Microwave-assisted extraction of phenolic compounds from Sacha Inchi shell: Optimization, physicochemical properties and evaluation of their antioxidant activity

2020 ◽  
Vol 153 ◽  
pp. 107922 ◽  
Author(s):  
Zain Sanchez-Reinoso ◽  
William Isidro Mora-Adames ◽  
Carlos Alberto Fuenmayor ◽  
Aquiles Enrique Darghan-Contreras ◽  
Claudio Gardana ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Phenolic Compounds ◽  
Physicochemical Properties ◽  
Microwave Assisted Extraction ◽  
Microwave Assisted ◽  
Assisted Extraction ◽  
Sacha Inchi ◽  
Shell Optimization

scholarly journals Microwave-Assisted Extraction and Ultrasound-Assisted Extraction of Bioactive Compounds from Grape Pomace

2020 ◽  
Vol 16 (1-2) ◽  
Author(s):  
Cassiano Brown da Rocha ◽  
Caciano Pelayo Zapata Noreña
Keyword(s):  
Antioxidant Activity ◽  
Phenolic Compounds ◽  
Bioactive Compounds ◽  
Grape Pomace ◽  
Total Phenolic ◽  
Microwave Assisted Extraction ◽  
Ultrasound Assisted Extraction ◽  
Microwave Assisted ◽  
Assisted Extraction ◽  
Ultrasound Assisted

AbstractThe grape pomace is a by-product from the industrial processing of grape juice, which can be used as a source of bioactive compounds. The aim of this study was to separate the phenolic compounds from grape pomace using an acidic aqueous solution with 2 % citric acid as a solvent, using both ultrasound-assisted extraction, with powers of 250, 350 and 450 W and times of 5, 10 and 15 min, and microwave-assisted extraction using powers of 600, 800 and 1,000 W and times of 5, 7 and 10 min. The results showed that for both methods of extraction, the contents of total phenolic compounds and antioxidant activity by ABTS and DPPH increased with time, and microwave at 1,000 W for 10 min corresponded to the best extraction condition. However, the contents of phenolic compounds and antioxidant activity were lower than exhaustive extraction using acidified methanol solution.

scholarly journals Optimization of Microwave-Assisted Extraction of Phenolic Compounds with Antioxidant Activity from Carob Pods

2019 ◽  
Vol 12 (11) ◽  
pp. 2480-2490 ◽  
Author(s):  
L. Quiles-Carrillo ◽  
C. Mellinas ◽  
M. C. Garrigos ◽  
R. Balart ◽  
S. Torres-Giner
Keyword(s):  
Antioxidant Activity ◽  
Phenolic Compounds ◽  
Microwave Assisted Extraction ◽  
Microwave Assisted ◽  
Assisted Extraction

scholarly journals Microwave Assisted Extraction of Papaya Leaves and Investigation on Antioxidant Activity

2021 ◽  
pp. 115-122
Author(s):  
. Shobitharai ◽  
Divya Jyothi ◽  
Swathi Das ◽  
C. M. Sumayya ◽  
A. Thabsheer
Keyword(s):  
Antioxidant Activity ◽  
Phenolic Compounds ◽  
Extraction Efficiency ◽  
Phenolic Content ◽  
Total Phenolic ◽  
Phytochemical Analysis ◽  
Microwave Assisted Extraction ◽  
Microwave Assisted ◽  
Assisted Extraction ◽  
Conventional Extraction

Microwave assisted extraction (MAE) has gained lot of attention due to its advantages such as less solvent consumption, short time period, higher extraction efficiency, therefore serves as better alternative for conventional extraction methods of plant materials. Plant phenolic compounds are important constituents responsible for reducing the oxidative stress that induces tissue damage which is the one of the major causative factors associated with the chronic disease. Papaya plant is a medicinal plant which became popular for the treatment of dengue fever due to its property. Considering the current medicinal importance of the papaya plant, the present study was aimed at microwave assisted extraction of phenolic content from papaya leaf using ethanol, water as solvent and investigate their antioxidant potential. In order to compare the extraction efficiency of phenolic compounds, conventional extraction and microwave assisted extraction method was used to prepare the extracts. Then extracts were subjected to preliminary phytochemical analysis followed by the estimation of total phenolic content by using Folin-Ciocalteu method. Antioxidant activity was investigated by 2,2-diphenyl-1-picrylhydrazyl (DPPH) assay. The alcoholic and aqueous extracts of papaya leaf showed the presence of steroids, alkaloids, saponins, carbohydrates, phenolic compounds by preliminary phytochemical analysis. FTIR spectrum of both aqueous and ethanolic extract showed characteristic peak at 3314.62 cm-1, 1635 cm-1 which provide evidence for presence of phenolic compounds. The total phenolic content of the alcoholic and aqueous leaf extracts from MAE was found to be 43.58mg and 80.58 mg/g papaya leaf powder of the Gallic acid equivalent (GAE), respectively. Aqueous solvent was found to be suitable for extraction of phenolic content from papaya leaf and Microwave assisted extracts showed higher phenolic content and therefore potential antioxidant activity. Therefore, papaya leaf is a good candidate to be used as a natural antioxidant for the treatment of various diseases.

scholarly journals Simultaneous Optimization of Microwave-Assisted Extraction of Phenolic Compounds and Antioxidant Activity of Avocado (Persea americana Mill.) Seeds Using Response Surface Methodology

