A Green Valorisation Approach Using Microwaves and Supercritical CO2 for High-Added Value Ingredients from Mandarin (Citrus deliciosa Tenore) Leaf Waste

Ateş, Fadime; Şahın, Selin; İlbay, Zeynep; Kırbaşlar, Ş. İsmail

doi:10.1007/s12649-017-0074-z

Cited by 23 publications

(5 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Microwave hydrodiffusion and gravity (MHG) technique has been instead applied to mandarin leaves, under RSM optimized conditions involving 275 W microwave power, 2 g mandarin leaf and 45 s. TPC and total flavonoid content (TFC) values of ca. 17 mg/g GAE and 1.7 mg/g of catechin equivalents (CE) were determined, which, although lower compared to those obtained by supercritical fluid extraction (SFE), well-correlated with the antioxidant capacity (139).…”

Section: Orange and Lemon Byproductsmentioning

confidence: 84%

Bioactive Phenolic Compounds From Agri-Food Wastes: An Update on Green and Sustainable Extraction Methodologies

et al. 2020

View full text Add to dashboard Cite

Phenolic compounds are broadly represented in plant kingdom, and their occurrence in easily accessible low-cost sources like wastes from agri-food processing have led in the last decade to an increase of interest in their recovery and further exploitation. Indeed, most of these compounds are endowed with beneficial properties to human health (e.g., in the prevention of cancer and cardiovascular diseases), that may be largely ascribed to their potent antioxidant and scavenging activity against reactive oxygen species generated in settings of oxidative stress and responsible for the onset of several inflammatory and degenerative diseases. Apart from their use as food supplements or as additives in functional foods, natural phenolic compounds have become increasingly attractive also from a technological point of view, due to their possible exploitation in materials science. Several extraction methodologies have been reported for the recovery of phenolic compounds from agri-food wastes mostly based on the use of organic solvents such as methanol, ethanol, or acetone. However, there is an increasing need for green and sustainable approaches leading to phenolic-rich extracts with low environmental impact. This review addresses the most promising and innovative methodologies for the recovery of functional phenolic compounds from waste materials that have appeared in the recent literature. In particular, extraction procedures based on the use of green technologies (supercritical fluid, microwaves, ultrasounds) as well as of green solvents such as deep eutectic solvents (DES) are surveyed.

show abstract

Section: Orange and Lemon Byproductsmentioning

confidence: 84%

Bioactive Phenolic Compounds From Agri-Food Wastes: An Update on Green and Sustainable Extraction Methodologies

et al. 2020

View full text Add to dashboard Cite

show abstract

“…The leaves contain a large amount of chlorophyll, and when they are thick and fleshy, they present large quantities of waxes and resins. In recent years, some researchers have worked in the extraction of flavonoids from some leaves, for example, from green tea ( Camellia sinensis ) [ 21 ], mandarin ( Citrus deliciosa Tenore) [ 22 ], and Cecropia species [ 23 ].…”

Section: Natural Sources Of Flavonoidsmentioning

confidence: 99%

Environmentally Friendly Methods for Flavonoid Extraction from Plant Material: Impact of Their Operating Conditions on Yield and Antioxidant Properties

Luna

Ramírez-Garza

Saldivar

2020

The Scientific World Journal

115

View full text Add to dashboard Cite

The flavonoids are compounds synthesized by plants, and they have properties such as antioxidant, anticancer, anti-inflammatory, and antibacterial, among others. One of the most important bioactive properties of flavonoids is their antioxidant effect. Synthetic antioxidants have side toxic effects whilst natural antioxidants, such as flavonoids from natural sources, have relatively low toxicity. Therefore, it is important to incorporate flavonoids derived from natural sources in several products such as foods, cosmetics, and drugs. For this reason, there is currently a need to extract flavonoids from plant resources. In this review are described the most important parameters involved in the extraction of flavonoids by unconventional methods such as ultrasound, pressurized liquid extraction, mechanochemical, high hydrostatic pressure, supercritical fluid, negative pressure cavitation, intensification of vaporization by decompression to the vacuum, microwave, infrared, pulsed electric field, high-voltage electrical discharges, and enzyme-assisted extraction. There are no unified operation conditions to achieve high yields and purity. Notwithstanding, progress has been achieved in the development of more advanced and environmentally friendly methods of extraction. Although in literature are found important advances, a complete understanding of the extraction process in each of the unconventional techniques is needed to determine the thermodynamic and kinetic mechanisms that govern each of the techniques.

show abstract

“…Singanusong et al also found the antioxidant capacity of mandarin peels by various methods, and analyzed their total biophenolic substances [10]. Ateş et al extracted phenolic antioxidants by various advanced separation methods (microwave-assisted extraction and supercritical-CO 2 extraction), using mandarin peel as a raw material [11]. Lemon peel was also used as raw material for pectin and flavonoid production [3,4].…”

Section: Introductionmentioning

confidence: 99%

Optimization of Bioactive Substances in the Wastes of Some Selective Mediterranean Crops

et al. 2019

Self Cite

View full text Add to dashboard Cite

Production of added products from industrial byproducts is a challenge for the current natural product industry and the extraction field more generally. Therefore, the aim of this study is to valorize the selected Mediterranean crops that can be applied as antioxidants, natural chelating agents, or even as biosolvents or biofuels after special treatment. In this study, the wastes of popular Mediterranean plants were extracted via homogenizer-assisted extraction (HAE) by applying response surface methodology (RSM) to examine the effects of process parameters on the total biophenolic contents (TBCs) of their residues. Box–Behnken design model equations calculated for each system were found significant (p < 0.0001) with an adequate value of determination coefficient (R2). Olive leaf had the highest TBC content (58.62 mg-GAE/g-DW with 0.1 g sample, 42.5% ethanol at 6522.2 rpm for 2 min), followed by mandarin peel (27.79 mg-GAE/g-DW with 0.1 g sample, 34.24% ethanol at 8772 rpm for 1.99 min), grapefruit peel (21.12 mg-GAE/g-DW with 0.1 g sample, 42.33% ethanol at 5000 rpm for 1.125 min) and lemon peel (16.89 mg-GAE/g-DW with 0.1 g sample, 33.62% ethanol at 5007 rpm for 1.282 min). The antioxidant activities of the extracts were measured by several in vitro studies. The most prominent biophenols of the wastes were quantified by high performance liquid chromatography (HPLC). Fourier-transform infrared-attenuated total reflectance (FTIR-ATR) and atomic force microscopy (AFM) techniques were also used for characterization.

show abstract

A Green Valorisation Approach Using Microwaves and Supercritical CO2 for High-Added Value Ingredients from Mandarin (Citrus deliciosa Tenore) Leaf Waste

Cited by 23 publications

References 49 publications

Bioactive Phenolic Compounds From Agri-Food Wastes: An Update on Green and Sustainable Extraction Methodologies

Bioactive Phenolic Compounds From Agri-Food Wastes: An Update on Green and Sustainable Extraction Methodologies

Environmentally Friendly Methods for Flavonoid Extraction from Plant Material: Impact of Their Operating Conditions on Yield and Antioxidant Properties

Optimization of Bioactive Substances in the Wastes of Some Selective Mediterranean Crops

Contact Info

Product

Resources

About