Effects of phenolic compounds from blueberry leaves on the thermal decomposition of trimethylamine oxide in squid extract

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Yingchang Li ◽  
Fengxia Du ◽  
Suzhen Song ◽  
Shuangyan Li ◽  
Xianqing Yang ◽  
...  
Keyword(s):  
Thermal Decomposition ◽  
Free Radicals ◽  
Chlorogenic Acid ◽  
Theoretical Basis ◽  
Leaf Extract ◽  
Aquatic Products ◽  
Trimethylamine Oxide ◽  
Mechanism Of Inhibition ◽  
Development And Utilization ◽  
Blueberry Leaves

AbstractThe effects of chlorogenic acid and quercetin-3-D-galactoside on the decomposition of trimethylamine oxide (TMAO) in squid extract and the main mechanism of inhibition of thermal decomposition were studied. The results indicated that chlorogenic acid and quercetin-3-D-galactoside could inhibit decomposition of TMAO in squid extract. The amount of TMAO was increased by 11.79 and 15.76% in squid extract treated with chlorogenic acid and quercetin-3-D-galactoside from 0 and 2.5 g/L, respectively. The contents of trimethylamine (TMA), dimethylamine (DMA), and formaldehyde (FA) were significantly decreased with increasing contents of chlorogenic acid and quercetin-3-D-galactoside. There were many free radicals in squid extract at high temperatures; however, the free radical signals were weakened after the addition of chlorogenic acid and quercetin-3-D-galactoside therein. This implied that chlorogenic acid and quercetin-3-D-galactoside could inhibit the thermal decomposition of TMAO in squid extract, which was associated with the scavenging of their free radicals. This result provides a theoretical basis for the development and utilization of blueberry leaf extract as an efficient FA inhibitor for aquatic products.

Reactions of Free Radicals Formed from Thermal Decomposition of Acetyl Peroxide

1950 ◽  
Vol 72 (3) ◽  
pp. 1265-1269 ◽  
Author(s):  
F. G. Edwards ◽  
F. R. Mayo
Keyword(s):  
Thermal Decomposition ◽  
Free Radicals

scholarly journals EFFECTIVENESS OF LEAF EXTRACT REDUCE INFLAMMATION REACTION IN HYPERCHOLESTEROLEMIA RATS

2017 ◽  
Vol 1 (1) ◽  
pp. 12
Author(s):  
Puguh Santoso ◽  
Ni Nyoman Wahyu Udayani ◽  
I Nyoman Gede Tri Sutrisna ◽  
Ketut Agus Adrianta
Keyword(s):  
Free Radicals ◽  
Leaf Extract ◽  
Oxidized Ldl ◽  
Oxidative Modification ◽  
Blood Cholesterol ◽  
Ldl Oxidation ◽  
Control Group ◽  
Control Group Design ◽  
White Rats ◽  
Group I

Abstract High blood cholesterol is often called hypercholesterolemia is a risk factor for the emergence of pathological conditions such as heart and blood vessel disease. Hypercholesterolemia has an important role in the occurrence of damage to the endothelial cells is mainly caused by oxidized LDL. Oxidation of LDL triggers the formation of TNF - ?. Leaves messengers that allegedly contains flavonoids can improve the situation of hypercholesterolemia through the barriers specifically the expression of TNF - ? increased due to hypercholesterolemia. Plants messengers known to contain alkaloids, flavonoids, tannins, saponins, polyphenols, calcium oxalate, fats, and essential oil. Flavonoids which has the ability to bind the atom to form free radicals not to excess free radicals, thereby inhibiting the oxidative modification of LDL become ox-LDL so it will not be formed atherosclerosis. This study uses the Randomize pattern Pre and Post Test Control Group Design, using white rats (Rattusnovergicus) with Wistar strain aged 3-4 months, weighing 175-200 grams. Divided into four groups: Group I as a control with placebo, Group II treatment using extracts of ethanol leaves a messenger at a concentration of 10%, Group III treatments using extracts of ethanol leaves a messenger at a concentration of 20%, Group IV is to use the extract ethanol leaves errand at a concentration of 30%. It can be concluded at 4 dose group 30% messengers leaf extract significantly different, p <0.05, so it can be said that the provision of effective messengers extract at a dose of 30%.

FREE RADICALS BY MASS SPECTROMETRY: VII. THE IONIZATION POTENTIALS OF ETHYL, ISOPROPYL, AND PROPARGYL RADICALS AND THE APPEARANCE POTENTIALS OF THE RADICAL IONS IN SOME DERIVATIVES

1955 ◽  
Vol 33 (5) ◽  
pp. 861-869 ◽  
Author(s):  
J. B. Farmer ◽  
F. P. Lossing
Keyword(s):  
Mass Spectrometry ◽  
Thermal Decomposition ◽  
Free Radicals ◽  
Kinetic Energy ◽  
Electron Impact ◽  
Ionization Potentials ◽  
Bond Dissociation Energies ◽  
Radical Ions ◽  
Dissociation Energies ◽  
Propargyl Radicals

The ionization potentials of ethyl, isopropyl, and propargyl radicals have been measured by electron impact on radicals produced by thermal decomposition of appropriate compounds. The values are:ethyl 8.78±0.05 ev., isopropyl 7.90±0.05 ev., and propargyl 8.25±0.08 ev. From the appearance potentials of these ions in various compounds, the following values of bond dissociation energies were obtained:[Formula: see text][Formula: see text] assuming no kinetic energy of the products.

Upregulation of caveolin-1 by mulberry leaf extract and its major components, chlorogenic acid derivatives, attenuates alcoholic steatohepatitis via inhibition of oxidative stress

2017 ◽  
Vol 8 (1) ◽  
pp. 397-405 ◽  
Author(s):  
Yi-Ju Lee ◽  
Jeng-Dong Hsu ◽  
Wea-Lung Lin ◽  
Shao-Hsuan Kao ◽  
Chau-Jong Wang
Keyword(s):  
Oxidative Stress ◽  
Liver Cirrhosis ◽  
Chlorogenic Acid ◽  
Liver Diseases ◽  
Leaf Extract ◽  
Caveolin 1 ◽  
Alcoholic Steatohepatitis ◽  
Mulberry Leaf ◽  
Mulberry Leaf Extract ◽  
Excessive Alcohol

Excessive alcohol uptake exerts hepatocellular toxicity, ultimately leading to multiple liver diseases such as steatohepatitis and liver cirrhosis.

FREE RADICALS BY MASS SPECTROMETRY: XXXII. THERMAL DECOMPOSITION OF CYCLOPENTYL RADICALS

1965 ◽  
Vol 43 (3) ◽  
pp. 565-569 ◽  
Author(s):  
T. F. Palmer ◽  
F. P. Lossing
Keyword(s):  
Mass Spectrometry ◽  
Thermal Decomposition ◽  
Free Radicals ◽  
Elevated Temperatures ◽  
Bond Rupture ◽  
Low Pressures

At low pressures and elevated temperatures cyclopentyl radicals are found to dissociate mainly by two modes of reaction: about 34% by loss of H atom to form cyclopentene, and about 66% by a C—C bond rupture to form ethylene and allyl radicals. Under the conditions employed no evidence for a third possible mode, the loss of H2 to form cyclopentenyl radical, could be found. It is estimated that an incidence of 2% of the latter could have been detected.

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