scholarly journals Marine-Derived Surface Active Agents: Health-Promoting Properties and Blue Biotechnology-Based Applications

Biomolecules ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 885 ◽  
Author(s):  
Ioannis Anestopoulos ◽  
Despina-Evgenia Kiousi ◽  
Ariel Klavaris ◽  
Monica Maijo ◽  
Annabel Serpico ◽  
...  
Keyword(s):  
Adverse Effect ◽  
Molecular Weight ◽  
Biomedical Applications ◽  
Aquatic Organisms ◽  
Biological Properties ◽  
Review Article ◽  
Surface Active Agents ◽  
Health Promoting ◽  
Surface Active ◽  
Solid Water

Surface active agents are characterized for their capacity to adsorb to fluid and solid-water interfaces. They can be classified as surfactants and emulsifiers based on their molecular weight (MW) and properties. Over the years, the chemical surfactant industry has been rapidly increasing to meet consumer demands. Consequently, such a boost has led to the search for more sustainable and biodegradable alternatives, as chemical surfactants are non-biodegradable, thus causing an adverse effect on the environment. To these ends, many microbial and/or marine-derived molecules have been shown to possess various biological properties that could allow manufacturers to make additional health-promoting claims for their products. Our aim, in this review article, is to provide up to date information of critical health-promoting properties of these molecules and their use in blue-based biotechnology (i.e., biotechnology using aquatic organisms) with a focus on food, cosmetic and pharmaceutical/biomedical applications.

scholarly journals Surface Active Agents and Their Health-Promoting Properties: Molecules of Multifunctional Significance

Pharmaceutics ◽  
2020 ◽  
Vol 12 (7) ◽  
pp. 688 ◽  
Author(s):  
Ioannis Anestopoulos ◽  
Despoina Eugenia Kiousi ◽  
Ariel Klavaris ◽  
Alex Galanis ◽  
Karina Salek ◽  
...  
Keyword(s):  
Underlying Mechanism ◽  
Consumer Products ◽  
Fluid Interfaces ◽  
Foaming Agents ◽  
Chemical Derivatives ◽  
Industrial Sectors ◽  
Surface Active Agents ◽  
Health Promoting ◽  
Anti Oxidant ◽  
Surface Active

Surface active agents (SAAs) are molecules with the capacity to adsorb to solid surfaces and/or fluid interfaces, a property that allows them to act as multifunctional ingredients (e.g., wetting and dispersion agents, emulsifiers, foaming and anti-foaming agents, lubricants, etc.) in a widerange of the consumer products of various industrial sectors (e.g., pharmaceuticals, cosmetics, personal care, detergents, food, etc.). Given their widespread utilization, there is a continuously growing interest to explore their role in consumer products (relevant to promoting human health) and how such information can be utilized in order to synthesize better chemical derivatives. In this review article, weaimed to provide updated information on synthetic and biological (biosurfactants) SAAs and their health-promoting properties (e.g., anti-microbial, anti-oxidant, anti-viral, anti-inflammatory, anti-cancer and anti-aging) in an attempt to better define some of the underlying mechanism(s) by which they exert such properties.

The Retrieval and Use of Components from AMPS Production Residue

2011 ◽  
Vol 356-360 ◽  
pp. 2060-2064
Author(s):  
Hai Jing Wang ◽  
Jin Sheng Feng
Keyword(s):  
Molecular Weight ◽  
Sulfonic Acid ◽  
Raw Materials ◽  
Low Molecular Weight ◽  
Surface Active Agents ◽  
External Standard Method ◽  
Reinforcing Agent ◽  
External Standard ◽  
Surface Active ◽  
Flocculating Agent

2-acrylamido-2-methylpropane sulfonic acid (AMPS) is commonly used in the synthesis of polyacrylamide which is widely used as surface-active agents, water treatment chemicals and oil-displacing agents. In the production process of AMPS, there are some byproducts. In this paper, the residue from AMPS production is analyzed. The main byproducts in the residue are ascertained by means of HPLC and ESI-MS, which are butylacrylamide (TBAA) and acrylamide. By external standard method, the residue is analyzed quantitatively. Using the residue as raw materials, a kind of polyacrylamide with low molecular weight is synthesized, which can be used as paper reinforcing agent or emulsifier. After the residue is purified, the high molecular weight polyacrylamide is synthesized, which can be used as flocculating agent or oil-displacing agent.

