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2 edition of Nitrogen metabolism in Scenedesmus obliquus (Turp.) Kütz. as affected by environmental changes. found in the catalog.

Nitrogen metabolism in Scenedesmus obliquus (Turp.) Kütz. as affected by environmental changes.

William Hewitt Thomas

Nitrogen metabolism in Scenedesmus obliquus (Turp.) Kütz. as affected by environmental changes.

by William Hewitt Thomas

  • 297 Want to read
  • 36 Currently reading

Published .
Written in English

    Subjects:
  • Scenedesmus obliquus.,
  • Proteins.

  • Classifications
    LC ClassificationsQK565 .T5
    The Physical Object
    Paginationiii, 42 l.
    Number of Pages42
    ID Numbers
    Open LibraryOL209006M
    LC Control Numbera 55005975
    OCLC/WorldCa17933744

    Semicontinuous cultures of Scenedesmus obliquus in artificial wastewater were maintained with 30% and 40% daily dilutions and under a h light-dark cycle, with temperatures of and   Microalgae grown heterotrophically are reported to grow well and yield more biomass and metabolites when compared to photoautotrophic cultivation. In the present study, the growth of Scenedesmus obliquus in solution containing glucose, urea, and diammonium phosphate as carbon (– %), nitrogen (– %) and phosphorus (– %) sources was evaluated.

      Scenedesmus obliquus was obtained from the Freshwater Algae Culture Collection, Institute of Hydrobiology, Chinese Academy of Sciences. The strain was pre-cultured aseptically in mL Erlenmeyer. Since the transfer of the alga cells from batch system cultivation technique to a semi-continues system increased the oil content of Scenedesmus obliquus from 32% to 40% under nitrogen deficiency.

    Cultivation of oleaginous microorganisms on wastewater provides alternative biofuel options while also acting as a remediation technique for alternative wastewater treatment. This chapter describes. The removal of phosphorus and nitrogen by the freshwater alga Scenedesmus obliquus, cultured in urban wastewater, previously submitted to secondary sewage treatment, was studied under different conditions of stirring and temperature. In all cases, the amount of NH 3 lost, as well as biomass productivity and its biochemical composition, were evaluated. The specific growth rates.


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Nitrogen metabolism in Scenedesmus obliquus (Turp.) Kütz. as affected by environmental changes by William Hewitt Thomas Download PDF EPUB FB2

Krauss RW, Thomas WH. The Growth and Inorganic Nutrition of Scenedesmus obliquus in Mass Culture. Plant Physiol.

May; 29 (3)– [PMC free article] Macpherson HT. Modified procedures for the colorimetric estimation of arginine and histidine. Biochem J. Feb; 36 ()– [PMC free article] Pearsall WH, Billimoria by: G.S. Anisha, R.P. John, in Advances in Hydrogen Production, Storage and Distribution, Algal species used for hydrogen production.

The unicellular green microalga Scenedesmus obliquus was first reported to evolve hydrogen under anaerobic conditions in dark or light (Gaffron and Rubin, ).Unicellular green algae such as Chlamydomonas reinhardtii (Pantí et al., ), Chlorella. sive study of the nitrogen metabolism of a representa-tive, fresh-wN-ater, green alga, Scenedesmus obliquus (Turp.) Kiutz., grown in mass culture.

Changes in the content of the major nitrogen fractions are cor-related with modifications in the environment, and a basis is established for future detailed examination of specific pathways of Cited by:   Nitrogen Metabolism in Scenedesmus as Affected by Environmental Changes.

William H. Thomas, Robert W. Krauss Plant Physiology Mar30 (2) ; DOI: /ppCited by:   Tetradesmus obliquus is an oleaginous microalga with high potential for triacylglycerol production.

We characterized the biochemical composition and the transcriptional landscape of T. obliquus wild-type and the starchless mutant (slm1), adapted to h light dark (LD) cycles under nitrogen comparison to the nitrogen replete conditions, the diurnal RNA samples from Author: G.

Mitsue León-Saiki, Benoit M. Carreres, Ilse M. Remmers, René H. Wijffels, René H. Wijffels, Vitor. The biosynthesis and metabolism of astaxanthin in coenobium alga Scenedesmus obliquus were investigated using a two-stage culture. The first stage was for the analysis of biosynthesis and accumulation of astaxanthin in alga cells which were cultured under induction conditions (incubation at 30 °C and illumination of μmol m −2 s −1) for 48 h.

In this study, the effects of different operating conditions on the salt removal from brackish water by dry and fresh Scenedesmus obliquus (S. obliquu. This study investigated the changes in lipid and starch contents, lipid fraction, and lipid profile in the nitrogen-starved Scenedesmus obtusus XJ at different temperatures (17, 25, and 33 °C).

