Optimization of Microwave-Assisted Extracting of Proanthocyanidins from Purple Cabbage and Evaluation of Antioxidant Activity In Vitro

2012 ◽  
Vol 490-495 ◽  
pp. 3500-3504 ◽  
Author(s):  
Song Lin Li ◽  
Xiao Ming Chen ◽  
Jing Lin
Keyword(s):  
Microwave Power ◽  
Extraction Time ◽  
Power Extraction ◽  
Solid Ratio ◽  
Microwave Assisted ◽  
Assisted Extraction ◽  
Layer Chromatography ◽  
Optimum Extraction ◽  
Central Composite

A central composite rotatable design combined with response surface methodology was employed to study the effect of microwave assisted extraction (MAE) conditions namely microwave power, extraction time, liquid-solid ratio and ethanol proportion on the proanthocyanidins extraction from purple cabbage. The optimum extraction conditions were as follows: microwave power, 260 W; extraction time, 54s; liquid to solid ratio, 43; and ethanol concentration, 57%. The results showed proanthocyanidins had a significant effect on scavenging of DPPH radicals. At last, proanthocyanidins were identified by thin layer chromatography.

scholarly journals Microwave-assisted extraction of non-polar compounds from pistachio hull and characterization of extracts

2018 ◽  
Vol 69 (3) ◽  
pp. 260 ◽  
Author(s):  
H. N. Özbek ◽  
D. Koçak Yanık ◽  
S. Fadıloğlu ◽  
H. Keskin Çavdar ◽  
F. Göğüş
Keyword(s):  
Microwave Power ◽  
Polar Compounds ◽  
Good Alternative ◽  
Tocopherol Content ◽  
Extraction Time ◽  
Total Phenolic ◽  
Microwave Assisted Extraction ◽  
Solid Ratio ◽  
Microwave Assisted ◽  
Assisted Extraction

Soxhlet and microwave assisted extraction (MAE) methods were used to obtain non-polar compounds from pistachio hull. MAE parameters (liquid to solid ratio, microwave power, and extraction time) were studied to obtain maximum extraction yield. The optimal conditions were found to be liquid to solid ratio of 15:1 (v/w), microwave power of 250 W and extraction time of 12.5 min. The extraction yields were 9.81 and 9.50% for MAE and Soxhlet methods, respectively. The total phenolic content, antioxidant activity and tocopherol content of the extract obtained by MAE was found to be significantly higher than those of the Soxhlet extract (p < 0.05). The results showed that the extract contained α-tocopherols (567.65 mg/kg) and oleic acid (48.46%) as the major tocopherols and fatty acids. These findings propose that hull extracts can be considered as a good source of natural bioactive compounds and MAE can be a good alternative to the traditional Soxhlet method.

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.

Response Surface Optimization of Microwave-Assisted Extraction Conditions of Anthocyanins from Black Soybean Hull

2013 ◽  
Vol 395-396 ◽  
pp. 672-677
Author(s):  
Yi Hua Jiang ◽  
Xin Long Jiang
Keyword(s):  
Microwave Power ◽  
Ethanol Concentration ◽  
Extraction Time ◽  
Microwave Assisted Extraction ◽  
Black Soybean ◽  
Soybean Hull ◽  
Power Extraction ◽  
Microwave Assisted ◽  
Response Surface Optimization ◽  
Assisted Extraction

Surface response optimization of microwave-assisted extraction (MAE) conditions of anthocyanins from black soybean 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 ethanol concentration and ratio of liquid to solid had most important influence; the interaction of ethanol concentration and ratio of liquid to solid,interaction of microwave power and extraction time had significant influence on extraction anthocyanins from black soybean hull. The optimum extracting conditions of anthocyanin from black soybean hull were as follows: adding 1:40.00 (m:v) of 60.35% alcohol (pH2.0) and extracting for 74.26 s under the power of 237.86 W.

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.

