Green microalga

Ebook "Transgenic microalgae as green cell factories (Advances in experimental medicine and biology, Volume 616)" book includes chapters focussing on biotechnological applications of transgenic microalgae. The enormous amount information generated by the genomic or cDNA sequencing projects and its implications on the development of new biotechnological applications of microalgae are analysed in Chapter 6.

145p duongthandue0501 28-02-2024 5 1   Download

Microalgae with their improved growth rates and accumulation of high-value-added products make their commercial production attractive. Among them, lutein, which is a carotenoid, plays a very important role due to its various applications in the food and pharmaceutical industry. Induction of its biosynthesis can be triggered by various stress conditions like light. In this study, three different light intensities (50,150 and 300 µmol photons/m2 s) and aeration rates (1, 3, and 5 L/min) were utilized to induce the lutein biosynthesis and biomass productivity in Scenedesmus obliquus.

9p lyhuyenthu 31-01-2023 3 2   Download

Microalgae are organisms effective of accumulating high quantity of industrially important lipids with promising characteristics as an excellent feedstock for biodiesel production. This study assess the possibility of using a green microalga, Chlorococcum infusionum (EAU10) for biodiesel production by evaluating the growth characteristic, lipid yield and fatty acid profile of the microalga cultivated at varying concentrations of nitrogen source.

6p mudbound 10-12-2021 5 1   Download

The aim of this study was to obtain an oil extract from a Bulgarian green microalga strain Coelastrella sp. BGV and to assess its anticancer and apoptogenic activity in vitro against human tumor cells HeLa by means of MTT and fluorescence microscopy analyses. The results showed that the oil extract obtained by a direct extraction using a common vegetable oil reduces proliferation and induces apoptosis in HeLa cells.

3p mudbound 10-12-2021 16 1   Download

Scenedesmus obliquus belongs to green microalgae and is widely used in aquaculture as feed, which is also explored for lipid production and bioremediation. However, genomic studies of this microalga have been very limited.

14p vijeeni2711 30-06-2021 18 1   Download

The present investigation emphasizes on study of fresh water algae from surrounding area of Baramati city in Pune district of Maharashtra. Investigation shows that 23 genus algae were observed along with 25 species from 8 samples were isolated. These microalgae belonging to three major classes Chlorophyceae 11 sp., Bacillariophyceae 07 sp., Cyanophyceae 06 sp., Euglenophyceae 01 sp. and Batrachospermaceae 01 sp. Maximum algal genera belong to Chlorophyceae class was recorded.

5p chauchaungayxua10 19-03-2021 10 1   Download

The green microalga Dunaliella salina accumulates a high proportion of β-carotene during abiotic stress conditions. To better understand the intracellular flux distribution leading to carotenoid accumulation, this work aimed at reconstructing a carbon core metabolic network for D. salina CCAP 19/18 based on the recently published nuclear genome and its validation with experimental observations and literature data.

9p vicolorado2711 23-10-2020 13 1   Download

The aim of this study was to evaluate the potential of microalgae as source of oil rich biomass. 9 (nine) green algae and 2 (two) cyanobacteria strains were isolated from fresh water in mangrove areas of Southern Coast of Sao Paulo State, and cultivated in the laboratory for analyzing lipid content and fatty acids profile.

10p nguaconbaynhay7 15-08-2020 10 1   Download

In this study, the effect of textile dye (Optilan Red) toward microalgae Chlorella vulgaris was monitored for a period of 96 hours. The parameters such as specific growth rate (SGR), EC50, protein, chlorophyll, carotenoid and elemental composition of the microalgae were recorded. Results showed that SGR for C. vulgaris decreased with increase in concentration of dye and a significant decrease was noticed upto 20 ppm however, further increase in concentration showed no growth of the organism. EC50 for Optilan Red was found to be 23.16 ppm.

10p caygaocaolon5 27-05-2020 10 1   Download

Microalgae have been recognized as a good food source of natural biologically active ingredients. Among them, the green microalga Euglena is a very promising food and nutritional supplements, providing high value-added poly-unsaturated fatty acids, paramylon and proteins.

8p viuchiha2711 21-04-2020 10 0   Download

The algae are one among the biomass energy source which can be promising. The microalgae are the diverse organisms which can inhabit in different climatic conditions and adapt themselves and perpetuate forming their own niche. There is need to improve the local flora for biomass and lipid content instead of culturing exotic species. Chlorella the green microalgae, was isolated from fresh water and was characterized through molecular studies using 18s rRNA homology. The study has revealed that isolated species belong to Chlorophytes (green microalgae).

