In situ formation of AuNPs using fatty N-acylamino hydrazide organogelators as templates

2019 ◽  
Vol 43 (1) ◽  
pp. 295-303 ◽  
Author(s):  
Renata Ongaratto ◽  
Naiane Conte ◽  
Caroline R. Montes D’Oca ◽  
Rafael C. Brinkerhoff ◽  
Caroline Pires Ruas ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Gold Nanoparticles ◽  
Low Molecular Weight ◽  
In Situ Formation ◽  
First Time

This work reports, for the first time, the synthesis of new fatty N-acylamino hydrazides and demonstrates the activity of these compounds as low-molecular-weight organic gelators and templates for preparation of gold nanoparticles (AuNPs).

scholarly journals In situ formation of low molecular weight organogelators for slick solidification

RSC Advances ◽  
2020 ◽  
Vol 10 (23) ◽  
pp. 13369-13373
Author(s):  
Jean-Marie R. Peron ◽  
Hollie Packman ◽  
William J. Peveler ◽  
Joseph C. Bear
Keyword(s):  
Molecular Weight ◽  
Low Molecular Weight ◽  
In Situ Formation ◽  
Low Molecular Weight Organogelators

Instantaneous gelation: a reactive precursors approach for the near-instant gelation of oil-on-water slicks down to −5 °C.

scholarly journals Water-soluble low-molecular-weight cellulose chains radially oriented on gold nanoparticles

Cellulose ◽  
2011 ◽  
Vol 18 (4) ◽  
pp. 929-936 ◽  
Author(s):  
Yukiko Enomoto-Rogers ◽  
Hiroshi Kamitakahara ◽  
Arata Yoshinaga ◽  
Toshiyuki Takano
Keyword(s):  
Molecular Weight ◽  
Gold Nanoparticles ◽  
Water Soluble ◽  
Low Molecular Weight

scholarly journals Preparation of Porous Polymers by ”in Situ Precipitation” Using Low Molecular Weight Gelators

2002 ◽  
Vol 34 (6) ◽  
pp. 474-477 ◽  
Author(s):  
Masahiro Suzuki ◽  
Yasuhiko Sakakibara ◽  
Satoshi Kobayashi ◽  
Mutsumi Kimura ◽  
Hirofusa Shirai ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Porous Polymers ◽  
Low Molecular Weight ◽  
Low Molecular Weight Gelators

Instabilities in the System NMMO/Water/Cellulose (Lyocell Process) Caused by Polonowski Type Reactions

Holzforschung ◽  
2002 ◽  
Vol 56 (2) ◽  
pp. 199-208 ◽  
Author(s):  
Thomas Rosenau ◽  
Antje Potthast ◽  
Andreas Hofinger ◽  
Herbert Sixta ◽  
Paul Kosma
Keyword(s):  
Molecular Weight ◽  
Acetic Acid ◽  
Exchange Resin ◽  
Degradation Products ◽  
Ion Exchange Resin ◽  
Low Molecular Weight ◽  
Acid Component ◽  
Degradation Reactions ◽  
Polyglucuronic Acid

Summary Polonowski type degradation reactions are a major reason for the frequently observed instability of solutions of cellulose in N-methylmorpholine-N-oxide monohydrate (NMMO, 1). The degradation is induced by degradation products of cellulose and NMMO generated in situ in the Lyocell system. The presence of both an amine component, such as morpholine or N-methylmorpholine, and an acid component is required for the decomposition process to proceed. The latter might be a low-molecular-weight compound, such as formic acid, acetic acid or gluconic acid, or also a high-molecular-weight acid, such as polyglucuronic acid or ion exchange resin.

In Situ Formation of Dual-Phase Thermosensitive Ultrasmall Gold Nanoparticles

2015 ◽  
Vol 21 (28) ◽  
pp. 10220-10225 ◽  
Author(s):  
Zidong He ◽  
Aiqing Zhong ◽  
Hui Zhang ◽  
Linfeng Xiong ◽  
Yang Xu ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Dual Phase ◽  
In Situ Formation

scholarly journals Neuroprotective Metabolites from Vietnamese Marine Derived Fungi of Aspergillus and Penicillium Genera

Marine Drugs ◽  
2020 ◽  
Vol 18 (12) ◽  
pp. 608
Author(s):  
Elena V. Girich ◽  
Anton N. Yurchenko ◽  
Olga F. Smetanina ◽  
Phan Thi Hoai Trinh ◽  
Ngo Thi Duy Ngoc ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Secondary Metabolites ◽  
Cell Viability ◽  
Chemical Structure ◽  
Aspergillus Terreus ◽  
Marine Fungi ◽  
2D Nmr ◽  
Natural Source ◽  
Low Molecular Weight ◽  
First Time

