1
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Dai L, Yan J, Xia Q, Wang S, Zhou Q, Zhang J, Wen C. Inhibition on α‐amylase and α‐glucosidase of polysaccharides from
Inonotus obliquus
and effects on delaying the digestion of polysaccharides‐dough system. STARCH-STARKE 2022. [DOI: 10.1002/star.202100300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Li‐jun Dai
- College of Food Science and Technology Huazhong Agricultural University Wuhan 430070 China
| | - Jia‐xing Yan
- College of Food Science and Technology Huazhong Agricultural University Wuhan 430070 China
| | - Qing Xia
- College of Food Science and Technology Huazhong Agricultural University Wuhan 430070 China
| | - Shi‐qi Wang
- College of Food Science and Technology Huazhong Agricultural University Wuhan 430070 China
| | - Qing Zhou
- Department of Pharmacy Wuhan City Central Hospital Tongji Medical College Huazhong University of Science and Technology Wuhan 430014 China
| | - Jiu‐liang Zhang
- College of Food Science and Technology Huazhong Agricultural University Wuhan 430070 China
| | - Chong Wen
- Clinical College of Traditional Chinese Medicine Hubei University of Chinese Medicine Wuhan 430061 China
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2
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Aouadi K, Hajlaoui H, Arraouadi S, Ghannay S, Snoussi M, Kadri A. Phytochemical Profiling, Antimicrobial and α-Glucosidase Inhibitory Potential of Phenolic-Enriched Extracts of the Aerial Parts from Echium humile Desf.: In Vitro Combined with In Silico Approach. PLANTS (BASEL, SWITZERLAND) 2022; 11:1131. [PMID: 35567133 PMCID: PMC9105953 DOI: 10.3390/plants11091131] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Revised: 04/16/2022] [Accepted: 04/19/2022] [Indexed: 06/15/2023]
Abstract
The current study aimed to evaluate the naturally occurring antimicrobial and antidiabetic potential of various Echium humile (E. humile) solvent extracts (hexane, dichloromethane, ethyl acetate, methanol and aqueous). The bioactive compounds were identified using HPLC-MS, revealing the presence of sixteen phytochemical compounds, with the most abundant being p-coumaric acid, followed by 4,5-di-O-caffeoylquinic acid, trans-ferulic acid and acacetin. Furthermore, E. humile extracts showed marked antimicrobial properties against human pathogen strains, with MIC values for the most relevant extracts (methanol and ethyl acetate) ranging from 0.19 to 6.25 mg/mL and 0.39 to 12.50 mg/mL, respectively. Likewise, methanol was found to be bactericidal towards S. aureus, B. cereus and M. luteus, fungicidal against P. catenulatum and F. oxysporum and have a bacteriostatic/fungicidal effect for the other strains. In addition, the E. humile methanolic extract had the greatest α-glucosidase inhibitory effect (IC50 = 0.06 ± 0.29 mg/mL), which is higher than the standard drug, acarbose (IC50 = 0.80 ± 1.81 mg/mL) and the aqueous extract (IC50 = 0.70 ± 0.67 mg/mL). A correlation study between the major phytochemicals and the evaluated activities was investigated. Docking studies evidenced that most of the identified phenolic compounds showed strong interactions into the binding sites of S. aureus tyrosyl-tRNA synthetase and human lysosomal acid-α-glucosidase, confirming their suitable inhibitory effect. In summary, these results may provide rational support to explore the clinical efficacy of E. humile and its secondary metabolites in the treatment of dual diabetes and infections.
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Affiliation(s)
- Kaïss Aouadi
- Department of Chemistry, College of Science, Qassim University, Buraidah 51452, Saudi Arabia; (K.A.); (S.G.)
