scholarly journals Comparison of microwave and conventional extraction methods for natural dyes in wood waste of mahogany (Swietenia mahagoni)

2020 ◽  
Vol 18 (4) ◽  
pp. 618-623
Author(s):  
Selfina Gala ◽  
Sumarno Sumarno ◽  
Mahfud Mahfud
Keyword(s):  
Microwave Power ◽  
Soxhlet Extraction ◽  
Extraction Process ◽  
Extraction Methods ◽  
Heating Time ◽  
Natural Dyes ◽  
Extraction Time ◽  
Solvent Ratio ◽  
Conventional Extraction ◽  
Time Required

Natural dyes from mahogany are usually obtained by conventional extraction. This extraction process requires a large solvent, a long duration of the process so that the energy requirements are also higher. Therefore, the use of "green techniques" to extract natural dyes with a minimum of energy and solvent should be considered. One extraction method that has been developed is the microwave-assisted extraction (MAE) method. In this work, the effects of microwave power, material to solvent ratio, and the heating time on the extraction results and the pigment components of the extract were examined. A comparison of the time required for reflux extraction and Soxhlet was also made. In microwave extraction, the highest yield was obtained at optimum extraction conditions such as microwave power of 600 W, the ratio of material to solvent of 0.02 g/mL, extraction time of 30 min. While for reflux and Soxhlet extraction, the extraction time needed to obtain optimum yield was 120 min and 720 min, respectively. Identification of compound components by the phytochemical test. Descriptions of the effects of microwave and conventional extraction are shown by damage to the surface structure of solid materials using Scanning Electron Microscopy (SEM).

Research on Solvent Extraction Process of Coal for Direct Carbon Fuel Cells

2012 ◽  
Vol 455-456 ◽  
pp. 862-866 ◽  
Author(s):  
Wen Yan Bi ◽  
Hong Yang ◽  
Juan Miao ◽  
Yu Gui Zhang ◽  
Jian Feng Wan
Keyword(s):  
Fuel Cells ◽  
Soxhlet Extraction ◽  
Extraction Process ◽  
Extraction Methods ◽  
Extraction Rate ◽  
Extraction Time ◽  
Microwave Extraction ◽  
Rate Condition ◽  
Direct Carbon Fuel Cells ◽  
Time Required

Two different extraction methods, microwave extraction and traditional soxhlet extraction, were used to evaluate the optimal extraction process of coal for direct carbon fuel cells through enrichment efficiency of the organic components and extraction time required under the same extraction rate. The experimental results showed that the extraction rate of microwave extraction was 9.7368% when adopted tectonic coal of 8th coal mine as sample, selected 80mL pyridine as solvent, set 95W as microwave power and 3min as extraction time. Under the same extraction rate condition, soxhlet extraction time is 35.73h, and the extraction efficiency of the microwave extraction was 714.6 times that of the soxhlet extraction. The microwave extraction was a simplify and promising working for coal, which was used as raw fuel for direct carbon fuel cells, with fast extraction speed, large sample capacity, energy saving and environmental friendly.

Study on Extraction Efficiency of Coal with Different Methods

2013 ◽  
Vol 699 ◽  
pp. 841-845
Author(s):  
Hong Yang ◽  
Wen Yan Bi ◽  
Yu Gui Zhang ◽  
Hou Xiang Chen ◽  
Hua Hu ◽  
...  
Keyword(s):  
Coal Mine ◽  
Bituminous Coal ◽  
Extraction Efficiency ◽  
Soxhlet Extraction ◽  
Extraction Methods ◽  
Extraction Time ◽  
Environmental Friendly ◽  
Tectonic Coal ◽  
Time Required ◽  
Fast Extraction

To raise the extraction efficiency of the organic components of coal, samples were selected from tectonic coal and original bituminous coal in symbiotic seam of coal in Pingdingshan 8th coal mine and 5th coal mine. For comparing the extraction time required under the same extraction rate, two different extraction methods, ultrasonic-microwave coordination extraction and traditional soxhlet extraction, was adopted. The experimental results showed that the extraction proportion of ultrasonic-microwave coordination extraction was 10.7911% when adopted tectonic coal of 8th coal mine as sample, selected 80mL pyridine as solvent, set 95W as microwave power and 3min as extraction time. Under the condition of same extraction proportion, soxhlet extraction time is 39.43h.So the extraction efficiency of the ultrasonic-microwave coordination extraction was as 788.6 times as soxhlet extraction. The ultrasonic-microwave coordination extraction was a simplify method with fast extraction speed, large volume sample, energy saving and environmental friendly.

