2.2.3.2. In Vivo
2.2.3.2.1. Animal Experiment
This research was conducted under the supervision of the committee on animal experimentation at Mahasarakham University, Mahasarakham, Thailand, according to Description No. 0001/2556 by using forty male Wistar rats aged six weeks (ten rats/group) weighing 200±50 g from the National Animal Laboratory Centre, Mahidol University, Salaya, Nakhon Pathom. Before the experiment, the rats were allowed to become accustomed to the environment for seven days with one rat living in one cage. The experimentation method was modified from [29] controlled environments as follows: Temperature of 23±2°C, relative humidity of 60% and ratio of time living in darkness:light (12:12 hr).
2.2.3.2.2. Preparation of Animal
The rats were randomly assigned to the four following groups: 1) The control group was given processed experimental rat food and water; 2) The first group was given processed experimental rat food, water and increased polyphenol from extracts of rice formulas accepted by consumers at 500 mg/kg; 3) The second group was given processed experimental rat food, water and were stimulated with stress by raising the temperature to 38±2°C for 4 hr/day and 4) The third group was given processed experimental rat food, water and were stimulated with stress by raising the temperature to 38±2°C for 4 hr/day with polyphenol from extracts of rice formulas accepted by consumers at 500 mg/kg. Blood samples were then collected at five intervals (Day 0, Day 1, Day 3, Day 7 and Day 14) to prepare red blood cells and measure GPx levels by using the CGP1-1KT Glutathione Peroxidase Cellular analysis set.
2.3. Statistical Analysis
Statistical data were analyzed by Analysis of Variance (ANOVA) with a completely randomized design. Selection of rice formulas accepted by consumers, all levels of γ-oryzanol, α-tocopherol and phenolic substances and antioxidant activities of rice formulas accepted by consumers In Vitro were analyzed by one-way ANOVA. The GPx levels in rats were analyzed by two-way ANOVA and were measured by comparing mean value differences in pairs with Scheffe’s Test with statistical significance set at p
2.2.3.2. In Vivo2.2.3.2.1. Animal ExperimentThis research was conducted under the supervision of the committee on animal experimentation at Mahasarakham University, Mahasarakham, Thailand, according to Description No. 0001/2556 by using forty male Wistar rats aged six weeks (ten rats/group) weighing 200±50 g from the National Animal Laboratory Centre, Mahidol University, Salaya, Nakhon Pathom. Before the experiment, the rats were allowed to become accustomed to the environment for seven days with one rat living in one cage. The experimentation method was modified from [29] controlled environments as follows: Temperature of 23±2°C, relative humidity of 60% and ratio of time living in darkness:light (12:12 hr).2.2.3.2.2. Preparation of AnimalThe rats were randomly assigned to the four following groups: 1) The control group was given processed experimental rat food and water; 2) The first group was given processed experimental rat food, water and increased polyphenol from extracts of rice formulas accepted by consumers at 500 mg/kg; 3) The second group was given processed experimental rat food, water and were stimulated with stress by raising the temperature to 38±2°C for 4 hr/day and 4) The third group was given processed experimental rat food, water and were stimulated with stress by raising the temperature to 38±2°C for 4 hr/day with polyphenol from extracts of rice formulas accepted by consumers at 500 mg/kg. Blood samples were then collected at five intervals (Day 0, Day 1, Day 3, Day 7 and Day 14) to prepare red blood cells and measure GPx levels by using the CGP1-1KT Glutathione Peroxidase Cellular analysis set.2.3. Statistical AnalysisStatistical data were analyzed by Analysis of Variance (ANOVA) with a completely randomized design. Selection of rice formulas accepted by consumers, all levels of γ-oryzanol, α-tocopherol and phenolic substances and antioxidant activities of rice formulas accepted by consumers In Vitro were analyzed by one-way ANOVA. The GPx levels in rats were analyzed by two-way ANOVA and were measured by comparing mean value differences in pairs with Scheffe’s Test with statistical significance set at p<0.05.
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