Effects of different levels of urea as nitrogen source on chemical composi-tion of marine microalgae nannochloropsis oculata
Author
Source
Al-Mukhtar Journal of Sciences
Issue
Vol. 36, Issue 1 (31 Mar. 2021), pp.1-11, 11 p.
Publisher
Publication Date
2021-03-31
Country of Publication
Libya
No. of Pages
11
Main Subjects
Earth Sciences, Water and Environment
Abstract EN
Microalgae breeding media must be cost-effective, enable high growth, meet exact re-quirements and be readily available.
the effect of different levels of urea [25, 50, 75, and 100%] in the growth medium on the biochemical constituents (protein, carbohydrates, lipids, fatty acids, and amino acids) of the nannochloropsis oculata, was assessed compared to the f/2 guillard standard medium.
the obtained results revealed that the chemical constituents of n.
oculata were influenced by the different levels of urea.
the highest total protein was obtained by a4 medium (100% urea) (26.44%) and a3 medium (75% urea) (25.84%).
the maximum percentage of essential amino acids (eaa) (51.54%) was obtained by using the a4 medium (100% urea) as compared to the control (100% f/2).
the highest total lipid content was achieved by using the a1 medium (25% urea) pro-ducing (17.33 %) and a4 medium (100% urea) (16.98%).
accordingly, the highest total saturated fatty acids percentage (TSFA) of N.
oculata was recorded by the a3 medium.
in conclusion, the addition of urea is an excellent policy to increase chemical composition and lipid accumulation.
the present study recommended taming results for aquaculture feeding through using the proposed a1 medium as a lipid promoter or a4 medium as a protein promoter.
American Psychological Association (APA)
Abu Ghararah, Ali Mahmud. 2021. Effects of different levels of urea as nitrogen source on chemical composi-tion of marine microalgae nannochloropsis oculata. Al-Mukhtar Journal of Sciences،Vol. 36, no. 1, pp.1-11.
https://search.emarefa.net/detail/BIM-1324760
Modern Language Association (MLA)
Abu Ghararah, Ali Mahmud. Effects of different levels of urea as nitrogen source on chemical composi-tion of marine microalgae nannochloropsis oculata. Al-Mukhtar Journal of Sciences Vol. 36, no. 1 (2021), pp.1-11.
https://search.emarefa.net/detail/BIM-1324760
American Medical Association (AMA)
Abu Ghararah, Ali Mahmud. Effects of different levels of urea as nitrogen source on chemical composi-tion of marine microalgae nannochloropsis oculata. Al-Mukhtar Journal of Sciences. 2021. Vol. 36, no. 1, pp.1-11.
https://search.emarefa.net/detail/BIM-1324760
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 7-10.
Record ID
BIM-1324760