scholarly journals Extraction of Antioxidant Compounds and Pigments from Spirulina (Arthrospira platensis) Assisted by Pulsed Electric Fields and the Binary Mixture of Organic Solvents and Water

2021 ◽  
Vol 11 (16) ◽  
pp. 7629
Author(s):  
Francisco J. Martí-Quijal ◽  
Francesc Ramon-Mascarell ◽  
Noelia Pallarés ◽  
Emilia Ferrer ◽  
Houda Berrada ◽  
...  
Keyword(s):  
Phenolic Compounds ◽  
Binary Mixture ◽  
Electric Fields ◽  
Pulsed Electric Fields ◽  
Extraction Yield ◽  
Total Phenolic ◽  
Antioxidant Compounds ◽  
Total Phenolic Compounds ◽  
Extraction Technology ◽  
Pre Treatment

The application of pulsed electric fields (PEF) is an innovative extraction technology promoting cell membrane electroporation, thus allowing for an efficient recovery, from an energy point of view, of antioxidant compounds (chlorophylls, carotenoids, total phenolic compounds, etc.) from microalgae. Due to its selectivity and high extraction yield, the effects of PEF pre-treatment (3 kV/cm, 100 kJ/kg) combined with supplementary extraction at different times (5–180 min) and with different solvents (ethanol (EtOH)/H2O, 50:50, v/v; dimethyl sulfoxide (DMSO)/H2O, 50:50, v/v) were evaluated in order to obtain the optimal conditions for the extraction of different antioxidant compounds and pigments. In addition, the results obtained were compared with those of a conventional treatment (without PEF pre-treatment but with constant shaking). After carrying out the different experiments, the best extraction conditions to recover the different compounds were obtained after applying PEF pre-treatment combined with the binary mixture EtOH/H2O, 50:50, v/v, for 60–120 min. PEF extraction was more efficient throughout the study, especially at short extraction times (5–15 min). In this sense, recovery of 55–60%, 85–90%, and 60–70% was obtained for chlorophylls, carotenoids, and total phenolic compounds, respectively, compared to the maximum total extracted amount. These results show that PEF improves the extraction yield of antioxidant bioactive compounds from microalgae and is a promising technology due to its profitability and environmental sustainability.

scholarly journals Comparison Between Antioxidant Activities of Phenolic Extracts from Mexican Peanuts, Peanuts Skins, Nuts and Pistachios

2017 ◽  
Vol 58 (2) ◽  
Author(s):  
Patricia Rosales-Martínez ◽  
Sofía Arellano-Cárdenas ◽  
Lidia Dorantes-Álvarez ◽  
Felipe García-Ochoa ◽  
Ma Del Socorro López-Cortez
Keyword(s):  
Heart Disease ◽  
Phenolic Compounds ◽  
Chemical Analysis ◽  
Antioxidant Capacity ◽  
Bioactive Compounds ◽  
Antioxidant Activities ◽  
Total Phenolic ◽  
Antioxidant Compounds ◽  
Total Phenolic Compounds ◽  
Phenolic Extracts

Recently, several works have been done in order to study antioxidant compounds like resveratrol present in oilseeds since they are able to protect from cells damage related to heart disease and cancer. In the present research a chemical analysis and the identification of bioactive compounds of peanuts, nuts and pistachios varieties were carried out. The <strong>walnut</strong> variety showed the highest content of total phenolic compounds (1404 ± 23 mg GAE/100 g) and antioxidant capacity (191 ± 4.2 μmol TE/g). Phenolic compounds resveratrol, catechin, epicatechin and quercetin were identified in all samples.

scholarly journals Susam Kepeğinden Protein ve Antioksidan Özellikli Maddelerin Geri Kazanım Potansiyelinin Bazı Temel Bileşim Analizleri ile İncelenmesi

