Effects of different salinities and pH on the growth and proximate composition of Nannochloropsis sp. and Tetraselmis sp. isolated from South China Sea cultured under control and natural condition

Khatoon, Helena; Rahman, Norazira Abdu; Banerjee, Sanjoy; Harun, Nazurah; Suleiman, Siti Suhada; Zakaria, Nur Hazwani; Lananan, Fathurrahman; Hamid, Siti Hajar Abdul; Endut, Azizah

doi:10.1016/j.ibiod.2014.06.022

Cited by 99 publications

(62 citation statements)

References 37 publications

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“…Various product scenarios determine costs, sustainability and large-scale applicability of a Nannochloropsis biorefinery. (Khatoon et al, 2014) *computed as the difference of lipid and protein from 100% *The +1 indicates the amount of water added; 3 is only for the amount of chloroform and methanol. …”

Section: Resultsmentioning

confidence: 99%

A biorefinery for Nannochloropsis: Induction, harvesting, and extraction of EPA-rich oil and high-value protein

Chua

Schenk

2017

Bioresource Technology

127

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Please cite this article as: Chua, E.T., Schenk, P.M., A biorefinery for Nannochloropsis: induction, harvesting, and extraction of EPA-rich oil and high-value protein, Bioresource Technology (2017), doi: http://dx.doi.org/10. 1016/ j.biortech.2017.05.124 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. AbstractMicroalgae have been studied as biofactories for almost four decades. Yet, even until today, many aspects of microalgae farming and processing are still considered exploratory because of the uniqueness of each microalgal species. Thus, it is important to develop the entire process of microalgae farming: from culturing to harvesting, and down to extracting the desired high-value products. Based on its rapid growth and high oil productivities, Nannochloropsis sp. is of particular interest to many industries for the production of highvalue oil containing omega-3 fatty acids, specifically eicosapentaenoic acid (EPA), but also several other products. This review compares the various techniques for induction, harvesting, and extraction of EPA-rich oil and high-value protein explored by academia and industry to develop a multi-product Nannochloropsis biorefinery. Knowledge gaps and opportunities are discussed for culturing and inducing fatty acid biosynthesis, biomass harvesting, and extracting EPA-rich oil and high-value protein from the biomass of Nannochloropsis sp.

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Section: Resultsmentioning

confidence: 99%

A biorefinery for Nannochloropsis: Induction, harvesting, and extraction of EPA-rich oil and high-value protein

Chua

Schenk

2017

Bioresource Technology

127

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“…Similar results were found in a study on Nannochloropsis sp by Khatoon. 17 Jahnke and White observed that low salinity conditions changed Dunaliella to have enlarged cell size, decreased carbonate pool, and increased production of α-tocopherol and total glutathione. 18 Our results are in agreement with the previous studies on Dunaliella where increased salinity had resulted in slow growth.…”

Section: Effect Of Salinitymentioning

confidence: 99%

“…18 Our results are in agreement with the previous studies on Dunaliella where increased salinity had resulted in slow growth. [17][18][19][20][21][22] In fact, increased salinity could inhibit photosynthesis in microalgae. 19,23 The mechanism of this inhibition is the destruction of repair cycle of photo-damaged PS-II via suppression of protein de novo synthesis, especially D1 protein of the PS II at high salinity.…”

Section: Effect Of Salinitymentioning

confidence: 99%

Enhancing Lipid Production of Dunaliella tertiolecta by Manipulating the Interactive Effect of Salinity and Nitrogen

Rizwan

Mujtaba

Rashid

et al. 2017

Chem.Biochem.Eng.Q.

