scholarly journals Ultrasonic microwave-assisted extraction of polyphenols, flavonoids, triterpenoids, and vitamin C from Clinacanthus nutans  

2017 ◽  
Vol 35 (No. 1) ◽  
pp. 89-94 ◽  
Author(s):  
Yu Qun ◽  
Li Chuan ◽  
Duan Zhenhua ◽  
Liu Bing ◽  
Duan Weiwen ◽  
...  
Keyword(s):  
Vitamin C ◽  
Microwave Assisted Extraction ◽  
Liquid Ratio ◽  
Efficient Technology ◽  
Bioactive Substances ◽  
Microwave Assisted ◽  
Assisted Extraction ◽  
Irradiation Power ◽  
Clinacanthus Nutans ◽  
Solid Liquid

Polyphenols, flavonoids, triterpenoids, and vitamin C from Clinacanthus nutans were extracted by an ultrasonic microwave-assisted method. The optimal extraction conditions were established in distilled water, solid-liquid ratio 1 : 55 g/ml, irradiation power 90 W, and extraction cycle with 75 seconds. Results revealed that the solid-liquid ratio exerted a significant effect on polyphenols, whereas the irradiation power played a key role in the extraction of flavonoids, triterpenoids, and vitamin C. Under these conditions the extraction yield of each component was: polyphenols 8.893, flavonoids 25 936, triterpenoids 16 789, and vitamin C 0.166 mg/g. These results showed that the ultrasonic microwave-assisted extraction was an efficient technology to extract bioactive substances from Clinacanthus nutans and Clinacanthus nutans could potentially be a source of natural antioxidants.

Optimization of Microwave-Assisted Extraction Conditions of Anthocyanins from Black Corn Hull Using Response Surface Methodology

2013 ◽  
Vol 864-867 ◽  
pp. 536-540 ◽  
Author(s):  
Yi Hua Jiang ◽  
Xin Long Jiang ◽  
Qing Hua Ma
Keyword(s):  
Response Surface Methodology ◽  
Ethanol Concentration ◽  
Microwave Assisted Extraction ◽  
Liquid Ratio ◽  
Power Extraction ◽  
Microwave Assisted ◽  
Assisted Extraction ◽  
Irradiation Power ◽  
Response Optimization ◽  
Solid Liquid

Abstract: Surface response optimization of microwave-assisted extraction (MAE) conditions of anthocyanins from black corn hull with the factors of ethanol concentration, microwave power, extraction time, solid/liquid ratio (g:mL) on the yield of anthocyanin were studied.The results showed that optimum extracting conditions of anthocyanin from black corn hull were as follows: adding 1:40.00 (m:v) of 79.67% alcohol (pH1.0) and extracting for 79.25 s,microwave irradiation power 560.00W.

scholarly journals Ekstraksi Polifenol Total dari Herba Suruhan (Peperomia pellucida [L.] KUNTH) Menggunakan Metode Citric Acid-Glucose Based Microwave Assisted Extraction

2019 ◽  
Vol 10 ◽  
pp. 76-80
Author(s):  
Duwi Meiliyani ◽  
Sabaniah ◽  
Islamudin Ahmad
Keyword(s):  
Citric Acid ◽  
Extraction Method ◽  
Microwave Assisted Extraction ◽  
Green Solvent ◽  
Liquid Ratio ◽  
Extraction Condition ◽  
Total Polyphenols ◽  
Microwave Assisted ◽  
Assisted Extraction ◽  
Solid Liquid

This study aims to determine the effect of citric acid-glucose based microwave assited extraction (MAE) method on total polyphenols content from (Peperomia pellucida [L.] Kunth) herbs. Dried samples were extracted using green solvent glucose citric acid with a ratio of 1: 1 g/g, 3: 1 g/g, and 5: 1 g/g, respectively, 30% microwave power for 5 minutes, and 1:5 g /mL solid-liquid ratio. Then the obtained extract solution was performed determination total polyphenols content using Folin-Ciocalteu reagent, and the absorbance was measured using a UV-Vis spectrophotometer at 791 nm. Based on the results, obtained total polyphenols content according to the extraction condition namely 214.405 mg GAE/g sample (3: 1 g /g solvent), 84.833 mg GAE /g sample (1: 1 g /g solvent) and 53,9451 mg GAE/g sample (5: 1 g /g solvent), respectively. This study is a preliminary data about the use of citric acid-glucose based microwave assisted extraction method on total polyphenols content from this plant quickly, easily and efficiently.

