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Otero DM, Perret B, Teixeira L, Gautério GV, Treichel H, Kalil SJ. Cryptococcus laurentii: a wild yeast for xylanase production from agricultural by-products. Int Microbiol 2024:10.1007/s10123-024-00555-1. [PMID: 38970730 DOI: 10.1007/s10123-024-00555-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2024] [Revised: 06/26/2024] [Accepted: 07/02/2024] [Indexed: 07/08/2024]
Abstract
The development of technologies that allow the production of enzymes at a competitive cost is of great importance for several biotechnological applications, and the use of agro-industrial by-products is an excellent alternative to minimize costs and reduce environmental impacts. This study aimed to produce endo-xylanases using agro-industrial substrates rich in hemicellulose as sources of xylan in culture media. For this purpose, the yeast Cryptococcus laurentti and five lignocellulosic materials (defatted rice bran, rice husk, corn cob, oat husks, and soybean tegument), with and without pretreatment, were used as a source of xylan for enzyme production. To insert the by-products in the culture medium, they were dried and treated (if applicable) with 4% (w.v-1) NaOH and then added in a concentration of 2% (w.v-1). The cultures were agitated for 96 h, and the aliquots were removed to determine the enzymatic activities. Among the by-products studied, the maximum activity (8.7 U. mL-1 at pH 7.3) was obtained where rice bran was used. In contrast, corn cob was the by-product that resulted in lower enzyme production (1.6 U.mL-1). Thus, the defatted rice bran deserves special attention in front of the other by-products used since it provides the necessary substrate for producing endo-xylanases by yeast.
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Affiliation(s)
- Deborah Murowaniecki Otero
- Graduate Program in Food, Nutrition, and Health, Nutrition School, Federal University of Bahia, 32 Araújo Pinho, Salvador, Brazil
- Graduate Program in Food Science, Faculty of Pharmacy, Federal University of Bahia, Avenue Barão de Jeremoabo, Salvador, Brazil
| | - Bruno Perret
- School of Chemistry and Food, Federal University of Rio Grande, Avenue Italia Km 8, Rio Grande, Brazil
| | - Liliane Teixeira
- School of Chemistry and Food, Federal University of Rio Grande, Avenue Italia Km 8, Rio Grande, Brazil
| | - Gabrielle Vitória Gautério
- School of Chemistry, Department of Biochemical Engineering, Federal University of Rio de Janeiro, Avenue Athos da Silveira Ramos, Rio de Janeiro, 149, 2194, Brazil
| | - Helen Treichel
- Laboratory of Microbiology and Bioprocesses, Environmental Science and Technology, Federal University of Fronteira Sul, Erechim, Brazil.
| | - Susana Juliano Kalil
- School of Chemistry and Food, Federal University of Rio Grande, Avenue Italia Km 8, Rio Grande, Brazil
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2
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Radan M, Ćujić Nikolić N, Kuzmanović Nedeljković S, Mutavski Z, Krgović N, Stević T, Marković S, Jovanović A, Živković J, Šavikin K. Multifunctional Pomegranate Peel Microparticles with Health-Promoting Effects for the Sustainable Development of Novel Nutraceuticals and Pharmaceuticals. PLANTS (BASEL, SWITZERLAND) 2024; 13:281. [PMID: 38256834 PMCID: PMC10821027 DOI: 10.3390/plants13020281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Revised: 01/11/2024] [Accepted: 01/13/2024] [Indexed: 01/24/2024]
Abstract
Recovering the bioactive components from pomegranate peel (PP) in the fruit-processing industry has attracted great attention in terms of minimizing the waste burden, as well as providing a new source of a multitude of functional compounds. The present study aimed to develop a feasible microencapsulation process of PP extract by using pectin and a pectin/2-hydroxypropyl-β-cyclodextrin (HP-β-CD) blend as coating materials. Microsized powders obtained by a spray drying technique were examined in terms of technological characteristics, exhibiting high powder yield and desirable moisture content, flowability, and cohesive properties. Assuming that the interactions with the used biopolymers occur on the surface hydrophobic domain, their presence significantly improved the thermal stability of the microencapsulated powders up to 200 °C. The health-promoting effects of PP have been associated with its high content in ellagitannins, particularly punicalagin. The obtained PP powders exhibited strong antioxidant and hypoglycemic potential, while an antimicrobial assay revealed their potent activity against Gram-positive bacteria. Additionally, an in vitro release study suggested that the used biopolymers can modify the release of target bioactive compounds, thus establishing a basis for developing an oral-controlled release system. Altogether, biowaste valorization from PP by the production of effective multifunctional microsized powders represents a sustainable way to obtain novel nutraceuticals and/or pharmaceuticals.