scholarly journals THE EXTRACTION OF NATURAL DYES FROM JACKFRUIT WOOD WASTE (Artocarpus Heterophyllus Lamk) WITH WATER SOLVENT BY USING THE MICROWAVE METHOD

2018 ◽  
Vol 7 (2) ◽  
pp. 128-135
Author(s):  
Selfina Gala ◽  
Mahfud Mahfud ◽  
Sumarno Sumarno ◽  
Lailatul Qadariyah
Keyword(s):  
Structural Damage ◽  
Extraction Process ◽  
Natural Dyes ◽  
Wood Waste ◽  
Extraction Time ◽  
Process Technology ◽  
Water Solvent ◽  
Long Time ◽  
Time Required ◽  
Optimum Extraction

Currently, exploration of natural dyes is increasingly being activated and developed, especially to find natural sources of dyes from different plant species and also to develop natural dyestuff extraction process technology for textile applications. During this natural dye extraction process is done by conventional methods that require a long time and a large amount of solvent. Therefore, it is a necessary alternative to the use of "green techniques" are economical in its use. In this research, extraction of Jackfruit wood waste with the microwave by studying the extraction time required to produce the optimum yield and comparing with the conventional method (heat-reflux extraction). Both of these methods use water solvent. On the microwave-assisted extraction, the optimum extraction time at 30 minutes with the acquisition yield of 3.14% (microwave power 400 watt, the ratio of material to solvent 0.02 g/mL). whereas extraction with heat-reflux method showed the optimum extraction time of 180 minutes with a yield of 3.50%. Identification of groups of pigments contained in the Jackfruit wood waste is known categories tannins, flavonoids, and quinones. Fourier Transform Infrared Spectroscopy was used to identify the major chemical groups in the extracted dye. Description of the effects of extraction with microwave and conventional, structural damage shown in a solid surface material using by Scanning Electron Microscopy. Further, to test the application on the fabric dyeing.

Extraction and Quantification of Eugenol from Clove Buds Using HPLC

2020 ◽  
Vol 7 (1) ◽  
pp. 17-23
Author(s):  
Khadiza Fitri Shafira ◽  
Abul Kalam Azad ◽  
Zubair Khalid Labu ◽  
Abul Bashar Mohammed Helal Uddin
Keyword(s):  
Processing Time ◽  
Soxhlet Extraction ◽  
Extraction Methods ◽  
Past Study ◽  
Solvent Ratio ◽  
Clove Oil ◽  
Microwave Assisted ◽  
Assisted Extraction ◽  
Significant Difference ◽  
Clove Essential Oil

Background: Eugenol is the main constituent of clove essential oil. Past studies have found that clove oil has diverse uses in the pharmaceutical field due to its antioxidant, antibacterial and anesthetic properties. Objective: This work compares the performance of different extraction methods and factors and identifies the effect of the treatments on oil yields and eugenol content. Materials and Methods: Maceration, Hydro distillation, microwave-assisted extraction (MAE), and Soxhlet were performed. The best technique was identified according to yield and content. Further studies were conducted to examine the effects of different factors, such as solvent types (ethanol and methanol) and sample-to-solvent ratio (1:10 and 1:15). HPLC UV-Vis was utilized in the analysis of eugenol concentration. Results and Discussion: Soxhlet extraction provided the highest yield (39.98%) and eugenol content (15.83%), compared to other methods. The results observed from several Soxhlet extraction factors showed that there is no significant difference between the different factors. In the meantime, methanol 1:15 provided the greatest amount of yields (57.83%) and eugenol content (22.21%). In this regard, the higher ratio resulted in higher eugenol content. Conclusion: The results obtained are less comparable because the processing time, the working solvent, and the separation technique were carried out differently for each method. In the meantime, as there is no past study that compared the selected methods and factors, this study’s findings will contribute substantially to fill the gap in this field.

scholarly journals Phycocyanin content and nutritional profile of Arthrospira platensis from Mexico: efficient extraction process and stability evaluation of phycocyanin

