Mazaher Hosseinzadeh Rostam Kalaei; Vahid Abdossi; Elham Danaee
Volume 4, Issue 2 , April 2021, , Pages 1-7
Abstract
The aim of this research was to determine the effect of selenium forms (sodium selenate and sodium selenite) at (2, 4, 8, and 16 mg/l) levels on the phytochemical attributes of Echium amoenum (Vipers bugloss) as factorial randomized complete block design. Selenium sources were added in four steps: 2 ...
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The aim of this research was to determine the effect of selenium forms (sodium selenate and sodium selenite) at (2, 4, 8, and 16 mg/l) levels on the phytochemical attributes of Echium amoenum (Vipers bugloss) as factorial randomized complete block design. Selenium sources were added in four steps: 2 true leaves stage, 10 leaves, 2 weeks, and 1 week before flowering. The traits were evaluated in different stages of flowering (beginning, full flowering, and end of flowering). Results showed that selenium sources significantly affected the qualitative characteristics of the E. amoenum. The highest photosynthetic pigments were obtained by 4 mg/l sodium selenite at beginning of flowering. When the plants were sprayed with 4 mg/l sodium selenate and harvested at beginning of flowering, higher total alkaloid contents in leaves and petals were observed compared to the other treatments. When the plants were sprayed with 8 mg/l sodium selenate and harvested at end of flowering, higher total phenols and flavonoids contents, soluble sugars content were observed compared to the other treatments. Moreover, foliar application of selenium sources significantly increased the content of this element in the petals. Sodium selenate was more effective than sodium selenite in increasing the content of this element. Generally, the results showed selenium sources significantly improved phytochemical properties of E. amoenum.
Parviz Samavatipour; Vahid Abdossi; Reza Salehi; Saeed Samavat; Alireza Ladan Moghadam
Volume 3, Issue 4 , December 2020, , Pages 1-6
Abstract
Recently, the role of selenium (Se) as an antioxidant has generated wide interest in humans and animal-based on its presence in antioxidant defense systems. Unfortunately, people in many countries fail to get enough selenium. Dill (Anethum graveolens L.) is one of the medicinal plants belonging to the ...
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Recently, the role of selenium (Se) as an antioxidant has generated wide interest in humans and animal-based on its presence in antioxidant defense systems. Unfortunately, people in many countries fail to get enough selenium. Dill (Anethum graveolens L.) is one of the medicinal plants belonging to the family Apiaceae. Any kind of herbal drug is influenced by many factors. Genetic, pre-harvest (season of harvest, soil, type of water), and post-harvest factors (storage, temperature, moisture) can affect total phenolic, flavonoid, and antioxidant capacity as well as other elements and compounds. The aim of this study was to investigate the effect of selenium trace in combination with and acids on the enrichment of dill. The experiment was conducted in a completely randomized design with three levels of acid (0, 50, and 150 mmol /l) and selenium application at 5 levels (0, 6, 8, 12 and 16 mg/l). The results of this experiment showed that the effect of selenium at different level of acids was significant. So that shoot fresh and dry weight, chlorophyll, essential oils, selenium content, and antioxidant enzymes were affected by increasing treatment level. The results indicated that (50 mg/l acid+12 mg/l sodium selenate) increased and improved some morphophysiological traits and essential oils including ɑ-Pinene, β-Myrecene, ɑ-Phellandene, and Carvone.
Raheleh Kamalzadeh Yazdi; Ghazaleh Shakeri; Motahareh Hatami Marbini; Behnood Abbasi
Volume 1, Issue 2 , June 2018, , Pages 29-34
Abstract
Diabetes is a progressive chronic disease and is considered as an important health problem, which has increased in recent years. The prevalence of diabetes in the Middle East in 2015 was 35.4 million, which more than 4.6 million people were in Iran. In this review, we specifically tried to summarize ...
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Diabetes is a progressive chronic disease and is considered as an important health problem, which has increased in recent years. The prevalence of diabetes in the Middle East in 2015 was 35.4 million, which more than 4.6 million people were in Iran. In this review, we specifically tried to summarize the results of clinical trials on the effects of selenium supplementation on glycemic control and lipid profile and inflammatory factors in type 2 diabetic patients. In this review, three interventional studies were included to evaluate the effect of Selenium supplementation on metabolic parameters. Serum insulin concentration and insulin resistance index were significantly reduced in two of the studies. Fasting plasma glucose and HDL cholesterol concentrations significantly increased in one study while in other studies no significant changes were observed. One of the studies showed a significant reduction in inflammatory Indicators and antioxidant capacity, one study also showed a significant decrease in lipid profiles. Selenium supplementation in patients with type 2 diabetes may have adverse effects on blood glucose homeostasis. However, it may improve lipid profile and antioxidant capacity and reduces inflammatory mediators in these patients. Therefore, in spite of the negative effects of glucose homeostasis with regard to the positive effects seen, further investigations are needed to evaluate the final effect of selenium supplementation in patients with type 2 diabetes.
