Natural Deep Eutectic Solvents and Microwave-Assisted Green Extraction for Efficient Recovery of Bioactive Compounds from By-Products of Date Fruit (Phoenix dactylifera L.) Processing: Modeling, Optimization, and Phenolic Characterization

Airouyuwa, Jennifer Osamede; Mostafa, Hussein; Riaz, Asad; Stathopoulos, Constantinos; Maqsood, Sajid

doi:10.1007/s11947-022-02960-8

Cited by 29 publications

(4 citation statements)

References 81 publications

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“…Phenolic compounds of date fruit have been extensively studied. Regarding the identification and quantification of phenolic acids and flavonoids, Airouyuwa et al [ 70 ] identified ten polyphenols, namely, in descending order, 3,4-dihydroxybenzoic acid, caffeic acid, p-coumaric acid, ferulic acid, vanillic acid, rutin hydrate, catechin, cinnamic acid, 4-hydroxybenzoic acid, and syringic acid. Bouhlali et al [ 71 ], as well, reported ten phenolic compounds, in descending order, p-coumaric acid, caffeic acid, rutin, quercetin, gallic acid, vanillic acid, luteolin, chlorogenic acid, ferulic acid, and syringic acid.…”

Section: Resultsmentioning

confidence: 99%

“…Furthermore, the irradiated samples did not present ferulic and gallic acids, usually detected in date fruits [ 71 , 72 , 73 ]. The abundance and composition of phenolic compounds in Phoenix dactylifera subspecies changes greatly within cultivars, genetic characteristics, geographic locations, climatic conditions in the growing environment, and the extraction methods [ 3 , 70 , 71 , 72 , 73 ].…”

Section: Resultsmentioning

confidence: 99%

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UV-C Treatment Impact on the Availability of Water-Soluble Carbohydrates, Polyphenols, and Antioxidant Capacity of an Algerian Underutilized Date Fruit (Phoenix dactylifera L.)

Djaoud,

De la Peña-Armada,

García-Alonso

et al. 2024

Foods

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Underutilized dates are considered as a socioeconomically important fruit for local and global communities, such as Degla-Beida, a common date fruit variety. The aim of this research was to elucidate, for the first time, the efficiency of UV-C light treatment (over different irradiation durations 5, 10, 20, and 40 min) in the enhancement of soluble carbohydrates and phenolic compounds, and to evaluate its effect on the antioxidant capacity. Furthermore, the content of dietary fiber was analyzed: insoluble dietary fiber (11.89 g/100 g); soluble dietary fiber (5.15 g/100 g); and total dietary fiber (17.06 g/100 g). The techno-functional properties were also determined: swelling capacity (3.94 mL/g); oil holding capacity (7.38 g/g); water holding capacity (9.30 g/g); and bulk density (1.81 g/mL). All were carried out to study the potential of exploiting this underutilized fruit for other applications as for feed or food. The results suggest that UV-C technology changes minimally the total water-soluble carbohydrate content; however, this preservation technology can affect the availability of different soluble carbohydrates depending on the irradiation time (IT), increasing the high molecular weight polysaccharides with IT up to 20 min, and some oligosaccharides with IT up to 5 min. The polyphenolic content determined by HPLC-QTOF was increased when the samples were submitted to UV-C reaching the maximum at 20 min (111.62 mg/100 g) and then to decrease in those submitted to IT of 40 min (12.05 mg/100 g). Regarding antioxidant capacity in the UV-C treated samples, FRAP decreased and EC50 on DPPH increased when IT was increased, while ORAC was hardly maintained. In addition, considering UV-C radiation associated with preservation and the studied date fruit as a rich source of dietary fiber with adequate techno-functional properties, this study presents valuable information for its potential use as a new food ingredient.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

UV-C Treatment Impact on the Availability of Water-Soluble Carbohydrates, Polyphenols, and Antioxidant Capacity of an Algerian Underutilized Date Fruit (Phoenix dactylifera L.)

Djaoud,

De la Peña-Armada,

García-Alonso

et al. 2024

Foods

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“…This phenomenon was correlated with the different viscosities of the NADES mixtures. Optimized microwave-assisted extraction (MAE) was used in combination with NADESs to isolate bioactive compounds with antioxidant activity from date seed powder [ 39 ]. TP content, FRAP, and DPPH assays were chosen as the responses, and temperature (20, 55, and 80 °C), irradiation time (5, 12.5, and 20 min), and percentage of NADES content (25, 55, and 85%) were the independent variables.…”

Section: Resultsmentioning

confidence: 99%

Valorization of Sour Cherry Kernels: Extraction of Polyphenols Using Natural Deep Eutectic Solvents (NADESs)

Božović,

Dimić,

Teslić

et al. 2024

Molecules

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The objective of this research was to optimize the natural deep eutectic solvent (NADES) extraction process from sour cherry kernels (Prunus cerasus L.). For polyphenol isolation, conventional solid–liquid extraction was employed using different concentrations of ethanol (0, 10, 20, 30, 40, 50, 60, 70, 80, 90, and 96%), as well as the innovative NADES extraction technique. In the initial phase of the research, a screening of 10 different NADESs was conducted, while extraction was carried out under constant parameters (50 °C, 1:20 w/w, 60 min). NADES 4, composed of lactic acid and glucose in a molar ratio of 5:1, exhibited the highest efficiency in the polyphenol isolation. In the subsequent phase of the research, response surface methodology (RSM) was utilized to optimize the extraction process. Three independent variables, namely temperature, extraction time, and solid–liquid (S/L) ratio, were examined at three different levels. The extracted samples were analyzed for total phenol (TP) and antioxidant activity using the DPPH, ABTS, and FRAP assays. ANOVA and descriptive statistics (R2 and CV) were performed to fit the applied model. According to RSM, the optimal extraction conditions were determined as follows: temperature of 70 °C, extraction time of 161 min, and S/L ratio of 1:25 w/w.

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“…Furthermore, the selected precursors typically exhibit low toxicity and environmentally friendly properties and are relatively inexpensive. Thus, DESs can be classified as “green solvents”. ,− The applications of DESs have been reported in biomass processing, − bioprocesses, − gas capture, − biocatalysis, − among others.…”

Section: Introductionmentioning

confidence: 99%

Influence of Hydrogen Bond Acceptors and Water Content on Surface Tension in Glycol-Based Eutectic Mixtures

Aravena,

Cea-Klapp,

Gajardo-Parra

et al. 2024

Ind. Eng. Chem. Res.

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Natural Deep Eutectic Solvents and Microwave-Assisted Green Extraction for Efficient Recovery of Bioactive Compounds from By-Products of Date Fruit (Phoenix dactylifera L.) Processing: Modeling, Optimization, and Phenolic Characterization

Cited by 29 publications

References 81 publications

UV-C Treatment Impact on the Availability of Water-Soluble Carbohydrates, Polyphenols, and Antioxidant Capacity of an Algerian Underutilized Date Fruit (Phoenix dactylifera L.)

UV-C Treatment Impact on the Availability of Water-Soluble Carbohydrates, Polyphenols, and Antioxidant Capacity of an Algerian Underutilized Date Fruit (Phoenix dactylifera L.)

Valorization of Sour Cherry Kernels: Extraction of Polyphenols Using Natural Deep Eutectic Solvents (NADESs)

Influence of Hydrogen Bond Acceptors and Water Content on Surface Tension in Glycol-Based Eutectic Mixtures

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