The optimal temperature for both growth and lipid accumulation under nitrogen-sufficient condition was found to be 25 °C. However, under nitrogen deprivation, the total and neutral lipids increased. Microalgae biofuels have received extensive attention as a new generation of renewable energy.

However, the cost of cultivation and harvest limits the. Different cultivation strategies have been developed with the aim of increasing the production rate of microalgal pigments.

Specifically, biotechnological approaches are designed to increase antioxidant metabolites as chlorophyll and carotenoids. However, although significant advances have been built up, available information regarding both the chlorophyll metabolism and their oxidative.

This study illustrated the growth of Scenedesmus obliquus and recycle of nutrients in wastewater combined with inorganic carbon under autotrophic esmus obliquus was cultivated under different conditions by adding sodium carbonate (Na 2 CO 3) at 15–40 mg l −1 separately in wastewater containing high nitrogen and phosphorus content.

The growth characteristics of S. obliquus. Effect of different nitrogen sources on growth and biochemical composition of the green microalgae Scenedesmus obliquus and Chlorella kessleri. Third International Conference on Biological Sciences; AprTanta, Egypt.

Tanta (Egypt): [publisher unknown]; c p. Microalgae are a promising platform for producing neutral lipids, to be used in the application for biofuels or commodities in the feed and food industry. A very promising candidate is the oleaginous green microalga Scenedesmus obliquus, because it accumulates up to 45% w/w triacylglycerol (TAG) under nitrogen starvation.

Under these conditions, starch is accumulated as well. Background: Scenedesmus obliquus, a green unicellular chlorophycean microalga, is well-established as a lipid and biomass production platform. The nutrient.

microalga Scenedesmus obliquus, because it accumulates up to 45% w/w triacylglycerol (TAG) under nitrogen starvation. Under these conditions, starch is accumulated as well. Starch can amount up to 38% w/w under nitrogen starvation, which is a substantial part.

Jiřina Dvořáková-Hladká, A comparison of growth rate of algae as influenced by variation in nitrogen nutrition inChlorella pyrenoidosa andScenedesmus obliquusSrovnání růstu řasChlorella pyrenoidosa aScenedesmus obliquus za různých podmínek výživy dusíkemem, Biologia Plantarum, /BF, 13, 1, (), ().

Nitrogen is the most critical macronutrient affecting growth and lipid metabolism in algae, since it is an essential constituent of functional processes and cell structure (Sharma et al.). A general trend of lipid accumulation, mostly triglycerides, in response to nitrogen deficiency has been observed in several species of different microalgae.

Duplicate batch nitrogen run-out cultivations of the wt and the slm1 S. obliquus. Left (A, C): (B, D): (A, B): biomass concentration (g DW/l) and dissolved NO 3-N (C, D): total fatty acid (TFA), TAG, and starch indicated in the legend boxes in the figure, in the top figure, the black symbols represent the dry weight concentration and the.

the content of the major nitrogen fractions are cor-related with modifications in the environment, and a basis is established for future detailed examination of specific pathways of nitrogen metabolism. Materials and Methods The strain, Scenedesmus obliquus WH, was originally isolated from cultures at the Marine Bio.

Microalgae are a promising platform for producing neutral lipids, to be used in the application for biofuels or commodities in the feed and food industry. A very promising candidate is the oleaginous green microalga Scenedesmus obliquus, because it accumulates up to 45% w/w triacylglycerol (TAG) under nitrogen starvation.

Under these conditions. Microalgae are microorganisms with the capacity to contribute to the sustainable and healthy food production, in addition to wastewater treatment. The subject of this work was to determine the potential of Scenedesmus obliquus microalga grown in brewery wastewater to act as a plant biostimulant.

The germination index of watercress seeds, as well as the auxin-like activity in mung bean and.TAG and starch accumulation. For both the wild-type (wt) S.

obliquus (UTEX ) and a starchless mutant (slm1) of S. obliquus[], duplicate nitrogen run-out experiments were performed to investigate the difference in carbon partitioning between the wt and the slm1 under nitrogen depleted conditions (Figure 1).Reactors were inoculated at 50 mg DW/l and cultivated at an incident light intensity.

The capability of utilizing 20 amino acids and 2 amides as the sole nitrogen source for growth was studied in two green algae (Chlorophyceae). A comparison was made of the growth rate of algae in a mineral nutrient solution containing nitrate as the nitrogen source, with that in the same solution in which nitrogen in the form of nitrate was substituted by an equivalent nitrogen amount in .