- Department of Chemistry, Faculty of Sciences of Monastir, University of Monastir, Avenue of the Environment, Monastir 5019, Tunisia
| | - Hafedh Hajlaoui
- Research Unit Valorization and Optimization of Resource Exploitation (UR16ES04), Faculty of Science and Technology of Sidi Bouzid, Campus University Agricultural City, University of Kairouan, Sidi Bouzid 9100, Tunisia;
| | - Soumaya Arraouadi
- Regional Center of Agricultural Research (CRRA) Sidi Bouzid, Gafsa Road Km 6, PB 357, Sidi Bouzid 9100, Tunisia;
- Research Laboratory, Valorization of Non-Conventional Waters, University of Carthage, Road Hedi EL Karray, El Menzah IV, PB 10, Ariana 2080, Tunisia
| | - Siwar Ghannay
- Department of Chemistry, College of Science, Qassim University, Buraidah 51452, Saudi Arabia; (K.A.); (S.G.)
| | - Mejdi Snoussi
- Department of Biology, College of Science, Hail University, Ha’il 2440, Saudi Arabia;
- Laboratory of Genetic, Biodiversity and Valorization of Bioressources, Higher Institute of Bio-Technology of Monastir, University of Monastir, Avenue Taher Hadded, B.P. 74, Monastir 5000, Tunisia
| | - Adel Kadri
- Department of Chemistry, Faculty of Science of Sfax, University of Sfax, B.P. 1171, Sfax 3000, Tunisia
- Faculty of Science and Arts in Baljurashi, Albaha University, Albaha 65527, Saudi Arabia
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Masullo M, Lauro G, Cerulli A, Bifulco G, Piacente S. Corylus avellana: A Source of Diarylheptanoids With α-Glucosidase Inhibitory Activity Evaluated by in vitro and in silico Studies. FRONTIERS IN PLANT SCIENCE 2022; 13:805660. [PMID: 35237285 PMCID: PMC8882611 DOI: 10.3389/fpls.2022.805660] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/30/2021] [Accepted: 01/11/2022] [Indexed: 06/14/2023]
Abstract
Corylus avellana hard shells, green leafy involucres, leaves, and male flowers have shown to be a source of diarylheptanoids, a class of natural products with promising biological activities. Cyclic diarylheptanoids, named giffonins, were isolated from the Italian cultivar "Tonda di Giffoni." Even if many efforts have been made to establish the chemistry of these compounds, little is known about their biological properties. Herein, the inhibitory effects of diarylheptanoids isolated from C. avellana byproducts against α-glucosidase enzyme were evaluated. Molecular docking experiments disclosed the establishment of several key interactions between all the screened diarylheptanoids and the protein counterpart, whose model was built through homology modeling procedure, thus rationalizing the detected inhibitory activities. Specifically, the most active compounds giffonin J (10), K (11), and P (16) were able to make both H-bonds and π-π stacking contacts with different residues belonging to the binding site responsible for the catalytic activity of the investigated enzyme. To highlight the occurrence of the bioactive diarylheptanoids in the extracts of C. avellana byproducts obtained by eco-friendly extractions, their LC-MS profiles were analyzed. LC-MS analysis showed how giffonin J (10), K (11), and P (16) occurred in the ethanol extract of the leaves, while in the extracts of shells and green leafy involucres only giffonin P (16) was evident. Moreover, the quantitative analysis of giffonin J (10), K (11), and P (16) in C. avellana byproducts was carried out by an analytical approach based on LC-ESI/QTrap/MS, using the Multiple Reaction Monitoring (MRM) experiment. These results prompt to evaluate C. avellana byproducts, especially the leaves, as a prospective source of bioactive diarylheptanoids for the development of functional ingredients for the treatment of diabetes.
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Studzińska-Sroka E, Galanty A, Gościniak A, Wieczorek M, Kłaput M, Dudek-Makuch M, Cielecka-Piontek J. Herbal Infusions as a Valuable Functional Food. Nutrients 2021; 13:nu13114051. [PMID: 34836310 PMCID: PMC8622958 DOI: 10.3390/nu13114051] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 11/08/2021] [Accepted: 11/10/2021] [Indexed: 01/11/2023] Open
Abstract
Herbal infusions are an underestimated and easy to intake a source of biologically active natural compounds (polyphenols), which, in the dissolved form, are more easily absorbed. Therefore, this study aimed to assess the potential of herbal infusions as a functional food to reduce postprandial hyperglycemia (inhibition of α-amylase and α-glucosidase) and to reduce the effects of increased blood glucose level (antioxidant effect-DPPH, CUPRAC, and Fe2+ chelating assays, as well as anti-inflammatory activity-inhibition of collagenase). We showed that polyphenols are present in the examined aqueous herbal infusions (including chlorogenic and gallic acids). Subsequently, our research has shown that herbal infusions containing cinnamon bark, mulberry leaves, and blackberry fruits most strongly inhibit glucose release from complex carbohydrates, and that all herbal infusions can, to different degrees, reduce the effects of elevated blood sugar. In conclusion, infusions prepared from herbal blends could be recommended to prevent type II diabetes.
