Effect of gamma radiation and storage on total antioxidant capacity and parameter responsible for generation of off-flavour in soybean seeds varying in seed coat colour

2014 ◽  
Vol 37 (5) ◽  
pp. 500 ◽  
Author(s):  
Gaurav Kumar ◽  
Anil Dahuja ◽  
I.M. Santha
Keyword(s):  
Gamma Radiation ◽  
Antioxidant Capacity ◽  
Seed Coat ◽  
Total Antioxidant Capacity ◽  
Coat Colour ◽  
Soybean Seeds ◽  
Seed Coat Colour ◽  
Total Antioxidant ◽  
And Storage

scholarly journals Radioprotective and anti-diabetic effects of Costus speciosus and carnosine

2020 ◽  
Vol 19 (1) ◽  
pp. 121-127
Author(s):  
Ebtisam A. Marzook ◽  
Fawzy A. Marzook ◽  
Ahmed E. Abd El Moneim
Keyword(s):  
Gamma Radiation ◽  
Antioxidant Capacity ◽  
Total Antioxidant Capacity ◽  
Natural Antioxidants ◽  
Serum Levels ◽  
Serum Glucose ◽  
Control Group ◽  
Albino Rats ◽  
Costus Speciosus ◽  
Total Antioxidant

Purpose: To evaluate the possible radioprotective effect of Costus speciosus and carnosine as natural antioxidants in order to control the  hyperglycemia developed in male albino rats exposed to acute oxidative stress induced by gamma radiation. Methods: Twenty-eight adult male albino rats were divided into four groups. The first group was taken as a control group, while the three other groups were exposed to Ɣ irradiation at a single 7.5 Gy dose. Furthermore, the rats in the second and third groups were i.p. injected with Costus speciosus root powder and carnosine, respectively. On the 3rd day, after irradiation, the serum levels of glucose, insulin, C peptide, copper, iron, calcium, total antioxidant capacity (TAC) and malondialdehyde (MDA) were measureded. Results: The results revealed that exposure to Ɣ irradiation induced significant increases in serum glucose, iron, and malondialdehyde. However, the levels of serum calcium, copper, total antioxidant capacity and insulin significantly decreased (p < 0.05). A significant decrease was observed in Cpeptide in the exposed group, compared to control group. All the test parameters indicate improvement after treatment with Costus speciosus and carnosine (p < 0.05). Conclusion: Costus speciosus and carnosine ameliorate the effect of gamma radiation, indicating their role as antidiabetic agents and  radioprotectors; however, Costus speciosus was critically more efficient than carnosine. Keywords: Costus speciosus, Carnosine, Diabetes, Insulin, Gamma radiation protection

Changes in Fruit Phenolic Composition and Antioxidant Capacity during Storage

HortScience ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 469b-469 ◽  
Author(s):  
W. Kalt ◽  
C.F. Forney ◽  
J. McDonald
Keyword(s):  
Antioxidant Capacity ◽  
Total Antioxidant Capacity ◽  
Storage Period ◽  
Total Phenolic ◽  
Anthocyanin Content ◽  
Positive Health ◽  
Total Antioxidant ◽  
Health Quality ◽  
And Storage

Ripe fruit of strawberry, raspberry, and highbush and lowbush blueberries were stored at 0, 10, 20, or 30 °C for up to 8 days. Total phenolic and anthocyanin content was measured at regular intervals during the storage period as well as the total antioxidant capacity, using the method of Cao et al. (Clin. Chem. 1995, 41/12 1739 1744). There were significant differences in all parameters among the species, and after storage. Across all species and storage treatments, the antioxidant capacity was correlated with the content of phenolics (R = 0.77) and anthocyanins (R = 0.85). Both species of blueberry had more than twice the antioxidant capacity of either raspberry or strawberry; antioxidant capacity of the highbush and low-bush blueberries did not change during storage. During storage at temperatures greater than 0 °C, anthocyanin content of raspberries and strawberries increased substantially, and this increase was accompanied by an increase in total antioxidant capacity. Since dietary antioxidants such as anthocyanin flavonoids have been suggested to have positive health benefits, postharvest anthocyanin formation may have a desirable effect on the health quality of certain fruit.

