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Aiello F, Malivindi R, Motta MF, Crupi P, Nicoletti R, Benincasa C, Clodoveo ML, Rago V, Spizzirri UG, Restuccia D. Synthesis and Characterization of a Biopolymer Pectin/Ethanolic Extract from Olive Mill Wastewater: In Vitro Safety and Efficacy Tests on Skin Wound Healing. Int J Mol Sci 2023; 24:15075. [PMID: 37894755 PMCID: PMC10606433 DOI: 10.3390/ijms242015075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2023] [Revised: 09/27/2023] [Accepted: 10/05/2023] [Indexed: 10/29/2023] Open
Abstract
Wound-healing delay is one of the major problems of type 2 diabetes, representing also a clinical emergency in non-healing chronic wounds. Natural antioxidants show interesting wound-healing properties, including those extracted from waste derived from olive oil production. Olive mill wastewater is one of the main by-products of the olive oil-making process, and it is rich in high-value secondary metabolites, mainly hydroxytyrosol. We proposed an eco-friendly extraction method, employing both ultrasound-assisted and Soxhlet techniques and ethanol as a solvent, to recover valuable molecules from Roggianella cv (Olea europea L.) olive mill wastewater, which was further entrapped in a pectin polymer via an enzymatic reaction using porcine pancreatic lipase. Pectin, in combination with other substances, promoted and accelerated wound healing and demonstrated good potential to produce a biomedical conjugate for wound treatment. The antioxidant activity of the extracts and conjugate were evaluated against lipophilic (IC50 equal to 0.152 mg mL-1) and hydrophilic (IC50 equal to 0.0371 mg mL-1) radical species as well as the in vitro cytotoxicity via NRU, h-CLAT, and a wound-healing scratch assay and assessment. The pectin conjugate did not exert hemolytic effects on the peripheral blood, demonstrating interesting wound-healing properties due to its ability to stimulate cell proliferation in a dose-dependent manner.
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Affiliation(s)
- Francesca Aiello
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, 87036 Rende, Italy; (R.M.); (M.F.M.); (V.R.); (U.G.S.); (D.R.)
| | - Rocco Malivindi
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, 87036 Rende, Italy; (R.M.); (M.F.M.); (V.R.); (U.G.S.); (D.R.)
| | - Marisa Francesca Motta
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, 87036 Rende, Italy; (R.M.); (M.F.M.); (V.R.); (U.G.S.); (D.R.)
| | - Pasquale Crupi
- Interdisciplinary Department of Medicine, University Aldo Moro Bari, 70121 Bari, Italy; (P.C.); (M.L.C.)
| | - Rosa Nicoletti
- Council for Agricultural Research and Economics (CREA), Research Centre for Olive, Fruit and Citrus Crops, Via Settimio Severo 83, 87036 Rende, Italy; (R.N.); (C.B.)
- DICEM—Department of European and Mediterranean Cultures: Architecture, Environment, and Cultural Heritage, University of Basilicata, Matera, Via Lanera, 20, 75100 Matera, Italy
| | - Cinzia Benincasa
- Council for Agricultural Research and Economics (CREA), Research Centre for Olive, Fruit and Citrus Crops, Via Settimio Severo 83, 87036 Rende, Italy; (R.N.); (C.B.)
| | - Maria Lisa Clodoveo
- Interdisciplinary Department of Medicine, University Aldo Moro Bari, 70121 Bari, Italy; (P.C.); (M.L.C.)
| | - Vittoria Rago
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, 87036 Rende, Italy; (R.M.); (M.F.M.); (V.R.); (U.G.S.); (D.R.)
| | - Umile Gianfranco Spizzirri
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, 87036 Rende, Italy; (R.M.); (M.F.M.); (V.R.); (U.G.S.); (D.R.)
- Ionian Department of Law, Economics and Environment, University of Bari Aldo Moro, 74123 Taranto, Italy
| | - Donatella Restuccia
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, 87036 Rende, Italy; (R.M.); (M.F.M.); (V.R.); (U.G.S.); (D.R.)
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Cifuni GF, Claps S, Morone G, Sepe L, Caparra P, Benincasa C, Pellegrino M, Perri E. Valorization of Olive Mill Byproducts: Recovery of Biophenol Compounds and Application in Animal Feed. PLANTS (BASEL, SWITZERLAND) 2023; 12:3062. [PMID: 37687309 PMCID: PMC10490477 DOI: 10.3390/plants12173062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 08/22/2023] [Accepted: 08/24/2023] [Indexed: 09/10/2023]
Abstract
This study aimed to recover the phenols from olive oil mill wastewater, a major pollutant of the oil industry, by using spray-drying technology to produce a new feed with a nutraceutical value for animal feed supplementation and to evaluate its effect on the productivity and nutritional quality of ewe milk. Forty-five Sarda ewes in late lactation (150 ± 2 d) and with homogeneous live weight (52 ± 1.5 kg) were randomly allotted into three groups and fed with three dietary treatments containing increasing levels of polyphenols: 0% (C), 0.1% (T0.1), and 0.2% (T0.2) of dry matter. No effect of the dietary treatments was found on the milk yield and composition. Interestingly, milk urea content (p < 0.0001) and somatic cell counts (p < 0.001) decreased as the level of polyphenols inclusion in the diet increased. The inclusion of phenols (0.2% of dry matter) in the diet of sheep was effective in increasing the vaccenic (C18:1 trans-11) and rumenic acid (C18: cis-9 trans-11) levels, which are beneficial for human health. Finally, the recovery of polyphenols via spray-drying technology and their incorporation into a new fortified feed can be a valid strategy for naturally improving the nutritional value of milk while valorizing an oil industry byproduct, reducing environmental impact, and promoting waste reuse that is in line with circular economy principles.
