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Slimani W, Maioli M, Cruciani S, Zerizer S, Santaniello S, Kabouche Z, Coradduzza D, Chessa M, Fancello S, Migheli R, Serra PA, D'hallewin G. Antioxidant, Anti-Inflammatory and Anti-Proliferative Properties of Stachys circinata on HepG2 and MCF7 Cells. Plants (Basel) 2023; 12:2272. [PMID: 37375897 DOI: 10.3390/plants12122272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Revised: 06/07/2023] [Accepted: 06/09/2023] [Indexed: 06/29/2023]
Abstract
According to the WHO, the overall age-standardized cancer rate keeps declining, and the number of cases diagnosed each year increases, remaining among the leading causes of death in 91 out of 172 recorded countries. In this context, novel cancer prediction and therapeutic protocols are compulsory. The effect of a Stachys circinata L'Hér dichloromethane extract (ScDME) on cell redox homeostasis and tumor proliferation was investigated. HepG2 cell feedback mechanisms to oxidative stress exposure were evaluated by determining catalase (CAT) and reduced glutathione (GSH), following the supply with ScDME (0.0-5.7 µg/µL). Cytotoxicity of ScDME against the human umbilical vein endothelial cell (HUVEC) and two human cancer cell lines (breast: MCF7; liver: HepG2) was evaluated by the MTT assay. H2O2-stressed HepG2 cells supplied with the S. circinata extracts exhibited significantly increased CAT and GSH activity as compared to unsupplied ones. The anti-inflammatory activity of the extracts was evaluated by real time-qPCR on IL-1, IL-6 and TNF-α expression. As a result, this research points out that S. circinata dichloromethane extract owns anti-inflammatory and anti-proliferative properties against MCF7 and HepG2 cells and activates CAT and GSH of the HepG2 cells' antioxidant enzyme system.
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Affiliation(s)
- Wassila Slimani
- Laboratoire d'Obtention de Substances Thérapeutiques (L.O.S.T), Département de Chimie, Université des Frères Mentouri-Constantine, Constantine 25000, Algeria
| | - Margherita Maioli
- Department of Biomedical Sciences, University of Sassari, Viale San Pietro 43/B, 07100 Sassari, Italy
| | - Sara Cruciani
- Department of Biomedical Sciences, University of Sassari, Viale San Pietro 43/B, 07100 Sassari, Italy
| | - Sakina Zerizer
- Laboratoire d'Obtention de Substances Thérapeutiques (L.O.S.T), Département de Chimie, Université des Frères Mentouri-Constantine, Constantine 25000, Algeria
| | - Sara Santaniello
- Department of Biomedical Sciences, University of Sassari, Viale San Pietro 43/B, 07100 Sassari, Italy
| | - Zahia Kabouche
- Laboratoire d'Obtention de Substances Thérapeutiques (L.O.S.T), Département de Chimie, Université des Frères Mentouri-Constantine, Constantine 25000, Algeria
| | - Donatella Coradduzza
- Department of Biomedical Sciences, University of Sassari, Viale San Pietro 43/B, 07100 Sassari, Italy
| | - Mario Chessa
- Department of Medicine, Surgery and Pharmacy, Sassari University, Viale San Pietro 43/b, 07100 Sassari, Italy
| | - Silvia Fancello
- Department of Medicine, Surgery and Pharmacy, Sassari University, Viale San Pietro 43/b, 07100 Sassari, Italy
| | - Rossana Migheli
- Department of Medicine, Surgery and Pharmacy, Sassari University, Viale San Pietro 43/b, 07100 Sassari, Italy
| | - Pier Andrea Serra
- Department of Medicine, Surgery and Pharmacy, Sassari University, Viale San Pietro 43/b, 07100 Sassari, Italy
| | - Guy D'hallewin
- Institute of Sciences of Food Production, National Research Council, Traversa la Crucca, 3. Loc Baldinca Li Punti, 07100 Sassari, Italy
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Piluzza G, Campesi G, D'hallewin G, Molinu MG, Re GA, Sanna F, Sulas L. Antioxidants in Fruit Fractions of Mediterranean Ancient Pear Cultivars. Molecules 2023; 28:molecules28083559. [PMID: 37110793 PMCID: PMC10144750 DOI: 10.3390/molecules28083559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Revised: 04/11/2023] [Accepted: 04/14/2023] [Indexed: 04/29/2023] Open
Abstract
BACKGROUND The genetic diversity of Sardinian pear germplasm has received limited attention regarding its chemical composition. Understanding this composition can aid in the setting up of resilient, extensive groves that offer multiple products and ecosystem services. This research aimed at investigating the antioxidant properties and phenolic compounds of ancient pear cultivars grown extensively in Sardinia (Italy); Methods: the cultivars Buttiru, Camusina, Spadona, and Coscia (as a reference) were compared. Fruit samples were manually peeled and cut. Their flesh, peel, core, and peduncle were frozen separately, lyophilized, and milled before being analysed; Results: The content of total phenolics (TotP), total flavonoids (TotF), condensed tannins (CT), and antioxidant capacity in each fruit part varied significantly among the cultivars. The TotP content was high in the peduncle (42.2-58.8 g GAE kg-1 DM) and low in flesh (6.4-17.7 g GAE kg-1 DM); Conclusions: the highest values of antioxidant capacity, TotP, NTP, TotF, and CT were found in the flesh of the cultivar Buttiru and in the peel of the cultivar Camusina. Chlorogenic acid was the major individual phenolic compound in peel, flesh and core, whereas arbutin was mostly present in the peduncle. Results can contribute to revise target exploitations of underutilized ancient pear cultivars.