BMC Chemistry ◽  
2021 ◽  
Vol 15 (1) ◽  
Author(s):  
Sanghamitra Khandual ◽  
Edgar Omar Lopez Sanchez ◽  
Hugo Espinosa Andrews ◽  
Jose Daniel Padilla de la Rosa
Keyword(s):  
Storage Temperature ◽  
Extraction Process ◽  
Arthrospira Platensis ◽  
Extraction Methods ◽  
Precipitation Method ◽  
Partial Purification ◽  
Natural Food ◽  
Solvent Ratio ◽  
C Storage ◽  
Dry Biomass

AbstractPhycocyanin is a blue natural food colorant with multiple health benefits. Here we propose an efficient phycocyanin extraction method from Arthrospira platensis from Mexico. Three extraction methods were applied to optimize the extraction process, using water and buffer as solvents, with three pH values at two agitation times. The highest phycocyanin, 54.65 mg/g, was extracted from dry biomass with water as a solvent using an ultrasonication bar. The optimum condition of extraction was determined to be 1:50 biomass/solvent ratio for dry biomass, with the freeze/thaw method for 20 min repeated twice, and then agitated at 120 rpm for 24 h. The phycocyanin content was 48.88 mg/g biomass, with a purity of 0.47. For scalable phycocyanin productivity, the sonication method is recommended as there is no statistical difference. The phycocyanin stability was best at − 20 °C storage temperature at pH 7 for 35 days. Partial purification with ammonium sulfate was found to be suitable as a fractional precipitation method, first at 0–20% and then 20–65%, to get purity nearly 1. Total protein was found to be 55.52%, and total amino acids after phycocyanin extraction was 33%. The maximum phycocyanin yield using water as a solvent was the most interesting result regardless of the method used for extraction.

Optimization of Microwave Extraction Process by Response Surface Methodology of Flavonoids from Tussilago farfara L.

2013 ◽  
Vol 763 ◽  
pp. 246-249
Author(s):  
Xiao Song ◽  
Peng Zhao
Keyword(s):  
Response Surface Methodology ◽  
Response Surface ◽  
Microwave Power ◽  
Extraction Process ◽  
Raw Material ◽  
Extraction Time ◽  
Microwave Extraction ◽  
Water Solvent ◽  
Tussilago Farfara ◽  
Optimum Extraction

Flavonoids from Tussilago farfara L. was extracted with the assistance of microwave.Box-Behnken design (BBD) was employed to optimize extraction time; microwave power and ratio of water to raw material to obtain a high flavonoids yield.The optimum extraction conditions were as follows: 73.3% ethanol-water solvent, time 16.25 min and ratio of solvent to raw material 36.2ml/g.The yield of flavonoids was 11.37% based on the above mentioned conditions.

Research on Biochemical Materials with Optimization of Microwave Extraction Process by Response Surface Methodology of Flavonoids from Platycarya strobi lacea sieb.et zucc.

2014 ◽  
Vol 1014 ◽  
pp. 61-64
Author(s):  
Xiao Song ◽  
Peng Zhao ◽  
Qing Hua Meng ◽  
Zhi Shu Tang ◽  
Chang Li Wang
Keyword(s):  
Response Surface Methodology ◽  
Response Surface ◽  
Microwave Power ◽  
Extraction Process ◽  
Raw Material ◽  
Extraction Time ◽  
Microwave Extraction ◽  
Water Solvent ◽  
Optimum Extraction

Flavonoids from Platycarya Strobi lacea Sieb.et Zucc. was extracted with the assistance of microwave.Box-Behnken design (BBD) was employed to optimize extraction time; microwave power and ratio of solvent to raw material to obtain a high flavonoids yield. The optimum extraction conditions were as follows: 65.32% ethanol-water solvent, time 3.96 min and ratio of solvent to raw material 20.8 ml/g.The yield of flavonoids was 3.41% based on the above mentioned conditions.

scholarly journals EKSTRAKSI TANIN DARI KULIT KAYU AKASIA DENGAN MENGGUNAKAN MICROWAVE: PENGARUH DAYA MICROWAVE, WAKTU EKSTRAKSI DAN JENIS PELARUT

2017 ◽  
Vol 6 (3) ◽  
pp. 52-57
Author(s):  
Iriany ◽  
Florentina Pandiangan ◽  
Christina Eka P
Keyword(s):  
Atomic Absorption ◽  
Adsorption Capacity ◽  
Microwave Power ◽  
Polar Solvent ◽  
Extraction Time ◽  
Solvent Ratio ◽  
Microwave Assisted Extraction ◽  
Power Extraction ◽  
Microwave Assisted ◽  
Assisted Extraction

