جستجوی مقالات مرتبط با کلیدواژه "چغندر" در نشریات گروه "پزشکی"

Pb, Cd and Ni are toxic metals can have dangerous and irreparable effects on humans. This study was conducted aim of investigation amount of bioaccumulation of Pb, Cd and Ni in the soil, Beta vulgaris and Daucus Carota of Shush city.

In this research of descriptive-sectional, 4 farms of Beta vulgaris and 4 farms of Daucus Carota were randomly selected in Shush city. 60 samples were prepared from each farms of Beta vulgaris and Daucus Carota, as well as 40 soil composite samples. Sampling was done in the winter of 2019 and spring of 2020. EPA 3050 method was used to digest soil samples and the amount of Pb, Cd and Ni in the samples measured by ICP Plasma.

Cncentration of Cd, Pb and Ni of Beta vulgaris was 2.06, 35.87 and 96.68 mg Kg-1and of the Daucus Carota was 1.72, 14.82 and 39.52 mg Kg-1, respectively. Cncentration of Cd, Pb and Ni in the soil of Beta vulgaris and Daucus Carota farms were 2.9, 63.62 and 3150.65 mg Kg-1 and 14.4, 225.27 and 3348.82 mg Kg-1, respectively. The mean of concentration of heavy metals in Beta vulgaris and Daucus Carota and soil of the two studied plants were significantly different (P<0.05). The highest bioaccumulation index in Beta vulgaris and Daucus Carota was related to Cd, 0.74 and 0.125 and the lowest was related to Ni, 0.30 and 0.012, respectively.

The bioaccumulation coefficient of Pb, Cd and Ni in Beta vulgaris and Daucus Carota was calculated to be lower than 1. The concentration of Pb, Cd and Ni in the soil and Beta vulgaris and Daucus Carota was higher than the standard limit of the WHO and FAO (Pb and Cd was 0.3 and 0.2 mg/kg, respectively). Considering the high consumption of vegetables and the potential risks of heavy metal accumulation, regular monitoring of the supplied products is recommended.

Beetroot is a rich source of antioxidants and rich in nitrates. The present study aimed to investigate the effects of beetroot consumption on blood pressure, heart rate, perceived Exertion, and the speed of running in young female athletes.

For this purpose, 10 young female athletes participated in this cross-over double blind study. Subjects were randomly placed into placebo (n=5) or beetroot (200 g containing 500 mg Nitrate; n=5) groups. They ran 5 Km on treadmill. The wash-out period for them was one week. Systolic and diastolic blood pressure were measured before and 3 hours after beetroot consumption and after the 5 Kilometer run. Heart rate, perceived exertion, and the speed of running at the distances of 1.6 and 3.2 kilometers were recorded. Two-way ANOVA with repeated measures and independent t-test were used for data analysis.

The results showed that beetroot consumption significantly reduced systolic blood pressure before and after the exercise, and reduced diastolic blood pressure before the exercise. Heart rate was significantly decreased in beetroot group after 1.6 and 3.2 kilometers run, but no significant difference was found between beetroot and placebo groups at the end of 5 kilometer run. Perceived exertion was significantly reduced at the end of 1.6 kilometer run but not after 3.2 and 5 kilometer run in the beetroot group. The alterations in the speed of running at 1.6, 3.2 and 5 kilometers were not significantly different between the groups.

According to the results of this study, in addition to the health benefits of vegetables, nitrate-rich vegetables can improve performance of training.