Impact of combined monochromatic light on the biocomponent productivity of Dunaliella salina

2021 ◽  
Vol 13 (2) ◽  
pp. 023101
Author(s):  
Cuili Jin ◽  
Binqi Yu ◽  
Shouyuan Qian ◽  
Qing Liu ◽  
Xiaojian Zhou
Keyword(s):  
Dunaliella Salina ◽  
Monochromatic Light

Monochromatic light filters to enhance biomass and carotenoid productivities of Dunaliella salina in raceway ponds

2021 ◽  
pp. 125689
Author(s):  
Emeka G. Nwoba ◽  
Tarannom Rohani ◽  
Mohammadjavad Raeisossadati ◽  
Ashiwin Vadiveloo ◽  
Parisa A. Bahri ◽  
...  
Keyword(s):  
Dunaliella Salina ◽  
Monochromatic Light ◽  
Light Filters ◽  
Raceway Ponds

Instrumentation for detecting channelling radiation in the high-voltage electron microscope

1983 ◽  
Vol 41 ◽  
pp. 318-319
Author(s):  
J. H. Butler ◽  
C. J. Humphreys
Keyword(s):  
Monochromatic Light ◽  
Incident Beam ◽  
Laboratory Frame ◽  
Relativistic Electrons ◽  
Voltage Electron ◽  
Dipole Emission ◽  
Sinusoidal Oscillations ◽  
Pass Through ◽  
Incident Beam Energy ◽  
Increasing Function

Electromagnetic radiation is emitted when fast (relativistic) electrons pass through crystal targets which are oriented in a preferential (channelling) direction with respect to the incident beam. In the classical sense, the electrons perform sinusoidal oscillations as they propagate through the crystal (as illustrated in Fig. 1 for the case of planar channelling). When viewed in the electron rest frame, this motion, a result of successive Bragg reflections, gives rise to familiar dipole emission. In the laboratory frame, the radiation is seen to be of a higher energy (because of the Doppler shift) and is also compressed into a narrower cone of emission (due to the relativistic “searchlight” effect). The energy and yield of this monochromatic light is a continuously increasing function of the incident beam energy and, for beam energies of 1 MeV and higher, it occurs in the x-ray and γ-ray regions of the spectrum. Consequently, much interest has been expressed in regard to the use of this phenomenon as the basis for fabricating a coherent, tunable radiation source.

Dunaliella salina Teod. as a Prominent Source of Eicosapentaenoic Acid

2010 ◽  
Vol 12 (2) ◽  
pp. 185-189 ◽  
Author(s):  
Rahul A. Bhosale ◽  
M. P. Rajabhoj ◽  
B. B. Chaugule
Keyword(s):  
Eicosapentaenoic Acid ◽  
Dunaliella Salina

STUDY AND CHARACTERIZATION GROWTH OF FOUR MICROALGAE SPECIES AND TEST ANTIMICROBIAL ACTIVITY

Jurnal Zarah ◽  
2018 ◽  
Vol 6 (2) ◽  
pp. 53-58
Author(s):  
Marniati Salim
Keyword(s):  
Dunaliella Salina ◽  
Methanol Extract ◽  
Sea Water ◽  
Basal Medium ◽  
Nannochloropsis Oculata ◽  
Inhibitory Zone ◽  
Antimicrobial Sensitivity ◽  
Sensitivity Tests ◽  
Microalgae Biomass ◽  
Chaetoceros Calcitrans

Abstract In this study to the growth characteristics of microalgae (Dunaliella salina, Nannochloropsis oculata, Tetrasel mis chuii & Chaetoceros calcitrans), in different mediums, namely Bold’s Basal Medium (BBM) and BBM modification of sea water. The results obtained from microalgae (N.oculata, T.chuii, C.calcitrans) are better grown on BBM media while microlaga D.salina grows well on BBM modification of sea water. Microalgae biomass is extracted by maceration method in hexane and methanol solvents. Test bacteria used gram positive (Staphylococcus aureus) and gram negative (Escherichia coli). Inhibitory zone diameter results were compared with antimicrobial sensitivity tests according to Clinical and Laboratory Standards Institute (CLSI). From the results of microalgae hexane and methanol extract antibacterial activity tests (D.salina, N.oculata, T.chuii, C.calcitrans) showed that the extract was not too sensitive to inhibit bacterial growth.   Keywords: microalgae, medium, antimicrobial

Peningkatan Lipid dunaliella salina dengan Variasi Konsentrasi N2

2017 ◽  
Vol 5 (03) ◽  
pp. 248-254
Author(s):  
Elida Purba ◽  
Wildan Arief Rohdina
Keyword(s):  
Dunaliella Salina

Penelitian ini membahas tentang pengaruh variasi konsentrasi N2 terhadap perolehan jumlah lipid Dunaliella salina dengan intensitas cahaya sebesar 3000 lux. Penelitian ini bertujuan mengetahui konsentrasi N2 yang sesuai untuk memperoleh lipid Dunaliella salina maksimum. Fotosintesis berlangsung di dalam fotobioreaktor dengan volume bioreaktor 2 l (500 ml Dunaliella salina, 1500 ml air laut, dengan variasi N2 0,06, 0,07, 0,08, 0,09 dan 0,1 M) dengan laju alir gas total 5 l/menit. Pengkulturan dilakukan selama 5 hari dan memanen biomassa pada hari ke-5. Hasil penelitian menunjukan bahwa adanya peningkatan perolehan lipid seiring dengan meningkatnya konsentrasi N2 yang diberikan. Jumlah lipid maksimum diperoleh pada variasi N2 0,1 M yaitu 2,3727 %.

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