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کاربرد نوع شرط:
- جایگاه : پژوهشی
- مجله: Journal of Plant Physiology and Breeding
- نوع مقاله: Journal Article
- کلمات کلیدی: silver nanoparticles,Magnetic field,Calendula officinalis,Phytochemical compounds
- چکیده: تاثیر میدانهای مغناطیسی و کاربرد نانوذرات نقره بر یک ارگانیسم زیستی، بسته به نوع مواد و سیستم و برنامهی بکار رفته و زمان و شدت کاربرد آن متفاوت است. در سالهای اخیر تحقیقات زیادی در زمینه حساسیت موجودات زنده نسبت به میدانهای مغناطیسی و نانوذرات انجام شده است. به همین منظور، برای ارزیابی تأثیر میدان مغناطیسی و نانوذرات نقره روی فعالیتهای پاداکسایشی گیاه همیشه بهار (Calendula officinalis L.) آزمایشی درسال 1396 در گروه زیست شناسی دانشگاه ارومیه با استفاده از طرح بلوکهای کامل تصادفی با چهار تیمار و سه تکرار انجام شد. تیمارها به این شرح بودند: شاهد، میدان مغناطیسی (با شدت 3mT ) به مدت یک ساعت در روز، نانو ذرات نقره (50 ppm) و ترکیب این دو تیمار. نتایج نشان داد که در گیاهان تحت تیمار با میدان مغناطیسی، نانوذره نقره و میدان مغناطیسی + نانوذره نقره، محتوای فنل کل، فلاونویید و ظرفیت جاروب کنندگی رادیکال آزاد DPPH، میزان فعالیت آنزیمهای فنیل آلانین آمونیالیاز، پلی فنل اکسیداز، کاتالاز، آسکوربات پراکسیداز، گایاکول پراکسیداز و گلوتاتیون ردوکتاز نسبت به گروه شاهد افزایش معنیدار در سطح احتمال 05/0 داشت. تیمار میدان مغناطیسی و نانوذرهی نقره واجد بهترین تأثیر روی وضعیت پاداکسایشی گیاه همیشه بهار بود و میتواند به عنوان جایگزینی مناسب برای ترکیبات شیمیایی مورد استفاده در کشاورزی قرار گیرد.
- چکیده انگلیسی: Effect of magnetic fields (MFs) and silver nanoparticles (SNPs) on a biological organism vary depending on their system and applied materials, time and intensity. In recent years, many studies have been conducted on the sensitivity of living organisms to MFs and NPs. For this purpose, an experiment was carried out in 2016 to study the effects of MF and SNPs on marigold (Calendula officinalis L.) using randomized complete block design with four treatments and three replications. The treatments were as follows: control, MF with B=3 mT for an hour per day, SNPs (50 ppm) and combination of MF (B=3 mT) and SNPs (50 ppm). Results showed that phenolic content, DPPH radical scavenging, phenylalanine ammonia lyase, polyphenoloxidase, catalase, ascorbate peroxidase, guaiacol peroxidase and glutathione reductase activity were significantly increased by the application of MFs and SNPs as compared to the control group. It seems that the MF+SNPs treatment had the best effect on the antioxidant status of C. officinalis L. and may be suitable alternative for chemical compounds used in agriculture.
- انتشار مقاله: 22-08-1396
- نویسندگان: Elham Jalilzadeh,Rashid Jamei,Siavash Hosseini Sarghein
- مشاهده
- جایگاه : پژوهشی
- مجله: Iranian Journal of Plant Physiology
- نوع مقاله: Journal Article
- کلمات کلیدی: Phenolic compounds,Soybean,UV-B,Photosynthetic pigment
- چکیده:
- چکیده انگلیسی: The effects of UV-B radiation on the amount of chlorophyll a, b, carotenoids, flavonoids, anthocyanins, and polyphenols of three soybean cultivars was studied. After germination in the incubator, plants were put in pots of soil and during 3 weeks and irrigated with Hoagland solution every day. After 3 weeks, plants were exposed to UV-B for 20 min every day for a week. In each cultivar, UV-B reduced chlorophyll a, b, and carotenoids and increased anthocyanins, flavonoids, and polyphenols. The reduction of chlorophyll a and b content was significant between two cultivars Williames, Linfored and L17, Linfored. Carotenoids content showed significant decrease between cultivars Linfored, Williames and Linfored, L17. The anthocyanin and flavonoid contents were affected by UV-B and there was a significant difference in the increase between Williames and L17 and also between L17 and Linfored cultivars. Also increase in phenol content was significantly different between Williames and L17 and also between Williames and Linfored cultivars.
- انتشار مقاله: 25-02-1397
- نویسندگان: Farin Nouri,Siavash Hosseini Sarghein,Rashid Jamei
- مشاهده
- جایگاه : پژوهشی
- مجله: Avicenna Journal of Phytomedicine
- نوع مقاله: Journal Article
- کلمات کلیدی: Flavonoid,Elaeagnus angustifolia,Phenolic compounds
- چکیده:
- چکیده انگلیسی: Objectives: Leaves and flowers ofElaeagnus angustifolia contain phenolic and flavonoid compounds. These compounds have antioxidant properties that protect cells from oxidative damage. The aim of this study was to determine and analyze total phenolic and flavonoid content of leaves and flowers in two E. angustifolia variants using different solvents (ethanol and methanol).
Materials and Methods: Ethanolic and methanolic extracts of the plant leaves and flowers were prepared. Experiments were carried out to measure their phenolic and flavonoid content using two solvents. Data were analyzed using Instat-N software.
Results:Results showed that the amount of phenolic and flavonoid compounds in both ethanolic and methanolic extracts was higher in Fariman variant compared with Mashhad variant. Ethanolic and methanolic extracts of Fariman variant had the highest amount of phenolic compound (10.91±0.18, 10.28± 0.36 mgGAE/100gFW, respectively) and also the highest amounts of flavonoids (5.80±0.10, 3.36±0.05 mgQE/100gFW, respectively). Phenolic and flavonoids compounds were better extracted using methanol and ethanol solvent.
Conclusion: In both varieties and solvents, the amount of phenolic and flavonoids compounds in leaves were higher than flowers. In addition, the phenolic and flavonoids compounds were higher in Fariman compared to Mashhad variants.- انتشار مقاله: 24-06-1392
- نویسندگان: Fereshte Saboonchian,Rashid Jamei,Siavash Hosseini Sarghein
- مشاهده