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Affiliation(s)
- Giovanna Piluzza
- National Research Council, Institute for the Animal Production System in Mediterranean Environment, Traversa La Crucca 3, Località Baldinca, 07100 Sassari, Italy
| | - Giuseppe Campesi
- National Research Council, Institute for the Animal Production System in Mediterranean Environment, Traversa La Crucca 3, Località Baldinca, 07100 Sassari, Italy
| | - Guy D'hallewin
- National Research Council, Institute of Sciences of Food Production, Traversa La Crucca 3, Località Baldinca, 07100 Sassari, Italy
| | - Maria Giovanna Molinu
- National Research Council, Institute of Sciences of Food Production, Traversa La Crucca 3, Località Baldinca, 07100 Sassari, Italy
| | - Giovanni Antonio Re
- National Research Council, Institute for the Animal Production System in Mediterranean Environment, Traversa La Crucca 3, Località Baldinca, 07100 Sassari, Italy
| | - Federico Sanna
- National Research Council, Institute for the Animal Production System in Mediterranean Environment, Traversa La Crucca 3, Località Baldinca, 07100 Sassari, Italy
| | - Leonardo Sulas
- National Research Council, Institute for the Animal Production System in Mediterranean Environment, Traversa La Crucca 3, Località Baldinca, 07100 Sassari, Italy
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Ramli I, Posadino AM, Zerizer S, Spissu Y, Barberis A, Djeghim H, Azara E, Bensouici C, Kabouche Z, Rebbas K, D'hallewin G, Sechi LA, Pintus G. Low concentrations of Ambrosia maritima L. phenolic extract protect endothelial cells from oxidative cell death induced by H 2O 2 and sera from Crohn's disease patients. J Ethnopharmacol 2023; 300:115722. [PMID: 36115603 DOI: 10.1016/j.jep.2022.115722] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Revised: 09/07/2022] [Accepted: 09/09/2022] [Indexed: 06/15/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE A rising resort to herbal therapies in Crohn's disease (CD) alternative treatments has been recently observed due to their remarkable natural efficiency. In this context, the weed plant Ambrosia maritima L., traditionally known as Hachich el Aouinet in Algeria and as Damsissa in Egypt and Sudan, is widely used in North African folk medicine to treat infections, inflammatory diseases, gastrointestinal and urinary tract disturbances, rheumatic pain, respiratory problems, diabetes, hypertension and cancer. AIM OF THE STUDY To assess an Ambrosia maritima L. phenolic extract for its phenolic profile composition, its potential antioxidant activity in vitro, and its cytoprotective effect on cultured primary human endothelial cells (ECs) stressed with H2O2 and sera from CD patients. MATERIALS AND METHODS Phenolic compound extraction was performed with a low-temperature method. Extract chemical profile was attained by HPLC-DAD/ESI-MS. The extract in vitro antioxidant activity was assessed using several methods including cupric ion reducing power, DPPH radical scavenging assay, O-Phenanthroline free radical reducing activity, ABTS cation radical decolourisation assay, Galvinoxyl free radicals scavenging assay. Intracellular reactive oxygen species levels were evaluated in human endothelial cells by H2DCFDA, while cell viability was assessed by MTT. RESULTS The phenolic compounds extraction showed a yield of 17.66% with three di-caffeoylquinic acid isomers detected for the first time in Ambrosia maritima L. Using different analytical methods, a significant in vitro antioxidant activity was reported for the Ambrosia maritima L. extract, with an IC50 value of 14.33 ± 3.86 μg/mL for the Galvinoxyl antioxidant activity method. Challenged with ECs the Ambrosia maritima L. extract showed a biphasic dose-dependent effect on H2O2-treated cells, cytoprotective and antioxidant at low doses, and cytotoxic and prooxidant at high doses, respectively. Viability and ROS levels data also demonstrated a prooxidant and cytotoxic effect of CD sera on cultured ECs. Interestingly, 10 μg/mL of Ambrosia maritima L. extract was able to counteract both CD sera-induced oxidative stress and ECs death. CONCLUSION Our data indicated Ambrosia maritima L. as a source of bioactive phenolics potentially employable as a natural alternative for CD treatment.
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Affiliation(s)
- Iman Ramli
- Département de Biologie Animale, Université des Fréres Mentouri Constantine 1, 25000 Constantine, Algeria.
| | - Anna Maria Posadino
- Department of Biomedical Sciences, University of Sassari, 07100, Sassari, Italy
| | - Sakina Zerizer
- Département de Biologie Animale, Université des Fréres Mentouri Constantine 1, 25000 Constantine, Algeria
| | - Ylenia Spissu
- Institute of Sciences of Food Production, National Research Council, 07100, Sassari, Italy
| | - Antonio Barberis
- Institute of Sciences of Food Production, National Research Council, 07100, Sassari, Italy
| | - Hanane Djeghim
- Laboratory of Biochemistry, Division of Biotechnology and Health, Biotechnology Research Center (CRBt), Constantine, Algeria
| | - Emanuela Azara
- Institute of Biomolecular Chemistry (ICB), National Research Council (CNR), 07100, Sassari, Italy
| | - Chawki Bensouici
- Laboratory of Biochemistry, Division of Biotechnology and Health, Biotechnology Research Center (CRBt), Constantine, Algeria
| | - Zahia Kabouche
- Laboratoire d'Obtention de Substances Thérapeutiques (LOST), Université des Frères Mentouri Constantine 1, 25000 Constantine, Algeria
| | - Khellaf Rebbas
- University of Mohamed Boudiaf, M'sila, Algeria; Laboratory of Agro-Biotechnology and Nutrition in Arid and Semi-Arid Zones Team, University of Ibn Khaldoun, Tiaret, Algeria
| | - Guy D'hallewin
- Institute of Sciences of Food Production, National Research Council, 07100, Sassari, Italy
| | - Leonardo Antonio Sechi
- Department of Biomedical Sciences, University of Sassari, 07100, Sassari, Italy; Azienda Ospedaliera Universitaria, Uitità Complessa di Microbiologia e Virologia, 07100, Sassari, Italy
| | - Gianfranco Pintus
- Department of Biomedical Sciences, University of Sassari, 07100, Sassari, Italy; Department of Medical Laboratory Sciences, College of Health Sciences, And Sharjah Institute for Medical Research, University of Sharjah, Sharjah, 27272, United Arab Emirates.
