Growth and Total Carotenoid, Chlorophyll a and Chlorophyll b of Tropical Microalgae (Isochrysis sp.) in Laboratory Cultured Conditions

Chowdhury, Ahmed Jalal Khan; Shamsudin, A.; Rahman, M.F.A.; Nurzatul, N.Z; Rozihan, M.

doi:10.3923/jbs.2013.10.17

Cited by 24 publications

(16 citation statements)

References 15 publications

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“…Furthermore, phycobiliproteins are among the most valuable accessory pigments that can be extracted from cyanobacteria, given their extremely health beneficial effects. These water-soluble, fluorescent proteins are largely considered as potent functional ingredients with very interesting applications in various fields, especially in biotechnology, medicine, and pharmacy (Jalal et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Biochemical analysis of cyanobacterial strains isolated from different Tunisian inland waters: therapeutical and nutritional potential

Gharbi¹,

Fathalli²,

Fassatoui³

et al. 2019

Int. J. Bio. Chem. Sci

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The last decade period has been characterized by a remarkable increase in the need for food, bioenergy, and pharmaceutical compounds. Meanwhile, microalgae have been in the center of interest as a rich and sustainable source of highly valuable natural products and bioactive compounds. In this perspective, the present study aimed at investigating the biochemical composition of 10 cyanobacterial strains collected from several Tunisian inland waters, seeking to identify the possible use of cyanobacteria in nutraceuticals and pharmaceuticals industry, and for animal and human consumption. Ten local strains of cyanobacteria were isolated from several Tunisian inland waters and cultured in controlled laboratory conditions. Fatty Acid methyl esters were analyzed in each strain by Gas chromatography-Mass spectrometry (GC-MS) as well as total proteins, carbohydrates and different phycobiliproteins (phycocyanin, allophycocyanin and phycoerythrin). Results showed that Planktothrix agardhii, Leptolyngbya sp1., and Leptolyngbya sp2. contained 14 different fatty acids, among which oleic acid was the most abundant. These might be important in nutraceutical and agronomic sectors due to the potent antioxidant and larvicidal activities of oleic acid. Cylindrospermopsis raciborskii presents extraordinarily high levels of phycocyanin, making it an exceptional natural reservoir of effective and non-toxic drugs that are of particular interest against cancer and neurodegenerative diseases. Extracts from cyanobacterial strains represent a natural and available source of proteins, of highly valuable fatty acids, and especially of phycocyanin which is known by its extremely health beneficial properties. The nutritional and functional complements provided by these extracts can be used in the prevention of various diseases and also as effective and environmentally friendly insecticides.

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Section: Introductionmentioning

confidence: 99%

Biochemical analysis of cyanobacterial strains isolated from different Tunisian inland waters: therapeutical and nutritional potential

Gharbi¹,

Fathalli²,

Fassatoui³

et al. 2019

Int. J. Bio. Chem. Sci

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“…In day 13 it can be observed that cells undergoes dead phase whereas microalgae was run out of nutrients and die off. The most important parameter regulating algal growth are nutrient quality and quantity (Jalal et al, 2012). This growth pattern were simillar to result repored by Jalal et al, (2012) in Isochyris sp.…”

Section: Fame Analysismentioning

confidence: 59%

“…The most important parameter regulating algal growth are nutrient quality and quantity (Jalal et al, 2012). This growth pattern were simillar to result repored by Jalal et al, (2012) in Isochyris sp. Hemalatha et al, (2014).…”

Section: Fame Analysismentioning

confidence: 59%

Lipid Screening, Extraction and Production of Biodiesel from Marine Diatom Odontella aurita

Lawrence¹,

Anantharaman²

2017

Int.J.Curr.Microbiol.App.Sci

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“…An elevated total carotenoid content in nitrogen stressed Isochrysis cells has been reported elsewhere (Jalal et al . ). An increase in the photoprotective carotenoid concentration in Isochrysis galbana cells exposed to elevated irradiances has also been observed (Fujiki & Taguchi ) but no study characterized the carotenoid complement produced by this species when nitrogen‐stressed.…”

Section: Resultsmentioning

confidence: 97%

Influence of nitrogen stress on Isochrysis galbana strain U4, a candidate for biodiesel production

Roopnarain

Gray

Sym

2014

Phycological Research

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Lipid accumulation has been investigated in numerous microalgal species to assess their potential with respect to biodiesel production. The present work determines the effect of nitrogen stress on physiological and ultrastructural changes in Isochrysis galbana U4. This study is unique in showing the correlations between growth, lipid production, pigmentation and ultrastructural changes in Isochrysis cells undergoing nitrogen starvation. The continuation of algal growth after the complete depletion of external nitrogen was shown to be supported by internal nitrogen stores, possibly in the pyrenoid. Cell growth ceased and lipid accumulation was initiated after the internal store of nitrogen had become exhausted. The depletion of intracellular nitrogen reservoirs to critical thresholds initiated the onset of the stationary phase, a decline in chlorophyll content and the initiation of lipid and carotenoid accumulation. The most notable ultrastructural changes, upon nitrogen stress, were the accumulation of plastidial and cytoplasmic lipid bodies and the dismantling of the chloroplast. The size of the pyrenoid when external nitrogen became depleted was found to decrease significantly, up to four-fold. This was attributed to the remobilization of nitrogen from Rubisco. The level of expression of heterochromatin was found to increase when cells were nitrogen starved. This is thought to favor long-term dormancy in this species because aging cells have been noted to recover rapidly when returned to conditions favorable for growth. The observations of this study are consistent with the hypothesis that the responses of Isochrysis cells to nitrogen starvation are regulated by the internal reserves of nitrogen, and the depletion of these reserves is an important trigger for lipid accumulation in this species. The findings of this study also indicate that Isochrysis galbana U4 is a promising candidate for biodiesel lipid production.

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Growth and Total Carotenoid, Chlorophyll a and Chlorophyll b of Tropical Microalgae (Isochrysis sp.) in Laboratory Cultured Conditions

Cited by 24 publications

References 15 publications

Biochemical analysis of cyanobacterial strains isolated from different Tunisian inland waters: therapeutical and nutritional potential

Biochemical analysis of cyanobacterial strains isolated from different Tunisian inland waters: therapeutical and nutritional potential

Lipid Screening, Extraction and Production of Biodiesel from Marine Diatom Odontella aurita

Influence of nitrogen stress on Isochrysis galbana strain U4, a candidate for biodiesel production

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