Optimization of Anthocyanins Extracts from Roselle (Hibiscus sabdarifa) Petals Using Ultrasonic-Assisted Extraction Method

2021 ◽  
pp. 295-309
Author(s):  
Syafiqah Redzuan ◽  
Chai Yee Ho ◽  
Zuhaili Idham ◽  
Suzana Yusuf ◽  
Nicky Rahman Putra ◽  
...  
Keyword(s):  
Extraction Method ◽  
Assisted Extraction ◽  
Ultrasonic Assisted ◽  
Ultrasonic Assisted Extraction

scholarly journals Penetapan Kadar Fenolik dan Flavonoid Hasil Ultrasonic Assisted Extraction Daun Binahong (Anredera cordifolia [Ten] Steenis)

2020 ◽  
Vol 11 (1) ◽  
pp. 16-23
Author(s):  
Landyyun Rahmawan Sjahid ◽  
Amelia Aqshari ◽  
Sediarso Sediarso
Keyword(s):  
Phenolic Compounds ◽  
Pharmacological Activity ◽  
Extraction Method ◽  
Ethanolic Extract ◽  
Assisted Extraction ◽  
Ultrasonic Assisted ◽  
Ultrasonic Assisted Extraction ◽  
Conventional Extraction ◽  
Phenolic And Flavonoid ◽  
Phenolic And Flavonoid Compounds

Anredera cordifolia [Ten] Steenis has been proven to have pharmacological activity that is thought to be influenced by the presence of phenolic compounds and flavonoids. However, both compounds are found in small concentrations through conventional extraction (maceration, decoction, soxhlet, and reflux). This study aims to prove that the ultrasonic assisted extraction method can obtain higher concentrations of phenolic and flavonoid compounds. Dried binahong leaves were extracted using ultrasonic assisted extraction with 70% ethanol. Phenolic levels were determined using Folin-Ciocalteu, while flavonoid levels were determined using the colorimetric aluminum method. The results showed binahong leaves ethanolic extract had phenolic levels of 10.16 % GAE and flavonoid levels of 10.58 % QE. These results are much higher than the results obtained using conventional extraction so that ultrasonic assisted extraction can be recommended to maximize the extraction of phenolic and flavonoid levels from the leaves of Binahong (Anredera cordifolia [Ten] Steenis). 

An ultrasonic assisted extraction method to release heavy metals from untreated sewage sludge samples

Chemosphere ◽  
2006 ◽  
Vol 63 (3) ◽  
pp. 411-420 ◽  
Author(s):  
T.G. Kazi ◽  
M.K. Jamali ◽  
A. Siddiqui ◽  
G.H. Kazi ◽  
M.B. Arain ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Sewage Sludge ◽  
Extraction Method ◽  
Untreated Sewage ◽  
Assisted Extraction ◽  
Ultrasonic Assisted ◽  
Ultrasonic Assisted Extraction

scholarly journals Extraction Optimization of 5,7-Dihydroxy-6,8,4′-trimethoxyflavonol, a Bioactive Flavonoid from Rubus rosifolius (Rosaceae) Leaves

2019 ◽  
Vol 14 (1) ◽  
pp. 1934578X1901400
Author(s):  
Janieire Lorraine da Rocha Pittarello ◽  
Marcel Petreanu ◽  
Valdir Cechinel Filho ◽  
Clóvis Antonio Rodrigues ◽  
Luiz Carlos Klein-Júnior ◽  
...  
Keyword(s):  
Extraction Method ◽  
High Performance ◽  
Solvent Ratio ◽  
Flavonoid Content ◽  
Box Behnken Design ◽  
Microwave Assisted ◽  
Assisted Extraction ◽  
Ultrasonic Assisted ◽  
Ultrasonic Assisted Extraction ◽  
Addition Level

