Optimization of ultrasound‐assisted extraction of grape‐seed oil to enhance process yield and minimize free radical formation

BACKGROUND Grape seeds are a relatively abundant source of oil and bioactive compounds. To use this byproduct, the current work aimed to optimize the ultrasound‐assisted extraction (UAE) of grape‐seed oil to obtain greater process yield and minimize free radical formation in the oil. RESULTS The opt...

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Published in:Journal of the science of food and agriculture Vol. 98; no. 13; pp. 5019 - 5026
Main Authors: Böger, Bruna R, Salviato, Aroldo, Valezi, Daniel F, Di Mauro, Eduardo, Georgetti, Sandra R, Kurozawa, Louise E
Format: Journal Article
Language:English
Published: Chichester, UK John Wiley & Sons, Ltd 01-10-2018
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Abstract BACKGROUND Grape seeds are a relatively abundant source of oil and bioactive compounds. To use this byproduct, the current work aimed to optimize the ultrasound‐assisted extraction (UAE) of grape‐seed oil to obtain greater process yield and minimize free radical formation in the oil. RESULTS The optimal condition was 15 °C with an ultrasonic wave amplitude of 42 µm, leading to a process yield of 82.9% and content of free radicals of 14.7 × 1017 kg−1 and 3.4 × 1018 kg−1 for samples stored for 7 and 30 days, respectively. No significant differences in fatty acid composition and acidity and iodine values were observed between samples. The oil obtained by ultrasound had greater phenolic compound content and antioxidant activity by ferric reduction than the control sample (without ultrasound application). However, higher content of free radicals and peroxide value was observed. CONCLUSION Sonication improved extraction yield when compared to the process without ultrasound application. Moreover, UAE favored the extraction of phenolic compounds. As it enhanced process yield with the minimum formation of free radicals, UAE is a promising oil‐extraction technology. © 2018 Society of Chemical Industry
AbstractList BACKGROUNDGrape seeds are a relatively abundant source of oil and bioactive compounds. To use this byproduct, the current work aimed to optimize the ultrasound‐assisted extraction (UAE) of grape‐seed oil to obtain greater process yield and minimize free radical formation in the oil.RESULTSThe optimal condition was 15 °C with an ultrasonic wave amplitude of 42 µm, leading to a process yield of 82.9% and content of free radicals of 14.7 × 1017 kg−1 and 3.4 × 1018 kg−1 for samples stored for 7 and 30 days, respectively. No significant differences in fatty acid composition and acidity and iodine values were observed between samples. The oil obtained by ultrasound had greater phenolic compound content and antioxidant activity by ferric reduction than the control sample (without ultrasound application). However, higher content of free radicals and peroxide value was observed.CONCLUSIONSonication improved extraction yield when compared to the process without ultrasound application. Moreover, UAE favored the extraction of phenolic compounds. As it enhanced process yield with the minimum formation of free radicals, UAE is a promising oil‐extraction technology. © 2018 Society of Chemical Industry
Grape seeds are a relatively abundant source of oil and bioactive compounds. To use this byproduct, the current work aimed to optimize the ultrasound-assisted extraction (UAE) of grape-seed oil to obtain greater process yield and minimize free radical formation in the oil. The optimal condition was 15 °C with an ultrasonic wave amplitude of 42 µm, leading to a process yield of 82.9% and content of free radicals of 14.7 × 10 kg and 3.4 × 10 kg for samples stored for 7 and 30 days, respectively. No significant differences in fatty acid composition and acidity and iodine values were observed between samples. The oil obtained by ultrasound had greater phenolic compound content and antioxidant activity by ferric reduction than the control sample (without ultrasound application). However, higher content of free radicals and peroxide value was observed. Sonication improved extraction yield when compared to the process without ultrasound application. Moreover, UAE favored the extraction of phenolic compounds. As it enhanced process yield with the minimum formation of free radicals, UAE is a promising oil-extraction technology. © 2018 Society of Chemical Industry.