2019 ◽  
Vol 7 (4) ◽  
pp. 624 ◽  
Author(s):  
Ahmet Görgüç ◽  
Fatih Mehmet Yılmaz
Keyword(s):  
Phenolic Compounds ◽  
Protein Extraction ◽  
Animal Feed ◽  
Sesame Seed ◽  
Extraction Yield ◽  
Total Phenolic ◽  
Antioxidant Compounds ◽  
Dry Processing ◽  
Wet Processing ◽  
Processing Line

Sesame bran is an industrial waste which is either not currently evaluated technologically or has limited use as animal feed. In this study, recovery potentials of protein and antioxidant compounds were investigated from three different sesame brans which are emerge as waste from dry and wet processing lines of the sesame - an intensively used input by roasted sesame seed, tahini and tahini halva plants especially in our country. In this context, protein extraction by alkaline method was conducted on brans obtained from three different processing lines (Dry line I, Dry line II and Wet line II). In addition, effects of aqueous solutions (70%, v/v) of acetone, ethanol and methanol on the extraction of phenolic compounds from sesame brans were investigated. Dry processing line sesame bran was found to have lower protein content than wet processing line bran; however, higher protein extraction yield was obtained by dry processing line bran. Phenolic compound extracts of dry and wet processing line sesame brans were found to have higher total phenolic content and antioxidant capacity values (DPPH and ABTS assays) than protein extracts obtained by alkaline method. It was determined that the most effective solvent for the extraction of phenolic compounds from sesame bran was 70% acetone solution; and the results of the ethanol and methanol extracts used as solvents were not significantly different.

scholarly journals Subcritical Water Extraction of Antioxidants from Curculigo latifolia Root

2019 ◽  
Vol 2019 ◽  
pp. 1-10 ◽  
Author(s):  
Nur Athirah Zabidi ◽  
Nur Akmal Ishak ◽  
Muhajir Hamid ◽  
Siti Efliza Ashari
Keyword(s):  
Phenolic Compounds ◽  
Subcritical Water ◽  
Extraction Yield ◽  
Water Extraction ◽  
Total Phenolic ◽  
Antioxidant Compounds ◽  
Root Extract ◽  
Extraction Temperature ◽  
Subcritical Water Extraction ◽  
Trolox Equivalent

This study aims to extract antioxidant compounds from Curculigo latifolia root by subcritical water extraction (SWE). The influence of extraction temperature and time on the antioxidant activity of C. latifolia root extract was investigated in terms of extraction yield, total phenolic content (TPC), total flavonoid content (TFC), 2, 2′-azino-bis-3-ethylbenzothiazoline-6-sulphonic acid (ABTS), and 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical. The highest extraction yield (36.5%), TPC (92.55 mg GAE/g), TFC (13.26 mg RE/g), and antioxidant activities by ABTS (66.8 mg trolox equivalent/g sample) and DPPH (128.7 mg trolox equivalent/g sample) were detected at 180°C and 30 minutes extraction time. Based on the results, the optimum condition was selected at 180°C and 30 minutes of extraction. The sample was screened by using liquid chromatography-mass spectrometry (LC-MS) analysis where the phenolic compounds detected were structured based on their [M-H]-peak. The detected phenolic compounds were monobenzone, hydroquinone, phloridzin, pomiferin, mundulone, scandenin, and dimethyl caffeic acid. According to these findings, SWE is a promising, environmentally friendly, and efficient technology in the exploitation of natural products for the development of food and nutraceutical commodities.

scholarly journals Optimization of Ultrasound Assisted Extraction of Bioactive Compounds from Apple Pomace

Molecules ◽  
2021 ◽  
Vol 26 (13) ◽  
pp. 3783
Author(s):  
Itziar Egüés ◽  
Fabio Hernandez-Ramos ◽  
Iván Rivilla ◽  
Jalel Labidi
Keyword(s):  
Phenolic Compounds ◽  
Antioxidant Capacity ◽  
Extraction Yield ◽  
Apple Pomace ◽  
Total Phenolic ◽  
Antioxidant Compounds ◽  
Ultrasound Assisted Extraction ◽  
Assisted Extraction ◽  
Maximum Extraction ◽  
Ultrasound Technology