Effect of ZrO2 on Mechanical and Biological Properties of Calcium Phosphate-Based Glass-Ceramics for Biomedical Applications

2008 ◽  
Vol 368-372 ◽  
pp. 1429-1432 ◽  
Author(s):  
Cai Yun Zheng ◽  
Shu Jun Li ◽  
Yu Lin Hao ◽  
Rui Yang
Keyword(s):  
Adverse Effect ◽  
Calcium Phosphate ◽  
Body Fluid ◽  
Biomedical Applications ◽  
Bending Strength ◽  
Glass Ceramics ◽  
Biological Properties ◽  
Chemical Compositions ◽  
Micro Hardness ◽  
Three Point Bending

The effect of ZrO2 addition on mechanical and biological properties of bioactive glass-ceramics with chemical compositions of 60CaO-30P2O5-3TiO2-xZrO2-(7-x)Na2O (x=0,1,3) was investigated. It was found that ZrO2 addition up to 3 mol% contributes to monotonical increase of the glass transition temperature. The micro-hardness increases slightly by 1 mol% ZrO2 addition and keeps constant with further addition whereas 1 mol% ZrO2 addition results in ~20% increase of three-point bending strength. When the specimens were soaked in simulated body fluid, complete apatite layers were formed on the specimens regardless of the ZrO2 addition. It is therefore concluded that the toughening contribution of 1 mol% ZrO2 addition has no adverse effect on the bioactivity of calcium phosphate glass-ceramics.

THE NUMBER-AVERAGE AND WEIGHT-AVERAGE MOLECULAR WEIGHT OF SOME NONIONIC SURFACE-ACTIVE AGENTS

1962 ◽  
Vol 40 (5) ◽  
pp. 957-962 ◽  
Author(s):  
A. F. Sirianni ◽  
J. M. G. Cowie ◽  
I. E. Puddington
Keyword(s):  
Molecular Weight ◽  
Vapor Pressure ◽  
Benzene Solution ◽  
Average Molecular Weight ◽  
Number Average Molecular Weight ◽  
Weight Average Molecular Weight ◽  
Surface Active Agents ◽  
Pressure Lowering ◽  
Surface Active ◽  
Active Substances

Further evidence for the existence of large differences between the weight- and number-average molecular weight for nonionic surface-active substances in nonaqueous solvents has been found when the property is assessed by light-scattering and vapor-pressure-lowering measurements. Equilibrium ultracentrifuge measurements support the results obtained by vapor-pressure-lowering determinations. Sorbitan and glycerol monostearates have been examined in benzene solution.

scholarly journals Morphology, Crystallinity, and Molecular Weight of Poly(ε-caprolactone)/Graphene Oxide Hybrids

Polymers ◽  
2019 ◽  
Vol 11 (7) ◽  
pp. 1099 ◽  
Author(s):  
Castilla-Cortázar ◽  
Vidaurre ◽  
Marí ◽  
Campillo-Fernández
Keyword(s):  
Molecular Weight ◽  
Graphene Oxide ◽  
Biomedical Applications ◽  
Morphological Changes ◽  
Gel Permeation Chromatography ◽  
Biological Properties ◽  
Intermolecular Hydrogen Bonds ◽  
Depth Study ◽  
Apparent Reduction ◽  
Mixing Method

A study was carried out to determine the effects of graphene oxide (GO) filler on the properties of poly(ε-caprolactone) (PCL) films. A series of nanocomposites were prepared, incorporating different graphene oxide filler contents (0.1, 0.2, and 0.5 wt%) by the solution mixing method, and an in-depth study was made of the morphological changes, crystallization, infrared absorbance, molecular weight, thermal properties, and biocompatibility as a function of GO content to determine their suitability for use in biomedical applications. The infrared absorbance showed the existence of intermolecular hydrogen bonds between the PCL’s carbonyl groups and the GO’s hydrogen-donating groups, which is in line with the apparent reduction in molecular weight at higher GO contents, indicated by the results of the gel permeation chromatography (GPC), and the thermal property analysis. Polarized optical microscopy (POM) showed that GO acts as a nucleating point for PCL crystals, increasing crystallinity and crystallization temperature. The biological properties of the composites studied indicate that adding only 0.1 wt% of GO can improve cellular viability and that the composite shows promise for use in biomedical applications.

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