Research on the Extraction of Dendranthema Morifolium Volatile Oils by Microwave-Assisted Steam Distillation Extraction

2013 ◽  
Vol 634-638 ◽  
pp. 1049-1053
Author(s):  
Hui Lin Cao ◽  
Shuang Ran Liang ◽  
Yang Tian ◽  
Zhi Ling Chen ◽  
Jian Ping Chao
Keyword(s):  
Extraction Method ◽  
Steam Distillation ◽  
Extraction Efficiency ◽  
Extraction Yield ◽  
Volatile Oils ◽  
Microwave Assisted ◽  
Steam Extraction ◽  
Steam Distillation Extraction ◽  
Optimum Extraction ◽  
Modern Technologies

Microwave-assisted steam extraction system combines the advantages of both conventional and modern technologies. MAE is probably going to be the leading technology in essential oil producing industry. In our research, one-factor and uniform experimental designs are used to determine the optimum extraction conditions, and the results are as follows: the extraction yield is measured as 2.30% with 3h of reflux time, when degree of pulverization is 90, immersing time is 3h, yield of solid to liquid equals 12: 1 ml/g. The chemicals in the production were examined by GC-MS. More than 40 kinds of chemicals were detected, which is consistent with that of the traditional steam extraction method. However, the extraction efficiency is dramatically increased when the steam extraction is assisted with microwave heating, and it is up to 3.8 times.

scholarly journals Optimization of DHEA Extraction from Sweet Potato Pomace by Ultrasonic-Microwave Synergistic Employing Response Surface Methodology

2019 ◽  
Vol 102 (2) ◽  
pp. 680-682
Author(s):  
Junjian Ran ◽  
Xinhong Liang ◽  
Hanmei Du ◽  
Junliang Sun
Keyword(s):  
Response Surface Methodology ◽  
Response Surface ◽  
Sweet Potato ◽  
Extraction Method ◽  
Extraction Efficiency ◽  
Extraction Yield ◽  
Extraction Temperature ◽  
Liquid Ratio ◽  
Solid Liquid ◽  
Optimum Extraction

Abstract Background: A lot of sweet potato residues (SPR) were discarded and wasted. Objective: To make full use of the SPR. Methods: Ultrasonic microwave synergistic (UMS) extraction method was used to extractdehydroepiandrosterone (DHEA) in SPR. The extraction conditions were optimized by response surface methodology based on single factors. Results: The optimum extraction conditions were 1:25 (solid–liquid ratio), 300 W (microwave power), 30 min (extraction time), and 30°C (extraction temperature). The extraction yield of DHEA from SPR reached 117.25 μg/100 g. Conclusions: The advantage of UMS extractiontechnology is to make full use of the synergistic effect of ultrasound and microwave to improve extraction efficiency. Highlights: The technology provides an effective way to improve the DHEA extraction yield from the SPR in industrial production.

Study on Steam Extraction Technology Assisted by Microwave of Anise Star Oil from the Fruit of Illicium verum Hook. f.

2011 ◽  
Vol 201-203 ◽  
pp. 2935-2938
Author(s):  
Guo En Yang ◽  
Gui Wu Wang ◽  
Zhi Ping Wu ◽  
Xiang Zhou Li
Keyword(s):  
Extraction Method ◽  
Steam Distillation ◽  
Influencing Factor ◽  
Extraction Process ◽  
Average Yield ◽  
Liquid Ratio ◽  
Extraction Technology ◽  
Steam Extraction ◽  
Illicium Verum ◽  
Solid Liquid

Evaluated with the yield of anise star oil, steam extraction method assisted by microwave is studied for the extraction of anise star oil from Illicium verum Hook. f. in contrast with the traditional steam distillation (SD) method in this paper. The new optimal steam extraction technology assisted by microwave of anise star oil is obtained as: extracting time 80 minutes, solid-liquid ratio(g/mL) 1:7, size of material 80~100 mesh and extracting temperature 80°C. Average yield of anise star oil is up to 11.6% (g/g) under the above technology. Size of material is the most important influencing factor in the extraction process. The optimal traditional steam distillation technology is: extracting time 120 minutes, solid-liquid ratio(g/mL) 1:6, size of material 80~100 mesh and extracting temperature 100°C , the average yield of anise star oil is only 9.81% (g/g). The steam extraction technology assisted by microwave has advantages in both the technological conditions and the yield of anise star oil than the traditional steam distillation technology.

scholarly journals Enhancement of Solasodine Extracted from Fruits of Solanum nigrum L. by Microwave-Assisted Aqueous Two-Phase Extraction and Analysis by High-Performance Liquid Chromatography

