Browsing by Author "Samantha J., Bryan"

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The Effect of LEDs on Biomass and Phycobiliproteins Production in Thermotolerant Oscillatoria sp.

Contreras Ropero, Jefferson Eduardo; Lidueñez Ballesteros, Valentina S.; Rodríguez Bohórquez, Angie D.; García-Martinez, Janet; Urbina-Suarez, Nestor Andres; López Barrera, German Luciano; Barajas Solano, andres F; Samantha J., Bryan; ZUORRO, Antonio (Applied Sciences (Switzerland), 2022-11-17)

This study evaluates the role of different LED lights (white, blue/red), intensity (µmol m−2 s −1 ), and photoperiod in the production of biomass and phycocyanin-C, allophycocyanin and phycoerythrin (C-PC, APC, and PE ...
Removal of Nutrients and Pesticides from Agricultural Runoff Using Microalgae and Cyanobacteria

Castellanos Estupiñan, Miguel A.; Carrillo Botello, Astrid M.; Rozo Granados, Linell S.; Becerra Moreno, Dorance; García-Martinez, Janet; Urbina-Suarez, Nestor Andres; López Barrera, German Luciano; Barajas Solano, andres F; ZUORRO, Antonio; Samantha J., Bryan (Water (Switzerland)Suiza, 2022-02-12)

The use of pesticides in agriculture has ensured the production of different crops. However, pesticides have become an emerging public health problem for Latin American countries due to their excessive use, inadequate ...

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The Effect of LEDs on Biomass and Phycobiliproteins Production in Thermotolerant Oscillatoria sp.
...
Contreras Ropero, Jefferson Eduardo | 2022-11-17

This study evaluates the role of different LED lights (white, blue/red), intensity (µmol m−2 s −1 ), and photoperiod in the production of biomass and phycocyanin-C, allophycocyanin and phycoerythrin (C-PC, APC, and PE respectively) from a novel thermotolerant strain of Oscillatoria sp. Results show that a mixture of white with blue/red LEDs can effectively double the biomass concentration up to 1.3 g/L, while the concentration of the selected phycobiliproteins increased proportionally to biomass. Results also indicate that high light intensities (>120 µmol m−2 s −1 ) can diminish the final concentration of C-PC, APC, and PE, significantly reducing the overall biomass produced. Finally, the photoperiod analysis showed that longer light exposure times (18:6 h) improved both biomass and phycobiliproteins concentration. These results demonstrate that the application of LEDs to produce a novel strain of Oscillatoria sp can double the biomass concentration, and the photoperiod regulation can eventually enhance the final concentration of specific phycobiliproteins such as APC and PE.

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Removal of Nutrients and Pesticides from Agricultural Runoff Using Microalgae and Cyanobacteria
...
Castellanos Estupiñan, Miguel A. | 2022-02-12

The use of pesticides in agriculture has ensured the production of different crops. However, pesticides have become an emerging public health problem for Latin American countries due to their excessive use, inadequate application, toxic characteristics, and minimal residue control. The current project evaluates the ability of two strains of algae (Chlorella and Scenedesmus sp.) and one cyanobacteria (Hapalosyphon sp.) to remove excess pesticides and other nutrients present in runoff water from rice production. Different concentrations of wastewater and carbon sources (Na2CO3 and NaHCO3 ) were evaluated. According to the results, all three strains can be grown in wastewater without dilution (100%), with a biomass concentration comparable to a synthetic medium. All three strains significantly reduced the concentration of NO3 and PO4 (95 and 85%, respectively), with no difference between Na2CO3 or NaHCO3 . Finally, Chlorella sp. obtained the highest removal efficiency of the pesticide (Chlorpyrifos), followed by Scenedesmus and Hapalosyphon sp. (100, 75, and 50%, respectively). This work shows that it is possible to use this type of waste as an alternative source of nutrients to obtain biomass and metabolites of interest, such as lipids and carbohydrates, to produce biofuels.

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Browsing by Author "Samantha J., Bryan"

The Effect of LEDs on Biomass and Phycobiliproteins Production in Thermotolerant Oscillatoria sp.

Removal of Nutrients and Pesticides from Agricultural Runoff Using Microalgae and Cyanobacteria

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The Effect of LEDs on Biomass and Phycobiliproteins Production in Thermotolerant Oscillatoria sp.

Removal of Nutrients and Pesticides from Agricultural Runoff Using Microalgae and Cyanobacteria

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Browsing by Author "Samantha J., Bryan"

The Effect of LEDs on Biomass and Phycobiliproteins Production in Thermotolerant Oscillatoria sp. ﻿

Removal of Nutrients and Pesticides from Agricultural Runoff Using Microalgae and Cyanobacteria ﻿

Envíos recientes

The Effect of LEDs on Biomass and Phycobiliproteins Production in Thermotolerant Oscillatoria sp.

Removal of Nutrients and Pesticides from Agricultural Runoff Using Microalgae and Cyanobacteria

Portales Institucionales

The Effect of LEDs on Biomass and Phycobiliproteins Production in Thermotolerant Oscillatoria sp.

Removal of Nutrients and Pesticides from Agricultural Runoff Using Microalgae and Cyanobacteria