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Low lipid yield is a major bottleneck towards the scale-up application of microalgae for biodiesel production. The focus of this study was to improve the lipid production of Dunaliella tertiolecta (a marine microalga) by altering the concentration of salinity and nitrogen (as nutrients). The unique aspect of this study was to investigate the interactive effect of nitrogen and salinity on lipid production and their correlation with biomass yield and nitrogen uptake. In this experiment, microalgae were grown under various combinations of salinity and nitrogen. At first, lipid production was observed under varied nitrogen concentration (0-75 mg L -1 as NaNO 3 ) and fixed salinity, 37.7 Practical Salinity Unit (PSU). The maximum cell growth rate of 288.4 mg L -1 d -1 and lipid production of 29.3 % were achieved at 75 mg L -1 of NaNO 3 . Now, this concentration of nitrogen was fixed and the effects of salinity concentrations were observed. The lipid production increased to 34 %, and cell growth rate decreased to 201.3 mg L -1 d -1 at 3.77 PSU of salinity. However, further reduction of the nitrogen concentration down to 18.75 mg L -1 of NaNO 3 increased the lipid production to 42 % and decreased biomass to 0.64 g L -1 . It was also found that lipid production was linearly correlated with nitrogen uptake. Microalgae cells consumed all of the nitrogen in the first 24 hours of acclimation; however, lipid yield did not change much over time.

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“…Tetraselmis chuii was cultured in 25 L closed cylinder photobioreactors under laboratory conditions using Conway medium according to Khatoon et al, (2014). The initial cell density for each culture was at 1 9 10 5 cells mL -1 .…”

Section: Culture Of Microalgaementioning

confidence: 99%

“…are flagellated chlorophytes with rapid growth rate, and can stand a broad range of temperatures and pH values (Khatoon et al 2014). Tetraselmis sp.…”

Section: Introductionmentioning

confidence: 99%

Tetraselmis chuii biomass as a potential feed additive to improve survival and oxidative stress status of Pacific white-leg shrimp Litopenaeus vannamei postlarvae

et al. 2017

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Shrimp is an important traded fishery commodity. When subjected to stress, shrimp usually suffers from oxidative stress, which leads to cell injury, senescence, and death. To maintain shrimp good health, performance and production, antioxidant and immune systems are important. Natural antioxidants found in microalgae may be used to increase the cell protection against oxidative damage, being a promising alternative to the carcinogenic synthetic antioxidants. In this study, Tetraselmis chuii was evaluated for its effect on survival, growth and oxidative stress biomarkers on Litopenaeus vannamei postlarvae (PL). The antioxidant properties of the formulated feed with T. chuii inclusion were determined using four antioxidant chemical assays. Meanwhile, the oxidative stress biomarkers on PL were analyzed by hydrogen peroxide, membrane stability and lipid peroxidation assays. Results showed that PL reared on diets supplemented with 50% T. chuii had a significantly higher (P B 0.05) survival (97.6 ± 1.4%) and lower oxidative stress in terms of hydrogen peroxide content (10.08 ± 0.4 mM g -1 FW) and electrolyte leakage (10.8 ± 0.3%). The result of this study also showed that shrimp PL reared on diets supplemented with microalgal, T. chuii have high resistance to reverse salinity stress test (76.7-100%). However, no significant differences (P C 0.05) were found in the growth and lipid peroxidation. Due to the positive effect on oxidative stress status, survival and resistance to salinity stress, the feeding of L. vannamei PL with diet containing at least 50% of T. chuii is recommended as a natural source of antioxidant for PL.

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Effects of different salinities and pH on the growth and proximate composition of Nannochloropsis sp. and Tetraselmis sp. isolated from South China Sea cultured under control and natural condition

Cited by 99 publications

References 37 publications

A biorefinery for Nannochloropsis: Induction, harvesting, and extraction of EPA-rich oil and high-value protein

A biorefinery for Nannochloropsis: Induction, harvesting, and extraction of EPA-rich oil and high-value protein

Enhancing Lipid Production of Dunaliella tertiolecta by Manipulating the Interactive Effect of Salinity and Nitrogen

Tetraselmis chuii biomass as a potential feed additive to improve survival and oxidative stress status of Pacific white-leg shrimp Litopenaeus vannamei postlarvae

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