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Affiliation(s)
- Milica Radan
- Institute for Medicinal Plants Research “Dr. Josif Pančić”, Tadeuša Košćuška 1, 11000 Belgrade, Serbia (T.S.)
| | - Nada Ćujić Nikolić
- Institute for Medicinal Plants Research “Dr. Josif Pančić”, Tadeuša Košćuška 1, 11000 Belgrade, Serbia (T.S.)
| | | | - Zorana Mutavski
- Institute for Medicinal Plants Research “Dr. Josif Pančić”, Tadeuša Košćuška 1, 11000 Belgrade, Serbia (T.S.)
| | - Nemanja Krgović
- Institute for Medicinal Plants Research “Dr. Josif Pančić”, Tadeuša Košćuška 1, 11000 Belgrade, Serbia (T.S.)
| | - Tatjana Stević
- Institute for Medicinal Plants Research “Dr. Josif Pančić”, Tadeuša Košćuška 1, 11000 Belgrade, Serbia (T.S.)
| | - Smilja Marković
- Institute of Technical Sciences of SASA, Knez Mihailova 35/IV, 11000 Belgrade, Serbia;
| | - Aleksandra Jovanović
- Institute for the Application of Nuclear Energy INEP, University of Belgrade, Banatska 31b, 11080 Belgrade, Serbia;
| | - Jelena Živković
- Institute for Medicinal Plants Research “Dr. Josif Pančić”, Tadeuša Košćuška 1, 11000 Belgrade, Serbia (T.S.)
| | - Katarina Šavikin
- Institute for Medicinal Plants Research “Dr. Josif Pančić”, Tadeuša Košćuška 1, 11000 Belgrade, Serbia (T.S.)
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3
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Sweidan N, Abu Rayyan W, Mahmoud I, Ali L. Phytochemical analysis, antioxidant, and antimicrobial activities of Jordanian Pomegranate peels. PLoS One 2023; 18:e0295129. [PMID: 38032959 PMCID: PMC10688686 DOI: 10.1371/journal.pone.0295129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Accepted: 11/15/2023] [Indexed: 12/02/2023] Open
Abstract
Pomegranate (Punica granatum) peels have shown numerous health benefits such as antioxidant, anti-inflammatory, and antimicrobial activities. These health activities are owed to the unique phytochemical components present in pomegranate peels. Variations in the pomegranate cultivar, geographical region, and extraction methods significantly affect the phytochemical composition and concentrations of pomegranate fruits and their peels, hence their health outcomes. Therefore, this study aimed to examine the phytochemical contents of pomegranate peels of Jordanian origin and their antioxidant and antimicrobial activities. Among the 6 extracts of pomegranate peels tested, the ethanol extract exhibited the highest total phenolic content (TPC = 297.70 ± 1.73 mg GAE/g DW), highest total flavonoids content (TFC = 116.08 ± 3.46 mg RE/g DW), highest hydrolyzable tannins (HT) contents (688.50 ± 3.54 mg TE/g DW). Whereas the highest condensed tannins (CT) content was found in both the ethanol (13.87 ± 0.58 mg CE/g DW) and methanol (13.84 ± 0.55 mg CE/g DW) extracts. For the antioxidant activities, the water extract of pomegranate peels displayed the highest inhibitory effect on DPPH radicals (9.43 ± 0.06 μmole TE/g DW), while for the ABTS+ assay the methanol and ethanol extracts exhibited the highest activities of 11.09 ± 0.02 and 11.09 ± 0.06 μmole TE/g DW, respectively. For the FRAP assay, the aqueous methanol extract exhibited the highest reducing activity (1.60 ± 0.09 mmole Fe (II)/g DW). As for the antimicrobial activities of various extracts of pomegranate peels, the highest antimicrobial activity against Micrococcus luteus was achieved by the ethanol extract (MIC = 6.25 mg/mL), whereas the lowest antimicrobial activity was observed against Candida krusei using the methanol extract (MIC = 100 mg/mL). These results indicate that pomegranate peels of Jordanian origin are rich in phytochemical content and exhibited strong antioxidant and antimicrobial activities making these agroindustrial by-products potential candidates for various medical applications and possible safe sources for important bioactive components.