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Affiliation(s)
- Elżbieta Studzińska-Sroka
- Department of Pharmacognosy, Poznan University of Medical Sciences, Swiecickiego 4, 60-781 Poznań, Poland; (A.G.); (M.W.); (M.D.-M.); (J.C.-P.)
- Correspondence:
| | - Agnieszka Galanty
- Department of Pharmacognosy, Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9, 30-688 Kraków, Poland;
| | - Anna Gościniak
- Department of Pharmacognosy, Poznan University of Medical Sciences, Swiecickiego 4, 60-781 Poznań, Poland; (A.G.); (M.W.); (M.D.-M.); (J.C.-P.)
| | - Mateusz Wieczorek
- Department of Pharmacognosy, Poznan University of Medical Sciences, Swiecickiego 4, 60-781 Poznań, Poland; (A.G.); (M.W.); (M.D.-M.); (J.C.-P.)
| | - Magdalena Kłaput
- Department of Pediatric Gastroenterology and Metabolic Diseases, Poznan University of Medical Sciences, 27/33 Szpitalna Str., 60-572 Poznań, Poland;
| | - Marlena Dudek-Makuch
- Department of Pharmacognosy, Poznan University of Medical Sciences, Swiecickiego 4, 60-781 Poznań, Poland; (A.G.); (M.W.); (M.D.-M.); (J.C.-P.)
| | - Judyta Cielecka-Piontek
- Department of Pharmacognosy, Poznan University of Medical Sciences, Swiecickiego 4, 60-781 Poznań, Poland; (A.G.); (M.W.); (M.D.-M.); (J.C.-P.)
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Cardullo N, Floresta G, Rescifina A, Muccilli V, Tringali C. Synthesis and in vitro evaluation of chlorogenic acid amides as potential hypoglycemic agents and their synergistic effect with acarbose. Bioorg Chem 2021; 117:105458. [PMID: 34736132 DOI: 10.1016/j.bioorg.2021.105458] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Revised: 10/15/2021] [Accepted: 10/25/2021] [Indexed: 01/01/2023]
Abstract
Type 2 Diabetes mellitus is a chronic disease considered one of the most severe global health emergencies. Chlorogenic acid (1) has been shown to delay intestinal glucose absorption by inhibiting the activity of α-glucosidase (α-Glu) and α-amylase (α-Amy). In the present work, eleven chlorogenic acid amides have been synthesized and evaluated for their antioxidant properties (as DPPH and ORAC) and inhibition activity towards the two enzymes and, with the aim to obtain dual-action antidiabetic agents. The two most promising hypoglycemic compounds, bearing a tertiary amine function on an alkyl chain (8) and a benzothiazole scaffold (11), showed IC50 values lower than that of (1) (45.5 µM α-Glu; 105.2 µM α-Amy). Amides 8 and 11 were by far more potent α-Glu inhibitors than the antidiabetic drug acarbose (IC50 = 268.4 µM) and about twice less active toward α-Amy than acarbose (IC50 = 34.4 µM). Kinetics experiments on amides 8 and 11 indicated these compounds as mixed-type inhibitors of α-Glu with K'i values of 13.3 and 6.3 µM, respectively. The amylase inhibition occurred with a competitive mechanism in the presence of 8 (Ki = 79.7 µM) and with a mixed-type mechanism with 11 (Ki = 19.1 µM; K'i = 93.6 µM). Molecular docking analyses supported these results, highlighting the presence of additional binding sites in both enzymes. Fluorescence experiments confirmed the grater affinity of amides 8 and 11 towards the two enzymes respect to (1). Moreover, a significant enhancement in acarbose efficacy was observed when inhibition assays were performed adding acarbose and amide 11. The above outcomes pinpointed the benzothiazole-based amide 11 as a promising candidate for further studies on type 2 diabetes treatment, both alone or combined with acarbose.
