List of Articles Micro extraction

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  1 - Chemical Composition of Rosemary and Dianthus Floral Waters by Dispersive Liquid Liquid Micro Extraction Followed by Identification of compounds using GC-MS
  Fereshte Nematollahi Kambiz Larijani Sirvan Mohammadi Azar
  Introduction: Customers prefer to use natural extracts instead of the synthetic products. The consumption of floral waters and extracts has become quite popular as a mean to overcome and relieve some slight problems and sicknesses. The economics, yields and purity of th More

  Introduction: Customers prefer to use natural extracts instead of the synthetic products. The consumption of floral waters and extracts has become quite popular as a mean to overcome and relieve some slight problems and sicknesses. The economics, yields and purity of the extracts are important factors to consider. Suitable analytical extraction and statistical methods are required to help us for experimental design.Materials and Methods: Floral water of Rosemary and Dianthus were obtained from traditional companies. Analytical grade solvents were purchased from Merck chemical company of Germany. Different solvents namely ethanol, methanol, carbon tetrachloride and chloroform were employed for the extraction. The extracts were injected to GC- MS apparatus and the peaks were identified.Results: Statistical analysis indicated that with minimum volume of solvent mixtures of (442 QL of ethanol, 20 QL of carbon tetrachloride) extraction is accomplished. More than 88% of compounds in Rosemary and almost 100% of compounds in Dianthus floral waters are characterized.Conclusion: In this study, response surface method has been applied for optimization and it was shown that this method could be designed for the best micro extraction condition with the application of lowest volume of solvents. Manuscript profile
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  2 - بررسی پروفایل روغن های اسانسی حاصل از اندام های هوائی گیاه پونه سای البرزی با استفاده از روش های کلاسیک و روش های مبتنی بر مایکروویو: مقایسه با اجزاء فرار با استفاده از میکرواستخراج فاز جامد فضای فوقانی
  مجید محمدحسینی
  زمینه و هدف: گیاه پونه سای البرزی یک گیاه داروئی بوده و این گزارش به شناسائی ساختارهای شیمیائی روغن های اسانسی و اجزاء فرار حاصل از اندام های هوائی این گیاه با استفاده از روش های سنتی و پیشرفته اختصاص دارد. روش تحقیق: پروفایل های شیمیائی روغن های اسانسی و اجزاء فرار حاص More

  زمینه و هدف: گیاه پونه سای البرزی یک گیاه داروئی بوده و این گزارش به شناسائی ساختارهای شیمیائی روغن های اسانسی و اجزاء فرار حاصل از اندام های هوائی این گیاه با استفاده از روش های سنتی و پیشرفته اختصاص دارد. روش تحقیق: پروفایل های شیمیائی روغن های اسانسی و اجزاء فرار حاصل از اندام های هوائی گیاه پونه سای البرزی با استفاده از روش تقطیر با آب، استخراج مایکروویو بدون حلال، تقطیر با آب به کمک مایکروویو و میکرواستخراج فاز جامد فضای فوقانی، در ادامه با دستگاه های کروماتوگراف گازی و کروماتوگراف گازی- طیف سنج جرمی مورد بررسی قرار گرفتند. نتایج و بحث: مجموعاً، 25، 26، 24 و 24 جزء در پروفایلهای شیمیائی شناسائی شدند که به ترتیب 98/1،96/6، 97/7 و 96/4 درصد کل ساختار را در بر می گیرند. در تمامی نمونه ها (به استثناء پروفایل حاصل از روش تقطیر با آب به کمک مایکروویو) بیشترین فراوانی متعلق به مونوترپن های اکسیژن دار بود در حالیکه در ساختار روغن استحصال شده به روش تقطیر با آب به کمک مایکروویو مونوترپن های هیدروکربنه بیشترین درصد را در اختیار داشتند. ترکیب ۴-آ-آلفا، ۷-آلفا، ۷-آ-آلفا، نپتولاکتون فراوان ترین ترکیب در روش های تقطیر با آب، استخراج مایکروویو بدون حلال و میکرواستخراج فاز جامد فضای فوقانی و ترکیب ۴-آ-آلفا، ۷-آلفا، ۷-آ-بتا نپتولاکتون، به عنوان مونوترپن اکسیژن دار وافر در روش تقطیر با آب به کمک مایکروویو، شناسائی شد. توصیه های صنعتی و عملی: استفاده از روش های جداسازی پیشرفته برای استحصال روغن های اسانسی سودمند، مقرون بصرفه زمانی بوده و در مقایسه با روش های سنتی و کلاسیک بمراتب مناسبتر هستند. بعلاوه، اهمیت این مطالعه، ریشه در این حقیقت دارد که روغن های اسانسی سرشار از مونوترپن های اکسیژن دار و مونوترپن های هیدروکربنه می توانند محافظت کننده های قوی فرآورده های غذائی و آنتی اکسیدان هائی بی نظیر باشند. Manuscript profile
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  3 - Fast Removal of Citalopram Drug from Waste Water Using Magnetic Nanoparticles Modified with Sodium Dodecyl Sulfate Followed by UV-Spectrometry
  M. Khoeini Sharifabadi M. Saber Tehrani A. Mehdinia P. Abroomand Azar S. Waqif Husain
  10.22034/jchr.2018.544046
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  4 - Determination of Zinc Ions in Environmental Samples by Dispersive Liquid- Liquid Micro Extraction and Atomic Absorption Spectroscopy
  F. Arabi A. Emami Meibodi F. Aflaki
  10.22034/jchr.2018.544000
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  5 - Comparison of (HS-SPME) method and innovative microwave-assisted steam hydro-diffusion (MSHD) method in extraction of volatile compounds and essential oils from medicinal plants and aromatic herbs
  sayedeh mansoureh memarzadeh Abdollah Ghasemi pirbalouti Ali Gholami Sayed Ahmad Nourbakhsh
  Introduction: Medicinal plants are those plants whose organs have effective medicinal compounds. Due to the good clinical experiences, these plants have a special place in treatment and do not have destructive effects on the environment. Secondary metabolites have a gre More

