Kinetics on the Ultrasonic-Assisted Extraction of Polysaccharides from Limonium bicolor kunze (Bge.)

2014 ◽  
Vol 1003 ◽  
pp. 3-6
Author(s):  
Xiao Song ◽  
Peng Zhao ◽  
Qing Hua Meng ◽  
Zhi Shu Tang ◽  
Chang Li Wang
Keyword(s):  
Kinetic Equation ◽  
Extraction Process ◽  
Ultrasonic Extraction ◽  
Second Law ◽  
Technical Design ◽  
Kinetics Parameters ◽  
Limonium Bicolor ◽  
Assisted Extraction ◽  
Ultrasonic Assisted ◽  
Ultrasonic Assisted Extraction

To explore the kinetics parameters in the ultrasonic-assisted extraction from Limonium bicolor Kunze (Bge.) , the kinetic equation for polysaccharide ultrasonic extraction process was established with ball model. According to Fick’s second law of diffusion, extraction process was analysed. The results can provide the valuable theory basis for the technical design and further research of polysaccharide extraction process.

Kinetics on the Ultrasonic-Assisted Extraction of Polysaccharide from Tussilago farfara L

2013 ◽  
Vol 763 ◽  
pp. 203-206
Author(s):  
Peng Zhao ◽  
Xiao Song
Keyword(s):  
Kinetic Equation ◽  
Extraction Process ◽  
Ultrasonic Extraction ◽  
Second Law ◽  
Technical Design ◽  
Kinetics Parameters ◽  
Tussilago Farfara ◽  
Assisted Extraction ◽  
Ultrasonic Assisted ◽  
Ultrasonic Assisted Extraction

To explore the kinetics parameters in the ultrasonic-assisted extraction from Tussilago farfara L , the kinetic equation for polysaccharide ultrasonic extraction process was established with ball model. According to Ficks second law of diffusion, extraction process was analysed. The results can provide the valuable theory basis for the technical design and further research of polysaccharide extraction process.

scholarly journals Chemical composition of ultrasonic-assisted n-hexane extracts of Sideritis scardica Grieseb. and Sideritis raeseri Boiss. & Heldr. (Lamiaceae) from Macedonia and Albania

2011 ◽  
Vol 56 ◽  
pp. 45-56 ◽  
Author(s):  
Bujar Qazimi ◽  
Marija Karapandzova ◽  
Gjose Stefkov ◽  
Svetlana Kulevanova
Keyword(s):  
Fatty Acids ◽  
Chemical Composition ◽  
Plant Material ◽  
Extraction Process ◽  
Triterpene Alcohols ◽  
Assisted Extraction ◽  
Aromatic Alcohols ◽  
Ultrasonic Assisted ◽  
Hexane Extracts ◽  
Ultrasonic Assisted Extraction

Chemical composition of n-hexane extracts obtained from dried over-ground parts of two species of Sideritis, S. scardica Grieseb. and S. raeseri Boiss. & Heldr. (Lamiaceae) was analyzed using GC/FID/MS. The collection of plants was made on different locations in the western part of Macedonia and the southern part of Albania, comprising twelve different samples of plant material. The ultrasonic-assisted extraction process was used for preparation of the n-hexane extracts yielded 0.73-3.33 % and 9.11-10.44 % of extracts for S. scardica and S. raeseri, respectively. Over one hundred constituents of the extracts were identified, belonging to several classes of components: diterpenes, hydrocarbons, dominantly present in each of the extracts, followed by fatty acids, aliphatic and aromatic alcohols, sterols, triterpene alcohols, and monoterpenes and sesquiterpenes, which were found in much smaller amounts or only in traces. The most abundant constituents of the extracts of both species of Sideritis were two diterpene components, both with M=286, which were not fully identified. Large percentages of nonacosane (1.71-12.22% and 7.46-19.68% for S. scardica and S. raeseri, respectively) and hentriacontane (4.48-20.79% and 8.09-30.31 % for S. scardica and S. raeseri, respectively) were also found in the extracts of both species.

scholarly journals Antioxidant Activity of Extract from Ultrasonic-Assisted Extraction of Durian Peels

2018 ◽  
Vol 5 (2) ◽  
Author(s):  
Bambang Kunarto ◽  
Ely Yuniarti Sani
Keyword(s):  
Antioxidant Activity ◽  
Total Phenolics ◽  
Extraction Process ◽  
Extraction Time ◽  
Total Flavonoids ◽  
Assisted Extraction ◽  
Ultrasonic Assisted ◽  
Total Flavonoids Content ◽  
Phenolics Content ◽  
Ultrasonic Assisted Extraction

