scholarly journals Release of Antioxidant Compounds of Zingiber officinale by Ultrasound-Assisted Aqueous Extraction and Evaluation of Their In Vitro Bioaccessibility

2020 ◽  
Vol 10 (14) ◽  
pp. 4987
Author(s):  
Elizabeth Contreras-López ◽  
Araceli Castañeda-Ovando ◽  
Judith Jaimez-Ordaz ◽  
Nelly del Socorro Cruz-Cansino ◽  
Luis Guillermo González-Olivares ◽  
...  
Keyword(s):  
Aqueous Media ◽  
Antioxidant Properties ◽  
Zingiber Officinale ◽  
Total Phenolic ◽  
Antioxidant Compounds ◽  
Ultrasound Assisted Extraction ◽  
Assisted Extraction ◽  
In Vitro Bioaccessibility ◽  
Ultrasound Assisted

Ginger rhizome is widely used in culinary preparations and in traditional medicine. Its benefits are associated with its antioxidant properties related to phenolics and terpenoids compounds, which use to be thermolabile. Ultrasound-assisted extraction has been useful for enhancing the release of thermosensitive compounds present in vegetable tissues. Therefore, the aim of this study was to evaluate the influence of ultrasound-assisted extraction on the release of antioxidants from ginger in aqueous media as well as their in vitro bioaccessibility. Central composite rotatable design was applied to obtain the optimal conditions for the extraction; the variables studied were amplitude (80–90%) and temperature (30–50 °C). Total phenolic content, antioxidant capacity (DPPH•, ABTS•+ and FRAP), and in vitro bioaccessibility were determined. Amplitude was the main parameter influencing the extraction of antioxidants. The ginger aqueous extracts showed a bioaccessibility of around 30%. The release of antioxidant compounds from ginger by ultrasound-assisted extraction avoids the use of high temperatures and solvents commonly used in conventional extraction methods.

scholarly journals Green-Sustainable Recovery of Phenolic and Antioxidant Compounds from Industrial Chestnut Shells Using Ultrasound-Assisted Extraction: Optimization and Evaluation of Biological Activities In Vitro

Antioxidants ◽  
2020 ◽  
Vol 9 (3) ◽  
pp. 267
Author(s):  
Fátima Lameirão ◽  
Diana Pinto ◽  
Elsa F. Vieira ◽  
Andreia F. Peixoto ◽  
Cristina Freire ◽  
...  
Keyword(s):  
Biological Activities ◽  
Radical Scavenging ◽  
Raw Material ◽  
Total Phenolic ◽  
Antioxidant Compounds ◽  
Ultrasound Assisted Extraction ◽  
Antioxidant Power ◽  
Assisted Extraction ◽  
Ultrasound Assisted

Chestnut processing industry generates large amounts of by-products, including leaves, burs and shells that are a source of bioactive compounds. The purpose of this study was to establish an ultrasound-assisted extraction (UAE) of phenolic and antioxidant compounds from industrial chestnut shells. A central composite design (CCD) was conducted to analyze the effects of time (4–46 min) and temperature (34–76 °C) in the antioxidant activity (2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid (ABTS), 2,2-diphenyl-1-picrylhydrazyl (DPPH), and ferric reducing antioxidant power (FRAP)) and total phenolic compounds (TPC) of chestnut shells extracts. The optimal extraction conditions were obtained at 70 °C for 40 min. The optimal extract was characterized regarding phenolic profile, radical scavenging capacity, and effects on intestinal and dermal cell lines. The optimal extract revealed high amounts of ellagic acid (40.4 µg/mg dw), followed by caffeic acid derivative (15.4 µg/mg dw) and epigallocatechin (15.3 µg/mg dw). Indeed, the extract exhibited the highest scavenging efficiencies against NO● (IC50 = 0.1 µg/mL) and HOCl (IC50 = 0.7 µg/mL) and did not conducted to a decrease on HaCaT and HFF-1 viability up to 100 μg/mL. Oppositely, a decrease on Caco-2 and HT29-MTX viability was observed. This study suggests that UAE could be a sustainable option to valorize chestnut shells as raw material for different industries.

scholarly journals In vitro and in vivo antioxidant properties of bioactive compounds from green propolis obtained by ultrasound-assisted extraction