  Introduction: Medicinal plants are those plants whose organs have effective medicinal compounds. Due to the good clinical experiences, these plants have a special place in treatment and do not have destructive effects on the environment. Secondary metabolites have a great effect on plant protection, and essential oils are an important group of secondary compounds. Since the extraction method is effective on the yield, percentage and type of chemical compounds obtained from medicinal, spicy and aromatic plants and also the examination of different plants is done based on their chemical profile, so the purpose of this research is to compare the chemical profile of the Bakhtiari savory. Satureja bachtiarica Bunge. as a species of Lamiaceae family by head space solid phase micro extraction (HS-SPME) and microwave –assisted steam hydro-diffusion (MSHD) method.Experimental:  The aerial parts of Satureja bachtiarica Bunge. were collected in the beginning of May from the mountans of Chaharmahal and Bakhtiari province up to 5 cm above the ground level in 2021, and after confirming the herbarium number and drying in standard conditions, essential oil extraction was performed in a special balloon (patent number: 89031 in Iran) in a microwave device. And the obtained essential oil was analyzed by gas chromatography/mass spectrometery (GC/MS). The amount of 0.5 grams of the plant was directly tested in a 20 ml glass vial for 20 minutes at 85 degrees Celsius by (HS-SPME/GC/MS). No more than 5 days have passed since the plant was prepared.Results and Disscussion: The results of statistical tests showed a significant difference in the chemical profile of essential oils obtained from two different extraction methods (p≤0.05). The highest amount of hydrocarbon monoterpenes was obtained from the (HS-SPME) method, while the highest amount of oxygenated monoterpenes was obtained from the (MSHD) method. There was a significant difference between the main compounds of essential oils obtained from different extraction methods, including thymol, carvacrol, para-cymene, gamma-terpinene (p≤0.05). The highest percentage of p-cymene and Ɣ-terpinene was related to the (HS-SPME) method, while the two main compounds of the essential oil, thymol and carvacrol, had a significant decrease in this method. In addition, the highest amount of thymol and carvacrol was obtained from the (MSHD) method. The advantages of this innovative extraction method are reduction of extraction time (30 minutes), high yield of essential oil (1.2%), energy saving (consumed energy 0.53 kWh), increase of oxygenated monoterpenes (68.06 ±3.75%), antioxidant activity and high amount of total phenol. Microwave-assisted steam hydro diffusion (MSHD) is the optimal method for extraction of essential oil from Bakhtiari savory. In the microwave-assisted extraction method, short extraction time, energy saving, high efficiency, and good quality of the obtained essential oil have made this "Green and eco-friendly technology " as a promising tool for extracting essential oils from medicinal plants and aromatic herbs in pharmaceutical, food, cosmetic, health and perfumery industries.In the phytochemical analysis of Satureja bachtiarica Bunge. by (HS-SPME) method, the amount of hydrocarboned monoterpenes increased significantly (75.73 ± 1.54%), it can be concluded that (HS-SPME) method is a reliable, simple and unique method for Identification and measurement of volatile and light compounds in medicinal, spicy and aromatic plants. Manuscript profile