11p quenchua4 06-04-2020 8 0   Download

In this study, the detrimental effects of trace metals on the growth of phytoplankton and the phytoremediation potential of microalgae from Vietnam are elucidated. Two green algae Scenedesmus accuminatus var biseratus and Scenedesmus protuberans, along with the diatom species Cyclotella sp., were exposed to chromium (Cr) and cadmium (Cd) at three distinct concentrations ranging from 5-761 µgl-1 and 18-667 µgl-1, respectively, over a period of 14 days.

5p 12120609 02-04-2020 12 1   Download

Nitrogen (N) and sulphur (S), being essential macronutrients, have important roles in microalgae metabolism. Effects of N- or S -shortage were investigated in the green microalgae Chlorella s o-rokiniana subjected to 24 h of starvation, by measuring the glutamine synthetase (GS) and O-ace - tylserine(thiol)lyase (OASTL) activities, p roteins and amino acids levels. To test possible met a-bolic impact related to carbon (C) metabolism in response to N- or S -deprivation, starch and total C, N and S contents were also determin ed. The growth of C.

9p mentospurefresh 29-11-2019 13 1   Download

Green microalgae Haematococcus pluvialis is best known for astaxanthin production. The cultivation of H. pluvialis involves two main phases, namely green vegetative stage and cyst stage with astaxanthin accumulation. In fact, the growth of H. pluvialis in the vegetative stage is one of the most important parts in the entire cultivation process. The aim of the study is to investigate the influence of temperature, inoculum size, CO2 concentration and light emitting diodes (LEDs) on the specific growth rate, cell density and dry weight of H. pluvialis in the vegetative stage.

7p caygaocaolon1 13-11-2019 20 1   Download

Human activities generate vast amounts of wastewater, which contains various toxic metals. Microalgae are able to remove heavy metals from wastewater and accumulate lipid to produce biodiesel. In this study, the abilities to remove copper (Cu) and accumulate lipid of the green algal species Scenedesmus sp. were examined. The microalga Scenedesmus sp. was exposed to Cu concentrations of 0, 0.5, 1, 2, 5, and 10 mg/l under laboratory conditions. The results indicated that Cu inhibited the growth of Scenedesmus sp. at a 96hEC50 of 7.54 mg/l. Furthermore, the highest removal rate was 89.5%.

6p caygaocaolon1 13-11-2019 31 1   Download

The green microalga, Haematococcus pluvialis, is currently cultivated for natural astaxanthin in suspended systems. Immobilised cultivation in a twinlayer (TL) porous substrate bioreactor is a potential revolution in microalgal biotechnology worldwide. For the first time in Vietnam, small-scale (0.05 m2 ) and large-scale (2 m2 ) biofilm-based photobioreactor systems arranged at an angle of 150 were successfully designed, assembled, and operated; the temperature, humidity, air, and light conditions for H. pluvialis cultivation were successfully controlled.

10p caygaocaolon1 13-11-2019 26 1   Download

In this paper, wild/type strains of chlorella "green microalgae" isolated from Algerian Sahara soil are tested for their ability to produce biodiesel. The results show that Chlorella sorokiniana strain Ce, under different culture conditions, accumulates some fatty acids which make the most suitable for the production of good quality biodiesel.

6p vannhat_xq 25-02-2017 49 3   Download

Photosynthesis of micro algae is often inhibited by salt stress (Kirst, 1990). Such an inhibition may be explained by a decrease in PSII activity. Indeed, in the green microalgae, salt stress inhibits PSII activity in Dunaliella tertiolecta and Chlamydomonas reinhardtii that is associated with a state-2 transition (Gilmour et al., 1985, Endo et al., 1995). In the cyanobacteria, it has been suggested that the decreased PSII activity in salt-stressed cells is associated with the state-2 transition (Schubert et al., 1993; Schubert and Hagemann, 1990).

654p conquynho32 15-09-2012 59 17   Download

Spirulina are multicellular and filamentous blue-green microalgae belonging to two separate genera Spirulina and Arthrospira and consists of about 15 species. Of these, Arthrospira platensis is the most common and widely available spirulina and most of the published research and public health decision refers to this specific species. It grows in water, can be harvested and processed easily and has significantly high macro- and micronutrient contents. In many countries of Africa, it is used as human food as an important source of protein and is collected from natural water, dried and eaten....

41p lulanphuong 20-03-2012 139 28   Download