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Abouloifa H, Rokni Y, Hasnaoui I, Bellaouchi R, Gaamouche S, Ghabbour N, Karboune S, Ben Salah R, Brasca M, D'hallewin G, Saalaoui E, Asehraou A. Characterization of antimicrobial compounds obtained from the potential probiotic Lactiplantibacillus plantarum S61 and their application as a biopreservative agent. Braz J Microbiol 2022; 53:1501-1513. [PMID: 35804284 PMCID: PMC9433471 DOI: 10.1007/s42770-022-00791-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Accepted: 06/30/2022] [Indexed: 11/02/2022] Open
Abstract
This work aimed to characterize the antimicrobial compounds obtained from the potential probiotic Lactiplantibacillus plantarum S61, isolated from traditional fermented green olive, involved in their activity against fungi and bacteria responsible for food spoilage and poisonings. Their application as a biopreservative agent was also investigated. The culture of L. plantarum S61 showed substantial antifungal and antibacterial activity against yeasts (Rhodotorula glutinis and Candida pelliculosa), molds (Penicillium digitatum, Aspergillus niger, Fusarium oxysporum, and Rhizopus oryzae), and pathogenic bacteria (Listeria monocytogenes ATCC 19,117, Salmonella enterica subsp. enterica ATCC 14,028, Staphylococcus aureus subsp. aureus ATCC 6538, Pseudomonas aeruginosa ATCC 49,189), with inhibition zones > 10 mm. Likewise, the cell-free supernatant (CFS) of L. plantarum S61 showed an essential inhibitory effect against fungi and bacteria, with inhibition diameters of 12.25-22.05 mm and 16.95-17.25 mm, respectively. The CFS inhibited molds' biomass and mycelium growth, with inhibition ranges of 63.18-83.64% and 22.57-38.93%, respectively. The antifungal activity of the CFS was stable during 4 weeks of storage at 25 °C, while it gradually decreased during storage at 4 °C. Several antimicrobial compounds were evidenced in the CFS of L. plantarum S61, including organic acids, ethanol, hydrogen peroxide, diacetyl, proteins, and fatty acids. The protein fraction, purified by reversed-phase high-performance liquid chromatography (RP-HPLC), demonstrated important antifungal activity, in relation to the fraction with molecular weight between 2 and 6 kDa. L. plantarum S61 and its CFS, tested in apple and orange fruit biopreservation, demonstrated their protective effect against P. digitatum spoilage. The CFS exhibited effectiveness in reducing Salmonella enterica subsp. enterica ATCC 14,028 in apple juice. L. plantarum S61 and/or its bioactive compounds CFS represent a promising strategy for biocontrol against pathogens and spoilage microorganisms in the agro-industry.
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Affiliation(s)
- Houssam Abouloifa
- Research Unit of Microbiology, Biomolecules and Biotechnology, Laboratory of Chemistry-Physics and Biotechnology of Molecules and Materials, Faculty of Sciences and Techniques - Mohammedia, Hassan II University of Casablanca, Casablanca, Morocco. .,Laboratory of Bioresources, Biotechnology, Ethnopharmacology and Health, Faculty of Sciences, Mohammed Premier University, 60 000, Oujda, Morocco.
| | - Yahya Rokni
- Laboratory of Bioresources, Biotechnology, Ethnopharmacology and Health, Faculty of Sciences, Mohammed Premier University, 60 000, Oujda, Morocco.,Research Unit Bioprocess and Biointerfaces, Laboratory of Industrial Engineering and Surface Engineering, National School of Applied Sciences, Sultan Moulay Slimane University, Mghila, 23000, Beni Mellal, Morocco
| | - Ismail Hasnaoui
- Laboratory of Bioresources, Biotechnology, Ethnopharmacology and Health, Faculty of Sciences, Mohammed Premier University, 60 000, Oujda, Morocco
| | - Reda Bellaouchi
- Laboratory of Bioresources, Biotechnology, Ethnopharmacology and Health, Faculty of Sciences, Mohammed Premier University, 60 000, Oujda, Morocco
| | - Sara Gaamouche
- Laboratory of Bioresources, Biotechnology, Ethnopharmacology and Health, Faculty of Sciences, Mohammed Premier University, 60 000, Oujda, Morocco
| | - Nabil Ghabbour
- Laboratory of Bioresources, Biotechnology, Ethnopharmacology and Health, Faculty of Sciences, Mohammed Premier University, 60 000, Oujda, Morocco.,Laboratory of Natural Resources and Environment, Polydisciplinary Faculty of Taza, Sidi Mohamed Ben Abdellah University, B. P 1223, Taza, Morocco
| | - Salwa Karboune
- Department of Food Science and Agricultural Chemistry, Macdonald Campus, McGill University, 21,111 Lakeshore, Ste Anne de Bellevue, Quebec, H9X 3V9, Canada
| | - Riadh Ben Salah
- Laboratory of Microorganisms and Biomolecules, Centre of Biotechnology of Sfax, BP: 1177, 3018, Sfax, Tunisia
| | - Milena Brasca
- Institute of Sciences of Food Production, National Research Council of Italy, Via Celoria 2, 20133, Milan, Italy
| | - Guy D'hallewin
- Institute of Sciences of Food Production, National Research Council of Italy, UOS Sassari, Traversa La Crucca, 3 Loc. Baldinca, 07040, Sassari, Italy
| | - Ennouamane Saalaoui
- Laboratory of Bioresources, Biotechnology, Ethnopharmacology and Health, Faculty of Sciences, Mohammed Premier University, 60 000, Oujda, Morocco
| | - Abdeslam Asehraou
- Laboratory of Bioresources, Biotechnology, Ethnopharmacology and Health, Faculty of Sciences, Mohammed Premier University, 60 000, Oujda, Morocco
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Venditti T, D'hallewin G, Ladu G, Petretto GL, Pintore G, Labavitch JM. Effect of NaHCO 3 treatments on the activity of cell-wall-degrading enzymes produced by Penicillium digitatum during the pathogenesis process on grapefruit. J Sci Food Agric 2018; 98:4928-4936. [PMID: 29574996 DOI: 10.1002/jsfa.9025] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Revised: 03/19/2018] [Accepted: 03/20/2018] [Indexed: 06/08/2023]
Abstract
BACKGROUND This study was performed to clarify the strategies of Penicillium digitatum during pathogenesis on citrus, assessing, on albedo plugs, the effects of treatment with sodium bicarbonate (NaHCO3 ), at two different pH values (5 and 8.3), on cell-wall-degrading enzyme activity over a period of 72 h. RESULTS Treatment with NaHCO3 , under alkaline pH, delayed the polygalacturonase activity for 72 h, or 48 h in the case of the pectin lyase, compared with the control or the same treatment at pH 5. In contrast, pectin methyl esterase activity rapidly increased after 24 h, in plugs dipped in the same solution. In this case, the activity remained higher than untreated or pH 5-treated plugs up to 72 h. CONCLUSION The rapid increase in pectin methyl esterase activity under alkaline conditions is presumably the strategy of the pathogen to lower the pH, soon after the initiation of infection, in order to restore an optimal environment for the subsequent polygalacturonase and pectin lyase action. In fact, at the same time, a low pH delayed the enzymatic activity of polygalacturonase and pectin lyase, the two enzymes that actually cleave the α-1,4-linkages between the galacturonic acid residues. © 2018 Society of Chemical Industry.