In the present work, the optimization of the extraction of antioxidant compounds from apple pomace using ultrasound technology as an environmentally friendly and intensification process was developed. Different sonication powers, extraction temperatures and extraction times were studied and their influence on extraction yield and characteristics of the extracted samples (total phenolic compounds, flavonoid content and antioxidant capacity) are presented. The elaborated experimental design and the analysis of Pareto and response surface diagrams allowed us to determine the optimal extraction conditions. The conditions that allow the maximum extraction of phenolic compounds were found at 20 min, 90 °C and 50% ultrasound amplitude. Nevertheless, at these conditions, the antioxidant capacity measured by DPPH decreased in the extracted samples.

scholarly journals Extraction of Polyphenols from Olive Leaves Employing Deep Eutectic Solvents: The Application of Chemometrics to a Quantitative Study on Antioxidant Compounds

2022 ◽  
Vol 12 (2) ◽  
pp. 831
Author(s):  
Hamida Akli ◽  
Spyros Grigorakis ◽  
Abdessamie Kellil ◽  
Sofia Loupassaki ◽  
Dimitris P. Makris ◽  
...  
Keyword(s):  
Phenolic Compounds ◽  
Deep Eutectic Solvents ◽  
Extraction Process ◽  
Extraction Yield ◽  
Total Phenolic ◽  
Antioxidant Compounds ◽  
Extraction Temperature ◽  
Olive Leaves ◽  
Box Behnken Design ◽  
Solid Ratio

The extraction of phenolic compounds from olive leaves was optimized using three glycerol-based deep eutectic solvents (DESs) with lysine, proline, and arginine. A three-level Box–Behnken design was used to examine the influence of the liquid/solid ratio, concentration of DESs, and extraction temperature on the yield of the extraction process. A second-order polynomial model was used for predicting the polyphenol extraction yield. The optimal predicted conditions were used for extractions and they provided the highest total phenol yields with the glycerol–lysine exhibiting the best performance. Quantification of tyrosol, hydroxytyrosol, oleuropein, luteolin-7-O-glucoside, and rutin in the extracts showed high content in tyrosol in all DESs, particularly with glycerol–lysine and relatively similar contents with other studies for the other phenolic compounds. Finally, a linear relationship between tyrosol content and the total phenolic content of the extracts was observed.

scholarly journals Effect of Time, Solvent-Solid Ratio, Ethanol Concentration and Temperature on Extraction Yield of Phenolic Compounds From Olive Leaves

2018 ◽  
Vol 8 (2) ◽  
pp. 2805-2808
Author(s):  
N. Elboughdiri
Keyword(s):  
Phenolic Compounds ◽  
Ethanol Concentration ◽  
Extraction Yield ◽  
Extraction Time ◽  
Total Phenolic ◽  
Optimal Conditions ◽  
Total Phenolic Compounds ◽  
Olive Leaves ◽  
Factors Affecting ◽  
Solid Ratio

This study aims to determine the factors affecting the process of extraction of phenolic compounds from olive leaves. Two methods of extraction were used in this work and different tests were implemented with the aim of optimizing the recovery of phenolic compounds from olive leaves. The factors considered were the extraction time, temperature, solvent-solid ratio and the ethanol concentration. Obtained results show that the recommended optimal conditions for the extraction of the total phenolic compounds from olive leaves were found at 40°C with a solvent/solid ratio of 30:1 and ethanol concentration of 80% (v/v) when the dried olive leaves are stored at -21°C at the beginning of the experiments.

scholarly journals Aqueous Enzymatic Extraction of Buriti (Mauritia Flexuosa) Oil: Yield and Antioxidant Compounds

2019 ◽  
Vol 11 (1) ◽  
pp. 9-17 ◽  
Author(s):  
Jezica P.P. Silva ◽  
Antonio M.C. Rodrigues ◽  
Luiza H.M. Silva
Keyword(s):  
Phenolic Compounds ◽  
Antioxidant Capacity ◽  
Extraction Process ◽  
Aqueous Extraction ◽  
Carotenoid Content ◽  
Total Phenolic ◽  
Antioxidant Compounds ◽  
Total Phenolic Compounds ◽  
Buriti Oil ◽  
Aqueous Extraction Process

