Novel Products from Microalgae

Author(s):  
G. Subashini ◽  
S. Bhuvaneswari
Keyword(s):  
1995 ◽  
Vol 60 (1) ◽  
pp. 104-114 ◽  
Author(s):  
Boyd L. Earl ◽  
Richard L. Titus

Previous reports on the thermal or CO2-laser induced decomposition of trichloroethylene have identified only one condensible product, hexachlorobenzene (in addition to HCl and mono- and dichloroacetylene). We have found that trichloroethylene vapor exposed to cw irradiation on the P(24) line of the (001 - 100) band of the CO2 laser at incident power levels from 8 - 17 W produces numerous products, of which the 13 major ones have been identified using IR, GC/MS, GC/FTIR, and NMR methods. All of these products have 4, 6, or 8 carbons, are highly unsaturated, and are completely chlorinated or contain a single hydrogen. C4HCl5 and C6Cl6 isomers (three of each) account for S 55% to 85% of total products (based on peak areas in the total ion chromatograms in GC/MS runs), depending on reaction conditions. In addition to characterizing the products, we discuss the dependence of the product distribution on laser power, irradiation time, and cell geometry, and we outline a possible mechanism.


Polymers ◽  
2021 ◽  
Vol 13 (12) ◽  
pp. 2001
Author(s):  
Maresa Sonnabend ◽  
Suzanne G. Aubin ◽  
Annette M. Schmidt ◽  
Marc C. Leimenstoll

Due to reasons of sustainability and conservation of resources, polyurethane (PU)-based systems with preferably neutral carbon footprints are in increased focus of research and development. The proper design and development of bio-based polyols are of particular interest since such polyols may have special property profiles that allow the novel products to enter new applications. Sophorolipids (SL) represent a bio-based toolbox for polyol building blocks to yield diverse chemical products. For a reasonable evaluation of the potential for PU chemistry, however, further investigations in terms of synthesis, derivatization, reproducibility, and reactivity towards isocyanates are required. It was demonstrated that SL can act as crosslinker or as plasticizer in PU systems depending on employed stoichiometry. (ω-1)-hydroxyl fatty acids can be derived from SL and converted successively to polyester polyols and PU. Additionally, (ω-1)-hydroxyl fatty acid azides can be prepared indirectly from SL and converted to A/B type PU by Curtius rearrangement.


1979 ◽  
Vol 57 (23) ◽  
pp. 3171-3172 ◽  
Author(s):  
Josef Bojes ◽  
Tristram Chivers ◽  
Greg MacLean ◽  
Richard T. Oakley ◽  
A. Wallace Cordes

Two novel products, (Ph3P=N)2S4N4 and (Ph3P=N)3S+S4N5−, have been isolated from the reaction of triphenylphosphine with S4N4; an X-ray structural determination of (Ph3P=N)2S4N4 shows it to consist of a 1,5-disubstituted S4N4 ring with the exocyclic substituents in an axial, equatorial configuration.


2021 ◽  
Author(s):  
Safak OZHAN KOCAKAYA ◽  
Ismail Yener ◽  
Abdulselam Ertaş ◽  
Mehmet Karakaplan

Abstract A series of biological active compounds 1–14 have been synthesized and used as potential inhibitors for AChE and BuChE. Potential inhibitor efficacy of these molecules to the target enzymes have been searched in vitro and theoretical by dock and molecular dynamic calculations. The results show that chiral amino alcohol compounds 6, 7 and 9 exhibited good value for medication scores. Among the tested compounds the best inhibition activities have been obtained with compounds 6 for AChE and BuChE by 87.68 and 92.46 % values, respectively at 50µg/mL concentration. The anticipated value of 6 also justified superb correlation with invitro statistics and it could be taken into consideration as drug candidate molecule for designing of novel drug. Potential inhibitory outcomes of those molecules on the right track proteins were investigated the use of Docking and Molecular Dynamics calculations. Dock score evaluation and Lipinski parameters have been proven those ligands are ability inhibitors against applicable enzymes. Our findings endorse that related compounds can be applied as a capacity supply of anti-alzheimer active molecules for designing novel products.


2009 ◽  
Vol 31 (1) ◽  
pp. 7-46 ◽  
Author(s):  
Todd H. Chiles ◽  
Christopher S. Tuggle ◽  
Jeffery S. McMullen ◽  
Leonard Bierman ◽  
Daniel W. Greening

We develop a new perspective on entrepreneurship as a dynamic, complex, subjective process of creative organizing. Our approach, which we call ‘dynamic creation’, synthesizes core ideas from Austrian ‘radical subjectivism’ with complementary ideas from psychology (empathy), strategy and organization theory (modularity), and complexity theory (self-organization). We articulate conjectures at multiple levels about how such dynamic creative processes as empathizing, modularizing, and self-organizing help organize subjectively imagined novel ideas in entrepreneurs’ minds, heterogeneous resources in their firms, and disequilibrium markets in their environments. In our most provocative claim, we argue that entrepreneurs, by imagining divergent futures and (re)combining heterogeneous resources to create novel products, drive far-from-equilibrium market processes to create not market anarchy but market order. We conclude our exposition of each dynamic creative process by offering one possible direction for future research and articulating additional conjectures that help point the way. Throughout, we draw examples from CareerBuilder—a firm that has played a major role in creating and shaping the online model in the job search/recruiting industry—and its industry rivals (e.g. Monster, Yahoo’s HotJobs) to illustrate selected concepts and relationships in dynamic entrepreneurial creation.


2019 ◽  
Vol 10 (11) ◽  
pp. 3208-3216 ◽  
Author(s):  
Deepak Dange ◽  
Andrew R. Gair ◽  
Dafydd D. L. Jones ◽  
Martin Juckel ◽  
Simon Aldridge ◽  
...  

The sometimes redox reversible 1,2-additions of magnesium(i) dimers across several alkenes and one alkyne yield 1,2-dimagnesioethanes and a 1,2-dimagnesioethene. Treatment of these with bulky amido metal halide precursors affords novel products via three reactivity modes.


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