Oak barks as raw materials for the extraction of polyphenols for the chemical and pharmaceutical sectors: A regional case study

Dedrie, Maxime; Jacquet, Nicolas; Bombeck, Pierre-Louis; Hebert, Jacques; Richel, Aurore

doi:10.1016/j.indcrop.2015.03.071

Cited by 31 publications

(16 citation statements)

References 11 publications

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“…As 1 3 expected, extraction yields with ethanol-water mixture were higher than those obtained by water, particularly for total flavonoid content, probably due to higher solubility of these compounds in alcohols. However, taking into account the use of hot water extract of oak bark by folk medicine, the TP values obtained for these extracts are higher in comparison with the values (10.5-13.4 mg gallic acid/g) reported for the bark of oak species Q. robur L. and Q. petraea grown in Wallonia region, Belgium (Dedrie et al 2015). The results of one-way ANOVA followed by Turkey's test indicated that TP and TF contents for samples S1 and S2 with different oak ages were statistically similar (p < 0.05) for water as well as ethanol-water extractants.…”

Section: Resultsmentioning

confidence: 59%

“…To the best of the authors' knowledge, the antioxidant activity of Q. robur extract using ethanol-water mixture has not been reported yet. Only polyphenols yields have been determined (Dedrie et al 2015;Bouras et al 2015). Galiňanes et al (2015) found that 2% Na 2 SO 3 extract from Q. robur bark grown in Spain had higher DPPH radical scavenging activity (EC 50 = 0.063 mg/mL) than water extract (EC 50 = 0.074 mg/ mL).…”

Section: Resultsmentioning

confidence: 99%

“…Bark is known to also accumulate large amounts of polyphenolic compounds which exhibit a wide range of biological effects, including antioxidant, antibacterial and anti-inflammatory activity (Ferreira et al 2015;Dedrie et al 2015). Oak bark due to its valuable chemical composition, has been used in traditional medicine for the treatment of wounds and skin diseases.…”

Section: Introductionmentioning

confidence: 99%

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Assessment of polyphenol content and antioxidant activity of oak bark extracts

Dróżdż

Pyrzyńska

2017

Eur. J. Wood Prod.

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Extraction efficiency of total polyphenols and flavonoids from bark oak (Quercus robur L.) grown in the central region of Poland was evaluated. The total phenolics of water and 60% ethanol and extracts were in the range of 55.4-60.4 and 71.0-79.3 mg gallic acid/g of bark, respectively, while the total flavonoid content in these extracts were determined in the range of 35.1-38.0 and 72.0-78.4 mg catechin/g. The hydroalcoholic extracts exhibited higher DPPH radical scavenging activity than BHT (butylated hydroxytoluene), popular food additives.

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Section: Resultsmentioning

confidence: 59%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Assessment of polyphenol content and antioxidant activity of oak bark extracts

Dróżdż

Pyrzyńska

2017

Eur. J. Wood Prod.

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“…Sawdust wastes deriving from the Quercus petraea industrial manufacturing, and wooden wastes ofthe forestry activities derived from Quercus cerris, Quercus ilex, Quercus petraea, and Robinia pseudoacacia could be exploited as a source of useful compounds. Oak bark is the wood tissue richest in tannins, and Q. petraea bark is a source of gallic and ellagic acids as well as catechin and other tannin derivatives [19,20]. Typically, bark represents only the 10%-20% of the volume of a log, so the sawdust-like wastes from heartwood manufacturing processes, combined with the woody wastes from forestry activities, could potentially represent a greater source for the recovery of the above-mentioned compounds.…”

