نتایج جستجو برای: thiobarbituric acid tba reactivity

تعداد نتایج: 797426  

A. A. Motallebi B. Karami E. Hosseini M. Soltani Y. Moradi

The aim of the investigation was to determine the changes in fatty acids profile and chemical quality indexes of Red Tilapia fillets during frozen storage at -18°C. The fish were filleted by hand. The prepared fillets were then placed to the polyamide pouches and stored at -18°C for 150 days. Fatty acid profile, sensory properties and chemical quality indices were determined for a five month pe...

A. A. Motallebi, B. Karami, E. Hosseini, M. Soltani , Y. Moradi,

The aim of the investigation was to determine the changes in fatty acids profile and chemical quality indexes of Red Tilapia fillets during frozen storage at -18°C. The fish were filleted by hand. The prepared fillets were then placed to the polyamide pouches and stored at -18°C for 150 days. Fatty acid profile, sensory properties and chemical quality indices were determined for a five month pe...

BACKGROUND: Freezing is a common way and one of the best methods of seafood preservation for long periods of time; however, the freeze thawing process may influence the quality of food. OBJECTIVES: Oxidation and denaturation of proteins, sublimation and recrystallization of ice crystals can cause changes in the quality of the frozen products. This study was aimed to evaluate the effect of three...

ژورنال: شیلات 2011

امروزه اهمیت نگهداری و عرضه ماهی تازه با توجه به علاقه مصرف کنندگان به ماهی تازه نسبت به منجمد روز به روز بیشتر می‌شود. در این میان تعیین مدت زمان ماندگاری ماهی، جهت تعیین زمان مصرف آن، به دلیل فساد پذیری بالای ماهی اهمیت می‌یابد. این پژوهش به منظور بررسی روند تغییرات فسادی و تعیین زمان ماندگاری ماهی قزل‌آلای رنگین‌کمان (Oncorhynchus mykiss) طی نگهداری در دمای یخچال (°C4) صورت پذیرفت. بدین منظو...

Journal: :journal of basic and clinical pathophysiology 0
mehrdad roghani shahed univ. zahra kiasalari shahed mohsen khalili shahed rana heydarifard shahed

background and objective: alzheimer’s disease (ad) is a multifactorial disease with debilitating consequences and few therapeutic strategies exist for it. with regard to antioxidant capacity and anti-β-amyloid polymerization potential of ellagic acid, this study was conducted to evaluate the effect of this substance on enhanced acetylcholinesterase reactivity in an experimental model of alzheim...

Ş. Çaklı, T. Baygar, Y. Alparslan,

The freezing-thawing effect on the meat quality of whole, gutted and fillets of sea bass (Dicentrarchus labrax) were investigated. It was aimed to investigate the changes in the meat quality of whole, gutted and fillets of sea bass in multiple frozen (-18±2ºC) and thawed cycles in refrigerated conditions (4±2°C). The meat quality assessment of the sea bass groups (whole, gutted and fillets) sub...

Journal: :Anesthesiology 2002
Max T Baker Deborah J Dehring Marc S Gregerson

BACKGROUND Sodium metabisulfite is added to a commercial propofol emulsion as an antimicrobial agent. The sulfite ion (SO3(-2)) is capable of undergoing a number of reactions, including autooxidation and the promotion of lipid peroxidation. This study evaluated sulfite reactivity in propofol emulsions by determining thiobarbituric acid reacting substances (TBARS), sulfite depletion, and emulsio...

Journal: :Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy 2013
Mamdouh S Masoud Adel El-Marghany Adel Orabi Alaa E Ali Reham Sayed

Synthesis of 5-arylidine thiobarbituric acids containing different functional groups with variable electronic characters were described and their Co(2+), Ni(2+) and Cu(2+) complexes. The stereochemistry and mode of bonding of 5-(substituted benzylidine)-2-TBA complexes were achieved based on elemental analysis, spectral (UV-VIS, IR, (1)H NMR, MS), magnetic susceptibility and conductivity measur...

Journal: :The Biochemical journal 1989
O I Aruoma M J Laughton B Halliwell

Carnosine, homocarnosine and anserine have been proposed to act as antioxidants in vivo. Our studies show that all three compounds are good scavengers of the hydroxyl radical (.OH) but that none of them can react with superoxide radical, hydrogen peroxide or hypochlorous acid at biologically significant rates. None of them can bind iron ions in ways that interfere with 'site-specific' iron-depe...

Journal: :Analytical biochemistry 1984
M Shlafer B M Shepard

A thiobarbituric acid (TBA) reaction for measuring lipid peroxidation products was evaluated for interference by several ingredients commonly used in solutions to prepare or analyze tissue homogenates or subcellular organelles. These included sucrose (up to 100 mM final concentration in the assay medium), Tris-maleate (up to 40 mM), imidazole (up to 20 mM), inorganic phosphate (up to 10 mM), an...

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