The increase in durian production results in the accumulation of durian peel waste. The bioactive component of durian peel has the potential to be used as an antioxidant. Thus, there is a need to carry out an extraction process to obtain  bioactive compounds from durian peel. However, conventional extraction methods cause damage to phenolic compounds due to oxidation, hydrolysis and ionization reactions during the extraction process. Therefore, durian peel extraction was carried out using ultrasonic assisted extraction method (UAE) in this study. The purpose of this study was to investigate the effect of varying ratios of durian peel to ethanol solvents and extraction time on the yield, total phenolics content, total flavonoids content and antioxidant activity. The results of the research data were analyzed using a two-factor completely randomized design, which included variations of the ratio of durian peel to ethanol solvents and extraction time The Duncan’s New Multiple Range Test (DNMRT) was carried out as a follow up test to determine the differences in each treatment at a significance level of 0.05. The results showed that the best treatment for peel extraction using ultrasonic assisted extraction was a 1: 9 ratio of durian peel to ethanol at an extraction time of 20 minutes. The extraction of durian peel under this condition gave the highest yield of 12.77 ± 0.16%, antioxidant activity (IC50) of 38.33 ± 0.12 ppm, total phenolic content of 63.30 ± 0.08 mgGAE / g and total flavonoids content of 47.53 ± 0.48 mgQE / g. In addition, total phenolics content and total flavonoid content showed a strong correlation to the antioxidant activity of durian peel extract.

scholarly journals Optimization of Extraction Conditions of Bioactive Compounds by Ultrasonic-Assisted Extraction from Artichoke Wastes

2021 ◽  
Vol 68 (3) ◽  
pp. 658-666
Author(s):  
Izzet Turker ◽  
Hilal Isleroglu
Keyword(s):  
Antioxidant Capacity ◽  
Bioactive Compounds ◽  
Extraction Process ◽  
Extraction Yield ◽  
Extraction Time ◽  
Total Phenolic ◽  
Assisted Extraction ◽  
Ultrasonic Assisted ◽  
Extraction Processes ◽  
Ultrasonic Assisted Extraction

In this study, bioactive compounds were extracted by ultrasonic-assisted extraction and classical extraction processes using distilled water as solvent from artichoke leaves which are considered as agricultural wastes. Antioxidant capacity, total phenolic and total flavonoid content values of the obtained bioactive extracts were determined, and extraction yields and times were evaluated to compare the extraction processes. Also, the optimum extraction conditions of ultrasonic-assisted extraction (extraction time and ultrasonic power) which provide the highest extraction yield were determined using D-optimal design by ‘desirability’ function approach. According to the results, bioactive extracts having high antioxidant capacity were obtained at shorter times and higher extraction yields were achieved by ultrasonic-assisted extraction process than classical extraction. The highest extraction yield was estimated as 98.46% with an application of 20.05 minutes of extraction time and 65.02% of ultrasonic amplitude for the ultrasonic-assisted extraction process.

scholarly journals Optimasi Ekstraksi Berbantu Gelombang Ultrasonik pada Biji Melinjo Kerikil (Gnetum gnemon L., ‘Kerikil’) Menggunakan Response Surface Methodology

2019 ◽  
Vol 8 (3) ◽  
pp. 104
Author(s):  
Bambang Kunarto ◽  
Sutardi Sutardi ◽  
Supriyanto Supriyanto ◽  
Chairil Anwar
Keyword(s):  
Response Surface Methodology ◽  
Response Surface ◽  
Reducing Power ◽  
Extraction Process ◽  
Extraction Methods ◽  
Total Phenolic ◽  
Ultrasonic Bath ◽  
Assisted Extraction ◽  
Ultrasonic Assisted ◽  
Ultrasonic Assisted Extraction