BACKGROUNDGrape seeds are a relatively abundant source of oil and bioactive compounds. To use this byproduct, the current work aimed to optimize the ultrasound-assisted extraction (UAE) of grape-seed oil to obtain greater process yield and minimize free radical formation in the oil.RESULTSThe optimal condition was 15 °C with an ultrasonic wave amplitude of 42 µm, leading to a process yield of 82.9% and content of free radicals of 14.7 × 1017 kg-1 and 3.4 × 1018 kg-1 for samples stored for 7 and 30 days, respectively. No significant differences in fatty acid composition and acidity and iodine values were observed between samples. The oil obtained by ultrasound had greater phenolic compound content and antioxidant activity by ferric reduction than the control sample (without ultrasound application). However, higher content of free radicals and peroxide value was observed.CONCLUSIONSonication improved extraction yield when compared to the process without ultrasound application. Moreover, UAE favored the extraction of phenolic compounds. As it enhanced process yield with the minimum formation of free radicals, UAE is a promising oil-extraction technology. © 2018 Society of Chemical Industry.
BACKGROUND Grape seeds are a relatively abundant source of oil and bioactive compounds. To use this byproduct, the current work aimed to optimize the ultrasound‐assisted extraction (UAE) of grape‐seed oil to obtain greater process yield and minimize free radical formation in the oil. RESULTS The optimal condition was 15 °C with an ultrasonic wave amplitude of 42 µm, leading to a process yield of 82.9% and content of free radicals of 14.7 × 1017 kg−1 and 3.4 × 1018 kg−1 for samples stored for 7 and 30 days, respectively. No significant differences in fatty acid composition and acidity and iodine values were observed between samples. The oil obtained by ultrasound had greater phenolic compound content and antioxidant activity by ferric reduction than the control sample (without ultrasound application). However, higher content of free radicals and peroxide value was observed. CONCLUSION Sonication improved extraction yield when compared to the process without ultrasound application. Moreover, UAE favored the extraction of phenolic compounds. As it enhanced process yield with the minimum formation of free radicals, UAE is a promising oil‐extraction technology. © 2018 Society of Chemical Industry
Author Böger, Bruna R
Kurozawa, Louise E
Salviato, Aroldo
Georgetti, Sandra R
Valezi, Daniel F
Di Mauro, Eduardo
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  surname: Kurozawa
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Issue 13
Keywords electron spin resonance spectroscopy
fatty acids
antioxidant capacity
optimization
sonication
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Snippet BACKGROUND Grape seeds are a relatively abundant source of oil and bioactive compounds. To use this byproduct, the current work aimed to optimize the...
Grape seeds are a relatively abundant source of oil and bioactive compounds. To use this byproduct, the current work aimed to optimize the ultrasound-assisted...
BACKGROUNDGrape seeds are a relatively abundant source of oil and bioactive compounds. To use this byproduct, the current work aimed to optimize the...
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SubjectTerms Acidity
antioxidant capacity
Antioxidants
Bioactive compounds
Crop yield
electron spin resonance spectroscopy
Fatty acid composition
Fatty acids
Fatty Acids - analysis
Food Handling - methods
Free radicals
Free Radicals - analysis
Grapes
Grapeseed oil
Iodine
Oil
Oilseeds
Optimization
Organic chemistry
Peroxide
Phenolic compounds
Phenols
Plant Extracts - analysis
Plant Extracts - isolation & purification
Plant Oils - analysis
Plant Oils - isolation & purification
Seeds
Seeds - chemistry
Sonication
Ultrasonic imaging
Ultrasonics - methods
Ultrasound
Vitis - chemistry
Title Optimization of ultrasound‐assisted extraction of grape‐seed oil to enhance process yield and minimize free radical formation
URI https://onlinelibrary.wiley.com/doi/abs/10.1002%2Fjsfa.9036
https://www.ncbi.nlm.nih.gov/pubmed/29603247
https://www.proquest.com/docview/2097382552
https://search.proquest.com/docview/2020490255
Volume 98
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