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Affiliation(s)
- Nunzio Cardullo
- Dipartimento di Scienze Chimiche, Università degli Studi di Catania, V.le A. Doria 6, Catania 95125, Italy.
| | - Giuseppe Floresta
- Department of Analytical, Environmental and Forensic Sciences, King's College London, 150 Stamford Street, London SE1 9NH, UK.
| | - Antonio Rescifina
- Dipartimento di Scienze del Farmaco e della Salute, Università degli Studi di Catania, V.le A. Doria 6, Catania 95125, Italy.
| | - Vera Muccilli
- Dipartimento di Scienze Chimiche, Università degli Studi di Catania, V.le A. Doria 6, Catania 95125, Italy.
| | - Corrado Tringali
- Dipartimento di Scienze Chimiche, Università degli Studi di Catania, V.le A. Doria 6, Catania 95125, Italy.
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Mashitoa FM, Manhivi VE, Akinola SA, Garcia C, Remize F, Shoko T, Sivakumar D. Changes in phenolics and antioxidant capacity during fermentation and simulated in vitro digestion of mango puree fermented with different lactic acid bacteria. J FOOD PROCESS PRES 2021. [DOI: 10.1111/jfpp.15937] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Florence M. Mashitoa
- Phytochemical Food Network Group Department of Crop Sciences Tshwane University of Technology Pretoria West South Africa
| | - Vimbainashe E. Manhivi
- Phytochemical Food Network Group Department of Crop Sciences Tshwane University of Technology Pretoria West South Africa
| | - Stephen A. Akinola
- Phytochemical Food Network Group Department of Crop Sciences Tshwane University of Technology Pretoria West South Africa
| | - Cyrielle Garcia
- Qualisud Univ MontpellierCIRAD, Institut AgroAvignon UniversitéUniv de La RéunionESIROI Montpellier France
| | - Fabienne Remize
- Qualisud Univ MontpellierCIRAD, Institut AgroAvignon UniversitéUniv de La RéunionESIROI Montpellier France
| | - Tinotenda Shoko
- Phytochemical Food Network Group Department of Crop Sciences Tshwane University of Technology Pretoria West South Africa
| | - Dharini Sivakumar
- Phytochemical Food Network Group Department of Crop Sciences Tshwane University of Technology Pretoria West South Africa
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Antioxidant Activity, α-Glucosidase Inhibition and UHPLC-ESI-MS/MS Profile of Shmar ( Arbutus pavarii Pamp). PLANTS 2021; 10:plants10081659. [PMID: 34451703 PMCID: PMC8398081 DOI: 10.3390/plants10081659] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 05/17/2021] [Accepted: 05/22/2021] [Indexed: 01/09/2023]
Abstract
The genus Arbutus (Ericaceae) has been traditionally used in folk medicine due to its phytomedicinal properties, especially Arbutus pavarii Pamp. However, this plant has not been evaluated for its efficacy, quality, and consistency to support the traditional uses, potentially in treating diabetes. Despite previous studies that revealed the biological activities of A. pavarii as antioxidant and α-glucosidase inhibitory agents, scientific reports on the bioactive compounds that contribute to its health benefits are still scarce. Therefore, this research focused on the evaluation of antioxidant and α-glucosidase inhibitory activities of the methanol crude extracts and various fractions of the leaf and stem bark, as well as on metabolite profiling of the methanol crude extracts. The extracts and fractions were evaluated for total phenolic (TPC) and total flavonoid (TFC) contents, as well as the DPPH free radical scavenging, ferric reducing antioxidant power (FRAP), and α-glucosidase inhibitory activities. Methanol crude extracts of the leaf and stem bark were then subjected to UHPLC-ESI-MS/MS. To the best of our knowledge, the comparative evaluation of the antioxidant and α-glucosidase inhibitory activities of the leaf and stem bark of A. pavarii, as well as of the respective solvent fractions, is reported herein for the first time. Out of these extracts, the methanolic crude extracts and polar fractions (ethyl acetate and butanol fractions) showed significant bioactivities. The DPPH free radical and α-glucosidase inhibitions was highest in the leaf ethyl acetate fraction, with IC50 of 6.39 and 4.93 µg/mL, respectively, while the leaf methanol crude extract and butanol fraction exhibited the highest FRAP with 82.95 and 82.17 mmol Fe (II)/g extract. The UHPLC-ESI-MS/MS analysis resulted in the putative identification of a total of 76 compounds from the leaf and stem bark, comprising a large proportion of plant phenolics (flavonoids and phenolic acids), terpenoids, and fatty acid derivatives. Results from the present study showed that the different parts of A. pavarii had potent antioxidant and α-glucosidase inhibitory activities, which could potentially prevent oxidative damage or diabetes-related problems. These findings may strengthen the traditional claim on the medicinal value of A. pavarii.
