New Investigation of the Isothermal Oxidation of Extra Virgin Olive Oil: Determination of Free Radicals, Total Polyphenols, Total Antioxidant Capacity, and Kinetic Data

2008 ◽  
Vol 56 (18) ◽  
pp. 8287-8295 ◽  
Author(s):  
Lucia Amati ◽  
Luigi Campanella ◽  
Roberto Dragone ◽  
Adriano Nuccilli ◽  
Mauro Tomassetti ◽  
...  
Keyword(s):  
Free Radicals ◽  
Antioxidant Capacity ◽  
Total Antioxidant Capacity ◽  
Kinetic Data ◽  
Virgin Olive Oil ◽  
Extra Virgin Olive Oil ◽  
Isothermal Oxidation ◽  
Total Polyphenols ◽  
Total Antioxidant

Evaluation of Salivary Antioxidants and Oxidative Stress Markers in Male Smokers

2019 ◽  
Vol 22 (7) ◽  
pp. 496-501
Author(s):  
Fatemeh Ahmadi-Motamayel ◽  
Parisa Falsafi ◽  
Hamidreza Abolsamadi ◽  
Mohammad T. Goodarzi ◽  
Jalal Poorolajal
Keyword(s):  
Oxidative Stress ◽  
Uric Acid ◽  
Free Radicals ◽  
Antioxidant Capacity ◽  
Cigarette Smoke ◽  
Total Antioxidant Capacity ◽  
The Body ◽  
Total Antioxidant ◽  
The Mean ◽  
And Oxidative Stress

Background: Cigarette smoke free radicals can cause cellular damage and different diseases. All the body fluids have antioxidants which protect against free radicals. Objective: The aim of this study was to evaluate salivary total antioxidant capacity and peroxidase, uric acid and malondialdehyde levels in smokers and a nonsmoking control group. Methods: Unstimulated saliva was collected from 510 males. A total of 259 subjects were current smokers and 251 were non-smokers. The levels of salivary total antioxidant capacity, uric acid, peroxidase and malondialdehyde were measured using standard procedures. Data were analyzed with t test and ANOVA. Results: The smokers were younger and dental hygiene index was higher than healthy nonsmoking controls. The mean total antioxidant capacity in smokers and nonsmokers was 0.13±0.07 and 0.21±011, respectively (P=0.001). Smokers had significantly lower peroxidase and uric acid levels than healthy controls. In addition, the mean malondialdehyde levels in the smokers and nonsmokers were 4.55 ±2.61 and 2.79 ±2.21, respectively (P=0.001). Conclusion: Cigarette smoke produces free radical and oxidative stress, causing many side effects. Salivary antioxidant levels decreased and malondialdehyde levels increased in smokers, indicating the high oxidative stress among smokers compared to nonsmokers. Cigarette smoke had deleterious effects on main salivary antioxidants levels.

scholarly journals Protective Effect of Matricaria chamomilla Ethanolic Extract on Hippocampal Neuron Damage in Rats Exposed to Formaldehyde

2018 ◽  
Vol 2018 ◽  
pp. 1-10 ◽  
Author(s):  
Zahra Sayyar ◽  
Alireza Yazdinezhad ◽  
Maryam Hassan ◽  
Iraj Jafari Anarkooli
Keyword(s):  
Cell Death ◽  
Free Radicals ◽  
Antioxidant Capacity ◽  
Passive Avoidance ◽  
Avoidance Learning ◽  
Total Antioxidant Capacity ◽  
Ethanolic Extract ◽  
Passive Avoidance Learning ◽  
Matricaria Chamomilla ◽  
Total Antioxidant

Formaldehyde, as a frequently used compound in many applications, crosses the blood-brain barrier and leads to hippocampal cell death and memory impairment. This study investigates the effects of ethanolic extract of Matricaria chamomilla (MC) on passive avoidance learning induced by damaged hippocampal cells and evaluates the antioxidant traits of MC. The male Wistar rats were divided into six (6 in each) groups: control (10 mg/kg normal saline), 200 (200 mg/kg MC extract), 500 (500 mg/kg MC extract), F (10 mg/kg formaldehyde), F200 (10 mg/kg formaldehyde and 200 mg/kg MC extract), and F500 (10 mg/kg formaldehyde and 500 mg/kg MC extract). Shuttle box assay was used for evaluation of passive avoidance learning. The apoptosis rate of hippocampal tissue, malondialdehyde (MDA) free radicals, and total antioxidant capacity was evaluated to determine the positive effect of the ethanolic extract of MC. We found that the ethanolic extract of MC reduced the cell death, time spent in a dark room, and MDA free radicals in the hippocampus, leading to increased total antioxidant capacity in this region. In conclusion, the ethanolic extract of MC could ameliorate formaldehyde-induced memory damage through decreasing cell death and MDA activity of the hippocampal region and increasing total antioxidant capacity.

Determination of Satiety, Glycaemic Profiles, Total Antioxidant Capacity and Postprandial Glycemic Responses of Minimally Refined Sugar and Others in Malaysian Healthy Adults

Nutrition ◽  
2021 ◽  
pp. 111551
Author(s):  
Azrina Azlan ◽  
Samarghand Ebadi ◽  
Barakatun Nisak Mohd Yusof ◽  
Nur Maziah Hanum Othman ◽  
David Kannar ◽  
...  
Keyword(s):  
Antioxidant Capacity ◽  
Total Antioxidant Capacity ◽  
Healthy Adults ◽  
Total Antioxidant
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