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Showing 3 results for امواج فراصوت
Response Surface Methodology for Optimization of Ultrasound-assisted Inulin Extraction from Burdock Tuberous
E Milani , R Kadkhodai , Q.a Golimovahhed , F Hosseini ,
year 11, Issue 42 (5-2012)
Abstract

  Background: Inulin has been increasingly used due to its beneficial nutritional attributes as prebiotic ingredient and nutritional values. The burdock tuberous could be a source of inulin. Now a day's Ultrasound has attracted considerable interest in food science and technology due to its promising effects in food processing and preservation. The ultrasonically induced cavitations were shown to increase the permeability of the plant tissues. The mechanical effects of ultrasound provide a greater penetration of solvent into cellular materials. In some cases direct sonication increased the efficiency of extraction at lower temperatures and shorter time.

  Objective: Optimization of extraction conditions for burdock tubers using sonication.

  Methods: In this research, a series of statistically designed studies such as central composite design (CCD) and response surface methodology (RSM) were performed to investigate the effect of each of the independent variables, ultrasonic waves (20-100%), exposure time (5-25 min) & treatment temperature (20-60 ° C) on yield of inulin extraction from burdock tubers. Response surface methodology was employed to optimize multiple variables to predict the best performance conditions with a minimum number of experiments. According to Determination of inulin content of extraction liquid, Total carbohydrate and Reducing sugar were determined and finally the inulin content was measured with the difference between total carbohydrate and reducing sugars. Inulin extraction yield (%) was calculated using the following relationship = (inulin content × volume of extraction liquid/mass of Burdock tuber powder) ×100.

  Results: Based on canonical analysis, the optimal conditions for maximizing inulin extraction yield (24.36%) were at 36.85 °C for 25.4 min and amplitude of 83.2%.

Conclusions: application of ultrasound would be a promising method to enhance the extraction process.

Simultaneous ultrasound-assisted hydrodistillation of essential oil from aerial parts of the Satureja khuzistanica Jamzad and its antibacterial activity
Seyed Reza Rasouli, Samad Nejad Ebrahimi, Hassan Rezadoost,
year 20, Issue 80 (12-2021)
Abstract
Background: Ultrasonic assisted extraction (UAE) is a robust and efficient method as a desirable alternative to conventional strategies for extracting active ingredients from different parts of plants. Coupling this technique with hydrodistillation is an effective method for producing essential oil from plant material. Objective: In this study, we successfully combined ultrasonic technology with hydrodistillation (HD) and optimized the system to reduce the time of the isolation and increase the yield of the essential oil obtained from Stureja khuzistanica Jamzad (SK). Methods: In the next step, isolation time, yield, and quality of essential oils obtained by conventional and ultrasonic-assisted methods were compared. Ethyl acetate (EA) was used to recover the remaining essential oil in the distillate. Results: All oils and distillates were analyzed qualitatively and quantitatively via the GC-FID and GC-MS techniques. The minimum inhibitory concentration (MIC) of SK essential oil against Escherichia coli (0.5 mg/ml to 8.0 mg/ml) and Staphylococcus aureus (0.25 mg/ml to 8.0 mg/ml) were calculated. Conclusion: Our results show that while the obtained essential oils chemical profile and biological properties are comparable, this method can enhance essential oil isolation yield efficiency by up to 40 %.

Phytochemical investigation among different populations of Papaver bracteatum Lindl. using ultrasonic - assisted extraction method followed by HPLC analysis
Alireza Habibzade, Nasrin Moshtaghi, Saeid Malekzadeh-Shafaroudi,
year 20, Issue 80 (12-2021)
Abstract
Background: Papaver bracteatum Lindl. (Persian poppy) has a very long history as the major source of natural alkaloids. Among Papaver species, Persian poppy can be considered as a rich source of thebaine. Objective: The purpose of this study was to evaluate the thebaine content in different organs and different populations of Persian poppy. Methods: Seven populations of Persian poppy were collected from five different geographical regions of Iran including Damavand (Rineh, Abask), Chalous (Yoush, Pol-e Zanguleh), Mahabad, Meshgin Shahr and Zanjan (Taham) and were screened for its thebaine content. Extraction of thebaine was performed using the ultrasonic-assisted extraction (UAE) method. The parameters including pH, amount of solvent, extraction temperature and time, the repetition of extraction cycles and also the particle size were investigated and optimal conditions were determined to reach the maximum efficiency. Also, the correlation between phenology of the plant and thebaine content was studied during the developmental stages of poppy from pre-flowering to lancing. The developed UAE method followed by high performance liquid chromatography (HPLC) was used for quantitative analysis. Results: Thebaine content was significantly different in various organs and populations grew at different regions. The thebaine content was in the range of 0.9-1.4 % and 0.1-0.45 % in capsules and stems, respectively. The highest thebaine content was obtained in the capsules of Mahabad population. Conclusion: Extraction led to a high purity thebaine from Persian poppy. Eventually, a comprehensive profile of thebaine in different Persian poppy populations from different geographical regions in Iran was released.

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