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Fatchurrahman D, Nosrati M, Amodio ML, Chaudhry MMA, de Chiara MLV, Mastrandrea L, Colelli G. Comparison Performance of Visible-NIR and Near-Infrared Hyperspectral Imaging for Prediction of Nutritional Quality of Goji Berry ( Lycium barbarum L.). Foods 2021; 10:1676. [PMID: 34359546 PMCID: PMC8306078 DOI: 10.3390/foods10071676] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 07/10/2021] [Accepted: 07/14/2021] [Indexed: 11/17/2022] Open
Abstract
The potential of hyperspectral imaging for the prediction of the internal composition of goji berries was investigated. The prediction performances of models obtained in the Visible-Near Infrared (VIS-NIR) (400-1000 nm) and in the Near Infrared (NIR) (900-1700 nm) regions were compared. Analyzed constituents included Vitamin C, total antioxidant, phenols, anthocyanin, soluble solids content (SSC), and total acidity (TA). For vitamin C and AA, partial least square regression (PLSR) combined with different data pretreatments and wavelength selection resulted in a satisfactory prediction in the NIR region obtaining the R2pred value of 0.91. As for phenols, SSC, and TA, a better performance was obtained in the VIS-NIR region yielding the R2pred values of 0.62, 0.94, and 0.84, respectively. However, the prediction of total antioxidant and anthocyanin content did not give satisfactory results. Conclusively, hyperspectral imaging can be a useful tool for the prediction of the main constituents of the goji berry (Lycium barbarum L.).
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Affiliation(s)
- Danial Fatchurrahman
- Dipartimento di Scienze Agrarie, degli Alimenti e dell’Ambiente, Università di Foggia, Via Napoli 25, 71122 Foggia, Italy; (D.F.); (M.N.); (M.M.A.C.); (M.L.V.d.C.); (L.M.); (G.C.)
- Department of Agricultural Engineering, Faculty of Agricultural Technology, University of Brawijaya, Jl. Veteran, Malang 65145, Indonesia
| | - Mojtaba Nosrati
- Dipartimento di Scienze Agrarie, degli Alimenti e dell’Ambiente, Università di Foggia, Via Napoli 25, 71122 Foggia, Italy; (D.F.); (M.N.); (M.M.A.C.); (M.L.V.d.C.); (L.M.); (G.C.)
| | - Maria Luisa Amodio
- Dipartimento di Scienze Agrarie, degli Alimenti e dell’Ambiente, Università di Foggia, Via Napoli 25, 71122 Foggia, Italy; (D.F.); (M.N.); (M.M.A.C.); (M.L.V.d.C.); (L.M.); (G.C.)
| | - Muhammad Mudassir Arif Chaudhry
- Dipartimento di Scienze Agrarie, degli Alimenti e dell’Ambiente, Università di Foggia, Via Napoli 25, 71122 Foggia, Italy; (D.F.); (M.N.); (M.M.A.C.); (M.L.V.d.C.); (L.M.); (G.C.)
| | - Maria Lucia Valeria de Chiara
- Dipartimento di Scienze Agrarie, degli Alimenti e dell’Ambiente, Università di Foggia, Via Napoli 25, 71122 Foggia, Italy; (D.F.); (M.N.); (M.M.A.C.); (M.L.V.d.C.); (L.M.); (G.C.)