2019 ◽  
Vol 4 ◽  
pp. 100054 ◽  
Author(s):  
Renata Iara Cavalaro ◽  
Richtier Gonçalves da Cruz ◽  
Sebastien Dupont ◽  
Juliana Maria Leite Nóbrega de Moura Bell ◽  
Thais Maria Ferreira de Souza Vieira
Keyword(s):  
Bioactive Compounds ◽  
Antioxidant Properties ◽  
Ultrasound Assisted Extraction ◽  
Assisted Extraction ◽  
Ultrasound Assisted

scholarly journals Phenol Profiling and Nutraceutical Potential of Lycium spp. Leaf Extracts Obtained with Ultrasound and Microwave Assisted Techniques

Antioxidants ◽  
2019 ◽  
Vol 8 (8) ◽  
pp. 260 ◽  
Author(s):  
Luna Pollini ◽  
Rachele Rocchi ◽  
Lina Cossignani ◽  
Jordi Mañes ◽  
Dario Compagnone ◽  
...  
Keyword(s):  
Antioxidant Properties ◽  
In Vitro Assays ◽  
Array Detector ◽  
Antioxidant Compounds ◽  
Ultrasound Assisted Extraction ◽  
Leaf Extracts ◽  
Phenol Compounds ◽  
Microwave Assisted ◽  
Assisted Extraction

In recent years, agricultural and industrial residues have attracted a lot of interest in the recovery of phytochemicals used in the food, pharmaceutical, and cosmetic industries. In this paper, a study on the recovery of phenol compounds from Lycium spp. leaves is presented. Ultrasound-assisted extraction (UAE) and microwave-assisted extraction (MAE) have been used with alcoholic and hydroalcoholic solvents. Methanolic UAE was the most successful technique for extracting phenols from Lycium leaves, and we used on leaves from L. barbarum and L. chinense cultivated in Italy. The extracts were then characterized as regards to the antioxidant properties by in vitro assays and the phenol profiling by a high performance liquid chromatography-diode array detector (HPLC-DAD). Chlorogenic acid and rutin were the main phenol compounds, but considerable differences have been observed between the samples of the two Lycium species. For example, cryptochlorogenic acid was found only in L. barbarum samples, while quercetin-3-O-rutinoside-7-O-glucoside and quercetin-3-O-sophoroside-7-O-rhamnoside only in L. chinense leaves. Finally, multivariate statistical analysis techniques applied to the phenol content allowed us to differentiate samples from different Lycium spp. The results of this study confirm that the extraction is a crucial step in the analytical procedure and show that Lycium leaves represent an interesting source of antioxidant compounds, with potential use in the nutraceutical field.

Ultrasound-assisted extraction of carotenoids from mango ( Mangifera indica L. ‘Ataulfo’) by-products on in vitro bioaccessibility

2018 ◽  
Vol 21 ◽  
pp. 125-131 ◽  
Author(s):  
Gilberto Mercado-Mercado ◽  
Efigenia Montalvo-González ◽  
Gustavo A. González-Aguilar ◽  
Emilio Alvarez-Parrilla ◽  
Sonia G. Sáyago-Ayerdi
Keyword(s):  
Mangifera Indica ◽  
Ultrasound Assisted Extraction ◽  
Assisted Extraction ◽  
In Vitro Bioaccessibility ◽  
Ultrasound Assisted ◽  
By Products

scholarly journals Ultrasound-Assisted Extraction as a First Step in a Biorefinery Strategy for Valorisation of Extracted Olive Pomace

Energies ◽  
2019 ◽  
Vol 12 (14) ◽  
pp. 2679 ◽  
Author(s):  
José Carlos Martínez-Patiño ◽  
Irene Gómez-Cruz ◽  
Inmaculada Romero ◽  
Beatriz Gullón ◽  
Encarnación Ruiz ◽  
...  
Keyword(s):  
Ethanol Concentration ◽  
Total Phenolic ◽  
Natural Food ◽  
Antioxidant Compounds ◽  
Olive Pomace ◽  
Ultrasound Assisted Extraction ◽  
Antioxidant Power ◽  
Mediterranean Countries ◽  
Assisted Extraction ◽  
Ultrasound Assisted