Molecules ◽  
2019 ◽  
Vol 24 (12) ◽  
pp. 2294 ◽  
Author(s):  
Li Lin ◽  
Wen Yang ◽  
Xing Wei ◽  
Yi Wang ◽  
Li Zhang ◽  
...  
Keyword(s):  
Extraction Method ◽  
High Performance ◽  
Extraction Yield ◽  
Solanum Nigrum ◽  
Two Phase ◽  
Solid Ratio ◽  
Microwave Assisted ◽  
Assisted Extraction ◽  
Solanum Nigrum L ◽  
Aqueous Two Phase Extraction

Background: Solasodine is a major bioactive ingredient in Solanum nigrum L. that has strong pharmacological characteristics. Therefore, the development of a simple and effective extraction method for obtaining solasodine is highly important. This study aims to provide a rapid and effective method for extracting solasodine from Solanum nigrum L. by microwave-assisted aqueous two-phase extraction (MAATPE). Methods: First, the high-performance liquid chromatography (HPLC) conditions were established for the detection of solasodine. Then, the aqueous two-phase system (ATPS) compositions were examined. On the basis of the results of single-factor experiments, for a better yield, response surface methodology (RSM) was used to optimize influential factors including the extraction temperature, extraction time and liquid-to-solid ratio. Results: The maximum extraction yield of 7.11 ± 0.08 mg/g was obtained at 44 °C, an extraction time of 15 min, and a liquid-to-solid ratio of 42:1 mL/g in the ATPS consisting of EtOH solvent, (NH4)2SO4, and water (28:16:56, w/w/w). The extraction yield of the alkaloid obtained using this method was markedly higher than those of microwave-assisted extraction (MAE) and ultrasonic-assisted extraction (UAE). Conclusions: In this work, solasodine was extracted by MAATPE for the first time and a high yield was obtained. MAATPE is a simple, rapid, and green technique for extraction from medical plants. Thus, the present study will enable the development of a feasible extraction method of active alkaloids from Solanum nigrum L.

scholarly journals Extraction of acyclovir from pharmaceutical creams for HPLC assay. Optimization and validation of pretreatment protocols

2008 ◽  
Vol 6 (2) ◽  
pp. 140-144 ◽  
Author(s):  
Paraskevas Tzanavaras ◽  
Constantinos Zacharis
Keyword(s):  
Extraction Efficiency ◽  
Monolithic Column ◽  
Extraction Yield ◽  
Extraction Kinetics ◽  
Time Intervals ◽  
Rapid Separation ◽  
Assay Optimization ◽  
Magnetic Stirring ◽  
Pharmaceutical Creams ◽  
Optimum Extraction

AbstractThree simple protocols for the extraction of acyclovir from its pharmaceutical creams based on ultrasonication, ultrasonication with heating and magnetic stirring were evaluated and compared. Extraction kinetics were studied at different time intervals (5, 10, 15, 30 and 60 min) and the extraction efficiency was determined by HPLC. The effect of concentration of aqueous NaOH as the extraction medium and the stirring speed were also studied and optimized. Best results were obtained with 50 mL of 0.01 mol L−1 aqueous NaOH with magnetic stirring speed of 500 r.p.m. HPLC analysis involved rapid separation of acyclovir from the cream matrix using a 100 × 4.6 mm i.d. monolithic column and UV detection at 254 nm. Magnetic stirring produced the best results in terms of extraction efficiency with an average extraction yield of 100.8%, n = 16 at an optimum extraction time of 15 min. The selected protocol was validated for within and day-to-day precision and ruggedness.

A novel on-line ultrasonic extraction system for determination of the optimal ultrasonic frequency for plant material

2015 ◽  
Vol 7 (1) ◽  
pp. 336-341 ◽  
Author(s):  
Jianqing Liao ◽  
Baida Qu ◽  
Baoguo Xu
Keyword(s):  
Extraction Method ◽  
Plant Material ◽  
Extraction Yield ◽  
Ultrasonic Extraction ◽  
Extraction System ◽  
Ultrasonic Frequency ◽  
The Novel ◽  
On Line ◽  
Optimum Extraction

The novel extraction system was developed to efficiently extract plant material by determining optimum extraction frequency via two steps. Extraction experiments show that this extraction system gave a higher extraction yield compared to existing ultrasonic extraction method.

scholarly journals OPTIMIZATION OF PHENOLIC COMPOUNDS EXTRACTION FROM PURPLE BASIL LEAF BY CONVENTIONAL AND MICROWAVE ASSISTED EXTRACTION METHOD

2021 ◽  
Vol 51 (4) ◽  
pp. 285-292
Author(s):  
Basak ebru Ozcan ◽  
Osman Sagdic ◽  
Salih Karasu ◽  
Kubra Ozkan ◽  
Alican Akcicek
Keyword(s):  
Extraction Methods ◽  
Extraction Yield ◽  
Total Phenolic ◽  
Microwave Assisted Extraction ◽  
Total Anthocyanin ◽  
Microwave Assisted ◽  
Assisted Extraction ◽  
Conventional Solvent Extraction ◽  
Phenolic Extraction ◽  
Optimum Extraction

