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Nanocellulose leaf-like zeolitic imidazolate framework (ZIF-L) foams for selective capture of carbon dioxide

Research Abstract

The last decades have been witness of an ever-growing interests for the synthesis and application of metal–organic frameworks (MOFs). However, most of the current synthetic procedures produce MOFs in powder state. In this work, hybrid foams were fabricated via in situ synthesis of leaf-like zeolitic imidazolate frameworks (ZIF-L) into nanocellulose at room temperature using water as solvent, followed by a gelatin matrix incorporation and freeze-drying. The foams are ultralight weight and are highly porous with densities ranging from 19.18 to 37.4 kg·m−3. The shapeability, hierarchical porosity, and low density of the formed foams offer promising potentials for applications such as CO2 sorption. The dispersion of ZIF-L into the cellulose network increases the material accessibility and may open new venues for further MOFs processing.

Research Authors
Luis Valencia, Hani Nasser Abdelhamid
Research Department
Research Journal
Carbohydrate Polymers

Research Member
Research Pages
338-345
Research Publisher
Elsevier
Research Rank
1
Research Vol
213
Research Website
https://www.sciencedirect.com/science/article/pii/S0144861719302772
Research Year
2019

Novel resources of Taxol from endophytic and entomopathogenic fungi:
Isolation, characterization and LC-Triple mass spectrometric quantification

Research Abstract

This work presents a second-to-none method for Taxol isolation from the Endophytic fungus Cladosporium
sphaerospermum (AUMC 6896) and the Entomopathogenic fungus Metarizium anisopliae (AUMC 5130). The
extracts were analyzed by high performance liquid chromatography (HPLC) and Liquid chromatography coupled
to tandem mass spectrometry (LC-MS/MS) using positive electrospray ionization (ESI) in the multiple reaction
monitoring (MRM) mode. This is rapid, consistent, reproducible, accurate, and sensitive for quantifying Taxol
across multiple samples. The yield of crude Taxol product obtained from Potato Dextrose broth (PDB) medium
inoculated with Cladosporium sphaerospermu and Metarizium anisopliae was found to be 3.732, and
0.0023 μg L−1 respectively. The yield can be improved by adding ammonium acetate or salicylic acid to the
culture broth. Addition of ammonium acetate (AA) (20 mg L−1
) to culture media resulted in an increase of Taxol
yield to 30.365 and 27.289 μg L−1 respectively. Production of Taxol was 29.844 and 67.254 μg L−1 for the two
fungus species when ammonium acetate was substituted by 90 mg L−1 salicylic acid (SA). Adding both AA
(20 mg L−1
) and SA (90 mg L−1
) to the culture media resulted in an increase of the Taxol yield to 4.054 and
116.373 μg L−1 respectively.
Our proposed analytical method offers very fast (3 min) quantitation of Taxol in comparison with other
published methods. These findings represent a new bioprospecting of the endophytic fungi that may serve as a
potential material for the production of Taxol for anticancer treatment.

Research Authors
Nagwa Abo EL-Maalia,b,Ahmed M. Mohrramc,d, Hussein El-Kashefa, Khaled Gamala
Research Journal
Talanta
Research Pages
pp. 466–474
Research Publisher
NULL
Research Rank
1
Research Vol
Vol. 190
Research Website
NULL
Research Year
2018

Novel resources of Taxol from endophytic and entomopathogenic fungi:
Isolation, characterization and LC-Triple mass spectrometric quantification

Research Abstract

This work presents a second-to-none method for Taxol isolation from the Endophytic fungus Cladosporium
sphaerospermum (AUMC 6896) and the Entomopathogenic fungus Metarizium anisopliae (AUMC 5130). The
extracts were analyzed by high performance liquid chromatography (HPLC) and Liquid chromatography coupled
to tandem mass spectrometry (LC-MS/MS) using positive electrospray ionization (ESI) in the multiple reaction
monitoring (MRM) mode. This is rapid, consistent, reproducible, accurate, and sensitive for quantifying Taxol
across multiple samples. The yield of crude Taxol product obtained from Potato Dextrose broth (PDB) medium
inoculated with Cladosporium sphaerospermu and Metarizium anisopliae was found to be 3.732, and
0.0023 μg L−1 respectively. The yield can be improved by adding ammonium acetate or salicylic acid to the
culture broth. Addition of ammonium acetate (AA) (20 mg L−1
) to culture media resulted in an increase of Taxol
yield to 30.365 and 27.289 μg L−1 respectively. Production of Taxol was 29.844 and 67.254 μg L−1 for the two
fungus species when ammonium acetate was substituted by 90 mg L−1 salicylic acid (SA). Adding both AA
(20 mg L−1
) and SA (90 mg L−1
) to the culture media resulted in an increase of the Taxol yield to 4.054 and
116.373 μg L−1 respectively.
Our proposed analytical method offers very fast (3 min) quantitation of Taxol in comparison with other
published methods. These findings represent a new bioprospecting of the endophytic fungi that may serve as a
potential material for the production of Taxol for anticancer treatment.

