Rosa damascena is one of the significant Rosa flower in all over the world and one of the famous plant in horticulture history. Rosa flowers will harvest from the first of Ordibehesht to the end of Khordad before rising sun and in the cool air of morning. In the current More
Rosa damascena is one of the significant Rosa flower in all over the world and one of the famous plant in horticulture history. Rosa flowers will harvest from the first of Ordibehesht to the end of Khordad before rising sun and in the cool air of morning. In the current research, a portable machine for flower harvesting designed and developed. This machine contains a cutter, suction pipe, fuel motor, frame, backpack and a cyclone separator. All components of the machine including the motor and the cyclone separator are assembled on frame and transported by workers. Flower cut exactly under the receptacle by a reciprocating cutter and sucked to the flexible pipe by the fuel motor and after that transferred to a cyclone separator. Finally, flower is collected in a canvas bag installed at the end of cyclone. Evaluation of the machine was done using completely randomized design with three treatments and three replications in the flower plain of Lizangan from Darab. The treatments were the revolution of motor shaft in three levels of 900, 1200 and 1500 rpm. The parameters including fuel consumption and harvesting period time in every treatment were measured. The control treatment was considered traditional flower harvesting by hand. Based on the evaluation results, increasing the rpm of motor was caused to increase fuel consumption and decrease the net harvesting period time. Also, harvesting time at maximum revolution of motor was decreased in comparison with hand harvesting.
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Phenolic compounds (flavonoids, tannins, and anthocyanins) are the most important natural antioxidants. Rosa damascene Mill. is one of the most natural medicine, which has been used in Iranian ancient and were cultivated traditionally in different parts of Iran. & More
Phenolic compounds (flavonoids, tannins, and anthocyanins) are the most important natural antioxidants. Rosa damascene Mill. is one of the most natural medicine, which has been used in Iranian ancient and were cultivated traditionally in different parts of Iran. The present study was conducted to investigate the quantitative and qualitative properties of phenolic compounds and antioxidant activity of Rosa damascene Mill. under the influence of two types of fertilizers (livestock manure and fertilizer), as well as two irrigation methods (flushing and dripping) in Kashan university (2015). The total phenolic, flavonoidal, alkaloids, tannin contents and the antioxidant activity were measured by spectrophotometer and DPPH methods, respectively, then all data were analyzed by using SPSS software version 19 and analysis of variance. The results of the phytochemical test confirmed the presence of secondary compounds such as tannin, anthocyanin and flavonoids, and the absence of alkaloids in the extract of this species. Also, the total flavonoid content in the sample used for chemical fertilizer was slightly higher than the other samples. The Livestock manure and flood irrigation treatments showed the highest and lowest phenolic compounds respectively and drip irrigation treatment had the most antioxidant properties. The results of this research were showed that the irrigation and nutrition can be controlled the production, quantity and quality of secondary compounds in plants.
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In this research, due to investigation the effect of extraction time on essential oil composition of 4 genotype of Rosa damascene Mill., the petals of four genotypes of this plant were collected from Rose fields (1320m) of Research Institute of Forest and Rangelan More
In this research, due to investigation the effect of extraction time on essential oil composition of 4 genotype of Rosa damascene Mill., the petals of four genotypes of this plant were collected from Rose fields (1320m) of Research Institute of Forest and Rangelands -Tehran. Essential oils were obtained for 30-150 minutes by hydro- distillation method (Clevenger apparatus) and were analyzed by GC and GC/MS. The results were showed that the major common components included: citronelol (59%), geraniyol (25.8%) and linalool were higher than other genotype in Semnan and the best time for extraction was 90 minutes.
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مقدمه و هدف: یکی از گونه­های ارزشمند­­­ ودارویی تیره ­ی گلسرخ(Rosaceae)، گل محمدی با نام علمی (RosadamasceneMill.) می­باشد. اسانس این گیاه خاصیت ضدباکتریایی، ضدمیکروبی و آنتی­ اکسیدانی دارد. به منظور بررسی خصوصیات فیتوشیمیایی ا More
مقدمه و هدف: یکی از گونه­های ارزشمند­­­ ودارویی تیره ­ی گلسرخ(Rosaceae)، گل محمدی با نام علمی (RosadamasceneMill.) می­باشد. اسانس این گیاه خاصیت ضدباکتریایی، ضدمیکروبی و آنتی­ اکسیدانی دارد. به منظور بررسی خصوصیات فیتوشیمیایی این گونه در استان چهارمحال و بختیاری، تحقیق حاضر در رویشگاه ­های مختلف شمال استان چهارمحال و بختیاری در بهار سال 1396 انجام شد. روش تحقیق: این گیاه از پنج منطقه در استان، شامل شهرکرد، سامان، چمچنگ، چغاخور و منطقه بن در مرحله­ی گلدهی کامل جمع آوری شد. از نمونه­ های گیاهی جمع­آوری شده در سه تکرار با روش تقطیر با آب، اسانس­گیری به عمل آمد. اسانس­­ها با استفاده از گازکروماتوگرافی متصل به طیف سنج جرمی GC/MS تجزیه­ی شیمیایی شدند. نتایج و بحث: با توجه به نتایج تجزیه فیتوشیمی اسانس، حدود 19 ترکیب شناسایی شد که تقریباً در حدود 100-80 درصد از کل اسانس را شامل می­شود. مهمترین ترکیبات عبارت از: سیکلوهگزان، منتون، منتول، سیترونلول، تیمول، متیل استات، ایزوبوتیل فتالات، هپتادکان، نانودکان، هنیکوزان، تریکوزان بودند. نتایج تجزیه داده­ ها نشان داد که تفاوت معنی ­داری بین ترکیبات گیاه گل محمدی در مناطق مورد مطالعه وجود دارد. بهترین اکوتیپ به لحاظ داشتن هنیکوزان و هپتادکان جمعیت­های جمع ­آوری شده از منطقه چمچنگ، به لحاظ داشتن تیمول، جمعیت جمع­ آوری شده از منطقه شهرکرد و بهترین جمعیت از لحاظ سیترونلول منطقه چغاخور و بهترین اکوتیپ از لحاظ منتول منطقه بن، بهترین منطقه از لحاظ منتون و سیکلوهگزان منطقه سامان می­باشد. توصیه کاربردی/ صنعتی: می­توان نتیجه گرفت علاوه بر عوامل ژنتیکی، عوامل محیطی هم به عنوان عامل اصلی در میزان ترکیبات ثانویه گیاه نقش دارند و بر اساس ترکیبات دارویی مورد نیاز می توان اقدام به جمع آوری گل محمدی از مناطق مختلف نمود.
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