Study on Microwave-Assisted Extraction Technology of Total Flavonoid from Castor Leaves

2014 ◽  
Vol 1004-1005 ◽  
pp. 868-872
Author(s):  
Yi Hua Jiang ◽  
Xin Long Jiang ◽  
Cheng Gang Cai
Keyword(s):  
Ethanol Concentration ◽  
Orthogonal Experiment ◽  
Total Flavonoids ◽  
Microwave Assisted Extraction ◽  
Extraction Technology ◽  
Power Extraction ◽  
Microwave Assisted ◽  
Assisted Extraction ◽  
Irradiation Power ◽  
Solid Liquid

Orthogonal experiment optimization of microwave-assisted extraction (MAE) conditions of total flavonoids from castor leaves with the factors of ethanol concentration, microwave power, extraction time, solid/liquid ratio on the yield of total flavonoids were studied. The results showed that optimum extracting conditions of total flavonoids from castor leaves were as follows: adding 1:50 g·mL-1 of 40% alcohol and extracting for 3 min,microwave irradiation power 464W. Microwave extraction of total flavonoids from castor leaves is fast, energy saving and high extraction rate.

scholarly journals Optimization of Commercial Microwave Assisted-Extraction Conditions for Recovery of Phenolics from Lemon-Scented Tee Tree (Leptospermum petersonii) and Comparison with Other Extraction Techniques

Foods ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 50
Author(s):  
Md Saifullah ◽  
Taiwo Olusesan Akanbi ◽  
Rebecca McCullum ◽  
Quan Van Vuong
Keyword(s):  
Solvent Ratio ◽  
Microwave Assisted Extraction ◽  
Plant Materials ◽  
Soaking Time ◽  
Tea Tree ◽  
Microwave Assisted ◽  
Assisted Extraction ◽  
Irradiation Power ◽  
The Impact ◽  
Radiation Time

The lemon-scented tea tree (LSTT) is an Australian native herb and is a rich source of essential oil and phenolics. The ETHOS X extraction system is known as a commercial microwave-assisted extraction (MAE) system for extracting bioactive compounds from plant materials. This study investigated the influence of soaking time, radiation time, microwave power, and sample to solvent ratio on the extraction efficiency of polyphenols and antioxidant properties from lemon-scented tea tree leaves and optimized the extraction conditions using response surface methodology (RSM). The effectiveness of ETHOS X was further compared with ultrasound-assisted extraction (UAE) and shaking water bath (SWB) techniques. The results revealed that soaking time did not significantly affect the recovery of phenolics from the leaves (p > 0.05). Thus, soaking is not required for the ETHOS X extraction of polyphenols from LSTT leaves. RSM was successfully applied to explore the impact of ETHOS X extraction conditions and optimize the extraction conditions. Radiation time significantly affects the recovery yield of phenolics (p < 0.05) positively, whereas irradiation power and sample to solvent ratio adversely influenced the extraction yields of phenolics. The optimal ETHOS X extraction conditions were: radiation time of 60 min, irradiation power of 600 W, and sample to solvent ratio of 2 g/100 mL. Under these conditions, 119.21 ± 7.09 mg of phenolic, 85.31 ± 4.55 mg of flavonoids, and 137.51 ± 12.52 mg of proanthocyanidins can be extracted from a gram of dried LSTT leaves. In comparison with UAE and SWB, ETHOS X is not more effective for the extraction of phenolics than UAE and SWB. However, this technique can save half of the solvent volume compared to UAE and SWB techniques.

scholarly journals Optimizing Natural Deep Eutectic Solvent Citric Acid-Glucose Based Microwave-Assisted Extraction of Total Polyphenols Content from Eleutherine bulbosa (Mill.) Bulb

