scholarly journals Iron-Containing Hypercrosslinked Composite Prepared From Polystyrene Foam Plastic in the Sorption of Toxic and Foul-Smelling Substanc

INEOS OPEN ◽  
2021 ◽  
Author(s):  
S. E. Lyubimov ◽  
◽  
A. A. Zvinchuk ◽  
A. Yu. Popov ◽  
M. M. Ilyn ◽  
...  
Keyword(s):  
Hydrogen Sulfide ◽  
Organic Solvents ◽  
Convenient Method ◽  
Hypercrosslinked Polystyrene ◽  
Plastic Waste ◽  
Foam Plastic ◽  
Polystyrene Foam ◽  
Toxic Organic Solvents

A convenient method for obtaining an iron-containing hypercrosslinked polystyrene composite based on foam plastic waste is developed. The iron-containing composite can be used for the sorption of hydrogen sulfide, toxic organic solvents, as well as foul-smelling and toxic products of degradation of natural remains—putrescine, cadaverine, indole, and skatole.

scholarly journals New fast “One-pot” Technique for the Production of Glycyrrhetinic Acid from the Roots of licorice (Glycyrrhiza glabra)

2018 ◽  
Vol 13 (7) ◽  
pp. 1934578X1801300
Author(s):  
Anna V. Lekar ◽  
Sergey N. Borisenko ◽  
Elena V. Vetrova ◽  
Elena V. Maksimenko ◽  
Salima S. Khizrieva ◽  
...  
Keyword(s):  
Organic Solvents ◽  
Subcritical Water ◽  
Low Cost ◽  
Glycyrrhetinic Acid ◽  
Glycyrrhiza Glabra ◽  
One Pot ◽  
Glycyrrhiza Glabra L ◽  
The One ◽  
Toxic Organic Solvents ◽  
Pot Technique

The aim of this work was to develop and study a fast “one-pot” procedure for the production of glycyrrhetinic acid (GLA) from the roots of licorice ( Glycyrrhiza glabra L.) using subcritical water (SBW). Technique requires no use expensive and toxic organic solvents. For the first time the new method was used for the production of glycyrrhetinic acid (aglycone of glycyrrhizic acid) by “one-pot” technique. HPLC was used to determine the quantitative compositions of the obtained products. It has been shown that variation of only one parameter of the process (temperature) allows alteration of composition of the products obtained by new “one-pot” technique. The “one-pot” procedure developed for the production of GLA in SBW is faster (12 folds) than conventional methods that use expensive and toxic organic solvents. The proposed procedure has the excellent potential for the future development of the fast and low cost technologies for the production of GLA and its derivatives in the pharmaceutical, food and cosmetic industries.

A Convenient Method for Oxidation of Organophosphorus Pesticides in Organic Solvents

2000 ◽  
Vol 84 (3) ◽  
pp. 303-309 ◽  
Author(s):  
Young Ah Kim ◽  
Hye Sung Lee ◽  
Yong Chae Park ◽  
Yong Tae Lee
Keyword(s):  
Organic Solvents ◽  
Convenient Method ◽  
Organophosphorus Pesticides

scholarly journals Methods for obtaining liposomal systems to be used in the food industry

2020 ◽  
Vol 16 (5) ◽  
pp. 28-33
Author(s):  
E. V. Lisovaya ◽  
V. V. Lisovoy ◽  
E. P. Victorova
Keyword(s):  
Organic Solvents ◽  
Food Industry ◽  
Classical Method ◽  
Alternative Methods ◽  
Food Technology ◽  
Food Ingredients ◽  
Physical Methods ◽  
Advantages And Disadvantages ◽  
Toxic Organic Solvents ◽  
Shape And Size

Currently encapsulation of food ingredients using liposomal systems formed by natural phospholipids is of greatest interest for food industry. One of the advantages of encapsulation using liposomal systems is the amphiphilicity of the phospholipids that form them, which allows both hydrophilic and hydrophobic ingredients to be encapsulated, while most other encapsulating agents can only encapsulate hydrophilic ingredients. The article reviews the existing methods for obtaining liposomal systems. It has been shown that the most common classical method for obtaining liposomes, namely, the method of a thin film hydration does not allow obtaining liposomal dispersions that are uniform in shape and size. Moreover, this method requires a large consumption of organic solvents. Physical methods have been considered that make it possible to obtain uniform in shape and size liposome dispersions, in particular, ultrasonic treatment, extrusion under pressure, and microfluidization. The advantages and disadvantages of these methods have been presented. Alternative methods of obtaining liposomal systems without the use of toxic organic solvents and detergents have been considered. It should be noted that development of methods for producing liposomal systems that could be implemented on an industrial scale for the intensive introduction of these systems in food technology is now becoming increasingly important.

Strategic planning of proteins in ionic liquids: future solvents for the enhanced stability of proteins against multiple stresses

2019 ◽  
Vol 21 (42) ◽  
pp. 23269-23282 ◽  
Author(s):  
Awanish Kumar ◽  
Kavya Bhakuni ◽  
Pannuru Venkatesu
Keyword(s):  
Ionic Liquids ◽  
Strategic Planning ◽  
Organic Solvents ◽  
Biomedical Applications ◽  
Protein Stabilization ◽  
Multiple Stresses ◽  
Toxic Organic Solvents ◽  
Enhanced Stability

Ionic liquids (ILs) represent as solvents or co-solvents for protein stabilization and refolding. Thus, ILs are replacement to toxic organic solvents in chemical, biotechnology and biomedical applications.

