, pp. 711–720, 2017, [Online]. Available: https://sid.ir/paper/684945/en

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