AVIGAD VONSHAK PDF

Avigad Vonshak of Ben-Gurion University of the Negev, Beersheba (bgu) with expertise in: Agricultural Plant Science, Genetics and Biotechnology. Read Ajay ni and Avigad Vonshak. 5 Outdoor Mass Production of Spirulina: The Basic Concept. Avigad Vonshak. 6 Tubular Bioreactors. Giuseppe. Avigad Vonshak. Chien, L-F. and Vonshak, A. Enzymatic antioxidant response to low-temperature acclimation in the cyanobacterium Arthrospira.

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The main objective of my work relates to the vonshxk of microalgae as related to mass culturing outdoors. In a nutshell the work so far points out that our original approach taken some 35 years ago of treating algal growth outdoors in terms of light limitation or a process governed by one main limiting factor was a naive attempt to simplify things. Our findings point out that in many cases the system is down regulated or even photoinhibited not necessarily because of exposure to high light intensity but rather due to other environmental stress that reduce the photosynthetic activity be it temperature or salinity.

As a result the ability of the cells to utilize light by the photosynthetic machinery is reduced and thus light levels that are considered as harmless under optimal growth conditions are turning to be over-saturating levels and result in vonxhak regulating vonshakk photoinhibiting the photosynthetic apparatus. Based on this working hypothesis we are also reviewing some of our old data related to the role of light and temperature in outdoor cultures and getting a better understanding that algal cultures are vonsjak during the day from light limitation to light inhibition in a relatively very fast cycle.

The major organism studied was Spirulina or under it avigav name Arthrospira platensis. A large collection of strains collected vonhsak the years from all over the world is used in our studies. In recent years a significant part of the work is dedicated to selection of species Nannochloropsis either from different habitats or after induced random mutations with the attempt to isolate strains of higher adaptability capacity to biotic stress.

Ben-Gurion University, Department of Biology.

The response of A. The effect of light, dark and kinetin on the protein synthesis activity of isolated chloroplasts.

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Awards, Citations, Honors, Fellowships: Member in the Ad-Hoc committee for setting up the criteria’s for fund distribution to the Israeli municipalities. Physiology, Cell-biology and Biotechnology. In Techniques in Bioproductivity and Photosynthesis.

Pergamon Press, London, Problems in developing the biotechnology of algal biomass production. In Biosaline research – a look wvigad the future. San-Pietro Martinus Nijhoff Eds. This volume has been translated to Spanish, Portuguese, Chinese and Russian. Reprinted and Corrected Edition, J. Laboratory techniques for the culturing of microalgae.

In Handbook for Algal Mass Culture. Cambridge University Press, Photoinhibition in outdoor cultures of the cyanobacterium Spirulina platensis.

Techniques and New Developments in Photosynthesis Research. The effect of temperature and cell concentration on fatty acid composition of outdoor cultures of Porphyridium cruentum. In Algal BiotechnologyT.

Photoinhibition as a limiting factor in outdoor cultivation of Spirulina platensis. Photosynthesis and Production in a Changing Environment: A Field and Laboratory Manual.

Methods for enhancement and determination of astaxanthin accumulation in the green alga Haematococcus pluvialis. In Methods in EnzymologyVol. Economic and Social Aspects. Cambridge University Press, U. Chapters written in Vonshak, A. Growth, Physiology and Biochemistry.

Outdoor Mass Production of Spirulina: Use of Spirulina Biomass. The Ecology of Cyanobacteria. Kluwer Academic Publishers, Netherlands,pp. Biotechnology for Algal Mass Cultivation. Recent Advances in Marine Biotechnology, Vol.

Biotechnology and Vonsak Phycology.

avigad vonshak – Google Scholar Citations

Blackwell Science,pp. Refereed articles in scientific journals: Initial stages in the onset of senescence in tobacco leaves. Spirulina culture in Israel. Genome multiplication as related to the growth rate in blue-green algae Anacystis nidulans. Plant and Cell Physiology22 8: Production of Spirulina biomass: The feasibility of mass cultivation of Porphyridium. Plant and Soil An automatic method for on-line estimation of the photosynthetic rate in open algal ponds.

Management of Spirulina mass culture. Beihefte zur Nova Hedwigia The potential use of Porphyridium biomass for valuable natural products. Lipid and biomass production by the halotolerant microalga Nannochloropsis salina. Fatty acid composition of Spirulina strains under various environmental conditions.

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Strain selection of Spirulina suitable for mass production. Biological limitations in developing the biotechnology for algal mass cultivation. Outdoor cultivation of the marine microalga Isochrysis galbana in open raceways. The effect of environmental conditions on fatty acid composition of the red alga Porphyridium cruentum: Journal of Phycology24 3: Photoinhibition and its recovery in two different strains of Spirulina.

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Plant and Cell Physiology29 4: Mass production of Spirulina – an overview, Biomass15 4: The kinetics of photoinhibition and its recovery in the red alga Porphyridium cruentumArch. Automatic on-line growth estimation method for outdoor algal biomass production.

Use of a solid support in the study of photosynthetic activity of Spirulina platensis. A macro model for outdoor algal mass production. Biotechnology Advances8: Fatty acid composition of Spirulina and Spirulina -like cyanobacteria as a tool in chemotaxonomy. Stahl and Vonshak, A. Applied Phycology2: Photoadaptation, photoinhibition and productivity in outdoor grown Spirulina platensis strains.

Photoacclimation in the red alga Porphyridium cruentum: Changes in photosynthetic enzymes, electron carriers, and light-saturated rate of photosynthesis as avigaf function of irradiance and spectral quality. A new tubular reactor for mass production of microalgae outdoors. Cultivation of Spirulina using secondary treated starch wastewater. Australian Biotechnology3: Use of chlorophyll fluorescence to estimate the effect of photoinhibition in outdoor cultures of Spirulina platensis.

Effect of temperature and irradiance on growth of Haematococcus pluvialis Chlorophyceae J. Effect of light and temperature on the photosynthetic capacity of the cyanobacterium Spirulina platensis. Biomass and Bioenergy 6: Optimization of g-linolenic acid GLA production in Spirulina platensis. Optical properties of dense algal cultures outdoors and its application to remote estimation of biomass and pigment concentration in Spirulina platensis cyanobacteriaJ.

The biosynthetic pathway of astaxanthin in a green alga Haematococcus pluvialis as indicated by inhibition with vonshao. Plant Cell Physiology Physiological characterization of Spirulina platensis isolates: Light acclimation and vonehak in three Spirulina platensis isolates.

Role of light and photosynthesis on the acclimation process of the cyanobacterium Spirulina platensis to salinity stress.

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Light and oxygen stress in Spirulina platensis cyanobacteria grown outdoors in tubular reactors. Physiologia Plantarum Recombination protein A gene, rec A, from Spirulina platensis sp.

Does astaxanthin protect Haematococcus against light damage? Adaptation of Spirulina platensis to salinity-stress. Comparative Biochemistry and Physiology, A. Kinetic response of photosystem II photochemistry in the cyanobacterium Spirulina platensis to high salinity is characterized by two distinct phases.