2021 ◽  
Vol 21 (4) ◽  
pp. 797
Author(s):  
Bohari Yusuf ◽  
Selvi Jumiatul Astati ◽  
Mirhansyah Ardana ◽  
Herman Herman ◽  
Arsyik Ibrahim ◽  
...  
Keyword(s):  
Citric Acid ◽  
Scale Up ◽  
Deep Eutectic Solvent ◽  
Microwave Assisted Extraction ◽  
Microwave Assisted ◽  
Condition Optimization ◽  
Assisted Extraction ◽  
Confirmation Test ◽  
Natural Deep Eutectic Solvent ◽  
Solid Liquid

Application of natural deep eutectic solvent (NADES) citric acid-glucose-based microwave-assisted extraction (MAE) method for total polyphenol content (TPC) enriches the use of Eleutherine bulbosa (Mill.) bulb more widely and commercially. Therefore, this study aims to optimize NADES citric acid-glucose-based MAE on the TPC from E. bulbosa bulbs using response surface methodology (RSM). In the present study, the dried sample of E. bulbosa bulb was extracted using the NADES based MAE. Determination of TPC was conducted using Folin-Ciocalteau reagent and standard gallic acid, then measured using a UV-Vis spectrophotometer at 761 nm. Extraction condition optimization of the NADES based MAE method was performed using RSM with Box Behnken Design (four-factors-three-levels and 29 runs) on Design Expert v12. Based on the results study, the optimum condition extraction on the TPC enrichment was obtained at the NADES ratio (citric acid: glucose) 1:1 g/g; solid-liquid ratio 1:8 g/mL; extraction time of 15 min; and 270 Watt microwave power. The confirmation test and scale-up (50 g samples) were obtained with a 61.63 ± 2.23 mg GA/g sample.

scholarly journals Microwave-assisted Extraction of Natural Dyes from Coleus atropurpureus Leaves: The Effect of Solvent

2018 ◽  
Vol 156 ◽  
pp. 06011 ◽  
Author(s):  
Selfina Gala ◽  
Sumarno Sumarno ◽  
Mahfud Mahfud
Keyword(s):  
Natural Dyes ◽  
Solvent Ratio ◽  
Microwave Assisted Extraction ◽  
Optimal Conditions ◽  
Microwave Assisted ◽  
Water Solvent ◽  
Assisted Extraction ◽  
Irradiation Power ◽  
Major Chemical ◽  
Chemical Groups

A microwave-assisted extraction system was used to extract natural dyes from Coleus atropurpureus leaves. The effects of water solvent of the temperature at 100°C and 80°C as well as ethanol solvent 96% were investigated. This is done at the various material to solvent ratio (0.001, 0.0025, 0.005 g/mL) and microwave power (264, 400, 600 watt). The optimal conditions of the extraction were obtained on a water solvent of the temperature at 100°C with material to solvent ratio 0.001 g/mL, irradiation power 400 watt, extraction time 10 min, material size 35-60 mesh, the optimum yield of 44.48%. Identification of groups of pigments contained in the Coleus atropurpureus leaves is known categories tannins and flavonoids. Fourier Transform Infrared Spectroscopy was used to identify the major chemical groups in the extracted dyes.

Extraction Technology and Determination of Total Flavonoid in Magnolia Liliiflora Petals

2014 ◽  
Vol 941-944 ◽  
pp. 1003-1007 ◽  
Author(s):  
Yi Hua Jiang ◽  
Xin Long Jiang ◽  
Cheng Gang Cai
Keyword(s):  
Ethanol Concentration ◽  
Orthogonal Experiment ◽  
Total Flavonoids ◽  
Liquid Ratio ◽  
Extraction Technology ◽  
Assisted Extraction ◽  
Irradiation Power ◽  
Maximal Yield ◽  
Solid Liquid

Orthogonal experiment optimization of microwave-assisted extraction (MAE) conditions of total flavonoids from Magnolia liliflora petals with the factors of ethanol concentration, extraction time,microwave power,solid/liquid ratio on the yield of total flavonoids were studied. The results showed that optimum extracting conditions of total flavonoids from Magnolia liliflora were as follows: adding 1:10 g·mL-1 of 40% alcohol and extracting for 5 min,microwave irradiation power 464W, under the optimal conditions, the maximal yield of flavonoids was of 2.08%.

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