| | - Leonarda Mastrandrea
- Dipartimento di Scienze Agrarie, degli Alimenti e dell’Ambiente, Università di Foggia, Via Napoli 25, 71122 Foggia, Italy; (D.F.); (M.N.); (M.M.A.C.); (M.L.V.d.C.); (L.M.); (G.C.)
| | - Giancarlo Colelli
- Dipartimento di Scienze Agrarie, degli Alimenti e dell’Ambiente, Università di Foggia, Via Napoli 25, 71122 Foggia, Italy; (D.F.); (M.N.); (M.M.A.C.); (M.L.V.d.C.); (L.M.); (G.C.)
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Moldovan C, Babotă M, Mocan A, Menghini L, Cesa S, Gavan A, Sisea C, Vodnar DC, Dias MI, Pereira C, Ferreira ICFR, Crişan G, Barros L. Optimization of the drying process of autumn fruits rich in antioxidants: a study focusing on rosehip ( Rosa canina L.) and sea buckthorn ( Elaeagnus rhamnoides (L.) A. Nelson) and their bioactive properties. Food Funct 2021; 12:3939-3953. [PMID: 33977959 DOI: 10.1039/d0fo02783a] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Nowadays, it is very important to identify the traditional uses of different plants and to create the context in which new cultural or economic value is given to local resources. In this study, two wild fruits traditionally harvested in autumn in Romania were selected to investigate the effects of drying conditions on the chemical compositions and bioactivities exerted by the extracts and to select the best conditions in terms of air temperature and time of drying. The extracts obtained were assessed in terms of antioxidant capacity and enzyme inhibitory activity, and their main bioactive compounds were identified and quantified. The data presented in this article represent a step forward in applying this process on an industrial-scale.
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Affiliation(s)
- Cadmiel Moldovan
- Faculty of Pharmacy, "Iuliu HaŢieganu" University of Medicine and Pharmacy, 8 Victor Babeş Street, 400012 Cluj-Napoca, Romania.
| | - Mihai Babotă
- Faculty of Pharmacy, "Iuliu HaŢieganu" University of Medicine and Pharmacy, 8 Victor Babeş Street, 400012 Cluj-Napoca, Romania.
| | - Andrei Mocan
- Faculty of Pharmacy, "Iuliu HaŢieganu" University of Medicine and Pharmacy, 8 Victor Babeş Street, 400012 Cluj-Napoca, Romania. and Laboratory of Chromatography, Institute of Advanced Horticulture Research of Transylvania, University of Agricultural Sciences and Veterinary Medicine, 400372 Cluj-Napoca, Romania
| | - Luigi Menghini
- Department of Pharmacy, "G. d'Annunzio" University of Chieti-Pescara, Via dei Vestini 31, 66100 Chieti, Italy
| | - Stefania Cesa
- Department of Drug Chemistry and Technologies, University "Sapienza" of Rome, P.le Aldo Moro 5, 00185 Rome, Italy
| | - Alexandru Gavan
- Faculty of Pharmacy, "Iuliu HaŢieganu" University of Medicine and Pharmacy, 8 Victor Babeş Street, 400012 Cluj-Napoca, Romania.
| | - Cristian Sisea
- Faculty of Horticulture, University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, 400372 Cluj-Napoca, Romania
| | - Dan C Vodnar
- Faculty of Food Science and Technology, University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, Calea Mănăştur 3-5, 400372 Cluj-Napoca, Romania
| | - Maria Inês Dias
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal.
| | - Carla Pereira
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal.
| | - Isabel C F R Ferreira
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal.
| | - Gianina Crişan
- Faculty of Pharmacy, "Iuliu HaŢieganu" University of Medicine and Pharmacy, 8 Victor Babeş Street, 400012 Cluj-Napoca, Romania.
| | - Lillian Barros
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal.