Section: Introductionmentioning

confidence: 99%

Low-Molecular-Weight Phenols Recovery by Eco-Friendly Extraction from Quercus Spp. Wastes: An Analytical and Biomass-Sustainability Evaluation

et al. 2020

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In this work, chemical–physical protocols aimed at the implementation of eco-friendly and biomass-sustainable recovery processes of useful compounds from forestry and/or wood industry wastes were evaluated. Four species of interest in industrial and environmental fields (Quercus cerris, Quercus ilex, and Robinia pseudoacacia from Central Italy, Quercus petraea from France) were submitted to neutral extraction and analyzed by gaschromatography, with mass spectrometry identification of low-molecular-weight phenols. Moreover, Quercus petraea heartwood samples were submitted to three extraction/hydrolysis protocols in an alkaline environment, and the byproducts from the lignin degradation were identified and evaluated. The recovery of bioactive phenols from forestry wastes by applying eco-friendly extractive protocols may reveal a precious strategy for rethinking the management of such wastes, in line with the fundamentals of “circular economy”.

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“…Every year, Belgium apple farmers renew 6% of the apple plantation, which reflects in the annual production of 30,000 ton of woods residues (FAOSTAT, 2015). Traditionally, these apple tree residues are used in low added value applications, such as firewood or dispersed (Dedrie et al, 2015, Ghitescu et al, 2015. Still, in last few years, tree materials, such as bark, have been emerging as possible sources of valuable compounds (Table 1) (Ghitescu et al, 2015, Hofmann et al, 2015.…”

Section: Introductionmentioning

confidence: 99%

Valorization of apple tree wood residues by polyphenols extraction: Comparison between conventional and microwave-assisted extraction

Moreira

Barroso

Boeykens

et al. 2017

Industrial Crops and Products

118

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For the first time, the characterization of antioxidant activity and phenolic profile of apple tree (Malus domestica) bark, core and roots was carried out. Phenolic compounds were extracted from the Belgium apple tree wood residues collected at two seasons, namely summer 2015 and winter 2016, using conventional (CE) and microwave-assisted extraction (MAE) techniques. For each extraction technique, the influence of the most important operational parameters, namely solvent composition, extraction time and temperature, on the total phenolic and flavonoid content, and antioxidant activity by the 2,2-diphenyl-1-picrylhydrazyl radical scavenging activity (DPPH-RSA) and ferric reducing activity power (FRAP) assays were optimized. The phenolic profile from the obtained extracts was also characterized by high-performance liquid chromatography with photodiode array detection (HPLC-PDA). Optimum conditions were: 20 mL ethanol:water 60:40 v/v, 20 min, 100 °C, sample weight 0.1 g for MAE and 20 mL ethanol:water 50:50 v/v, 2 h, 55 °C, sample weight 0.5 g for CE. Root extracts obtained by MAE (the most efficient technique) presented the highest phenolic (47.7 ± 0.9 mg gallic acid equivalents/g dry weight) and flavonoid (17.1 ± 0.8 mg epicatechin equivalents/g dry weight) content, and antioxidant activity (28.4 ± 2.0 mg trolox equivalents/g dry weight and 36.1 ± 2.7 mg ascorbic acid equivalents/g dry weight for DPPH-RSA and FRAP assays, respectively), followed by bark and core wood extracts. HPLC-PDA analysis revealed that phloridzin was the main contributor to the phenolic composition representing 52%-87% of the total amount of phenolic compounds quantified, while phenolic acids represents less than 10%. This study reveals the potential of apple tree wood residues valorization through the recovery of phenolic compounds for food, pharmaceutical and cosmetic applications.

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Oak barks as raw materials for the extraction of polyphenols for the chemical and pharmaceutical sectors: A regional case study

Cited by 31 publications

References 11 publications

Assessment of polyphenol content and antioxidant activity of oak bark extracts

Assessment of polyphenol content and antioxidant activity of oak bark extracts

Low-Molecular-Weight Phenols Recovery by Eco-Friendly Extraction from Quercus Spp. Wastes: An Analytical and Biomass-Sustainability Evaluation

Valorization of apple tree wood residues by polyphenols extraction: Comparison between conventional and microwave-assisted extraction

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