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Affiliation(s)
- Giulia Francesca Cifuni
- CREA Research Centre for Animal Production and Aquaculture, 85031 Bella-Muro, Italy; (S.C.); (G.M.); (L.S.)
| | - Salvatore Claps
- CREA Research Centre for Animal Production and Aquaculture, 85031 Bella-Muro, Italy; (S.C.); (G.M.); (L.S.)
| | - Giuseppe Morone
- CREA Research Centre for Animal Production and Aquaculture, 85031 Bella-Muro, Italy; (S.C.); (G.M.); (L.S.)
| | - Lucia Sepe
- CREA Research Centre for Animal Production and Aquaculture, 85031 Bella-Muro, Italy; (S.C.); (G.M.); (L.S.)
| | - Pasquale Caparra
- Division of Animal Production, Department of Agriculture, Mediterranean University of Reggio Calabria, 89124 Reggio Calabria, Italy;
| | - Cinzia Benincasa
- CREA Research Centre for Olive, Fruit and Citrus Crops, 87036 Rende, Italy; (C.B.); (M.P.); (E.P.)
| | - Massimiliano Pellegrino
- CREA Research Centre for Olive, Fruit and Citrus Crops, 87036 Rende, Italy; (C.B.); (M.P.); (E.P.)
| | - Enzo Perri
- CREA Research Centre for Olive, Fruit and Citrus Crops, 87036 Rende, Italy; (C.B.); (M.P.); (E.P.)
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Oleszek M, Kowalska I, Bertuzzi T, Oleszek W. Phytochemicals Derived from Agricultural Residues and Their Valuable Properties and Applications. Molecules 2023; 28:342. [PMID: 36615534 PMCID: PMC9823944 DOI: 10.3390/molecules28010342] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 12/21/2022] [Accepted: 12/25/2022] [Indexed: 01/04/2023] Open
Abstract
Billions of tons of agro-industrial residues are produced worldwide. This is associated with the risk of pollution as well as management and economic problems. Simultaneously, non-edible portions of many crops are rich in bioactive compounds with valuable properties. For this reason, developing various methods for utilizing agro-industrial residues as a source of high-value by-products is very important. The main objective of the paper is a review of the newest studies on biologically active compounds included in non-edible parts of crops with the highest amount of waste generated annually in the world. The review also provides the newest data on the chemical and biological properties, as well as the potential application of phytochemicals from such waste. The review shows that, in 2020, there were above 6 billion tonnes of residues only from the most popular crops. The greatest amount is generated during sugar, oil, and flour production. All described residues contain valuable phytochemicals that exhibit antioxidant, antimicrobial and very often anti-cancer activity. Many studies show interesting applications, mainly in pharmaceuticals and food production, but also in agriculture and wastewater remediation, as well as metal and steel industries.
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Affiliation(s)
- Marta Oleszek
- Department of Biochemistry and Crop Quality, Institute of Soil Science and Plant Cultivation, State Research Institute, 24-100 Puławy, Poland
| | - Iwona Kowalska
- Department of Biochemistry and Crop Quality, Institute of Soil Science and Plant Cultivation, State Research Institute, 24-100 Puławy, Poland
| | - Terenzio Bertuzzi
- DIANA, Department of Animal Science, Food and Nutrition, Faculty of Agricultural, Food and Environmental Sciences, Università Cattolica del Sacro Cuore, Via E. Parmense, 84, 29122 Piacenza, Italy
| | - Wiesław Oleszek
- Department of Biochemistry and Crop Quality, Institute of Soil Science and Plant Cultivation, State Research Institute, 24-100 Puławy, Poland
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Gallardo-Fernández M, Gonzalez-Ramirez M, Cerezo AB, Troncoso AM, Garcia-Parrilla MC. Hydroxytyrosol in Foods: Analysis, Food Sources, EU Dietary Intake, and Potential Uses. Foods 2022; 11:foods11152355. [PMID: 35954121 PMCID: PMC9368174 DOI: 10.3390/foods11152355] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 07/29/2022] [Accepted: 08/04/2022] [Indexed: 11/16/2022] Open
Abstract
Hydroxytyrosol (HT) is a phenolic compound with proven biological properties present in a limited number of foods such as table olives, virgin olive oil (VOO) and wines. The present work aims to evaluate the dietary intake of HT in the European (EU) population by compiling scattered literature data on its concentration in foods. The consumption of the involved foods was estimated based on the EFSA Comprehensive European Food Consumption Database. The updated average contents of HT are as follows: 629.1, 5.2 and 2.1 µg/g for olives, olive oil and wine, respectively. The HT estimated intake in the European Union (EU) adult population falls within 0.13–6.82 mg/day/person, with table olives and wine being the main contributors. The estimated mean dietary intake of HT in EU countries is 1.97 ± 2.62 mg/day. Greece showed the highest HT intake (6.82 mg/day), while Austria presented the lowest (0.13 mg/day). Moreover, HT is an authorized novel food ingredient in the EU that can be added to different foods. Since the estimated HT intake is substantially low, the use of HT as a food ingredient seems feasible. This opens new possibilities for revalorizing waste products from olive oil and olive production which are rich HT sources.
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