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Affiliation(s)
| | - Guy D'hallewin
- National Research Council - ISPA, U.O.S. Sassari, Sassari, Italy
| | - Gianfranca Ladu
- National Research Council - ISPA, U.O.S. Sassari, Sassari, Italy
| | - Giacomo L Petretto
- Department of Chemistry and Pharmacy, University of Sassari, Sassari, Italy
| | - Giorgio Pintore
- Department of Chemistry and Pharmacy, University of Sassari, Sassari, Italy
| | - John M Labavitch
- Department of Plant Sciences, University of California, Davis, CA, USA
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Manconi M, Petretto G, D'hallewin G, Escribano E, Milia E, Pinna R, Palmieri A, Firoznezhad M, Peris JE, Usach I, Fadda AM, Caddeo C, Manca ML. Thymus essential oil extraction, characterization and incorporation in phospholipid vesicles for the antioxidant/antibacterial treatment of oral cavity diseases. Colloids Surf B Biointerfaces 2018; 171:115-122. [PMID: 30025373 DOI: 10.1016/j.colsurfb.2018.07.021] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Revised: 07/06/2018] [Accepted: 07/09/2018] [Indexed: 12/28/2022]
Abstract
The aim of the work was to extract, characterize, and formulate Thymus capitatus (Tymbra capitata) essential oil in phospholipid vesicles: liposomes, glycerosomes and Penetration Enhancer-containing Vesicles (PEVs). The steam-distilled essential oil was mainly composed of carvacrol. The oil was mixed with lecithin and water to produce liposomes, or different ratios of water/glycerol or water/propylene glycol (PG) to produce glycerosomes and PG-PEVs, respectively. Cryo-TEM showed the formation of unilamellar, spherical vesicles, and light scattering disclosed that their size increased in the presence of glycerol or PG, which improved long-term stability. The formulations were highly biocompatible, and capable of counteracting oxidative stress and favouring wound repair in keratinocytes, thanks to enhanced uptake. The antibacterial activity of the oil was demonstrated against cariogenic Streptococcus mutans, Lactobacillus acidophilus, and commensal Streptococcus sanguinis. The combination of antioxidant and antibacterial activities of Thymus essential oil formulations may be useful for the treatment of oral cavity diseases.
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Affiliation(s)
- Maria Manconi
- Dept. of Scienze della Vita e dell'Ambiente, Drug Science Division, University of Cagliari, 09124 Cagliari, Italy
| | - Giacomo Petretto
- Dept. of Chemistry and Pharmacy, University of Sassari, 07100 Sassari, Italy
| | - Guy D'hallewin
- Institute of Science of Food Production ISPA-CNR, Traversa la Crucca 3, Loc. Baldinca, 07040 Sassari, Italy
| | - Elvira Escribano
- Biopharmaceutics and Pharmacokinetics Unit, Institute for Nanoscience and Nanotechnology, University of Barcelona, Barcelona, Spain
| | - Egle Milia
- Dept. of Experimental Medicine and Surgical Sciences, University of Sassari, 07100 Sassari, Italy
| | - Roberto Pinna
- Dept. of Biomedical Sciences, University of Sassari, 07100 Sassari, Italy
| | - Alessandra Palmieri
- Dept. of Experimental Medicine and Surgical Sciences, University of Sassari, 07100 Sassari, Italy
| | - Mohammad Firoznezhad
- Dept. of Horticulture Science, Islamic Azad University, Science and Research Branch, 1477893855 Tehran, Iran
| | - Josè Esteban Peris
- Dept. of Pharmacy, Pharmaceutical Technology and Parasitology, University of Valencia, Burjassot, 46100 Valencia, Spain
| | - Iris Usach
- Dept. of Pharmacy, Pharmaceutical Technology and Parasitology, University of Valencia, Burjassot, 46100 Valencia, Spain
| | - Anna Maria Fadda
- Dept. of Scienze della Vita e dell'Ambiente, Drug Science Division, University of Cagliari, 09124 Cagliari, Italy
| | - Carla Caddeo
- Dept. of Scienze della Vita e dell'Ambiente, Drug Science Division, University of Cagliari, 09124 Cagliari, Italy.