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Wang L, Ahmad S, Wang X, Li H, Luo Y. Comparison of Antioxidant and Antibacterial Activities of Camellia Oil From Hainan With Camellia Oil From Guangxi, Olive Oil, and Peanut Oil. Front Nutr 2021; 8:667744. [PMID: 34012974 PMCID: PMC8126635 DOI: 10.3389/fnut.2021.667744] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2021] [Accepted: 04/09/2021] [Indexed: 11/13/2022] Open
Abstract
Background/Aim: Camellia oil from Hainan (SY) is a unique vegetable oil in Hainan, China, due to the geographical environment and oil extraction only through simple physical treatments. To compare SY with camellia oil from Guangxi (SC), olive oil (GL), and peanut oil (HS), this study analyzed the antioxidant and antibacterial activity of four vegetable oils. Methods: Using Gallic acid, BHT as the control, Saccharomyces cerevisiae as the model organism, the antioxidant activities of vegetable oils were measured in vitro and in vivo, and the antibacterial activity was measured with the minimum inhibitory concentration (MIC) method. Results: The major contents of SY, SC, and HS were oleic Acid; the major content of GL was squalene. The highest total flavonoids content of SY was 39.50 ± 0.41 mg RE/g DW; and the highest total phenolic content of SC was 47.05 ± 0.72 mg GAE/g DW. SY exhibited the strongest scavenging activity of hydroxyl radical (HO·) and superoxide anions (O2-·), the IC50 value were 2.06 mg/mL, 0.62 mg/mL, respectively; and SC showed the strongest DPPH· and ABTS· scavenging activity and the reducing abilities. SY showed excellent effect on survival rate, protection rate, flavonoids uptake of S. cerevisiae cells, decreased MDA content and ROS level, inhibited CAT, POD, and GR enzyme activity. The absorption of SC total phenols was the highest by cells. The activity showed GL had a broad-spectrum antibacterial activity. Conclusion: Thus, SY shows potential antioxidant activity and provides an important reference value for people to choose edible vegetable oils.
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Affiliation(s)
- Lanying Wang
- College of Plant Protection, Hainan University, Haikou, China
| | - Shakil Ahmad
- College of Plant Protection, Hainan University, Haikou, China
| | - Xi Wang
- College of Plant Protection, Hainan University, Haikou, China
| | - Hua Li
- College of Plant Protection, Hainan University, Haikou, China
| | - Yanping Luo
- College of Plant Protection, Hainan University, Haikou, China
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Siahbalaei R, Kavoosi G, Shakeri R. In vitro antioxidant and antidiabetic activity of essential oils encapsulated in gelatin-pectin particles against sugar, lipid and protein oxidation and amylase and glucosidase activity. Food Sci Nutr 2020; 8:6457-6466. [PMID: 33312531 PMCID: PMC7723207 DOI: 10.1002/fsn3.1935] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 09/16/2020] [Accepted: 09/19/2020] [Indexed: 12/24/2022] Open
Abstract
The in vitro antioxidant and antidiabetic activities of Oliveria decumbens, Thymus kotschyanus, Trachyspermum ammi, and Zataria multiflora essential oils incorporated into gelatin-pectin composite were investigated. The gas chromatography-mass spectrometry characterization revealed that thymol (1.2%-86.4%), carvacrol (3.2%-52.4%), gamma-terpinene (0.0%-12.7%), para-cymene (3.2%-5.2%), geraniol (0.0%-14.5%), and spathulenol (0.0%-13.6%) are the major constituents of the essential oils. Gelatin-pectin composite incorporated with the essential oils exhibited acidic pH (2.40-3.04), low conductivity (265-278 µS/cm), low surface tension (19.0-23.5 mN/m), low Newtonian viscosity (23.7-28.5 mPa.s), negative zeta-potential (14.2-16.9 mV), and nanoscale particle size (313-336 nm). These rheological properties result in the production of globular gelatin-pectin nanoparticles with a size range of 500-700 nm. The FTIR spectra of gelatin-pectin and gelatin-pectin-essential oils to some extent were similar, suggesting the noncovalent interactions between them. Gelatin-pectin composite incorporated with the essential oils displayed antiglucose oxidation (130-150 µg/ml) antilipid peroxidation (120-130 µg/ml), antiprotein oxidation (150-168 µg/ml), and antiprotein glycation (145-170 µg/ml) as well as antiamylase (216-230 µg/ml), and antiglucosidase (212-238 µg/ml) activity. The essential oils strongly improved the antioxidant capacity of the gelatin-pectin composite so strongly which can be recommended as a natural compound for oxidative stress management.