Introduction: Enzyme-assisted aqueous extraction is considered an emerging green technique that has been applied to different oilseeds. Objective: This study aimed to study the enzymatic aqueous extraction process of buriti oil using a central composite rotatable design (CCRD) combined with the response surface methodology aiming to obtain higher yield and antioxidant compounds in the oil. Methods: The study was carried out in two steps. The first assessed the efficiency of different enzymes (cellulase, pectinase, and protease) and the variables of greater influence in the extraction process, being conducted for each enzyme a CCRD design. The second step was carried out with the enzyme that showed the best performance on the extraction yield, changing the experimental bands of the variables that had greater significance in the first step, with the goal of broadening the spectrum of study. Were also evaluated in this step, total carotenoids, total phenolic compounds, and the antioxidant capacity of the oils extracted. Results: In the first experiment, cellulase gave the highest yield, while the most significant variables were temperature and time. For the second design, performed with cellulase, were defined as optimal operating conditions at 55 °C temperature, 2% enzyme concentration and 6 hours extraction. For these conditions, the yield obtained was 76.5%, with total carotenoid concentration of 3,119.5 µg β-carotene.g-1. Analysis of variance was performed and showed the significance of the regression and non-significance of the lack-of-fit (p<0.05). The coefficients of determination of the yield and carotenoid content were 95.6% and 94.5%, respectively. The highest value of total phenolic compounds determined for buriti oil in this study was 254 ± 5 µg GAE.g-1 oil, while for the antioxidant capacity was 218.0 ± 0.3 µmol Trolox.g-1 oil. Conclusion: The enzymatic aqueous extraction process is viable for buriti oil and produced oils with high concentrations of antioxidant compounds.

scholarly journals Effect of Pulsed Electric Fields (PEF) on Extraction Yield and Stability of Oil Obtained from Dry Pecan Nuts (Carya illinoinensis (Wangenh. K. Koch))

Foods ◽  
2021 ◽  
Vol 10 (7) ◽  
pp. 1541
Author(s):  
Lourdes Melisa Rábago-Panduro ◽  
Mariana Morales-de la Peña ◽  
María Paz Romero-Fabregat ◽  
Olga Martín-Belloso ◽  
Jorge Welti-Chanes
Keyword(s):  
Phenolic Compounds ◽  
Electric Fields ◽  
Microstructural Analysis ◽  
Pulsed Electric Fields ◽  
Stability Index ◽  
Extraction Yield ◽  
Oil Stability ◽  
Oil Stability Index ◽  
Total Oil ◽  
By Products

Pulsed electric fields (PEF) have been reported to increase the total oil extraction yield (OEYTOTAL) of fresh pecan nuts maintaining oil characteristics and increasing phenolic compounds in the remaining by-product. However, there is no information regarding the PEF effect on dry pecan nuts. Dry kernels were pretreated at three specific energy inputs (0.8, 7.8 and 15.0 kJ/kg) and compared against untreated kernels and kernels soaked at 3, 20 and 35 min. OEYTOTAL, kernels microstructure, oil stability (acidity, antioxidant capacity (AC), oil stability index, phytosterols and lipoxygenase activity), along with by-products phenolic compounds (total phenolics (TP), condensed tannins (CT)) and AC were evaluated. Untreated kernels yielded 88.7 ± 3.0%, whereas OEYTOTAL of soaked and PEF-treated kernels were 76.5–83.0 and 79.8–85.0%, respectively. Kernels microstructural analysis evidenced that the 0.8 kJ/kg pretreatment induced oleosomes fusion, while no differences were observed in the stability of extracted oils. PEF applied at 0.8 kJ/kg also increased by-products CT by 27.0–43.5% and AC by 21.8–24.3% compared to soaked and untreated kernels. These results showed that PEF does not improve OEYTOTAL when it is applied to dry pecan nuts, demonstrating that kernelsʹ moisture, oil content and microstructure play an important role in the effectiveness of PEF.