Research Authors
Nagwa Abo EL-Maalia,b,Ahmed M. Mohrramc,d, Hussein El-Kashefa, Khaled Gamala
Research Department
Research Journal
Talanta
Research Pages
pp. 466–474
Research Publisher
NULL
Research Rank
1
Research Vol
Vol. 190
Research Website
NULL
Research Year
2018

Novel resources of Taxol from endophytic and entomopathogenic fungi:
Isolation, characterization and LC-Triple mass spectrometric quantification

Research Abstract

This work presents a second-to-none method for Taxol isolation from the Endophytic fungus Cladosporium
sphaerospermum (AUMC 6896) and the Entomopathogenic fungus Metarizium anisopliae (AUMC 5130). The
extracts were analyzed by high performance liquid chromatography (HPLC) and Liquid chromatography coupled
to tandem mass spectrometry (LC-MS/MS) using positive electrospray ionization (ESI) in the multiple reaction
monitoring (MRM) mode. This is rapid, consistent, reproducible, accurate, and sensitive for quantifying Taxol
across multiple samples. The yield of crude Taxol product obtained from Potato Dextrose broth (PDB) medium
inoculated with Cladosporium sphaerospermu and Metarizium anisopliae was found to be 3.732, and
0.0023 μg L−1 respectively. The yield can be improved by adding ammonium acetate or salicylic acid to the
culture broth. Addition of ammonium acetate (AA) (20 mg L−1
) to culture media resulted in an increase of Taxol
yield to 30.365 and 27.289 μg L−1 respectively. Production of Taxol was 29.844 and 67.254 μg L−1 for the two
fungus species when ammonium acetate was substituted by 90 mg L−1 salicylic acid (SA). Adding both AA
(20 mg L−1
) and SA (90 mg L−1
) to the culture media resulted in an increase of the Taxol yield to 4.054 and
116.373 μg L−1 respectively.
Our proposed analytical method offers very fast (3 min) quantitation of Taxol in comparison with other
published methods. These findings represent a new bioprospecting of the endophytic fungi that may serve as a
potential material for the production of Taxol for anticancer treatment.

Research Authors
Nagwa Abo EL-Maalia,b,Ahmed M. Mohrramc,d, Hussein El-Kashefa, Khaled Gamala
Research Department
Research Journal
Talanta
Research Member
Research Pages
pp. 466–474
Research Publisher
NULL
Research Rank
1
Research Vol
Vol. 190
Research Website
NULL
Research Year
2018

On The Pitfalls of Charge Simulation Technique in Field Calculations.

Research Abstract

NULL

Research Authors
M. Abdel-Salam, Azza Hashem and A. Ahmed
Research Department
Research Journal
Proceeding of the 41st International Universities Power Engineering Conference, Newcastle, UK,
Research Pages
936-940
Research Publisher
Proceeding of the 41st International Universities Power Engineering Conference, Newcastle, UK,
Research Rank
3
Research Vol
vol. 1
Research Website
NULL
Research Year
2006

On The Pitfalls of Charge Simulation Technique in Field Calculations.

Research Abstract

NULL

Research Authors
M. Abdel-Salam, Azza Hashem and A. Ahmed
Research Journal
Proceeding of the 41st International Universities Power Engineering Conference, Newcastle, UK,
Research Pages
936-940
Research Publisher
Proceeding of the 41st International Universities Power Engineering Conference, Newcastle, UK,
Research Rank
3
Research Vol
vol. 1
Research Website
NULL
Research Year
2006

On The Pitfalls of Charge Simulation Technique in Field Calculations.

Research Abstract

NULL

Research Authors
M. Abdel-Salam, Azza Hashem and A. Ahmed
Research Journal
Proceeding of the 41st International Universities Power Engineering Conference, Newcastle, UK,
Research Pages
936-940
Research Publisher
Proceeding of the 41st International Universities Power Engineering Conference, Newcastle, UK,
Research Rank
3
Research Vol
vol. 1
Research Website
NULL
Research Year
2006

17. Corona Characteristics in Conductor-to-Plane Gaps as Influenced by Nearby Floating Metallic Grids.


Research Abstract

NULL

Research Authors
Azza Hashem, M. Abdel-Salam, A. Turky and A. Abdel Aziz
Research Journal
Proceeding of the Annual Report on Electrical Insulation and Dielectric Phenomena, Kansas City, USA,
Research Pages
764-767
Research Publisher
Proceeding of the Annual Report on Electrical Insulation and Dielectric Phenomena, Kansas City, USA
Research Rank
3
Research Vol
vol 1
Research Website
NULL
Research Year
2006

17. Corona Characteristics in Conductor-to-Plane Gaps as Influenced by Nearby Floating Metallic Grids.


Research Abstract

NULL

Research Authors
Azza Hashem, M. Abdel-Salam, A. Turky and A. Abdel Aziz
Research Department
Research Journal
Proceeding of the Annual Report on Electrical Insulation and Dielectric Phenomena, Kansas City, USA,
Research Pages
764-767
Research Publisher
Proceeding of the Annual Report on Electrical Insulation and Dielectric Phenomena, Kansas City, USA
Research Rank
3
Research Vol
vol 1
Research Website
NULL
Research Year
2006
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