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Affiliation(s)
- Nuha Sweidan
- Faculty of Arts and Sciences, Department of Chemistry, University of Petra, Amman, Jordan
| | - Walid Abu Rayyan
- Faculty of Science, Department of Medical Laboratory Analysis, Al-Balqa Applied University, Al-salt, Jordan
| | - Iman Mahmoud
- Faculty of Pharmacy, Department of Nutrition, University of Petra, Amman, Jordan
| | - Leen Ali
- Faculty of Arts and Sciences, Department of Chemistry, University of Petra, Amman, Jordan
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Di Nicolantonio L, Ferrati M, Cristino M, Peregrina DV, Zannotti M, Vitali LA, Ciancia SI, Giovannetti R, Ferraro S, Zara S, Di Valerio V, Cataldi A, Gigliobianco MR, Censi R, Di Martino P. Evaluation of Physicochemical and Microbial Properties of Extracts from Wine Lees Waste of Matelica’s Verdicchio and Their Applications in Novel Cosmetic Products. Antioxidants (Basel) 2023; 12:antiox12040816. [PMID: 37107191 PMCID: PMC10135395 DOI: 10.3390/antiox12040816] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 03/20/2023] [Accepted: 03/22/2023] [Indexed: 03/30/2023] Open
Abstract
Wine lees are sediments deposited on the walls and bottom of barrels resulting from wine fermentation and mainly consist of yeasts. Saccharomyces cerevisiae extracts, rich in beneficial components for the skin, have already been used in cosmesis, while wine lees have not been well exploited by the cosmetics industry yet. The aim of this work was the full characterization of the wine lees from Verdicchio’s wine, with the aim to exploit it as a beneficial ingredient in new cosmetic products. After mapping the microbial composition of the sample waste, the parameters for the sonication extraction process were optimized and the physicochemical properties of the extract were analyzed. The efficiency of the aqueous extraction—and in particular the yeast cell lysis necessary for the release of proteins from the cell—was assessed by evaluating cell shape and size, and protein release, under scanning electron microscopy (SEM), dynamic light scattering (DLS) and Bradford’s protein assays. Thus, the total phenol content and antioxidant capacity of the supernatant recovered from native and sonicated lees were determined by Folin–Ciocalteu’s and spectrophotometric assays, respectively. To quantify the heavy metals and highlight the presence of microelements beneficial for the skin, inductively coupled plasma-mass spectrometry (ICP-MS) was applied. In vitro metabolic activity and cytotoxicity were tested on both HaCat keratinocytes and human gingival fibroblasts, showing that wine lees are safe for skin’s cells. The results show that sonicated lees appear to be more interesting than native ones as a consequence of the release of the active ingredients from the cells. Due to the high antioxidant capacity, content of beneficial elements for skin and an appropriate microbiologic profile, wine lees were included in five new solid cosmetic products and tested for challenge test, compatibility with human skin, sensory analysis, trans epidermal water loss (TEWL) and sebometry.