| | - Maria Letizia Manca
- Dept. of Scienze della Vita e dell'Ambiente, Drug Science Division, University of Cagliari, 09124 Cagliari, Italy
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7
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Orrù G, Demontis C, Mameli A, Tuveri E, Coni P, Pichiri G, Coghe F, Rosa A, Rossi P, D'hallewin G. The Selective Interaction of Pistacia lentiscus Oil vs. Human Streptococci, an Old Functional Food Revisited with New Tools. Front Microbiol 2017; 8:2067. [PMID: 29114245 PMCID: PMC5660700 DOI: 10.3389/fmicb.2017.02067] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Accepted: 10/09/2017] [Indexed: 11/13/2022] Open
Abstract
Pistacia lentiscus berry oil (LBO) represents a typical vegetal product of the Mediterranean basin that has been formally used in traditional cuisine for 100s of years. In addition to its interesting alimentary properties, this product could represent an interesting candidate in the field of research on the study of new anti-infective agents. In fact, in Mediterranean countries, lentisk oil still continues to be widely used in folk medicine for oral and skin affections, in particular, acute gingivitis, pediatric skin infections such as impetigo and foot plaques, and biofilm related infections often associated with Streptococcus spp. Following these observations, we have hypothesized a “lentisk oil-bacteria” interaction, placing particular emphasis on the different Streptococcal species involved in these oral and skin diseases. In accordance with this hypothesis, the use of standard antimicrobial-antibiofilm methods (MIC, MBC, MBIC) allowed the interesting behavior of these bacteria to be observed and, in this context, the response to lentisk oil appears to be correlated with the pathogenic profile of the considered microorganism. Two probiotic strains of S. salivarius K12/M18 appeared to be non-sensitive to this product, while a set of five different pathogenic strains (S. agalactiae, S. intermedius, S. mitis, S. mutans, S. pyogenes) showed a response that was correlated to the fatty acid metabolic pathway of the considered species. In fact, at different times of bacteria development, selective High Performance Liquid Chromatography analysis of the growth medium containing LBO detected a significant increase in free unsaturated fatty acids (UFAs) in particular oleic, palmitic and linoleic acids, which are already known for their antibacterial activity. In this context, we have hypothesized that LBO could be able to modulate the pathogen/probiotic rate in a Streptococcal population using the fatty acid metabolic pathway to help the probiotic strain. This hypothesis was strengthened by performing antibacterial testing with oleic acid and an in silico evaluation of the Streptococcal MCRA protein, an enzyme involved in the production of saturated fatty acids from UFA. These results show that LBO may have been used in ancient times as a “natural microbial modulating extract” in the prevention of biofilm- associated diseases.
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Affiliation(s)
- Germano Orrù
- Molecular Biology Service, Department of Surgical Sciences, University of Cagliari, Cagliari, Italy
| | - Cristina Demontis
- Molecular Biology Service, Department of Surgical Sciences, University of Cagliari, Cagliari, Italy
| | - Antonello Mameli
- Molecular Biology Service, Department of Surgical Sciences, University of Cagliari, Cagliari, Italy
| | - Enrica Tuveri
- Molecular Biology Service, Department of Surgical Sciences, University of Cagliari, Cagliari, Italy
| | - Pierpaolo Coni
- Department of Surgical Sciences, University of Cagliari, Cagliari, Italy
| | - Giuseppina Pichiri
- Department of Surgical Sciences, University of Cagliari, Cagliari, Italy
| | - Ferdinando Coghe
- University Hospital Laboratory Services, Azienda Ospedaliero-Universitaria di Cagliari, Cagliari, Italy
| | - Antonella Rosa
- Department of Biomedical Sciences, University of Cagliari, Cagliari, Italy
| | - Paola Rossi
- Department of Biology and Biotechnology "L. Spallanzani", University of Pavia, Pavia, Italy
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8
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Manconi M, Manca ML, Marongiu F, Caddeo C, Castangia I, Petretto GL, Pintore G, Sarais G, D'hallewin G, Zaru M, Bacchetta G, Fadda AM. Chemical characterization of Citrus limon var. pompia and incorporation in phospholipid vesicles for skin delivery. Int J Pharm 2016; 506:449-57. [PMID: 27084291 DOI: 10.1016/j.ijpharm.2016.04.014] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2016] [Revised: 04/05/2016] [Accepted: 04/09/2016] [Indexed: 10/21/2022]
Abstract
The components of pompia, a hybrid Citrus species cultivated only in Sardinia (Italy), were extracted using an environmentally-friendly method and food-grade solvents. Taking into account that only few data are available on pompia composition, the phytochemical fingerprint of its rind extract was obtained by accurate component separation and identification, combining HPLC and mass spectrometry. Different flavones such as naringin (23.77μg/mg), neoeriocitrin (46.53μg/mg) and neohesperidin (44.57μg/mg) were identified. Additionally, the antioxidant activity and phenolic content were confirmed by DPPH and Folin-Ciocalteu assays. The whole extract was incorporated in innovative phospholipid vesicles, namely glycerosomes, hyalurosomes and glycerol containing hyalurosomes, which were prepared using a high ratio of extract/phospholipid (1/3.5w/w). The in vitro biocompatibility of the nanoincorporated extract and its ability to potentiate the aptitude of the extract to counteract oxidative stress in skin cells were evaluated. The vesicles, especially glycerol containing hyalurosomes, were able to prevent oxidative damage and death of both keratinocytes and fibroblasts, promoting their viability.
