Glycerol polymerization degree effect on the emulsifying properties of polyglycerol esters

2021 ◽  
Vol 138 (24) ◽  
pp. 50566
Author(s):  
Ana M. Díaz‐Lasprilla ◽  
Ronald A. Mercado ◽  
Gustavo E. Ramírez‐Caballero
Keyword(s):  
Emulsifying Properties ◽  
Polymerization Degree ◽  
Polyglycerol Esters

Functional and Antioxidant Properties of Angelwing Clam (Phplas orientalis) Hydrolysate Produced using Alcalase

2014 ◽  
Vol 11 (1) ◽  
pp. 29
Author(s):  
Nonnah Ismail ◽  
Juliana Mahmod ◽  
Awatif Khairul Fatihin Mustafa Kamal
Keyword(s):  
Antioxidant Properties ◽  
Enzyme Concentration ◽  
Degree Of Hydrolysis ◽  
Emulsifying Properties ◽  
Hydrolysis Time ◽  
Chelating Activity ◽  
Metal Chelating ◽  
Metal Chelating Activity ◽  
Intermediate Concentration ◽  
As Solubility

In this study, Hydrolysate from angelwing clam (Pholas orientalis) was produced at 0, 1, 2 and 3 hrs and E/S ratio of0.5 and 3%using alcalase where the pH and temperature were kept constant at pH 8.5 and 60°C, respectively. The hydrolysates were analysed for antioxidant and functional properties such as solubility, emulsifying properties and water and oil holding capacity. Degree of hydrolysis (DH), yield, functional and antioxidant properties were influenced by the hydrolysis time and E/S ratio. Higher enzyme concentration (E/S 3%) and longer hydrolysis time increased the DH. Yield was higher at E/S 3% but reduced with hydrolysis time. Longer hydrolysis time produced more soluble hydrolysate and higher metal chelating activity but lower in emulsifying properties and DPPH activity. Higher enzyme concentration resulted in increase only in solubility and metal chelating activity. This study revealed that enzymatic hydrolysis using alcalase should be performed at shorter hydrolysis time using intermediate concentration of enzyme (E/S between 0.5 to 3%) in order to produce angelwing clam hydrolysate with collectively good functional and antioxidant properties. 

Effect of Polymerization Temperature on Polymerization Degree and Structure of Calcium Polyphosphate

2012 ◽  
Vol 27 (2) ◽  
pp. 174-178
Author(s):  
Hang WU ◽  
Li-Fang ZHANG ◽  
Wei BAI ◽  
Chi MA ◽  
Cheng-Dong XIONG
Keyword(s):  
Polymerization Temperature ◽  
Polymerization Degree ◽  
Calcium Polyphosphate

Optimization Preparation and Emulsifying Properties of Carboxymethyl Silk Fibroin

2013 ◽  
Vol 30 (1) ◽  
pp. 73
Author(s):  
Wei JING ◽  
Jun-sheng LI ◽  
Guo-xia HUANG ◽  
Liu-juan YAN ◽  
Chun-hua LAI
Keyword(s):  
Silk Fibroin ◽  
Emulsifying Properties

The Thermooxidation and Resistance to Moulds Action of Some Polyethylene Sorts Used at Anticorrosive Insulation of the Underground Pipelines

2017 ◽  
Vol 54 (3) ◽  
pp. 447-452 ◽  
Author(s):  
Adriana Mariana Bors ◽  
Nicoleta Butoi ◽  
Alina Ruxandra Caramitu ◽  
Virgil Marinescu ◽  
Iosif Lingvay
Keyword(s):  
Heat Treatment ◽  
Thermal Analysis ◽  
Culture Media ◽  
Power Cables ◽  
Polymerization Degree ◽  
Crosslinking Degree ◽  
Underground Pipelines ◽  
Predominant Process ◽  
Underground Power Cables ◽  
Coupled Techniques

Polyethylene (PE) insulations have a wide applicability in the insulation of both underground pipelines and underground power cables. In this context, by coupled techniques of thermal analysis (TG/DTG+DTA) and microbiological determinations, have been studied thermooxidability and resistance to moulds action of some polyethylene sorts. Following the processing of the experimental data obtained by thermal analysis it was found that during the applied heat treatment (100 grd C), in the first approx. 380 h, there is a growth of LDPE (low density polyethylene) polymerization degree by elongation of the aliphatic chains, after which the predominant process consists in the structure crosslinking. For MDPE (mean density polyethylene) samples, during the thermal treatment applied, it was found that the crosslinking degree of polyethylene (PE) increased without significant molecular weight change (with all the related consequences of increasing the weight of the tertiary and quaternary carbon atoms in the molecule). Microbiological determinations have highlighted that the resistance to filamentous fungal action of LPDE is higher than that of the investigated MDPE. It was found that after heat treatment applied (1000 h and 100 oC), both at LDPE and at MDPE, decreases the resistance to moulds action is decreased. It has also been found that moulds action resistance is substantially decreased when inoculated culture media and PE samples are exposed to an alternative electric field of 50 Hz - 6 Vrms/cm.

Effect of polymerization degree of oligogalacturonates and D-galacturonans on their circular dichroic spectra

1979 ◽  
Vol 44 (1) ◽  
pp. 167-173 ◽  
Author(s):  
Slavomír Bystrický ◽  
Rudolf Kohn ◽  
Tibor Sticzay
Keyword(s):  
Physicochemical Properties ◽  
Aqueous Solutions ◽  
Helical Structure ◽  
Monomeric Unit ◽  
Polymerization Degree ◽  
Cd Spectra ◽  
Circular Dichroic

The CD spectra of aqueous solutions of homopolymeric sodium oligogalacturonates and D-galacturonans of polymerization degree n = 1-64, as well as lower calcium oligogalacturonates (n = 1-5) were measured. Chiroptic properties were correlated with the polymerization degree in terms of optical superposition of monomeric unit increments. Interpretation of obtained data, respecting further physicochemical properties entitles to conclude that the conformation of macromolecules of D-galacturonan in solution is close to helical structure.

Effect of homogenization associated with alkaline treatment on the structural, physicochemical, and emulsifying properties of insoluble soybean fiber (ISF)

2021 ◽  
Vol 113 ◽  
pp. 106516
Author(s):  
Yongjian Cai ◽  
Lihua Huang ◽  
Bifen Chen ◽  
Jiaqi Su ◽  
Xiujie Zhao ◽  
...  
Keyword(s):  
Alkaline Treatment ◽  
Emulsifying Properties
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