A Study about Microwave-Assisted Extraction of Polysaccharides Form Medicinal Mushrooms Fomitopsis ulmaria (Sor.: For.) Bond. et Sing

2014 ◽  
Vol 1073-1076 ◽  
pp. 1837-1840 ◽  
Author(s):  
Yi Tao Zhao ◽  
Yu Qin Tang ◽  
Ke Zhen Liu ◽  
Yu Zhang
Keyword(s):  
Microwave Power ◽  
Orthogonal Design ◽  
Extraction Yield ◽  
Extraction Time ◽  
Microwave Assisted Extraction ◽  
Medicinal Mushrooms ◽  
Microwave Assisted ◽  
Assisted Extraction ◽  
Optimized Conditions ◽  
Optimum Extraction

Polysaccharides are main bioactive compounds of Fomitopsis ulmaria (Sor. : For.) Bond. et Sing (F. ulmaria). In this study, microwave-assisted extraction (MAE) method was employed for the extraction of polysaccharides form F. ulmaria (PFU). The important extraction parameters that influenced the extraction yield of PFU were optimized by employing an orthogonal design, including solvent/material ratio, microwave power, and extraction time. The results showed that the optimum extraction conditions were as followings: solvent/material ratio of 40:1 ml/g, microwave power of 400 W, and extraction time of 2.5 min. Under optimized conditions, the extraction yield of PFU was 8.36%. This work is expected to provide a scientific reference for the further research and industrial production of F. ulmaria.

Optimization of Microwave-Assisted Extraction of Polysaccharides from Acanthopanax Obouatus Hoo

2012 ◽  
Vol 549 ◽  
pp. 504-507
Author(s):  
Xiao Rong Li ◽  
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 from Acanthopanax obouatus Hoo(AHPs) 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 AHPs were studied through a Box-Behnken design (BBD). The optimum extraction conditions were as follows: extraction time 13.5min, power 796 W and ratio of water to raw material 16.5ml/g. The yield of polysaccharide was 5.18% based on the above mentioned conditions.

scholarly journals Effects of Microwave-Assisted Extraction Conditions on Antioxidant Capacity of Sweet Tea (Lithocarpus polystachyus Rehd.)

Antioxidants ◽  
2020 ◽  
Vol 9 (8) ◽  
pp. 678
Author(s):  
Ao Shang ◽  
Min Luo ◽  
Ren-You Gan ◽  
Xiao-Yu Xu ◽  
Yu Xia ◽  
...  
Keyword(s):  
Antioxidant Capacity ◽  
Microwave Power ◽  
Ethanol Concentration ◽  
Extraction Time ◽  
Extraction Temperature ◽  
Microwave Assisted Extraction ◽  
Optimal Conditions ◽  
Microwave Assisted ◽  
Assisted Extraction ◽  
Sample Ratio

In this study, the effects of microwave-assisted extraction conditions on antioxidant capacity of sweet tea (Lithocarpus polystachyus Rehd.) were studied and the antioxidants in the extract were identified. The influences of ethanol concentration, solvent-to-sample ratio, microwave power, extraction temperature and extraction time on Trolox equivalent antioxidant capacity (TEAC) value, ferric reducing antioxidant power (FRAP) value and total phenolic content (TPC) were investigated by single-factor experiments. The response surface methodology (RSM) was used to study the interaction of three parameters which had significant influences on antioxidant capacity including ethanol concentration, solvent-to-sample ratio and extraction time. The optimal conditions for the extraction of antioxidants from sweet tea were found as follows—ethanol concentration of 58.43% (v/v), solvent-to-sample ratio of 35.39:1 mL/g, extraction time of 25.26 min, extraction temperature of 50 ℃ and microwave power of 600 W. The FRAP, TEAC and TPC values of the extract under the optimal conditions were 381.29 ± 4.42 μM Fe(II)/g dry weight (DW), 613.11 ± 9.32 μM Trolox/g DW and 135.94 ± 0.52 mg gallic acid equivalent (GAE)/g DW, respectively. In addition, the major antioxidant components in the extract were detected by high-performance liquid chromatography with diode array detection (HPLC-DAD), including phlorizin, phloretin and trilobatin. The crude extract could be used as food additives or developed into functional food for the prevention and management of oxidative stress-related diseases.