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Affiliation(s)
- Lucrezia Di Nicolantonio
- Cosmetology Laboratory, University of Camerino, 62032 Camerino, Italy
- Recusol Srl, 62032 Camerino, Italy
| | - Marta Ferrati
- Chemistry Interdisciplinary Project (ChIP), School of Pharmacy, University of Camerino, Via Madonna delle Carceri 9/B, 62032 Camerino, Italy
| | | | | | - Marco Zannotti
- Chemistry Interdisciplinary Project (ChIP), School of Science and Technology, Chemistry Division, University of Camerino, Via Madonna delle Carceri, 62032 Camerino, Italy
| | - Luca Agostino Vitali
- Microbiology Unit, School of Pharmacy, University of Camerino, via Gentile III da Varano, 62032 Camerino, Italy
| | - Sonia Ilaria Ciancia
- Microbiology Unit, School of Pharmacy, University of Camerino, via Gentile III da Varano, 62032 Camerino, Italy
| | - Rita Giovannetti
- Chemistry Interdisciplinary Project (ChIP), School of Science and Technology, Chemistry Division, University of Camerino, Via Madonna delle Carceri, 62032 Camerino, Italy
| | - Stefano Ferraro
- Chemistry Interdisciplinary Project (ChIP), School of Science and Technology, Chemistry Division, University of Camerino, Via Madonna delle Carceri, 62032 Camerino, Italy
| | - Susi Zara
- Department of Pharmacy, University “G. d’Annunzio” Chieti-Pescara, Via dei Vestini 31, 66100 Chieti, Italy
| | - Valentina Di Valerio
- Department of Medicine and Aging Sciences, “G. d’ Annunzio” Chieti-Pescara, Via dei Vestini 31, 66100 Chieti, Italy
| | - Amelia Cataldi
- Department of Pharmacy, University “G. d’Annunzio” Chieti-Pescara, Via dei Vestini 31, 66100 Chieti, Italy
| | - Maria Rosa Gigliobianco
- Chemistry Interdisciplinary Project (ChIP), School of Pharmacy, University of Camerino, Via Madonna delle Carceri 9/B, 62032 Camerino, Italy
- Correspondence:
| | - Roberta Censi
- Cosmetology Laboratory, University of Camerino, 62032 Camerino, Italy
- Recusol Srl, 62032 Camerino, Italy
| | - Piera Di Martino
- Recusol Srl, 62032 Camerino, Italy
- Department of Pharmacy, University “G. d’Annunzio” Chieti-Pescara, Via dei Vestini 31, 66100 Chieti, Italy
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5
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Salim A, Deiana P, Fancello F, Molinu MG, Santona M, Zara S. Antimicrobial and Antibiofilm Activities of Pomegranate Peel Phenolic Compounds: Varietal Screening Through a Multivariate Approach. JOURNAL OF BIORESOURCES AND BIOPRODUCTS 2023. [DOI: 10.1016/j.jobab.2023.01.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
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Noor U, Soni S, Gupta E. Punica Granatum Peel Waste- An Underutilized Substrate of Therapeutic Potential: An Overview. RECENT ADVANCES IN FOOD, NUTRITION & AGRICULTURE 2022; 13:RAFNA-EPUB-127831. [PMID: 36424801 DOI: 10.2174/2772574x14666221124163344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2022] [Revised: 10/22/2022] [Accepted: 10/27/2022] [Indexed: 06/16/2023]
Abstract
India is the second largest consumer and producer of fruits globally. It leads to ample solid waste per year from fruit processing industries that have been proven hazardous to the surroundings. Punica granatum (Pomegranate) belongs to the Lythraceae subfamily Punicoideae, which exhibits immense nutritional properties and delicious flavoring components. The weight of this fruit mainly consists of peel, i.e., 50%, followed by 40% of arils and 10% of seeds. Thus, the major byproduct is a peel that holds many valuable bioactive compounds in higher concentrations viz saponins, carotenoids, steroids, polyphenols, quercetin derivatives, caffeic acid, phenolic acids, flavonoids, ellagitannins, p-coumaric acid, chlorogenic acid, quinic acid, anthocyanidins, triterpenoids, glycosides, tannins, and many more. Consequently, it results in wide-ranging therapeutic applications, including antioxidative, anti-microbial, antihypertensive, anti-carcinogenic, anti-genotoxic, anti-inflammatory, glucoregulation, cardio-protective, hepato-protective and nephroprotective effects along with prebiotic potential. Considering their nutritional and therapeutic aspects, these peels can be used for many purposes rather than being disposed of. With a value-added approach, it is utilized in many food and non-food sectors. So, this review aims to explore the therapeutic potential of P. granatum peel and enlighten its diverse applications in the food industry.