Currently, interest in finding new feedstock as sources of natural food antioxidants is growing. The extracted olive pomace (EOP), which is an agro-industrial residue from the olive pomace extracting industries, is generated yearly in big amounts, mainly in the Mediterranean countries. EOP was subjected to an ultrasound assisted extraction with ethanol-water mixtures. The effect of main parameters, such as ethanol concentration (30–70% v/v), ultrasound amplitude (20–80%), and extraction time (5–15 min), on the extraction of antioxidant compounds was evaluated according to a Box–Behnken experimental design. The antioxidant capacity of the resulting extracts was determined by measuring their content in total phenolic compounds (TPC) and flavonoids (TFC), as well as their antioxidant activity by DPPH, ferric reducing antioxidant power (FRAP), and ABTS assays. Considering the simultaneous maximization of these five responses, the optimal conditions were found to be 43.2% ethanol concentration, 70% amplitude, and 15 min. The ultrasound assisted extraction of EOP under these optimized conditions yielded an extract with a phenolic and flavonoid content (per gram of EOP) of 57.5 mg gallic acid equivalent (GAE) and 126.9 mg rutin equivalent (RE), respectively. Likewise, the values for DPPH, ABTS, and FRAP assay (per gram of EOP) of 56.7, 139.1, and 64.9 mg Trolox equivalent, respectively were determined in the optimized extract.

scholarly journals Ultrasound-assisted extraction of protein from Bombay locusts and its impact on functional and antioxidative properties

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Passakorn Kingwascharapong ◽  
Manat Chaijan ◽  
Supatra Karnjanapratum
Keyword(s):  
Antioxidant Properties ◽  
Radical Scavenging ◽  
Surface Hydrophobicity ◽  
Molecular Characteristics ◽  
Ultrasound Assisted Extraction ◽  
Antioxidative Properties ◽  
Assisted Extraction ◽  
Ultrasound Assisted ◽  
Nonessential Amino Acids ◽  
The Impact

AbstractImpact of ultrasound-assisted process (UAP) on yield, functional properties, antioxidant properties and molecular characteristics of protein extracted from Bombay locusts (BL) (Patanga succinta L.) was studied. Different conditions of UAP were implemented for different amplitudes (40–60%) and times (10–30 min) during aqueous extraction. Notably, UAP could enhance yield and protein recovery, compared with those from typical process (TP) (continuously stirred at 100 rpm at room temperature for 1 h). UAP conditions used governed the change of surface hydrophobicity and free α-amino content of BL. UAP could improve solubility of BL, especially at pH levels higher than 2. UAP had no significant (p > 0.05) detrimental effects on foaming capacity and stability of BL. Nevertheless, UAP, particularly at 50–60% amplitudes, affected the emulsion activity and stability of BL. UAP provided BL with high radical scavenging activities and good electron donating ability, especially that from 60% amplitude for 20 min (UAP-60/20). UAP-60/20 showed the impact on change of isoelectric point and molecular characteristic monitored by Fourier transform infrared (FTIR) of BL, compared to those from TP. In addition, BL was also an excellent source of both essential and nonessential amino acids. Therefore, UAP potentially enhanced BL extraction efficiency, resulting the BL with good functional and antioxidative properties.

scholarly journals Mathematical Modelling of Ultrasound-Assisted Extraction Kinetics of Bioactive Compounds from Artichoke By-Products

Foods ◽  
2021 ◽  
Vol 10 (5) ◽  
pp. 931
Author(s):  
Cristina Reche ◽  
Carmen Rosselló ◽  
Mónica M. Umaña ◽  
Valeria Eim ◽  
Susana Simal
Keyword(s):  
Power Density ◽  
Bioactive Compounds ◽  
Extraction Yield ◽  
Total Phenolic ◽  
Model Parameters ◽  
Ultrasound Assisted Extraction ◽  
Yield Curves ◽  
Assisted Extraction ◽  
Ultrasound Assisted ◽  
Ultrasound Power

Valorization of an artichoke by-product, rich in bioactive compounds, by ultrasound-assisted extraction, is proposed. The extraction yield curves of total phenolic content (TPC) and chlorogenic acid content (CAC) in 20% ethanol (v/v) with agitation (100 rpm) and ultrasound (200 and 335 W/L) were determined at 25, 40, and 60 °C. A mathematical model considering simultaneous diffusion and convection is proposed to simulate the extraction curves and to quantify both temperature and ultrasound power density effects in terms of the model parameters variation. The effective diffusion coefficient exhibited temperature dependence (72% increase for TPC from 25 °C to 60 °C), whereas the external mass transfer coefficient and the equilibrium extraction yield depended on both temperature (72% and 90% increases for TPC from 25 to 60 °C) and ultrasound power density (26 and 51% increases for TPC from 0 (agitation) to 335 W/L). The model allowed the accurate curves simulation, the average mean relative error being 5.3 ± 2.6%. Thus, the need of considering two resistances in series to satisfactorily simulate the extraction yield curves could be related to the diffusion of the bioactive compound from inside the vegetable cells toward the intercellular volume and from there, to the liquid phase.

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.

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