Biji melinjo kerikil mengandung senyawa fenolik dan resveratrol sehingga berpotensi sebagai antioksidan, oleh karena itu perlu dilakukan ekstraksi. Metoda ekstraksi konvensional (maserasi, perebusan, refluxing) mempunyai kelemahan yaitu terjadinya kerusakan senyawa fenolik akibat reaksi oksidasi, hidrolisis dan ionisasi selama proses ekstraksi. Oleh karena itu, pada penelitian ini ekstraksi biji melinjo kerikil dilakukan menggunakan metode ekstraksi berbantu gelombang ultrasonik. Penelitian ini bertujuan untuk optimasi ekstraksi biji melinjo kerikil berbantu gelombang ultrasonik yang dilakukan pada berbagai waktu ekstraksi, suhu ekstraksi dan konsentrasi pelarut etanol. Surface response methodology digunakan untuk optimasi kondisi ekstraksi. Biji melinjo kerikil diekstrak menggunakan ultrasonic bath pada frekuensi 40 kHz dengan berbagai suhu (25, 30, 35, 40, 45oC), waktu ekstraksi (10, 20, 30, 40, 50 menit) dan konsentrasi pelarut etanol (40, 50, 60, 70 80%). Hasil penelitian menunjukkan bahwa kondisi optimum ekstraksi biji melinjo kerikil berbantu gelombang ultrasonik adalah pada suhu 30,18oC, waktu 33,01 menit dan konsentrasi pelarut etanol 71,04%. Pada kondisi ini, diperoleh yield ekstrak 18,41 ± 0,01%, total fenolik 11,26 ± 0,06 mg GAE/g, total flavonoid 533,70 ± 0,18 mg CE/100g, resveratrol 7,64 ± 0, 03%, IC50 sebesar 59,52 ± 0,04 ppm dan reducing power 76,31 ± 0,08%. Sebagai kesimpulan, optimasi ekstraksi biji melinjo kerikil berbantu gelombang ultrasonik menggunakan response surface methodology ini cukup baik karena nilai respon yang sebenarnya sesuai dengan nilai respon yang diprediksi.Melinjo kerikil seeds contain phenolic and resveratrol compounds so that it has the potential as an antioxidant, therefore extraction needs to be done. Conventional extraction methods (maceration, boiling, refluxing) have the disadvantage of devasting phenolic compounds due to oxidation, hydrolysis and ionization reactions during the extraction process. Therefore, in this study the extraction of melinjo kerikil seeds done by using the ultrasonic-assisted extraction method. The study aims to optimize ultrasonic-assisted extraction of melinjo kerikil seeds that be done at various extraction times, extraction temperatures and ethanol solvents concentrations. Response surface methodology was used to optimize experimental condition for extraction. Melinjo kerikil seeds were extracted by using ultrasonic bath at a frequency of 40 kHz with various temperatures (25, 30, 35, 40, 45oC), extraction time (10, 20, 30, 40, 50 minutes) and ethanol solvents concentrations (40, 50, 60, 70 80 %). The results showed that the optimum conditions for ultrasonic-assisted extraction of melinjo kerikil seeds were at a temperature of 30.18oC, a time of 33.01 minutes and an ethanol solvent concentration of 71.04%. In this condition, obtained the extract yield 18.41 ± 0.01%, total phenolic 11.26 ± 0.06 mg GAE/g, total flavonoids 533.70 ± 0.18 mg CE/100g, resveratrol 7.64 ± 0,03%, IC50 in the amount of 59.52 ± 0.04 ppm and reducing power 76.31 ± 0.08%. As a conclusion, the optimization ultrasonic-assisted extraction of melinjo kerikil seeds by using response surface methodology is quite good because the actual response value is in accordance with the predicted response value.

scholarly journals Response surface optimization of ultrasonic assisted extraction of flavonoids from Brucea javanica

2018 ◽  
Vol 238 ◽  
pp. 04005
Author(s):  
Aiping Fei ◽  
Junyu Jiang ◽  
Yong Wang ◽  
Zhigang Fang ◽  
Yingxue Teng ◽  
...  
Keyword(s):  
Response Surface ◽  
Extraction Process ◽  
Process Conditions ◽  
Brucea Javanica ◽  
Response Surface Optimization ◽  
Assisted Extraction ◽  
Ultrasonic Assisted ◽  
Ultrasonic Assisted Extraction ◽  
Surface Optimization ◽  
Optimum Extraction

This text was mainly studied the response surface optimization of ultrasonic assisted extraction of flavonoids from Brucea javanica. The optimum extraction process conditions were obtained by color reaction to prove the presence of flavonoids and by response surface simulation and quantification, the optimum condition was: ethanol concentration was 90%, the ratio of liquid to solid was 10:1, and the extraction time was 2h, the total extraction rate was the largest, up to about 1.43%.

scholarly journals Optimization and Isolation of 4,8,12,16-Tetramethylheptadecan-4-olide from Deinbollia pinnata

2019 ◽  
Vol 31 (11) ◽  
pp. 2503-2511
Author(s):  
Y. Rufai ◽  
N. Basar ◽  
A. Sani
Keyword(s):  
2D Nmr ◽  
Bulk Sample ◽  
Extraction Process ◽  
High Yield ◽  
Solvent Ratio ◽  
Isolation And Purification ◽  
Assisted Extraction ◽  
Sample Extraction ◽  
Ultrasonic Assisted ◽  
Ultrasonic Assisted Extraction