Tannin is one of complex polyphenol compound which soluble in polar solvent. Tannin could be extracted from acacia bark. This study aims to examine microwave-assisted extraction of tannins under influence of microwave power, extraction time, and solvent and its application to adsorb Cd and Cu. Tannin was extracted from acacia bark with feed-to-solvent ratio (1:20 g/ml). Power of microwave was adjusted 100 W, 180 W, 300 W, 450 W, and 600 W for 1 minute, 3 minutes and 5 minutes respectively using aquadest and ethanol as the solvent. The extracts were analyzed using UV-Vis spectrophotometer. Furthermore, the extract with the highest yield of tannins are used as the adsorbent. The concentration of Cd and cu were analyzed using Atomic Absorption Spectrophotometer. The result showed the highest yield of tannin 26.606 mg/g at 100 W and 3 minutes extraction time using ethanol as the solvent. The result showed that the adsorption capacity of adsorbent from tannin was 3.81 mg/g and 2.26 mg/g for Cd and Cu respectively.

scholarly journals Kinetic and Mass Transfer for the Extraction of Peanut Oil Using Soxhlet Extraction

2018 ◽  
Vol 3 (2) ◽  
pp. 75-87
Author(s):  
Faraliana binti Md Dan ◽  
◽  
Nazlina binti Zulbadli ◽  
Keyword(s):  
Mass Transfer ◽  
Optimum Condition ◽  
Rate Constant ◽  
Mass Transfer Rate ◽  
Effective Diffusivity ◽  
Soxhlet Extraction ◽  
Extraction Process ◽  
Peanut Oil ◽  
Solvent Ratio ◽  
Solid Ratio

This project focused on the extraction of peanut oil by using Soxhlet extraction. The main objective of this research is to determine the optimum condition for the Soxhlet extraction process in order to produce the highest extraction yields. Apart from that, this research is also to study about the mass transfer rate and kinetic to obtain the suitable diffusion coefficient and rate constant based on Fick’s law and kinetic studies. The experiments were conducted with few manipulated variables which are particle sizes, solvent to solid ratio and extraction contact time. The optimum condition for the peanut oil extraction was found at 0.6 mm of particle size, 15:1 solid to solvent ratio with an extraction time of 8 hours. Besides, the calculated effective diffusivity is 4.3258 x 10-14 m2/s. The extraction rate constant, k was found increase when the ratio of solvent to solid ratio increase due to higher amount of solvent facilitates the extraction process.

scholarly journals Effects of Extraction Methods and Conditions on Bioactive Compounds Extracted from Phaeodactylum tricornutum

2020 ◽  
Vol 67 (4) ◽  
pp. 1250-1261
Author(s):  
Saniye Akyıl ◽  
Işıl İlter ◽  
Mehmet Koç ◽  
Zeliha Demirel ◽  
Ayşegül Erdoğan ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Total Phenolic Content ◽  
Extraction Method ◽  
Phaeodactylum Tricornutum ◽  
Phenolic Content ◽  
Extraction Methods ◽  
Extraction Time ◽  
Total Phenolic ◽  
Solvent Ratio ◽  
Microwave Extraction

The effect of homogenization, ultrasound and microwave extraction methods and conditions on fucoxanthin content, total phenolic content and antioxidant activity of extracts obtained from Phaeodactylum tricornutum were investigated in this study. The solvent/biomass ratio was the most effective parameter on fucoxanthin content, total phenolic content and antioxidant activity. The maximum fucoxanthin content (5.60 ± 0.06 mg/g) and antioxidant activity (763.00 ± 15.88 EC50 μg/mL extract) were obtained with the homogenization extraction method whose optimum conditions were 1.93% biomass/solvent ratio, ~5200 rpm homogenization rate and 14.2 min extraction time. Although the ultrasonic extraction method has reached the approximately same level of fucoxanthin content (5.24 ± 0.07 mg/g)), TPC (67.68 ± 1.58 mg gallic acid/L) and antioxidant activity (619.90 ± 17.16 EC50 μg/mL extract) at an amplitude of 55.72%, a higher biomass/solvent ratio (2.72%) and a longer extraction time (17.37 min) have been required. The lowest fucoxanthin content, total phenolic content and antioxidant activity were determined for the microwave extraction method.

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