Mechanisms of resistance of whole cells to toxic organic solvents

1994 ◽  
Vol 12 (10) ◽  
pp. 409-415 ◽  
Author(s):  
Hermann J. Heipieper ◽  
Frans J. Weber ◽  
Jan Sikkema ◽  
Heribert Keweloh ◽  
Jan A.M. de Bont
Keyword(s):  
Organic Solvents ◽  
Mechanisms Of Resistance ◽  
Whole Cells ◽  
Toxic Organic Solvents

A Technique for Obtaining the Infrared Absorption Spectra of High Gel Rubbers

1957 ◽  
Vol 30 (1) ◽  
pp. 352-353
Author(s):  
Bernard M. Mitzner
Keyword(s):  
Sample Preparation ◽  
Polymer Solution ◽  
Absorption Spectra ◽  
Organic Solvents ◽  
Rock Salt ◽  
Infrared Absorption ◽  
Convenient Method ◽  
Benzene Solution ◽  
Liquid Cell ◽  
Infrared Absorption Spectra

Abstract Several techniques have been previously described for obtaining the infrared absorption spectra of various types of rubbers. The most convenient method is to dissolve the substance under investigation in a suitable solvent and obtain the spectrum as a solution employing a sealed liquid cell. Another technique that is commonly employed is to evaporate a benzene solution of the polymer to dryness on a rock salt plate, thus obtaining a film. A more time consuming procedure consists of floating a polymer solution on a mercury pool which can subsequently be picked up by a steel frame and studied as a film. All the above procedures, although useful when investigating low gel rubbers, cannot be successfully employed with high gel rubbers. Modified polybutadiene crumb rubbers form extremely stable gels, and are almost completely insoluble in all common organic solvents. Because of this great insolubility, one is limited in infrared sample preparation. Attempts to employ the KBr pressed disc technique have met with very little success in our laboratory.

New Advances in the Use of Multifunctional Nanomaterials in Conservation-Restoration of Artistic and Archaeological Heritage

2019 ◽  
Vol 286 ◽  
pp. 75-94
Author(s):  
Amara Carvajal-Perez
Keyword(s):  
Organic Solvents ◽  
Ph Regulation ◽  
The State ◽  
Archaeological Heritage ◽  
Global Vision ◽  
Multifunctional Nanomaterials ◽  
Inorganic Supports ◽  
New Procedures ◽  
Toxic Organic Solvents

In recent years, the development of new procedures and solutions in the field of conservation has been very significant. The purpose of this article is to collect the main contributions of nanotechnology, in its multifunctional solutions applied in heritage, to offer a global vision of the state of the matter for both scientists and restaurateurs.Nanomaterials offer some advantages over traditional products, improved compatibility and efficiency and reducing the use of toxic organic solvents for humans and the environment. Solutions have been developed for both inorganic supports and organic supports for artistic, architectural and archaeological heritage. Especially relevant are the advances in consolidation processes, pH regulation and / or cleaning / elimination of alteration products on murals, frescoes or stone and in materials composed of cellulose and collagen.Also, nanotechnology is still a recent science and has yet to answer certain questions about its use protocols and reduce the possible risks to health.

scholarly journals Study of an Acid-Free Technique for the Preparation of Glycyrrhetinic Acid from Ammonium Glycyrrhizinate in Subcritical Water

2015 ◽  
Vol 10 (11) ◽  
pp. 1934578X1501001 ◽  
Author(s):  
Anna V. Lekar ◽  
Sergey N. Borisenko ◽  
Elena V. Vetrova ◽  
Olga V. Filonova ◽  
Elena V. Maksimenko ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Nmr Spectroscopy ◽  
Organic Solvents ◽  
Glycyrrhizic Acid ◽  
Subcritical Water ◽  
Environmentally Friendly ◽  
Glycyrrhetinic Acid ◽  
Hydrolysis Products ◽  
Pharmaceutical Plant ◽  
Toxic Organic Solvents

The aim of this work was to study an application of a previously developed expedient acid-free technique for the preparation of glycyrrhetinic acid from ammonium glycyrrhizinate that requires no use of acids and toxic organic solvents. Subcritical water that serves as a reactant and a solvent was used in order to obtain glycyrrhetinic acid in good yields starting from ammonium glycyrrhizinate. It has been shown that variation of only one parameter of the process (temperature) allows alteration to thecomposition of the hydrolysis products. A new method was used for the synthesis of glycyrrhetinic acid (glycyrrhizic acid aglycone) and its monoglycoside. HPLC combined with mass spectrometry and NMR spectroscopy were used to determine the quantitative and qualitative compositions of the obtained products. The method developed for the production of glycyrrhetinic acid in subcritical water is environmentally friendly and faster than conventional hydrolysis methods that use acids and expensive and toxic organic solvents. The proposed technique has a potential for the future development of inexpensive and environmentally friendly technologies for production of new pharmaceutical plant-based substances.

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