2020 ◽  
Vol 2020 ◽  
pp. 1-11
Author(s):  
Alexander Weremfo ◽  
Felix Adulley ◽  
Martin Adarkwah-Yiadom
Keyword(s):  
Antioxidant Activity ◽  
Response Surface Methodology ◽  
Phenolic Compounds ◽  
Response Surface ◽  
Microwave Power ◽  
Ethanol Concentration ◽  
Extraction Time ◽  
Microwave Assisted Extraction ◽  
Microwave Assisted ◽  
Assisted Extraction

This study was designed to optimize three microwave-assisted extraction (MAE) parameters (ethanol concentration, microwave power, and extraction time) of total phenolics, total flavonoids, and antioxidant activity of avocado seeds using response surface methodology (RSM). The predicted quadratic models were highly significant (p<0.001) for the responses studied. The extraction of total phenolic content (TPC), total flavonoid content (TFC), and antioxidant activity was significantly (p<0.05) influenced by both microwave power and extraction time. The optimal conditions for simultaneous extraction of phenolic compounds and antioxidant activity were ethanol concentration of 58.3% (v/v), microwave power of 400 W, and extraction time of 4.8 min. Under these conditions, the experimental results agreed with the predicted values. MAE revealed clear advantages over the conventional solvent extraction (CSE) in terms of high extraction efficiency and antioxidant activity within the shortest extraction time. Furthermore, high-performance liquid chromatography (HPLC) analysis of optimized extract revealed the presence of 10 phenolic compounds, with rutin, catechin, and syringic acid being the dominant compounds. Consequently, this optimized MAE method has demonstrated a potential application for efficient extraction of polyphenolic antioxidants from avocado seeds in the nutraceutical industries.

scholarly journals Ekstraksi Senyawa Fenolik Daun Kenikir (Cosmos caudatus) menggunakan Microwave Assisted Extraction (MAE)

2018 ◽  
Vol 11 (1) ◽  
pp. 59-70
Author(s):  
Angky Wahyu Putranto ◽  
Shinta Rosalia Dewi ◽  
Ni'matul Izza ◽  
Dian Rahmat Yuneri ◽  
Maria Yeniaska S. Dachi ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Phenolic Compounds ◽  
Extraction Time ◽  
Total Phenolic ◽  
Solvent Ratio ◽  
Microwave Assisted Extraction ◽  
Total Phenolic Compounds ◽  
Microwave Assisted ◽  
Cosmos Caudatus ◽  
Assisted Extraction

Abstrak. Kenikir (Cosmos caudatus) adalah tanaman yang sering dimanfaatkan daunnya untuk bahan pangan maupun juga sebagai obat-obatan karena memiliki kandungan senyawa fenolik yang cukup tinggi. Ekstraksi senyawa fenol menggunakan metode konvensional masih memerlukan waktu yang cukup lama dan jumlah pelarut yang banyak. Sehingga perlu dicari alternatif metode ekstraksi yang memiliki waktu ekstraksi dan kebutuhan pelarut yang relatif rendah seperti menggunakan Microwave Assisted Extraction (MAE). Tujuan dari penelitian ini adalah melakukan ekstraksi senyawa fenolik dari daun kenikir dengan metode MAE terhadap total fenol dan aktivitas antioksidan. Penelitian ini menggunakan 2 faktor perlakuan yaitu rasio pelarut terhadap kenikir segar yaitu 1:4, 1:6, dan 1:8 (b/v) dan waktu ekstraksi 2, 3 dan 4 menit. Penelitian ini menjelaskan bahwa nilai total fenol tertinggi (17,162 ± 0,11 mg GAE/g berat segar) diperoleh pada perlakuan rasio pelarut 1:8 (b/v), sedangkan aktivitas antioksidan tertinggi (4,203 ± 0,26 mg/ml) pada perlakuan rasio pelarut 1:4 (b/v). Waktu perlakuan 3 menit menunjukkan hasil yang optimal untuk nilai total fenol dan aktivitas antioksidan. Hasil tersebut juga menunjukkan nilai yang lebih baik jika dibandingkan dengan metode konvensional baik dengan maserasi biasa dan maserasi dengan waterbath. Extraction of Phenolic Compounds from Cosmos caudatus using Microwave Assisted Extraction (MAE) Abstract. Cosmos caudatus, a plant commonly used its leaves for food and also as a medicine since it contains high phenolic compounds. The extraction of phenolic compounds using conventional methods still require more extraction time and need much more of solvent. Therefore, it was necessary to find an alternative extraction method that has a rapid extraction time and a few solvent need such as using Microwave Assisted Extraction (MAE). The aim of this study is to extract of phenolic compounds from Cosmos caudatus with MAE method of total phenol and antioxidant activity. This study using 2 treatment factors, the sampel-solvent ratio of 1:4, 1:6, and 1:8 (w/v) and the extraction time of 2, 3 and 4 minutes. This study explained that the highest total phenolic compounds (17.162 ± 0.11 mg GAE/g fw) and antioxidant activity (4.203 ± 0.26 mg/ml) were obtained at 1:8 and 1:4 (w/v) of sampel-solvent ratio, respectively. The extraction time of 3 minutes was the optimal condition for total phenolic compounds and antioxidant activity. These results also showed the highest parameter value when compared with both conventional methods: maceration and maceration with waterbath. 

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