scholarly journals Evolutionary divergence of photoprotection in the green algal lineage: a plant‐like violaxanthin de‐epoxidase enzyme activates the xanthophyll cycle in the green alga Chlorella vulgaris modulating photoprotection

2020 ◽  
Vol 228 (1) ◽  
pp. 136-150 ◽  
Author(s):  
Laura Girolomoni ◽  
Francesco Bellamoli ◽  
Gabriel Cruz Valbuena ◽  
Federico Perozeni ◽  
Cosimo D'Andrea ◽  
...  
Keyword(s):  
Green Alga ◽  
Chlorella Vulgaris ◽  
Xanthophyll Cycle ◽  
Evolutionary Divergence ◽  
Green Algal ◽  
Green Alga Chlorella

High Catalytic Activity of Pd Nanoparticles Synthesized from Green Alga Chlorella vulgaris in Buchwald-hartwig Synthesis of N-Aryl Piperazines

2019 ◽  
Vol 7 (1) ◽  
pp. 23-33
Author(s):  
Vaibhav Mishra ◽  
Anju Arya ◽  
Tejpal Singh Chundawat
Keyword(s):  
Catalytic Activity ◽  
Green Alga ◽  
Chlorella Vulgaris ◽  
Direct Synthesis ◽  
Coupling Reaction ◽  
Pd Nanoparticles ◽  
High Catalytic Activity ◽  
Pd Nanoparticle ◽  
Green Algal ◽  
Green Alga Chlorella

Background: The N-aryl piperazines are an important component of many drug products used for the treatment of malaria, depression, anxiety and Parkinson diseases. Buchwald-Hartwig amination is the latest and well-known reaction for Pd catalyzed direct synthesis of N-aryl piperazine from aryl halides. Although several Pd-ligand systems have already been discovered for this conversion, Pd nanoparticles are recently being used for this useful coupling reaction due to their recyclability and durability. Metal nanoparticles show enhanced catalytic activity compared to their bulk counterparts due to increased surface area at the edges and corners. The use of green algal extract in place of chemical ligands makes this process more environment-friendly and cost-effective. In this research, Pd nanoparticles synthesized using green alga C. Vulgaris were utilized as an alternative approach for the coupling reaction during the preparation of N-aryl piperazines. Methods: Synthesized Pd nanoparticles from C. Vulgaris were characterized by FTIR, SEM and XRD techniques. The catalytic activity of the synthesized nanoparticles was monitored for the synthesis of N-aryl piperazines by Buchwald-Hartwig reaction. The synthesized N-aryl piperazines were characterized by NMR, FTIR and mass analysis. Results: A very good catalytic activity of the synthesized Pd nanoparticles from green alga Chlorella vulgaris extract was observed. The green alga not only reduces the size of the Pd metal to nanoparticles but also acts as a green ligand for reduction of Pd(II) to Pd(0) during nanoparticle synthesis. Using this Pd nanoparticles-green ligand system, several N-aryl piperazines were synthesized in good to excellent yields. Reaction conditions for better conversion were optimized. The comparative advantage of the catalytic system with recently published works on Buchwald-Hartwig C-N coupling reaction is given. Recyclability and durability of the catalyst were explored and the results were found to be promising. A plausible mechanism of Pd nanoparticle catalyzed reaction is also proposed. Conclusion: Catalytic activity of the Pd nanoparticle synthesized from Chlorella vulagris in the synthesis of N-aryl piperazines by Buchwald-Hartwig reaction is reported first time to the best of our knowledge and understanding. The green approach of Pd catalyst to facilitate the reaction and its environmental impact is the main characteristic of the process.

Electrical flocculation of the unicellular green alga Chlorella vulgaris Beijerinck

1981 ◽  
Vol 11 ◽  
pp. 187-195 ◽  
Author(s):  
H.D. Kumar ◽  
P.K. Yadava ◽  
J.P. Gaur
Keyword(s):  
Green Alga ◽  
Chlorella Vulgaris ◽  
Unicellular Green Alga ◽  
Green Alga Chlorella

scholarly journals A new inducible expression system in a transformed green alga, Chlorella vulgaris

2011 ◽  
Vol 10 (4) ◽  
pp. 3427-3434 ◽  
Author(s):  
Y.F. Niu ◽  
M.H. Zhang ◽  
W.H. Xie ◽  
J.N. Li ◽  
Y.F. Gao ◽  
...  
Keyword(s):  
Green Alga ◽  
Chlorella Vulgaris ◽  
Expression System ◽  
Inducible Expression ◽  
Inducible Expression System ◽  
Green Alga Chlorella

Chloroplast Genome Structure of Unicellular Green Alga Chlorella Vulgaris C-27

1995 ◽  
pp. 2583-2586
Author(s):  
J. Tsudzuki ◽  
K. Nakashima ◽  
M. Ito ◽  
T. Tsudzuki ◽  
M. Horihata ◽  
...  
Keyword(s):  
Chloroplast Genome ◽  
Green Alga ◽  
Chlorella Vulgaris ◽  
Genome Structure ◽  
Unicellular Green Alga ◽  
Green Alga Chlorella

Ecotoxicological effects of sulfonamides and fluoroquinolones and their removal by a green alga (Chlorella vulgaris) and a cyanobacterium (Chrysosporum ovalisporum)

2020 ◽  
Vol 263 ◽  
pp. 114554 ◽  
Author(s):  
Shan Chen ◽  
Wei Zhang ◽  
Jiayuan Li ◽  
Mingzhe Yuan ◽  
Jiahui Zhang ◽  
...  
Keyword(s):  
Green Alga ◽  
Chlorella Vulgaris ◽  
Ecotoxicological Effects ◽  
Green Alga Chlorella

Evaluation of toxic effects of platinum-based antineoplastic drugs (cisplatin, carboplatin and oxaliplatin) on green alga Chlorella vulgaris

2020 ◽  
Vol 223 ◽  
pp. 105495 ◽  
Author(s):  
Samineh Dehghanpour ◽  
Hamid Reza Pourzamani ◽  
Mohammad Mehdi Amin ◽  
Karim Ebrahimpour
Keyword(s):  
Green Alga ◽  
Chlorella Vulgaris ◽  
Toxic Effects ◽  
Antineoplastic Drugs ◽  
Green Alga Chlorella

Biosorption of reactive dyes on the green alga Chlorella vulgaris

2005 ◽  
Vol 40 (3-4) ◽  
pp. 1347-1361 ◽  
Author(s):  
Zümriye Aksu ◽  
Sevilay Tezer
Keyword(s):  
Green Alga ◽  
Chlorella Vulgaris ◽  
Reactive Dyes ◽  
Green Alga Chlorella
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