Microwave-Assisted Extraction and In Vitro Antioxidant Evaluation of Polysaccharides from Enteromorpha prolifera

2011 ◽  
Vol 79 ◽  
pp. 204-209 ◽  
Author(s):  
Bin Wang ◽  
Guo Zhong Tong ◽  
You Le Qu ◽  
Li Li
Keyword(s):  
Microwave Power ◽  
Radical Scavenging ◽  
Hot Water ◽  
Butylated Hydroxytoluene ◽  
Extraction Time ◽  
Microwave Assisted Extraction ◽  
Enteromorpha Prolifera ◽  
Microwave Assisted ◽  
Assisted Extraction ◽  
Liquid Material

An efficient microwave-assisted extraction (MAE) technique was developed to extract polysaccharides from Enteromorpha prolifera (PEP). The operating parameters, such as microwave power, liquid/material ratio, temperature and extraction time, were optimized using orthogonal array design coupled with single factor method. PEP yield was determined by the phenol-sulfuric acid method. The optimum extraction conditions were determined as follows: microwave power, 700 W; liquid/material ratio, 40:1 (mL/g); temperature, 70 °C; and extraction time, 25 min. Under such conditions, PEP yield reached to 10.79 %. In comparison with conventional hot water extraction and ultrasonic-assisted extraction, MAE showed obvious advantages in terms of high extraction efficiency, saving energy, rapidity, solvent consumption, and so on. The data demonstrated that MAE could be a fast and reliable method for quantitative analysis of PEP. The scavenging capability of PEP to DPPH/hydroxyl radical reached to 65.2 % and 41.2 % at the concentration of 0.5 mg/mL. The reducing power of PEP was 0.354. Compared with butylated hydroxytoluene (BHT) and gallic acid (GA), the experimental results showed that DPPH radical scavenging activity of PEP was higher than that of BHT. Thus, PEP had good potential as a natural antioxidant used in functional food or medicine industries.

scholarly journals Optimization of the Vacuum Microwave Assisted Extraction of the Natural Polyphenols and Flavonoids from the Raw Solid Waste of the Pomegranate Juice Producing Industry at Industrial Scale

Molecules ◽  
2021 ◽  
Vol 26 (4) ◽  
pp. 1033
Author(s):  
Konstantinos Petrotos ◽  
Ioannis Giavasis ◽  
Konstantinos Gerasopoulos ◽  
Chrysanthi Mitsagga ◽  
Chryssoula Papaioannou ◽  
...  
Keyword(s):  
Solid Waste ◽  
Microwave Power ◽  
Extraction Time ◽  
Pomegranate Juice ◽  
Industrial Scale ◽  
Microwave Assisted Extraction ◽  
Total Polyphenols ◽  
Microwave Assisted ◽  
Assisted Extraction ◽  
Vacuum Microwave

Pomegranate pomace (PP) is the solid waste produced in bulk by the pomegranate juice industry which is rich in polyphenols and flavonoids that can replace the hazardous chemical antioxidants/antimicrobials currently used in the agro-food and cosmetics sectors. In the present work, the vacuum microwave assisted extraction (VMAE) of natural antioxidants from raw pomegranate pomace was investigated and successfully optimized at an industrial scale. For the optimization of PP VMAE a novel, highly accurate response surface methodology (RSM) based on a comprehensive multi-point historical design was employed. The optimization showed that the maximum recovery of PP total polyphenols as well as total PP flavonoids were obtained at microwave power = 4961.07 W, water to pomace ratio = 29.9, extraction time = 119.53 min and microwave power = 4147.76 W, water to pomace ratio = 19.32, extraction time = 63.32 min respectively. Moreover, the optimal VMAE conditions on economic grounds were determined to be: microwave power = 2048.62 W, water to pomace ratio = 23.11, extraction time = 15.04 min and microwave power = 4008.62 W, water to pomace ratio = 18.08, extraction time = 15.29 min for PP total polyphenols and PP total flavonoids respectively. The main conclusion of this study is that the VMAE extraction can be successfully used at industrial scale to produce, in economic manner, high added value natural extracts from PP pomace.