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Affiliation(s)
- Uroosa Noor
- Department of Family and Community Sciences, University of Allahabad 211002, India
| | - Shashi Soni
- Department of Family and Community Sciences, University of Allahabad 211002, India
| | - Ena Gupta
- Department of Family and Community Sciences, University of Allahabad 211002, India
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Lianza M, Marincich L, Antognoni F. The Greening of Anthocyanins: Eco-Friendly Techniques for Their Recovery from Agri-Food By-Products. Antioxidants (Basel) 2022; 11:2169. [PMID: 36358541 PMCID: PMC9717736 DOI: 10.3390/antiox11112169] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 10/25/2022] [Accepted: 10/26/2022] [Indexed: 10/29/2023] Open
Abstract
In recent years, several steps forward have been made toward a more sustainable approach for the extraction of bioactive compounds from plant materials based on the application of green extraction principles. It is currently recognized that waste and by-products deriving from agriculture and food industries still contain a wide array of high value-added substances, which can be re-used to obtain new products with various applications in the food, supplement, pharmaceutical, and cosmetic industries. Anthocyanins are a class of these valuable metabolites; they confer the red, violet, and blue color to fruits and vegetables, and scientific evidence has accumulated over the last few decades to support their beneficial effects on human health, in great part deriving from their powerful antioxidant capacity. This review provides a general overview of the most recent green procedures that have been applied for the recovery of anthocyanins from plant-derived wastes and by-products. The most widely used green solvents and the main sustainable techniques utilized for recovering this class of flavonoids from various matrices are discussed, together with the variables that mainly impact the extraction yield.
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Affiliation(s)
| | | | - Fabiana Antognoni
- Department for Life Quality Studies, Rimini Campus, University of Bologna, Corso d’Augusto 237, 47921 Rimini, Italy
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8
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Fernandes GL, Vieira APM, Danelon M, Emerenciano NG, Berretta AA, Buszinski AFM, Hori JI, de Lima MHF, dos Reis TF, de Lima JA, Delbem ACB, da Silva SCM, Barbosa DB. Pomegranate Extract Potentiates the Anti-Demineralizing, Anti-Biofilm, and Anti-Inflammatory Actions of Non-Alcoholic Mouthwash When Associated with Sodium-Fluoride Trimetaphosphate. Antibiotics (Basel) 2022; 11:1477. [PMID: 36358132 PMCID: PMC9686636 DOI: 10.3390/antibiotics11111477] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 09/27/2022] [Accepted: 10/19/2022] [Indexed: 12/01/2023] Open
Abstract
This study investigated the anti-caries and anti-inflammatory effects of mouthwash formulations containing Punica granatum (pomegranate) peel extract (PPE), sodium-trimetaphosphate, and low concentrations of fluoride. PPE was characterized using high-performance liquid chromatography (ellagic acid and punicalagin). Total phenolics were quantified among formulations, and their stability was analyzed for 28 days. The formulation effects were evaluated as follows: (1) inorganic component concentration and reduced demineralization on bovine enamel blocks subjected to pH cycling; (2) anti-biofilm effect on dual-biofilms of Streptococcus mutans ATCC 25175 and Candida albicans ATCC 10231 treated for 1 and 10 min, respectively; and (3) cytotoxicity and production of inflammatory mediators (interleukin-6 and tumor necrosis factor-alpha). The formulation containing 3% PPE, 0.3% sodium-trimetaphosphate, and 225 ppm of fluoride resulted in a 34.5% surface hardness loss; a 13% (treated for 1 min) and 36% (treated for 10 min) biofilm reduction in S. mutans; a 26% (1 min) and 36% (10 min) biofilm reduction in C. albicans; absence of cytotoxicity; and anti-inflammatory activity confirmed by decreased interleukin-6 production in mouse macrophages. Thus, our results provide a promising prospect for the development of an alcohol-free commercial dental product with the health benefits of P. granatum that have been recognized for a millennium.
