Utilisation/upgrading of orange peel waste from a biological biorefinery perspective

Torre, Isabel de la; Martín-Domínguez, Víctor; Acedos, Miguel G.; Esteban, Jesús; Santos, Victoria E.; Ladero, Miguel

doi:10.1007/s00253-019-09929-2

Cited by 71 publications

(37 citation statements)

References 99 publications

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“…On a worldwide scale, around 40% of the orange production is utilized in orange juice processing, which generates an enormous amount of wastes (mostly peels) on an average mass of 0.5 kg/kg of raw orange (Smeriglio et al, 2019). However, in the outer layer of the orange peels known as flavedo, within a large number of very small glands, essential oils (EOs) are placed (de la Torre et al, 2019). However, in the outer layer of the orange peels known as flavedo, within a large number of very small glands, essential oils (EOs) are placed (de la Torre et al, 2019).…”

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confidence: 99%

“…Therefore, orange peels as the primary waste have been either discarded which may cause environmental pollutions or used as molasses for animal feed (Gavahian, Chu, & Mousavi Khaneghah, 2019). However, in the outer layer of the orange peels known as flavedo, within a large number of very small glands, essential oils (EOs) are placed (de la Torre et al, 2019). Over the past few years, the biological activities (e.g., antioxidant, anti-inflammatory, antiaging, antibacterial, antifungal, and anti-aflatoxigenic activities) of orange peel EOs have been specified (Barreca et al, 2017;Celano et al, 2019;Hasija, Ibrahim, & Wadia, 2015;Kamal, Ashraf, Hussain, Shahzadi, & Chughtai, 2013) which are strongly related to various constituents of these volatile oils including hydrocarbons, alcohols, esters and aldehydes (Geraci, Di Stefano, Di Martino, Schillaci, & Schicchi, 2017).…”

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confidence: 99%

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Changes in chemical composition and biological activity of essential oil from Thomson navel orange (Citrus sinensis L. Osbeck) peel under freezing, convective, vacuum, and microwave drying methods

Farahmandfar

Tirgarian

Dehghan

et al. 2019

Food Science & Nutrition

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Thomson navel orange peel is a by‐product of citrus processing, which contains high levels of bioactive compounds advantageous to human health, nevertheless due to its high moisture content it is exceedingly perishable. Drying is among the most common preservation methods, which could prolong the plants shelf‐life via reducing their moisture value. Taking this into account, depending on their type and conditions, drying techniques could degrade plant heat‐sensitive metabolites and lead to quality decline. Therefore, the goal of this paper was to investigate the influence of seven drying methods named sun, shade, oven, vacuum oven, microwave, and freeze‐drying with different drying conditions on the physical properties, for example, bulk density and color (L*, a*, b*, ΔE, and browning index (BI)) and essential oil characteristics such as extraction yield, chemical composition, antioxidant (total phenolic content (TPC), DPPH, and FRAP essays), and antimicrobial (MIC and MBC) activities of Thomson peel and determine the superior drying procedure. Results showed that freeze‐dried sample had the highest retention of L* (48.54) and b* (49.00) values, lowest BI (216.11) as well as highest EO extraction yield (6.90%), TPC (60.10 GAE/100 g), FRAP (0.52% at 80 mg/ml), and lowest IC50 (5.00 mg/ml), MIC and MBC compared with other drying treatments. Therefore, it could be inferred that freeze‐drying is the most efficient drying approach in respect of preserving both physical and EO attributes of Thomson peel.

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confidence: 99%

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confidence: 99%

Changes in chemical composition and biological activity of essential oil from Thomson navel orange (Citrus sinensis L. Osbeck) peel under freezing, convective, vacuum, and microwave drying methods

Farahmandfar

Tirgarian

Dehghan

et al. 2019

Food Science & Nutrition

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“…Fruit peels are a rich source of cellulose, hemicellulose, lignin and pectin (Rivas et al 2008 ; Joglekar et al 2019 ). Orange peel is rich in structural polysaccharides, including cellulose (18–20%), hemicellulose (14–16%), pectin (20–22%) and lignin (5–7%) (de la Torre et al 2019 ). Apple residues typically contain 7.2–43.6% cellulose, 4.3–24.4% hemicellulose, 15.2–23.5% lignin and 3.5–14.32% pectin (Dhillon et al 2013 ).…”

Section: Genome Research Reportsmentioning

confidence: 99%

“…Apple residues typically contain 7.2–43.6% cellulose, 4.3–24.4% hemicellulose, 15.2–23.5% lignin and 3.5–14.32% pectin (Dhillon et al 2013 ). Both substrates were chosen because of their abundance as industrial waste around the world (de la Torre et al 2019 ).…”