Manual agitation on ultrasonic assisted extraction process, fractionation, isolation and purification afforded 4,8,12,16-tetramethylheptadecan-4-olide (1) along with 11 compounds 2-12 i.e., squalene (2), phytyl palmitate (3), lupeol (4), taraxasterol (5), myristic acid (6), palmitic acid (7), campesterol (8), stigmasterol (9), λ-sitosterol (10), stigmastan-3, 5-diene (11) and stigmasta-5,22-diene-3-ol acetate (12). Their structures were elucidated spectroscopically (2D NMR, IR, GC-MS and 1D NMR). The optimal conditions for high yield of extracts were obtained at 45 °C, after 35 min and solvent ratio 50:50 mL for 83.01 % yield; which was applied on agita-sonication process for bulk sample extraction of D. pinnata leaves with single solvent at a time. Thus, this work provides alternative method to overcome large sample extraction for phyto-constituents of isolation of 4,8,12,16-tetramethylheptadecan-4-olide (1) with ten other compounds from this specie pinnata and genius Deinbollia except stigmasterol (9).

scholarly journals Filter Cake Oil-Wax as Raw Material for the Production of Biodiesel: Analysis of the Extraction Process and the Transesterification Reaction

2015 ◽  
Vol 2015 ◽  
pp. 1-9 ◽  
Author(s):  
L. Casas ◽  
Y. Hernández ◽  
C. Mantell ◽  
N. Casdelo ◽  
E. Martinez de la Ossa
Keyword(s):  
Supercritical Fluid Extraction ◽  
Supercritical Fluid ◽  
Extraction Process ◽  
Transesterification Reaction ◽  
Raw Material ◽  
Fluid Extraction ◽  
Assisted Extraction ◽  
Ultrasonic Assisted ◽  
Ultrasonic Assisted Extraction ◽  
Orbital Shaker

The viability of using the waste obtained in the manufacture of sugar from sugarcane for the production of biodiesel has been analyzed. Two fundamental stages are necessary to obtain biodiesel; the first stage is the extraction process from the waste oil materials and the second is the transesterification reaction. Four techniques, Soxhlet, orbital shaker extraction, ultrasonic-assisted extraction, and supercritical fluid extraction, have been analyzed. For Soxhlet, orbital shaker extraction, and ultrasonic-assisted extraction, the organic solvent (hexane) was maintained for all experiment. In supercritical fluid extraction two solvents were evaluated: pure CO2and mixtures of CO2and 5% (v : v) methanol. The reaction kinetics of the transesterification reaction with an acidic catalyst and a basic catalyst were analysed. The results show that the supercritical extraction process produces a better product for the subsequent transesterification reaction. This finding is attributed to the high selectivity of carbon dioxide in the recovery of fatty acids and triglycerides in comparison with other solvents.

scholarly journals Study on the Optimization for the Extraction Process of Andrographolide by Ultrasonic Assisted Extraction

2021 ◽  
pp. 08-17
Author(s):  
KiBong Kim ◽  
IlJin Kim ◽  
SongLok Uh ◽  
YongIl Seo ◽  
CholKwang Li ◽  
...  
Keyword(s):  
Optimum Condition ◽  
Response Surface ◽  
Folk Medicine ◽  
Solution Concentration ◽  
Extraction Process ◽  
Extraction Temperature ◽  
Assisted Extraction ◽  
Ultrasonic Assisted ◽  
Ultrasonic Assisted Extraction ◽  
Medical Role

Because andrographis has a long history of folk medicine in Southeast Asian countries with antibacterial, antipyretic, antineoplastic, anti-inflammatory, cardioprotective effect and so on, the areas where andrographolia is introduced and cultivated are mainly concentrated. Espically andrographolide, neoandrographolide, andrographiside, homoandrographolide, andrographane, andrographanin, andrographone and andrographosterol that is concentrated in the leaves of the plant play the main medical role of andrographis. Of the above chemicals, andrographolide is the major bioactive constituent responsible for variety of activities. Leaves and stems of plant are used for extracting active phytochemicals; roots are used rarely. In this study, improved the extractability of andrographolide from the A. paniculata by ultrasonic assisted extraction, the optimum condition for extracted the andrographolide is determined by response surface experiment and detected the extractability of andrographolide under the optimum condition. By single factor analysis and response surface experiments, the optimum conditions for extracted the andrographolide were the extraction solution concentration 62.8%, the ultrasonic extraction time 59min, the ratio of solid to liquid 1:10.5 and the extraction temperature 62?. Investigate the andrographolide extractability in the optimun extraction condition by HPLC were increased from 2.27% to 3.28%.

Sign in / Sign up

Export Citation Format

Share Document