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Affiliation(s)
- Maria Manconi
- Dept. Scienze della Vita e dell'Ambiente, University of Cagliari, Cagliari, Italy
| | - Maria Letizia Manca
- Dept. Scienze della Vita e dell'Ambiente, University of Cagliari, Cagliari, Italy.
| | - Francesca Marongiu
- Dept. Scienze della Vita e dell'Ambiente, University of Cagliari, Cagliari, Italy
| | - Carla Caddeo
- Dept. Scienze della Vita e dell'Ambiente, University of Cagliari, Cagliari, Italy
| | - Ines Castangia
- Dept. Scienze della Vita e dell'Ambiente, University of Cagliari, Cagliari, Italy
| | | | - Giorgio Pintore
- Dept. of Chemistry and Pharmacy, University of Sassari, Sassari, Italy
| | - Giorgia Sarais
- Dept. Scienze della Vita e dell'Ambiente, University of Cagliari, Cagliari, Italy
| | - Guy D'hallewin
- Institute of Science of Food Production UOS Sassari-CNR, Traversa la Crucca, 3 Loc. Baldinca, 07040 Sassari, Italy
| | - Marco Zaru
- Icnoderm srl, Sardegna Ricerche Ed.5, Pula (Cagliari), 09010, Italy
| | - Gianluigi Bacchetta
- Dept. Scienze della Vita e dell'Ambiente, University of Cagliari, Cagliari, Italy
| | - Anna Maria Fadda
- Dept. Scienze della Vita e dell'Ambiente, University of Cagliari, Cagliari, Italy
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Venditti T, Dore A, Molinu M, D'hallewin G, Rodov V. TREATMENT WITH UV-C LIGHT FOLLOWED BY NAHCO3 APPLICATION HAS SYNERGIC ACTIVITY AGAINST CITRUS GREEN MOLD. ACTA ACUST UNITED AC 2010. [DOI: 10.17660/actahortic.2010.877.213] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Dore A, Molinu MG, Venditti T, D'hallewin G. Immersion of lemons into imazalil mixtures heated at 50 degrees C alters the cuticle and promotes permeation of imazalil into rind wounds. J Agric Food Chem 2009; 57:623-631. [PMID: 19123818 DOI: 10.1021/jf803085c] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The influence of the immersion of lemon fruit in aqueous imazalil (IMZ) mixtures at 25 or 50 degrees C on the deposition and persistence of IMZ within the fruit rind and its effectiveness in controlling postharvest green mold, caused by Penicillium digitatum, was investigated. Concentrations of IMZ in the albedo tissue surrounding deep wounds in the rind were higher than the mean EC50 values for IMZ-resistant strains (1.0 microg *mL(-1)) after immersion of fruit into IMZ mixtures containing 25, 50, or 75 mg* L(-1) heated to 50 degrees C, but not those at 25 degrees C, where fungicide deposition was insufficient. IMZ residue, one day after treatment with 25, 50, or 75 mg* L(-1), was 3, 5, or 7 times higher after treatment at 50 degrees C compared to treatment at 25 degrees C. IMZ residues within the albedo of unwounded fruit treated with 25, 50, or 75 mg* L(-1) at 50 degrees C were 0.8, 1.3, or 2.0 microg * g(-1), respectively, while those similarly treated at 25 degrees C had negligible residues. Residues following treatment at 50 degrees C in the albedo did not decline during storage at 10 degrees C after 60 days. IMZ residues in the flavedo were higher than those in the albedo: after treatment with 25, 50, or 75 mg* L(-1) IMZ, they averaged 1.0, 1.2, or 2.7 microg * g(-1), respectively, after treatment at 25 degrees C, and 5.5, 7.9, or 16.2 microg * g(-1), respectively, after treatment at 50 degrees C. IMZ effectiveness as an eradicant to control green mold improved when it was heated. Green mold was reduced by 22 or 95% after treatment of lemons inoculated 1 h before immersion of lemons in IMZ at 50 mg* L(-1) at 25 or 50 degrees C, respectively. Green mold was reduced by 18 or 61% after treatment of lemons inoculated 1 day after immersion of lemons in IMZ at 50 mg* L(-1) at 25 or 50 degrees C, respectively. Scanning electron microscopy of the rind surface indicated that treatment at 50 degrees C for 2 min also caused ruptures in the cuticle.
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Affiliation(s)
- Antonio Dore
- Consiglio Nazionale delle Ricerche, Istituto di Scienze delle Produzioni Alimentari, Sassari, Italy
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11
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Venditti T, Molinu MG, Dore A, Agabbio M, D'hallewin G. Sodium carbonate treatment induces scoparone accumulation, structural changes, and alkalinization in the albedo of wounded citrus fruits. J Agric Food Chem 2005; 53:3510-3518. [PMID: 15853395 DOI: 10.1021/jf0482008] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Following sodium carbonate treatment, accumulation of scoparone (6,7-dimethoxycoumarin) but not scopoletin (6-methoxy-7-hydroxycoumarin) was found in the albedo of wounded fruit from different Citrus sp. and cultivars. Treating wounded mandarin fruit cv. Fairchild with 5% Na(2)CO(3) (SC) lead to a scoparone accumulation in the albedo of 310, 361, and 382 microg g(-1) fresh weight after 7, 10, and 15 days, respectively. Scoparone accumulation was associated with a decrease in decay severity. When oranges cv. Biondo comune wounded and treated with 5% SC were inoculated with Penicillium digitatum or Penicillium italicum conidia 3 days posttreatment, the decay percentage as compared to untreated wounds was reduced by 97.2 and 93.9%, respectively. Observations by scanning electron microscopy of wounded Citrus fruits treated at 20 degrees C with 2, 3, 4, or 5% (w/v) solutions of sodium carbonate showed structural modifications to the albedo as well as damage to 24-48 h old mycelia of P. digitatum, the cause of citrus green mold. Modifications were more evident in orange, lemon, and grapefruit as compared to mandarin fruit. The efficacy of the treatment was strictly related to the SC interaction with the albedo tissue that, in addition to structural changes, significantly increased tissue pH, affecting P. digitatum pathogenicity. The SC remaining as a film on unwounded flavedo had no effect in preventing contact infection by the Penicillia.