Recently, it has been demonstrated that a rare flavonoid, 5,7-dihydroxy-6,8,4′-trimethoxyflavonol (1), isolated from the leaves of Rubus rosifolius showed significant antiproliferative activity against different cancer cell lines and had a diuretic effect. This study aimed to determine the best extraction method evaluating dynamic maceration extraction (DME), ultrasonic assisted extraction (UAE), and microwave assisted extraction (MAE). In addition, level optimization for different factors was focused using Design of Experiments. The flavonoid content was estimated by high performance liquid chromatography (HPLC). The results indicated that UAE provided the highest content with the shortest extraction time. For optimization, response surface methodology (RSM) was used, applying a Box-Behnken Design (BBD) with three factors at three levels. It was possible to observe that the flavonoid content significantly increased with the increase of temperature (max. 70°C). The time had little influence on the extraction and, for this reason, was set at 25 min. With regard to the drug/solvent ratio, it was observed that this had an impact on yield with a ratio of 3.5%. A model was built and a determination coefficient of 0.98 was obtained. After validation, an optimized method was developed, able to extract 1 with a lower time, lower solvent consumption, and affording higher contents.

scholarly journals Ultrasonic-Assisted Extraction and Antioxidant Activities of the Polysaccharides Extracted from Soybean Curd Residue Fermented by Flammulina velutipes

2015 ◽  
Vol 8 (1) ◽  
pp. 61 ◽  
Author(s):  
Jian Ma ◽  
Hongyi Sun ◽  
Zhenya Zhang
Keyword(s):  
Extraction Method ◽  
Radical Scavenging ◽  
Water Soluble ◽  
Hot Water ◽  
Flammulina Velutipes ◽  
Soybean Curd ◽  
Assisted Extraction ◽  
Ultrasonic Assisted ◽  
Ultrasonic Assisted Extraction ◽  
Soybean Curd Residue

<p class="1Body">The water-soluble polysaccharides content of soybean curd residue fermented by <em>Flammulina velutipes</em> was about 7 times higher than unfermented one and more than 4 times higher than <em>Flammulina velutipes</em> fruiting body. The optimized ultrasonic-assisted extraction method (80 °C, 20 min, 80 W and solid-liquid ratio of 1 g/30 mL) showed a water-soluble polysaccharides extraction yield of 7.88% which was higher than that of hot-water extraction method (6.11%). Moreover, the crude polysaccharides were purified and the main components showed strong activities on DPPH radical scavenging (IC50 0.21 mg/mL), ABTS radical scavenging (IC50 0.42 mg/mL), hydroxyl radical scavenging (IC50 0.28 mg/mL) and SOD-like activity (IC50 0.88 mg/mL). The results indicated that the fermentation method could be used as a new approach for bio-active polysaccharides production and a new method for reusing the food industrial waste. The ultrasonic-assisted extraction method could be considered as a more efficient method in polysaccharides extraction process. Furthermore, the fermented soybean curd residue could be expected as a new source of antioxidant with the further research value.</p>

scholarly journals Quantitative Analysis of Phenolic Acids and Flavonoids in Cuscuta chinensis Lam. by Synchronous Ultrasonic-Assisted Extraction with Response Surface Methodology

2018 ◽  
Vol 2018 ◽  
pp. 1-10
Author(s):  
Kun-ze Du ◽  
Jin Li ◽  
Xinrong Guo ◽  
Yuhong Li ◽  
Yan-xu Chang
Keyword(s):  
Quality Control ◽  
Response Surface Methodology ◽  
Response Surface ◽  
Phenolic Acids ◽  
Extraction Method ◽  
Uniform Design ◽  
Assisted Extraction ◽  
Ultrasonic Assisted ◽  
Ultrasonic Assisted Extraction ◽  
Cuscuta Chinensis

An effective ultrasonic-assisted extraction method for the separation of phenolic acids and flavonoids in Cuscuta chinensis Lam. was conducted by combining uniform design (UD) coupled with response surface methodology (RSM) and orthogonal design (OD) experiment. A sensitive and selective high-performance liquid chromatography-electrospray ionization tandem triple quadrupole mass spectrometry (HPLC-ESI-MS/MS) method was applied to quantify the sixteen active ingredients (chlorogenic acid, cryptochlorogenic acid, neochlorogenic acid, isochlorogenic acid A, isochlorogenic acid B, isochlorogenic acid C, caffeic acid, hyperin, isoquercitrin, quercetin, campherol, p-coumaric acid, isorhamnetin, rutin, astragalin, and apigenin). The extraction method was optimized with respect to concentration of extraction solvent, extraction time, and ratio of liquid to solid as a consequence of getting a high sensitive and feasible method for simultaneous determination of contents of multiple components and evaluation of quality control of Cuscuta chinensis Lam. from different origins. It was also considered useful and valuable in the further study for quality control of Cuscuta chinensis Lam.

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