Section: Genome Research Reportsmentioning

confidence: 99%

Hemicellulosic biomass conversion by Moroccan hot spring Bacillus paralicheniformis CCMM B940 evidenced by glycoside hydrolase activities and whole genome sequencing

et al. 2021

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Thermophilic bacteria, especially from the genus Bacillus, constitute a huge potential source of novel enzymes that could be relevant for biotechnological applications. In this work, we described the cellulose and hemicellulose-related enzymatic activities of the hot spring Bacillus aerius CCMM B940 from the Moroccan Coordinated Collections of Microorganisms (CCMM), and revealed its potential for hemicellulosic biomass utilization. Indeed, B940 was able to degrade complex polysaccharides such as xylan and lichenan and exhibited activity towards carboxymethylcellulose. The strain was also able to grow on agriculture waste such as orange and apple peels as the sole carbon source. Whole-genome sequencing allowed the reclassification of CCMM B940 previously known as B. aerius into Bacillus paralicheniformis since the former species name has been rejected. The draft genome reported here is composed of 38 contigs resulting in a genome of 4,315,004 bp and an average G + C content of 45.87%, and is an important resource for illuminating the molecular mechanisms of carbohydrate metabolism. The annotated genomic sequences evidenced more than 52 genes encoding glycoside hydrolases and pectate lyases belonging to 27 different families of CAZymes that are involved in the degradation of plant cell wall carbohydrates. Genomic predictions in addition to in vitro experiments have revealed broad hydrolytic capabilities of the strain, thus reinforcing its relevance for biotechnology applications.

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“…Despite the difficulties inherent to the high variability of these feedstocks due to diverse geographical distribution and seasonality, they are cheap and abundant (Peters 2006;Balat 2011). However, they are interesting feedstocks for microbial fermentations, as the enzymatic hydrolysis of their component polysaccharides can be economically accomplished to yield fermentable neutral sugars (hexoses and pentoses) and Dgalacturonic acid (D-GalA) (Leijdekkers et al 2013;Cárdenas-Fernández et al 2017;de la Torre et al 2019).…”

Section: Introductionmentioning

confidence: 99%

Valorisation of pectin-rich agro-industrial residues by yeasts: potential and challenges

Martins

Monteiro

Semedo

et al. 2020

Appl Microbiol Biotechnol

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Pectin-rich agro-industrial residues are feedstocks with potential for sustainable biorefineries. They are generated in high amounts worldwide from the industrial processing of fruits and vegetables. The challenges posed to the industrial implementation of efficient bioprocesses are however manyfold and thoroughly discussed in this review paper, mainly at the biological level. The most important yeast cell factory platform for advanced biorefineries is currently Saccharomyces cerevisiae, but this yeast species cannot naturally catabolise the main sugars present in pectin-rich agro-industrial residues hydrolysates, in particular Dgalacturonic acid and L-arabinose. However, there are non-Saccharomyces species (non-conventional yeasts) considered advantageous alternatives whenever they can express highly interesting metabolic pathways, natively assimilate a wider range of carbon sources or exhibit higher tolerance to relevant bioprocess-related stresses. For this reason, the interest in nonconventional yeasts for biomass-based biorefineries is gaining momentum. This review paper focuses on the valorisation of pectin-rich residues by exploring the potential of yeasts that exhibit vast metabolic versatility for the efficient use of the carbon substrates present in their hydrolysates and high robustness to cope with the multiple stresses encountered. The major challenges and the progresses made related with the isolation, selection, sugar catabolism, metabolic engineering and use of nonconventional yeasts and S. cerevisiae-derived strains for the bioconversion of pectin-rich residue hydrolysates are discussed. The reported examples of value-added products synthesised by different yeasts using pectin-rich residues are reviewed. Key Points • Review of the challenges and progresses made on the bioconversion of pectin-rich residues by yeasts. • Catabolic pathways for the main carbon sources present in pectin-rich residues hydrolysates. • Multiple stresses with potential to affect bioconversion productivity. • Yeast metabolic engineering to improve pectin-rich residues bioconversion.

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Utilisation/upgrading of orange peel waste from a biological biorefinery perspective

Cited by 71 publications

References 99 publications

Changes in chemical composition and biological activity of essential oil from Thomson navel orange (Citrus sinensis L. Osbeck) peel under freezing, convective, vacuum, and microwave drying methods

Changes in chemical composition and biological activity of essential oil from Thomson navel orange (Citrus sinensis L. Osbeck) peel under freezing, convective, vacuum, and microwave drying methods

Hemicellulosic biomass conversion by Moroccan hot spring Bacillus paralicheniformis CCMM B940 evidenced by glycoside hydrolase activities and whole genome sequencing

Valorisation of pectin-rich agro-industrial residues by yeasts: potential and challenges

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