scholarly journals Produksi Ekstrak Bioaktif Untuk Aditif Pangan Dari Limbah Kulit Buah Naga: Pengaruh Metode Pre-Treatment Dan Ekstraksi

2020 ◽  
Vol 8 (1) ◽  
pp. 43-50
Author(s):  
Dian Shofinita ◽  
Yazid Bindar ◽  
Arwinda Aprillia Jaelawijaya ◽  
Ardiyan Harimawan ◽  
Mifta Fawwaz
Keyword(s):  
Phenolic Compounds ◽  
Food Additives ◽  
Soxhlet Extraction ◽  
Extraction Methods ◽  
Total Phenolic ◽  
Total Phenolic Compounds ◽  
Bioactive Materials ◽  
Fruit Skin ◽  
Dragon Fruit ◽  
Pre Treatment

Dragon fruit is one of the tropical fruits can be grown in Indonesia. The skin of dragon fruit, which is accounted for 30-35% of the whole fruit usually thrown away as waste. This study aims to produce a bioactive extract from extraction of dragon fruit skin that is rich in phenolic and pigment compounds then it used as food additives. The variation that was used in this study includes the application of drying as pre-treatment of dragon fruit skin and the extraction methods (maceration and Soxhlet extraction). The obtained extracts were evaluated for the amount of total phenolic compounds and pigments (anthocyanin and betacyanin). Drying of dragon fruit skin was found to yield lower amounts of bioactive materials, which may occur due to the thermal degradation even though a low drying temperature was used. In addition, the maceration method was found to give a higher amount of bioactive materials compared with the Soxhlet method. The extraction with the highest yield of bioactive materials was obtained by the use of fresh dragon fruit skin and maceration for 240 minutes, which gave amounts of anthocyanin, betacyanin, and total phenolic compounds of  0.08, 0.04, dan 0.35 mg/g fresh dragon fruit skin, respectively.

Phytochemical composition and antioxidant activity of Malus baccata (L.) Borkh. fruits

2020 ◽  
Vol 3 (1) ◽  
pp. 47
Author(s):  
Nadezhda Petkova ◽  
Manol Ognyanov ◽  
Blaga Inyutin ◽  
Petar Zhelev ◽  
Panteley Denev
Keyword(s):  
Phenolic Compounds ◽  
Antioxidant Activities ◽  
Ethanol Extract ◽  
Titratable Acidity ◽  
Total Phenolic ◽  
Total Phenolic Compounds ◽  
Frap Assay ◽  
Phytochemical Composition ◽  
Malus Baccata

Crab apple (Malus baccata (L.) Borkh.) was mainly distributed in Europe as an ornamental plant, but the nutritional properties of its edible fruits were not fully revealed. The aim of the current study was to characterize the phytochemical composition of ripen carb apple fruits and to evaluate their nutritional and antioxidant potentials. The fruits were assayed for moisture and ash content, proteins, lipids, carbohydrates, titratable acidity (TA), pH, total phenolic compounds and natural pigments. Among the analyzed carbohydrates cellulose was found in the highest content (6% dw), followed by sugars (sucrose, glucose and fructose) and 1.8 % dw uronic acids. The total chlorophylls and carotenoids contents in their fruits were 6.51 and 4.80 μg/g fw, respectively. Total monomeric anthocyanins were not detected. The highest content of total phenolic compounds (2.67 mg GAE/g fw) was found in 95 % ethanol extract from fruits, while the total flavonoids were relatively low – 0.1 mg QE/g fw. DPPH assay (17.27 mM TE/g fw) and FRAP assay (14.34 mM TE/g fw) demonstrated in vitro antioxidant activities of crabapple. Malus baccata fruits were evaluated as a rich source of dietary fibers and phenolic compounds with significant antioxidant potential that could be used in human nutrition.

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