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Affiliation(s)
- Tullio Venditti
- Consiglio Nazionale Delle Ricerche, Istituto di Scienze delle Produzioni Alimentari, Sezione di Sassari, Via dei Mille, 48-07100 Sassari, Italy
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Schirra M, Delogu G, Cabras P, Angioni A, D'hallewin G, Veyrat A, Marcos JF, Candelas LG. Complexation of imazalil with beta-cyclodextrin, residue uptake, persistence, and activity against penicillium decay in citrus fruit following postharvest dip treatments. J Agric Food Chem 2002; 50:6790-6797. [PMID: 12405777 DOI: 10.1021/jf020542v] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
A method for the inclusion of imazalil (IMZ) in the beta-cyclodextrin (betaCD), structural characterization of the inclusion complex and its antifungal activity against Penicillium digitatum and P. italicum assessed by in vitro and in vivo tests are reported. According to the starting stoichiometry of betaCD with respect to IMZ, an equimolar ratio beta-cyclodextrin-IMZ (betaCD-IMZ) was detected by (1)H NMR. In vitro assays showed that the freshly prepared betaCD-IMZ was as effective as IMZ, although 1- and 4-day-old betaCD-IMZ mixtures were more effective. Studies on Star Ruby grapefruit showed no significant differences in residue uptake between treatments with an IMZ commercially available fungicide (Deccozil) or betaCD-IMZ when equal active ingredient (a.i.) concentrations (250 mg/L) and dip temperatures (20 or 50 degrees C) were used. By contrast, treatments of Tarocco oranges and Di Massa lemons with 250 mg/L betaCD-IMZ at 50 degrees C produced significant differences in residue uptake in comparison with 250 mg/L Deccozil treatments at 50 degrees C. The a.i. degradation rate in grapefruit during postquarantine and simulated marketing period (SMP) at 20 degrees C was not affected by the type of formulation used, whether at 20 or 50 degrees C. Conversely, IMZ in oranges and lemons had greater persistence when applied at 50 degrees C. All fungicide treatments showed a comparable efficacy against decay in grapefruit and oranges, whereas treatment in lemons at 250 mg/L a.i. of heated fungicides had higher suppressive effects against decay than unheated chemicals having equal a.i. concentrations and comparable activity at 1200 mg/L IMZ at 20 degrees C.
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Affiliation(s)
- Mario Schirra
- C. N. R. - Istituto di Scienze delle Produzioni Alimentari, Sezione di Sassari, Località Palloni, Nuraxinieddu, 09170 Oristano, Italy.
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Schirra M, Cabras P, Angioni A, D'hallewin G, Pala M. Residue uptake and storage responses of Tarocco blood oranges after preharvest thiabendazole spray and postharvest heat treatment. J Agric Food Chem 2002; 50:2293-2296. [PMID: 11929286 DOI: 10.1021/jf0114583] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Tarocco blood oranges (Citrus sinensis Linn. Obsek) were subjected to a single preharvest spray with thiabendazole (TBZ) at a concentration of 1% active ingredient (ai) in water and harvested 2 weeks after fungicide application or heated at 37 degrees C for 48 h under saturated humidity after harvest. The two treatments were also combined before cold quarantine (3 weeks at 2 degrees C), subsequent storage (3 weeks at 8 degrees C), and simulated marketing period (SMP) (1 week at 20 degrees C). Fruit not treated with TBZ and unheated were used as controls. The residue levels of TBZ (active ingredient, whole fruit basis) after spray were approximately 6.3 and 5.4 mg x kg(-1) before fruit storage respectively, a level close to the tolerance limit set by the European Community. TBZ showed a high persistence during quarantine, storage, and SMP. TBZ spray significantly reduced the incidence and severity of chilling injury (CI) and decay during the postquarantine period and SMP. Heat treatment (HT) produced beneficial effects in controlling CI, especially during SMP, when applied in combination with TBZ. However, HT remarkably promoted the development of secondary fungal infections such as Phytophthora rots and adversely affected fruit flavor and taste. The occurrence of off-flavor and off-taste was found to be perceptible after heating.
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Affiliation(s)
- Mario Schirra
- CNR, Istituto di Scienza delle Produzioni Alimentari, Località Palloni, Nuraxinieddu, 09170 Oristano, Italy.
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D'hallewin G, Schirra M. STRUCTURAL CHANGES IN EPICUTICULAR WAX AND STORAGE RESPONSE OF âMARSH SEEDLESSâ GRAPEFRUITS AFTER ETHANOL DIPS AT 21 AND 50°C. ACTA ACUST UNITED AC 2001. [DOI: 10.17660/actahortic.2001.553.103] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Nafussi B, Ben-Yehoshua S, Rodov V, Peretz J, Ozer BK, D'hallewin G. Mode of action of hot-water dip in reducing decay of lemon fruit. J Agric Food Chem 2001; 49:107-13. [PMID: 11170566 DOI: 10.1021/jf000700n] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
A hot-water dip for 2 min at 52-53 degrees C prevented decay for at least one week in lemon fruit inoculated with Penicillium digitatum. The mode of action of hot water in reducing decay was investigated by studying the effects of this treatment on the pathogen and on the resistance mechanisms of the fruit. The hot-water dip had a transient inhibitory effect on the pathogen, arresting its growth for 24-48 h. During this lag period, the combined effects of the pathogen and the hot-water dip induced the build up of resistance in the peel. Lignin production in the inoculated sites began within 24 h after inoculation or wounding. When inoculation was followed by the hot-water dip, lignin accumulation continued for a week. Inoculated lemons that were not dipped in hot water rotted completely within 3 days after inoculation and their lignin content did not rise or even decreased. The scoparone concentration in the inoculated sites of hot dipped fruit started to rise 24 h after treatment and reached a level sufficient to inhibit the pathogen within 2 days after treatment. Parallel to scoparone accumulation, scopoletin was detected in inoculated and heat-treated lemons. Without the pathogen challenge or wounding, heat treatment by itself was not able to induce any of the above-mentioned defensive effects. Our data do not support the involvement of ethanol-extractable aldehydes, associated in the literature with wound gum, or of citral in decay inhibition in hot-water dipped lemons.