scholarly journals Optimasi Metode Microwave-Assisted Extraction (MAE) untuk Menentukan Kadar Flavonoid Total Alga Coklat Padina australis

2020 ◽  
Vol 16 (1) ◽  
pp. 38
Author(s):  
Bina Lohita Sari ◽  
Triastinurmiatiningsih Triastinurmiatiningsih ◽  
Tri Saptari Haryani
Keyword(s):  
Microwave Power ◽  
Ethanol Concentration ◽  
Total Flavonoid ◽  
Total Flavonoid Content ◽  
Microwave Assisted Extraction ◽  
Flavonoid Content ◽  
Extraction Condition ◽  
Microwave Assisted ◽  
Assisted Extraction ◽  
Optimum Extraction

<p>Metode <em>Microwave-Assisted Extraction</em> (MAE) digunakan untuk mengekstraksi senyawa flavonoid dari simplisia alga coklat <em>Padina australis</em>. Sampel diperoleh dari Pantai Bayah, Banten Indonesia. Kondisi optimal ekstraksi ditentukan dengan <em>Response Surface Methodology </em>(RSM). Desain Box-Behnken (BBD) digunakan untuk mengevaluasi pengaruh 3 faktor dengan 3 <em>level</em> yaitu daya <em>microwave</em> (300, 450, 600 watt), konsentrasi etanol  (30, 50, 70%), dan waktu ekstraksi (7, 8 dan 9 menit) dengan 15 perlakuan yang berbeda. Hasil disain eksperimen dengan BBD menunjukkan kondisi ekstraksi optimum yaitu pada daya <em>microwave</em> 414 watt, konsentrasi etanol 50,33% dan waktu ekstraksi 7,89 menit menghasilkan kadar prediksi flavonoid sebesar nilai 0,2963%. Nilai ini mendekati nilai kadar flavonoid yang diperoleh secara eksperimental sebesar 0,2961%, pada kondisi menggunakan daya microwave sebesar 450 watt, konsentrasi etanol 50% dengan lama ekstraksi 8 menit. Berdasarkan hasil penelitian, kadar flavonoid total dapat meningkat secara signifikan dengan melakukan optimasi proses MAE menggunakan RSM.</p><p><strong>Optimization of Microwave-Assisted Extraction for Total Flavonoid Content of <em>Padina australis</em> Brown Algae. </strong><strong> </strong>Microwave-Assisted Extraction (MAE) was done to extraction flavonoid from<em> Padina australis</em> brown algae simplicial. The sample collected from Bayah coastal waters, Banten Indonesia. Optimum extraction condition was determined by the response surface methodology (RSM). The Box-Behnken design (BBD) was used to evaluate the influence of 3 factors with 3 levels extraction that is microwave power (300, 450, 600 watts), ethanol concentration (30, 50, 70%), and extraction time (7, 8 and 9 minutes) with 15 different runs. The research showed that optimum extraction condition was at 414 watts of microwave power, 50.33% ethanol concentration, and time extraction of 7.89 minutes yielded a predicted value of total flavonoid content of 0.2963%. This value approaches to the flavonoid content obtained experimentally at 0.2961% under condition of 450 watts microwave power, 50% ethanol concentration, and time extraction of 8 minutes. Based on the result, total flavonoid content can be significantly increased by optimizing the MAE process use RSM.</p>

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