List of Articles Sound waves

• Open Access Article
  • Abstract Page
  • Full-Text
  
  1 - Optimization of Canola Oil Extraction by Ultrasound Waves and Response Surface Methodology
  F. Jalili S. M. Jafari Z. Emamjomeh M. Kashaninejad M. Ganjeh
  Introduction: Canola seed is one of the most important oil seed with high ratio of oil andhigh nutritional value and is economically recommended for cultivation and oil extraction.Extraction with ultrasound waves as a nondestructive and novel method might be employed.Th More

  Introduction: Canola seed is one of the most important oil seed with high ratio of oil andhigh nutritional value and is economically recommended for cultivation and oil extraction.Extraction with ultrasound waves as a nondestructive and novel method might be employed.Therefore the aim of this research is optimization of extraction of canola oil by ultrasoundwaves and RSM.Materials and Methods: In this project, Response Surface Methodology was employed foroptimization of canola oil extraction by ultrasound waves using hexane andhexane/isopropanol as solvents by the ratio of 3:2 (v/v). The influence of extractiontemperature in the range of 35, 45 and 55℃, ultrasound treatment time for 30, 60 and 90minutes and ratio of solvent to canola in three levels of 5, 10 and 15 ml/g were analyzed byBox-Behnken Design (BBD) based on extracted oil percent. The fatty acid compositions ofthe extracted oils using ultrasound-assisted method and soxhlet method employing gas liquidchromatography were determined and compared.Results: According to the high values of correlation coefficients of selected models optimizedfor hexane solvent extraction methods (R2 =0.93) and hexane-isopropanol solvent mixture(R2 =0.97) and no significant lack of fit tests (P>0.05) selected models might be useful topredict the extraction percentage of canola oil.Conclusion: The results showed that the optimum conditions for canola oil extraction byhexane (22.39 %) and combined hexane/isopropanol (30.66 %) were respectively atultrasound treatment times of 69.5 and 87 minutes, temperatures of 55 and 55 ℃ and ratio ofsolvent to canola of 6.39 and 9.12 (%v/w). Extraction efficiency was significantly improvedby ultrasound as compared to the soxhlet extraction. Fatty acid compositions of the canolaoils were not significantly affected by the application of ultrasound (P> 0.05). Thereforeultrasound might be regarded as a simple and rapid method to improve the extraction of oilwithout affecting the quality of the fatty acids present. Manuscript profile
• Open Access Article
  • Abstract Page
  • Full-Text
  
  2 - Sound Wave Propagation in a Multiferroic Thermo Elastic Nano Fiber Under the Influence of Surface Effect and Parametric Excitation
  R Selvamani J Rexy R Kumar
  10.22034/jsm.2019.1879155.1501
  Manuscript profile
• Open Access Article
  • Abstract Page
  • Full-Text
  
  3 - Application of ultrasonic method in extracting plant extracts
  Fatemeh kavian Mohammad Masjedi
   Natural extracts from plants are one of the most important primary sources for the preparation of preservatives, flavorings, cosmetics, perfumery, dyes, and medicines. Extracting effective substances and natural extracts from different plants is a very important t More

   Natural extracts from plants are one of the most important primary sources for the preparation of preservatives, flavorings, cosmetics, perfumery, dyes, and medicines. Extracting effective substances and natural extracts from different plants is a very important thing that researchers in different fields pay special attention to. Considering the need of societies to extract effective plant compounds, it has led to wider researches in the field of introducing extraction processes. There are various extraction methods to extract active plant compounds. Traditional methods of obtaining natural compounds of plants, such as water distillation or steam extraction and extraction with organic solvent, have disadvantages such as loss of volatile compounds, low efficiency, long extraction time, destruction of unsaturated compounds and the remaining toxic solvent. In order to improve the efficiency of extracting effective substances from medicinal plants, new methods have been invented. One of these methods is the use of ultrasound waves. The purpose of this study is to know more about the new method of extraction with the help of ultrasound waves, along with its advantages and disadvantages compared to other methods. According to the results of this study, ultrasonic extraction method is a new, fast, efficient and cost-effective method for extracting effective compounds from plant texture.  Manuscript profile