Low molecular weight secondary metabolites of marine fungi Aspergillus flocculosus, Aspergillus terreus and Penicillium sp. from Van Phong and Nha Trang Bays (Vietnam) were studied and a number of polyketides, bis-indole quinones and terpenoids were isolated. The structures of the isolated compounds were determined by 1D and 2D NMR and HR-ESI-MS techniques. Stereochemistry of some compounds was established based on ECD data. A chemical structure of asterriquinone F (6) was thoroughly described for the first time. Anthraquinone (13) was firstly obtained from a natural source. Neuroprotective influences of the isolated compounds against 6-OHDA, paraquat and rotenone toxicity were investigated. 4-Hydroxyscytalone (1), 4-hydroxy-6-dehydroxyscytalone (2) and demethylcitreoviranol (3) have shown significant increasing of paraquat- and rotenone-treated Neuro-2a cell viability and anti-ROS activity.

In Situ Formation of Gold Nanoparticles within a Polymer Particle and Their Catalytic Activities in Various Chemical Reactions

ChemPhysChem ◽  
2018 ◽  
Vol 20 (1) ◽  
pp. 70-77 ◽  
Author(s):  
Wongi Jang ◽  
Richard Taylor ◽  
Pascal N. Eyimegwu ◽  
Hongsik Byun ◽  
Jun-Hyun Kim
Keyword(s):  
Gold Nanoparticles ◽  
Chemical Reactions ◽  
Polymer Particle ◽  
Catalytic Activities ◽  
In Situ Formation

Paper-based device for the colorimetric assay of bilirubin based on in-situ formation of gold nanoparticles

2019 ◽  
Vol 187 (1) ◽  
Author(s):  
Resmi P. Edachana ◽  
Abishek Kumaresan ◽  
Vidhya Balasubramanian ◽  
Ramachandran Thiagarajan ◽  
Bipin G. Nair ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Colorimetric Assay ◽  
In Situ Formation

scholarly journals Cabozantinib and apixaban: an hitherto unreported interaction

2019 ◽  
Vol 8 (1) ◽  
Author(s):  
Daniele Santini ◽  
Fabrizio Citarella ◽  
Bruno Vincenzi ◽  
Marco Russano ◽  
Giuseppe Tonini ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Renal Cell Carcinoma ◽  
Oral Anticoagulant ◽  
Low Molecular Weight Heparin ◽  
New Drugs ◽  
Low Molecular Weight ◽  
Direct Oral Anticoagulant ◽  
Anticancer Treatment ◽  
Pharmaceutical Agents ◽  
First Time

Abstract The use of direct oral anticoagulant in cancer patients is an emerging issue, which seems to be an alternative to low molecular weight heparin. Every year several new drugs are approved as anticancer treatment with possible drug-drug interaction with other drugs such as oral anticoagulant. We describe, for the first time, a case of neutropenia and thrombocytopenia in a patient in treatment with cabozantinib, a novel anticancer treatment used in metastatic renal cell carcinoma, and apixaban with promptly resumption of the toxicity after the interruption of cabozantinib. This case suggest a possible interaction between these two pharmaceutical agents, which merit caution considering the spreading of the two drugs.

scholarly journals A simple method for the production of low molecular weight hyaluronan by in situ degradation in fermentation broth

e-Polymers ◽  
2019 ◽  
Vol 19 (1) ◽  
pp. 477-481
Author(s):  
Jianfeng Mei ◽  
Zhihong Dong ◽  
Yu Yi ◽  
Yanlu Zhang ◽  
Guoqing Ying
Keyword(s):  
Molecular Weight ◽  
Enzymatic Degradation ◽  
Fermentation Broth ◽  
Low Molecular Weight ◽  
Streptococcus Zooepidemicus ◽  
Medium Ph ◽  
Simple Method ◽  
Suitable Temperature ◽  
In Situ Degradation

AbstractFermentation of hyaluronan (HA) by Streptococcus zooepidemicus was carried out in a 10-L fermentor. When the medium pH was controlled at 7.0 and the temperature was maintained at 38°C for 12 h followed by 35°C for 8 h, the yield of HA was 4.83 g/L with a molecular weight of 1,890 kDa. After the cells were removed by centrifugation from the fermentation broth, HA was slowly degraded to low molecular weight HA by hyaluronidase at a suitable temperature without a decrease in HA concentration. If the time and temperature for enzymatic degradation were controlled, the desired low molecular weight HA could be obtained by in situ degradation in the fermentation broth. The method does not require the addition of exogenous hyaluronidase, and is a simple way to produce low molecular weight HA.

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