The present study aimed to determine the optimum extraction conditions of conventional solvent extraction (CSE) and microwave-assisted extraction (MAE) techniques to obtain maximum total phenolic (TPC), total flavonoid (TFC), total anthocyanin (TAC) and antioxidant capacity (AA). Response surface methodology (RSM) and central composite design (CCD) were used to determine optimum points of CSE and MAE. Both two extraction methods, all parameters significantly affected TPC, AA, TFC and TAC (p<0.05). MAE showed higher bioactive compounds yield than that of CSE.  Optimum point for CSE and MAE was found to be 60°C and 30 min and 591.83 W and 2.98 min respectively. TPC, AA, TFC and TAC were obtained as 33.81mg/g, 160.27 mg/g, 11.89 mg/g and 331.01 mg/kg for CSE and 62.99 mg/g, 214.62 mg/g, 21.80 mg/g and 3462.93 mg/kg for MAE respectively. This study recommended that the MAE should be used for the extraction of PBL to increase phenolic extraction yield.

Effect of Temperature, Moisture Content, Particle Size and Roasting on Shea Butter Extraction Efficiency

2010 ◽  
Vol 6 (2) ◽  
Author(s):  
George Y. Obeng ◽  
Michael K Adjaloo ◽  
Peter Donkor
Keyword(s):  
Particle Size ◽  
Moisture Content ◽  
Extraction Method ◽  
Extraction Efficiency ◽  
Low Pressure ◽  
Oil Extraction ◽  
Screw Press ◽  
Shea Butter ◽  
Extraction Temperature ◽  
Optimum Extraction

The purpose of this study is to establish optimum extraction temperature, moisture content, particle size and the effect of roasting of shea kernels on extraction efficiency for optimum shea butter yield using low pressure (45kg/cm2) manual screw press. Extraction of shea butter is a major income generating activity in Ghana, particularly in the Northern Regions. It is estimated that about 80% of the shea butter produced in Ghana is processed by women using traditional aqueous extraction method. Commercial extraction using continuous screw press accounts for about 20% of production. Oil extraction rates for the traditional aqueous extraction method are relatively low. The traditional aqueous method involves roasting, milling, creaming and boiling, and relies on very low pressure, high moisture of 65-68% and temperatures of 100-140°C. In this study Intermediate Moisture Content (IMC) method was employed. The IMC method involves the use of a low pressure manual screw press to extract butter from shea kernels. The study established an optimum extraction temperature of 60°C and moisture content of 12% at which butter extraction efficiency was between 65.9% and 68.5%. The results revealed that oil extraction efficiency depends on the fineness of paste to be processed and that roasted kernels do not give higher butter yield than unroasted kernels. This is against the traditional belief that high shea butter yield can only be achieved when the kernels are roasted.

Optimization of Microwave-Assisted Extraction of Polysaccharides from Panax japlcus Var

2013 ◽  
Vol 774-776 ◽  
pp. 919-922
Author(s):  
Xiao Song ◽  
Peng Zhao
Keyword(s):  
Microwave Power ◽  
Extraction Yield ◽  
Operating Conditions ◽  
Raw Material ◽  
Extraction Time ◽  
Microwave Assisted Extraction ◽  
Box Behnken Design ◽  
Microwave Assisted ◽  
Assisted Extraction ◽  
Optimum Extraction

Polysaccharide fromPanax japlcus var(PJVPs) was extracted with microwave-assisted (MAE). The effects of operating conditions, such as extraction time, ratio of water to raw material , and microwave power, on the extraction yield of PJVPs were studied through a Box-Behnken design (BBD). The optimum extraction conditions were as follows: extraction time 9.14 min, power 728.5 W and ratio of water to raw material 27.57ml/g. The yield of polysaccharide was 14.02 % based on the above mentioned conditions.

scholarly journals Microwave-Assisted Extraction of Essential Oil from Eucalyptus: Study of the Effects of Operating Conditions

2006 ◽  
Vol 3 (1) ◽  
pp. 31 ◽  
Author(s):  
A.A. Saoud ◽  
R.M. Yunus ◽  
R.A. Aziz
Keyword(s):  
Essential Oil ◽  
Steam Distillation ◽  
Extraction Efficiency ◽  
Raw Materials ◽  
Extraction Process ◽  
Operating Conditions ◽  
Microwave Exposure ◽  
Microwave Assisted ◽  
Assisted Extraction ◽  
Eucalyptus Globules

Classical extraction of essential oil such as Soxhlet and steam distillation is still a formidable and time-solvent consuming. Microwave assisted process (MAP) is used to accelerate the extraction process of target compounds. It can be used for the extraction of compounds from various plants and animal tissues, or the extraction of undesirable components from raw materials. The investigation of microwave extraction of eucalyptus (globules ) essential oil using ethanol as solvent was carried out. The influence of material (eucalyptus)/solvent (ethanol) ratio, required doses of microwave, and time of microwave exposure on extraction efficiency, was studied. 

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