Flavonoid content in different legume germplasm seeds quantified by HPLC

2008 ◽  
Vol 6 (1) ◽  
pp. 62-69 ◽  
Author(s):  
M. L. Wang ◽  
A. G. Gillaspie ◽  
J. B. Morris ◽  
R. N. Pittman ◽  
J. Davis ◽  
...  
Keyword(s):  
Seed Coat ◽  
Significant Variation ◽  
High Performance ◽  
Coat Colour ◽  
Soybean Seeds ◽  
Flavonoid Content ◽  
Seed Coat Colour ◽  
Content Variation ◽  
Legume Seeds ◽  
Breeding Programmes

Flavonoid content was quantified by high performance liquid chromatography (HPLC) and seed-coat colour was recorded from different legume seeds. Soybean seeds generally contained significantly higher amounts of daidzein (315–354 μg/g), genistein (438–458 μg/g), kaempferol (38–68 μg/g) and total measured flavonoids (892–917 μg/g), while cowpea and peanut seeds contained a significantly higher amount of quercetin (214–280 μg/g and 133–289 μg/g, respectively) than the other legumes tested. Significant variation for flavonoid content existed among and within legume species. Daidzein was significantly correlated with genistein and kaempferol (r = 0.92, P < 0.0001; r = 0.68, P < 0.0001), respectively. Genistein was also significantly correlated with kaempferol (r = 0.84, P < 0.0001). Due to differences in genetic background, no consistent relationship was observed between seed-coat colour and flavonoid content. Variation observed in flavonoid content and seed-coat colour would be useful for legume breeding programmes and consumer use.

Trans-resveratrol supplement lowers lipid peroxidation responses of exercise in male Wistar rats

2020 ◽  
pp. 1-6 ◽  
Author(s):  
Masoud Nasiri ◽  
Saja Ahmadizad ◽  
Mehdi Hedayati ◽  
Tayebe Zarekar ◽  
Mehdi Seydyousefi ◽  
...  
Keyword(s):  
Lipid Peroxidation ◽  
Antioxidant Capacity ◽  
Total Antioxidant Capacity ◽  
Wistar Rats ◽  
Enzymatic Antioxidants ◽  
Acute Response ◽  
Total Antioxidant ◽  
Male Wistar Rats ◽  
Exercise Induced ◽  
And Control

Abstract. Physical exercise increases free radicals production; antioxidant supplementation may improve the muscle fiber’s ability to scavenge ROS and protect muscles against exercise-induced oxidative damage. This study was designed to examine the effects of all-trans resveratrol supplementation as an antioxidant to mediate anti-oxidation and lipid per-oxidation responses to exercise in male Wistar rats. Sixty-four male Wistar rats were randomly divided into four equal number (n = 16) including training + supplement (TS), training (T), supplement (S) and control (C) group. The rats in TS and S groups received a dose of 10 mg/kg resveratrol per day via gavage. The training groups ran on a rodent treadmill 5 times per week at the speed of 10 m/min for 10 min; the speed gradually increased to 30 m/min for 60 minutes at the end of 12th week. The acute phase of exercise protocol included a speed of 25 m/min set to an inclination of 10° to the exhaustion point. Superoxide dismutase (SOD), glutathione peroxidase (GPx), catalase (CAT) activity, non-enzymatic antioxidants bilirubin, uric acid, lipid peroxidation levels (MDA) and the total antioxidant capacity (TAC) were measured after the exercise termination. The data were analyzed by using one-way ANOVA. The result showed that endurance training caused a significant increase in MDA level [4.5 ± 0.75 (C group) vs. 5.9 ± 0.41 nmol/l (T group)] whereas it decreased the total antioxidant capacity [8.5 ± 1.35 (C group) vs. 7.1 ± 0.55 mmol/l (T group)] (p = 0.001). In addition, GPx and CAT decreased but not significantly (p > 0.05). The training and t-resveratrol supplementation had no significant effect on the acute response of all variables except MDA [4.3 ± 1.4 (C group) vs. 4.0 ± 0.90 nmol/l (TS group)] (p = 0.001) and TAC [8.5 ± 0.90 (C group) vs. 6.6 ± 0.80 mmol/l (TS group)] (p = 0.004). It was concluded that resveratrol supplementation may prevent exercise-induced oxidative stress by preventing lipid peroxidation.

Summer Day/Night Gender Differences in Serum Total Antioxidant Capacity as a Methodological Pitfall in Human Antioxidant Research

2016 ◽  
Vol 4 (2) ◽  
Author(s):  
Armando L. Morera-Fumero ◽  
Pedro Abreu-Gonzalez ◽  
Lourdes Fernandez- Lopez ◽  
Estefanía Díaz-Mesa ◽  
Maria del Rosario Cejas-Mendez
Keyword(s):  
Gender Differences ◽  
Antioxidant Capacity ◽  
Total Antioxidant Capacity ◽  
Total Antioxidant
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