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Effect of acoustic frequency and power density on the aqueous ultrasonic-assisted extraction of grape pomace (Vitis vinifera L.) - a response surface approach.
Ultrason Sonochem. 2014 Nov; 21(6):2176-84.US

Abstract

Aqueous ultrasound-assisted extraction (UAE) of grape pomace was investigated by Response Surface Methodology (RSM) to evaluate the effect of acoustic frequency (40, 80, 120kHz), ultrasonic power density (50, 100, 150W/L) and extraction time (5, 15, 25min) on total phenolics, total flavonols and antioxidant capacity. All the process variables showed a significant effect on the aqueous UAE of grape pomace (p<0.05). The Box-Behnken Design (BBD) generated satisfactory mathematical models which accurately explain the behavior of the system; allowing to predict both the extraction yield of phenolic and flavonol compounds, and also the antioxidant capacity of the grape pomace extracts. The optimal UAE conditions for all response factors were a frequency of 40kHz, a power density of 150W/L and 25min of extraction time. Under these conditions, the aqueous UAE would achieve a maximum of 32.31mg GA/100g fw for total phenolics and 2.04mg quercetin/100g fw for total flavonols. Regarding the antioxidant capacity, the maximum predicted values were 53.47 and 43.66mg Trolox/100g fw for CUPRAC and FRAP assays, respectively. When comparing with organic UAE, in the present research, from 12% to 38% of total phenolic bibliographic values were obtained, but using only water as the extraction solvent, and applying lower temperatures and shorter extraction times. To the best of the authors' knowledge, no studies specifically addressing the optimization of both acoustic frequency and power density during aqueous-UAE of plant materials have been previously published.

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Authors+Show Affiliations

González-Centeno MR
Department of Chemistry, University of the Balearic Islands, Ctra Valldemossa, Km 7.5, 07122 Palma de Mallorca, Spain. Electronic address: reyes.gonzalez.centeno@gmail.com.
Knoerzer K
CSIRO Animal, Food and Health Sciences, 671 Sneydes Road, Werribee, VIC 3030, Australia.
Sabarez H
CSIRO Animal, Food and Health Sciences, 671 Sneydes Road, Werribee, VIC 3030, Australia.
Simal S
Department of Chemistry, University of the Balearic Islands, Ctra Valldemossa, Km 7.5, 07122 Palma de Mallorca, Spain.
Rosselló C
Department of Chemistry, University of the Balearic Islands, Ctra Valldemossa, Km 7.5, 07122 Palma de Mallorca, Spain.
Femenia A
Department of Chemistry, University of the Balearic Islands, Ctra Valldemossa, Km 7.5, 07122 Palma de Mallorca, Spain.

MeSH

AntioxidantsChemical FractionationFlavonolsModels, TheoreticalPhenolsSolventsSonicationTime FactorsVitisWater

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

24548543

Citation

González-Centeno, María Reyes, et al. "Effect of Acoustic Frequency and Power Density On the Aqueous Ultrasonic-assisted Extraction of Grape Pomace (Vitis Vinifera L.) - a Response Surface Approach." Ultrasonics Sonochemistry, vol. 21, no. 6, 2014, pp. 2176-84.
González-Centeno MR, Knoerzer K, Sabarez H, et al. Effect of acoustic frequency and power density on the aqueous ultrasonic-assisted extraction of grape pomace (Vitis vinifera L.) - a response surface approach. Ultrason Sonochem. 2014;21(6):2176-84.
González-Centeno, M. R., Knoerzer, K., Sabarez, H., Simal, S., Rosselló, C., & Femenia, A. (2014). Effect of acoustic frequency and power density on the aqueous ultrasonic-assisted extraction of grape pomace (Vitis vinifera L.) - a response surface approach. Ultrasonics Sonochemistry, 21(6), 2176-84. https://doi.org/10.1016/j.ultsonch.2014.01.021
González-Centeno MR, et al. Effect of Acoustic Frequency and Power Density On the Aqueous Ultrasonic-assisted Extraction of Grape Pomace (Vitis Vinifera L.) - a Response Surface Approach. Ultrason Sonochem. 2014;21(6):2176-84. PubMed PMID: 24548543.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Effect of acoustic frequency and power density on the aqueous ultrasonic-assisted extraction of grape pomace (Vitis vinifera L.) - a response surface approach. AU - González-Centeno,María Reyes, AU - Knoerzer,Kai, AU - Sabarez,Henry, AU - Simal,Susana, AU - Rosselló,Carmen, AU - Femenia,Antoni, Y1 - 2014/02/05/ PY - 2013/11/28/received PY - 2014/01/17/revised PY - 2014/01/23/accepted PY - 2014/2/20/entrez PY - 2014/2/20/pubmed PY - 2015/12/31/medline KW - Antioxidant capacity KW - Grape pomace byproducts KW - Response Surface Methodology KW - Total flavonols KW - Total phenolics KW - Ultrasound-assisted extraction SP - 2176 EP - 84 JF - Ultrasonics sonochemistry JO - Ultrason Sonochem VL - 21 IS - 6 N2 - Aqueous ultrasound-assisted extraction (UAE) of grape pomace was investigated by Response Surface Methodology (RSM) to evaluate the effect of acoustic frequency (40, 80, 120kHz), ultrasonic power density (50, 100, 150W/L) and extraction time (5, 15, 25min) on total phenolics, total flavonols and antioxidant capacity. All the process variables showed a significant effect on the aqueous UAE of grape pomace (p<0.05). The Box-Behnken Design (BBD) generated satisfactory mathematical models which accurately explain the behavior of the system; allowing to predict both the extraction yield of phenolic and flavonol compounds, and also the antioxidant capacity of the grape pomace extracts. The optimal UAE conditions for all response factors were a frequency of 40kHz, a power density of 150W/L and 25min of extraction time. Under these conditions, the aqueous UAE would achieve a maximum of 32.31mg GA/100g fw for total phenolics and 2.04mg quercetin/100g fw for total flavonols. Regarding the antioxidant capacity, the maximum predicted values were 53.47 and 43.66mg Trolox/100g fw for CUPRAC and FRAP assays, respectively. When comparing with organic UAE, in the present research, from 12% to 38% of total phenolic bibliographic values were obtained, but using only water as the extraction solvent, and applying lower temperatures and shorter extraction times. To the best of the authors' knowledge, no studies specifically addressing the optimization of both acoustic frequency and power density during aqueous-UAE of plant materials have been previously published. SN - 1873-2828 UR - https://www.unboundmedicine.com/medline/citation/24548543/Effect_of_acoustic_frequency_and_power_density_on_the_aqueous_ultrasonic_assisted_extraction_of_grape_pomace__Vitis_vinifera_L_____a_response_surface_approach_ DB - PRIME DP - Unbound Medicine ER -