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Affiliation(s)
- B Nafussi
- Department of Postharvest Science of Fresh Produce, Agricultural Research Organization, The Volcani Center, Bet Dagan 50250, Israel
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D'hallewin G, Schirra M, Pala M, Ben-Yehoshua S. Ultraviolet C irradiation at 0.5 kJ.m(-)(2) reduces decay without causing damage or affecting postharvest quality of star ruby grapefruit (C. paradisi Macf.). J Agric Food Chem 2000; 48:4571-4575. [PMID: 11052702 DOI: 10.1021/jf000559i] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Star Ruby grapefruit [Citrus paradisi (Macf.)] were harvested in November, February, and May, treated with ultraviolet C (UV-C) light at 0.5, 1.5, or 3.0 kJ.m(-)(2), and then stored at 7 degrees C and 90-95% relative humidity (RH) for 4 weeks with 1 additional week at 20 degrees C and approximately 80% RH. Untreated fruits were used as control. UV-C irradiation at 0.5 kJ.m(-)(2) effectively reduced decay development as compared to nontreated fruit without causing damage. Irradiation at dosages >0.5 kJ.m(-)(2) did not further improve decay control and caused rind browning and necrotic peel, the extent of damage depending on treatment dosage and harvest date. The percentage of damaged fruit after irradiation at the higher UV-C dosages was significantly higher in fruit harvested in November; differences between fruits harvested in February and May were negligible. After UV-C irradiation, the phytoalexins scoparone and scopoletin accumulated in flavedo tissue, their amounts depending on harvest date and UV-C dosage. Both phytoalexins showed similar accumulation patterns, although the concentrations of scoparone were much lower than those of scopoletin. Phytoalexin levels increased in most samples as the treatment dosage increased. No detectable levels of scoparone and scopoletin could be found in nonirradiated fruit. The influence of UV-C treatments on soluble solids concentration and titratable acidity of juice was negligible.
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Affiliation(s)
- G D'hallewin
- CNR Istituto per la Fisiologia della Maturazione e della Conservazione del Frutto delle Specie Arboree Mediterranee, 07100 Sassari, 09170 Oristano, Italy
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Agabbio M, Lovicu G, Pala M, D'hallewin G, Mura M, Schirra M. FRUIT CANOPY POSITION EFFECTS ON QUALITY AND STORAGE RESPONSE OF 'TAROCCO' ORANGES. ACTA ACUST UNITED AC 1999. [DOI: 10.17660/actahortic.1999.485.1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Schirra M, Agabbio M, D'hallewin G, Pala M, Ruggiu R. Response of Tarocco Oranges to Picking Date, Postharvest Hot Water Dips, and Chilling Storage Temperature. J Agric Food Chem 1997; 45:3216-3220. [DOI: 10.1021/jf970273m] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Affiliation(s)
- Mario Schirra
- CNR Istituto per la Fisiologia della Maturazione e della Conservazione del Frutto delle Specie Arboree Mediterranee, Località Palloni, 09170 Oristano, Italy, Dipartimento di Scienze Ambientali e Agroalimentari e Biotecnologie Agroalimentari, Facoltà di Agraria, Università di Sassari, 07100 Sassari, Italy, and Centro Regionale Agrario Sperimentale, Regione Autonoma della Sardegna, 09123 Cagliari, Italy
| | - Mario Agabbio
- CNR Istituto per la Fisiologia della Maturazione e della Conservazione del Frutto delle Specie Arboree Mediterranee, Località Palloni, 09170 Oristano, Italy, Dipartimento di Scienze Ambientali e Agroalimentari e Biotecnologie Agroalimentari, Facoltà di Agraria, Università di Sassari, 07100 Sassari, Italy, and Centro Regionale Agrario Sperimentale, Regione Autonoma della Sardegna, 09123 Cagliari, Italy
| | - Guy D'hallewin
- CNR Istituto per la Fisiologia della Maturazione e della Conservazione del Frutto delle Specie Arboree Mediterranee, Località Palloni, 09170 Oristano, Italy, Dipartimento di Scienze Ambientali e Agroalimentari e Biotecnologie Agroalimentari, Facoltà di Agraria, Università di Sassari, 07100 Sassari, Italy, and Centro Regionale Agrario Sperimentale, Regione Autonoma della Sardegna, 09123 Cagliari, Italy
| | - Mario Pala
- CNR Istituto per la Fisiologia della Maturazione e della Conservazione del Frutto delle Specie Arboree Mediterranee, Località Palloni, 09170 Oristano, Italy, Dipartimento di Scienze Ambientali e Agroalimentari e Biotecnologie Agroalimentari, Facoltà di Agraria, Università di Sassari, 07100 Sassari, Italy, and Centro Regionale Agrario Sperimentale, Regione Autonoma della Sardegna, 09123 Cagliari, Italy
| | - Roberto Ruggiu
- CNR Istituto per la Fisiologia della Maturazione e della Conservazione del Frutto delle Specie Arboree Mediterranee, Località Palloni, 09170 Oristano, Italy, Dipartimento di Scienze Ambientali e Agroalimentari e Biotecnologie Agroalimentari, Facoltà di Agraria, Università di Sassari, 07100 Sassari, Italy, and Centro Regionale Agrario Sperimentale, Regione Autonoma della Sardegna, 09123 Cagliari, Italy
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Nieddu G, De Pau L, Schirra M, D'hallewin G. CHEMICAL COMPOSITION OF FRUIT AND SEEDS OF CACTUS PEARS DURING EARLY AND LATE-INDUCED CROP RIPENING. ACTA ACUST UNITED AC 1997. [DOI: 10.17660/actahortic.1997.438.12] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Rodov V, Ben-Yehoshua S, Fang D, D'hallewin G, Castia T. ACCUMULATION OF PHYTOALEXINS SCOPARONE AND SCOPOLETIN IN CITRUS FRUITS SUBJECTED TO VARIOUS POSTHARVEST TREATMENTS. ACTA ACUST UNITED AC 1994. [DOI: 10.17660/actahortic.1994.381.69] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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D'hallewin G, Arras G, Castia T, Piga A. REDUCING DECAY OF AVANA MANDARIN FRUIT BY THE USE OF UV, HEAT AND THIABENDAZOLE TREATMENTS*. ACTA ACUST UNITED AC 1994. [DOI: 10.17660/actahortic.1994.368.48] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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