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Affiliation(s)
- Gabriela Lopes Fernandes
- Graduate Program of Dental Science, School of Dentistry, Araçatuba, São Paulo State University (UNESP), Araçatuba 16015-050, São Paulo, Brazil
| | - Ana Paula Miranda Vieira
- Graduate Program of Dental Science, School of Dentistry, Araçatuba, São Paulo State University (UNESP), Araçatuba 16015-050, São Paulo, Brazil
| | - Marcelle Danelon
- School of Dentistry, University of Ribeirão Preto—UNAERP, Ribeirão Preto 14096-039, São Paulo, Brazil
- Department of Restorative Dentistry, School of Dentistry, Araçatuba, São Paulo State University (UNESP), Araçatuba 16015-050, São Paulo, Brazil
| | - Nayara Gonçalves Emerenciano
- Graduate Program of Dental Science, School of Dentistry, Araçatuba, São Paulo State University (UNESP), Araçatuba 16015-050, São Paulo, Brazil
| | | | | | - Juliana Issa Hori
- Apis Flora Industrial and Comercial Ltd. Ribeirão Preto 14020-670, São Paulo, Brazil
| | - Mikhael Haruo Fernandes de Lima
- Department of Biochemistry and Immunology, University of São Paulo Ribeirão Preto, Ribeirão Preto 14049-900, São Paulo, Brazil
| | - Thaila Fernanda dos Reis
- Department of Dental Materials and Prosthodontics, School of Dentistry, Araçatuba, São Paulo State University (UNESP), Araçatuba 16015-050, São Paulo, Brazil
| | | | - Alberto Carlos Botazzo Delbem
- Department of Restorative Dentistry, School of Dentistry, Araçatuba, São Paulo State University (UNESP), Araçatuba 16015-050, São Paulo, Brazil
| | | | - Debora Barros Barbosa
- Department of Dental Materials and Prosthodontics, School of Dentistry, Araçatuba, São Paulo State University (UNESP), Araçatuba 16015-050, São Paulo, Brazil
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El-Beltagi HS, Eshak NS, Mohamed HI, Bendary ESA, Danial AW. Physical Characteristics, Mineral Content, and Antioxidant and Antibacterial Activities of Punica granatum or Citrus sinensis Peel Extracts and Their Applications to Improve Cake Quality. PLANTS 2022; 11:plants11131740. [PMID: 35807697 PMCID: PMC9268770 DOI: 10.3390/plants11131740] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Revised: 06/28/2022] [Accepted: 06/29/2022] [Indexed: 12/03/2022]
Abstract
One-third of all food produced for human use is discarded as waste, resulting in environmental pollution and impaired food security. Fruit peels have bioactive compounds that may be used as antimicrobials and antioxidants, and the use of fruit peels is considered an alternative way to reduce environmental problems and agro-industrial waste. The aim of this study was to evaluate the phytochemical, mineral, extraction yield, total phenolic, total flavonoids, antioxidant, and antibacterial activity of several peel fruits, including Citrus sinensis (orange) and Punica granatum (pomegranate). The results revealed that pomegranate peel powder contains the highest amounts of ash, fiber, total carbohydrates, Ca, Fe, Mg, and Cu, while orange peel contains the highest amounts of moisture, protein, crude fat, P, and K. Furthermore, the aqueous and methanolic pomegranate peel extracts yielded higher total phenolic and total flavonoids than the orange peel extract. The identification and quantification of polyphenol compounds belonging to different classes, such as tannins, phenolic acids, and flavonoids in pomegranate peel and flavonoid compounds in orange peel were performed using UPLC-MS/MS. In addition, GC-MS analysis of orange peel essential oil discovered that the predominant compound is D-Limonene (95.7%). The aqueous and methanolic extracts of pomegranate peel were proven to be efficient against both gram-positive and gram-negative bacteria linked to human infections. Sponge cake substituting wheat flour with 3% pomegranate peel and 10% orange peel powder had the highest total phenolic, flavonoid compounds, and antioxidant activity as compared to the control cake. Our results concluded that pomegranate and orange peel flour can be used in cake preparation and natural food preservers.
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Affiliation(s)
- Hossam S. El-Beltagi
- Agricultural Biotechnology Department, College of Agricultural and Food Science, King Faisal University, P.O. Box 400, Al-Ahsa 31982, Saudi Arabia
- Biochemistry Department, Faculty of Agriculture, Cairo University, Giza 12613, Egypt
- Correspondence: (H.S.E.-B.); or (H.I.M.); (A.W.D.)
| | - Nareman S. Eshak
- Home Economics Department, Faculty of Specific Education, Assiut University, Assiut 71516, Egypt;
| | - Heba I. Mohamed
- Biological and Geological Sciences Department, Faculty of Education, Ain Shams University, Cairo 11341, Egypt
- Correspondence: (H.S.E.-B.); or (H.I.M.); (A.W.D.)
| | - Eslam S. A. Bendary
- Biochemistry Department, Faculty of Agriculture, Ain Shams University, Cairo 11241, Egypt;
| | - Amal W. Danial
- Botany and Microbiology Department, Faculty of Science, Assiut University, Assiut 71516, Egypt
- Correspondence: (H.S.E.-B.); or (H.I.M.); (A.W.D.)
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