OrangerV1, France, Analysis, bibRecord, 000026

Bio-refinery of orange peels waste: a new concept based on integrated green and solvent free extraction processes using ultrasound and microwave techniques to obtain essential oil, polyphenols and pectin.

Identifieur interne : 000026 ( France/Analysis ); précédent : 000025; suivant : 000027

Bio-refinery of orange peels waste: a new concept based on integrated green and solvent free extraction processes using ultrasound and microwave techniques to obtain essential oil, polyphenols and pectin.

Auteurs : Meryem Boukroufa [Algérie] ; Chahrazed Boutekedjiret [Algérie] ; Loïc Petigny [France] ; Njara Rakotomanomana [France] ; Farid Chemat [France]

Source :

Ultrasonics sonochemistry [ 1873-2828 ] ; 2015.

RBID : pubmed:25435398

English descriptors

KwdEn :
- Chemical Fractionation (methods), Citrus sinensis (chemistry), Food Industry, Industrial Waste, Pectins (chemistry), Plant Oils (chemistry), Polyphenols (chemistry), Ultrasonic Waves.
MESH :
- chemical , chemistry : Pectins, Plant Oils, Polyphenols.
- chemical : Industrial Waste.
- chemistry : Citrus sinensis.
- methods : Chemical Fractionation.
- Food Industry, Ultrasonic Waves.

Abstract

In this study, extraction of essential oil, polyphenols and pectin from orange peel has been optimized using microwave and ultrasound technology without adding any solvent but only "in situ" water which was recycled and used as solvent. The essential oil extraction performed by Microwave Hydrodiffusion and Gravity (MHG) was optimized and compared to steam distillation extraction (SD). No significant changes in yield were noticed: 4.22 ± 0.03% and 4.16 ± 0.05% for MHG and SD, respectively. After extraction of essential oil, residual water of plant obtained after MHG extraction was used as solvent for polyphenols and pectin extraction from MHG residues. Polyphenols extraction was performed by ultrasound-assisted extraction (UAE) and conventional extraction (CE). Response surface methodology (RSM) using central composite designs (CCD) approach was launched to investigate the influence of process variables on the ultrasound-assisted extraction (UAE). The statistical analysis revealed that the optimized conditions of ultrasound power and temperature were 0.956 W/cm(2) and 59.83°C giving a polyphenol yield of 50.02 mgGA/100 g dm. Compared with the conventional extraction (CE), the UAE gave an increase of 30% in TPC yield. Pectin was extracted by conventional and microwave assisted extraction. This technique gives a maximal yield of 24.2% for microwave power of 500 W in only 3 min whereas conventional extraction gives 18.32% in 120 min. Combination of microwave, ultrasound and the recycled "in situ" water of citrus peels allow us to obtain high added values compounds in shorter time and managed to make a closed loop using only natural resources provided by the plant which makes the whole process intensified in term of time and energy saving, cleanliness and reduced waste water.

DOI: 10.1016/j.ultsonch.2014.11.015
PubMed: 25435398

Affiliations:

Links to Exploration step

pubmed:25435398

Le document en format XML

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<author><name sortKey="Boukroufa, Meryem" sort="Boukroufa, Meryem" uniqKey="Boukroufa M" first="Meryem" last="Boukroufa">Meryem Boukroufa</name>
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<author><name sortKey="Boukroufa, Meryem" sort="Boukroufa, Meryem" uniqKey="Boukroufa M" first="Meryem" last="Boukroufa">Meryem Boukroufa</name>
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<author><name sortKey="Boutekedjiret, Chahrazed" sort="Boutekedjiret, Chahrazed" uniqKey="Boutekedjiret C" first="Chahrazed" last="Boutekedjiret">Chahrazed Boutekedjiret</name>
<affiliation wicri:level="1"><nlm:affiliation>Laboratoire des Sciences et Techniques de l'Environnement (LSTE), Ecole Nationale Polytechnique, 10 Avenue Hacène Badi, BP 182, El Harrach, 16200 Alger, Algeria. Electronic address: chahrazed.boutekedjiret@g.enp.edu.dz.</nlm:affiliation>
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<author><name sortKey="Petigny, Loic" sort="Petigny, Loic" uniqKey="Petigny L" first="Loïc" last="Petigny">Loïc Petigny</name>
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<front><div type="abstract" xml:lang="en">In this study, extraction of essential oil, polyphenols and pectin from orange peel has been optimized using microwave and ultrasound technology without adding any solvent but only "in situ" water which was recycled and used as solvent. The essential oil extraction performed by Microwave Hydrodiffusion and Gravity (MHG) was optimized and compared to steam distillation extraction (SD). No significant changes in yield were noticed: 4.22 ± 0.03% and 4.16 ± 0.05% for MHG and SD, respectively. After extraction of essential oil, residual water of plant obtained after MHG extraction was used as solvent for polyphenols and pectin extraction from MHG residues. Polyphenols extraction was performed by ultrasound-assisted extraction (UAE) and conventional extraction (CE). Response surface methodology (RSM) using central composite designs (CCD) approach was launched to investigate the influence of process variables on the ultrasound-assisted extraction (UAE). The statistical analysis revealed that the optimized conditions of ultrasound power and temperature were 0.956 W/cm(2) and 59.83°C giving a polyphenol yield of 50.02 mgGA/100 g dm. Compared with the conventional extraction (CE), the UAE gave an increase of 30% in TPC yield. Pectin was extracted by conventional and microwave assisted extraction. This technique gives a maximal yield of 24.2% for microwave power of 500 W in only 3 min whereas conventional extraction gives 18.32% in 120 min. Combination of microwave, ultrasound and the recycled "in situ" water of citrus peels allow us to obtain high added values compounds in shorter time and managed to make a closed loop using only natural resources provided by the plant which makes the whole process intensified in term of time and energy saving, cleanliness and reduced waste water.</div>
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Bio-refinery of orange peels waste: a new concept based on integrated green and solvent free extraction processes using ultrasound and microwave techniques to obtain essential oil, polyphenols and pectin.

Bio-refinery of orange peels waste: a new concept based on integrated green and solvent free extraction processes using ultrasound and microwave techniques to obtain essential oil, polyphenols and pectin.

Source :

English descriptors

Abstract

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