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Affiliation(s)
- Roghayeh Siahbalaei
- Institute of Biotechnology, School of AgricultureShiraz UniversityShirazIslamic Republic of Iran
| | - Gholamreza Kavoosi
- Institute of Biotechnology, School of AgricultureShiraz UniversityShirazIslamic Republic of Iran
| | - Raheleh Shakeri
- Department of Biological Sciences and BiotechnologyFaculty of SciencesUniversity of KurdistanSanandajIran
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α-Glucosidase Inhibitory Activity of Tannat Grape Phenolic Extracts in Relation to Their Ripening Stages. Biomolecules 2020; 10:biom10081088. [PMID: 32707893 PMCID: PMC7464188 DOI: 10.3390/biom10081088] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Revised: 07/09/2020] [Accepted: 07/15/2020] [Indexed: 12/16/2022] Open
Abstract
The present study aimed to screen grape extracts as novel α-glucosidase inhibitors to prevent type-2 diabetes and hyperglycemia. The total polyphenol content (TPC) was measured by Folin-Ciocalteu assay and the stilbene, anthocyanin and flavan-3-ol compounds were measured by Ultra High-Performance Liquid Chromatography coupled to Mass Spectrometry (UHPLC-MS). The α-glucosidase inhibitory of seed and skin Tannat grape extracts at four ripening stages were investigated. The highest TPC values were measured in seeds at the “veraison stage” (65.29 ± 5.33 g of Gallic Acid Equivalent (GAE) per kilogram of Fresh Weight (FW)). This was in accordance with the high flavan-3-ol contents measured for these two extracts (43.22 ± 2.59 and 45.45 ± 6.48 g/kg of seeds FW, respectively). The skin and seed extracts at the first stage of ripening exerted strong α-glucosidase inhibition, exceeding 95% (p < 0.05). A high linear correlation (R = 0.723, p ≤ 0.05) was observed between flavan-3-ol contents and the α-glucosidase inhibitory activity. The stilbene contents and this activity were moderately to strongly anti-correlated (R = –0.828, p ≤ 0.05 for trans-resveratrol). The enzyme kinetic studies revealed a mixed type of inhibition. This study brings promising results for the therapeutic potential of seed and skin Tannat grape extracts as a functional food product with anti-diabetic activity.
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C-glucosidic ellagitannins and galloylated glucoses as potential functional food ingredients with anti-diabetic properties: a study of α-glucosidase and α-amylase inhibition. Food Chem 2019; 313:126099. [PMID: 31927321 DOI: 10.1016/j.foodchem.2019.126099] [Citation(s) in RCA: 78] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Revised: 12/19/2019] [Accepted: 12/22/2019] [Indexed: 12/13/2022]
Abstract
Diabetes mellitus is a metabolic disorder characterized by hyperglycemia, which can be counteracted by inhibition of α-glucosidase and α-amylase, both involved in the carbohydrate metabolism. Fourteen C-glucosidic ellagitannins and three galloylated glucoses were studied as potential α-glucosidase and α-amylase inhibitors. Most of the compounds were found to be moderate inhibitors of α-amylase, but potent inhibitors of α-glucosidase, showing low-micromolar IC50 values, far lower than that of the antidiabetic drug acarbose. This selectivity can be an advantage for their possible application as functional food ingredients with anti-diabetic properties because strong α-amylase inhibition generally causes undesired side effects. The best inhibitors were selected for further studies. Intrinsic fluorescence measurements confirmed their high affinity towards α-glucosidase, highlighting a static quenching mechanism. Circular dichroism measurements and kinetics of inhibition indicated that the most active C-glucosidic ellagitannin roburin D (RobD) is a competitive inhibitor, whereas α-pentagalloylglucose (α-PGG) acts as a mixed-type inhibitor.
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Rasooly R, Molnar A, Choi HY, Do P, Racicot K, Apostolidis E. In-Vitro Inhibition of Staphylococcal Pathogenesis by Witch-Hazel and Green Tea Extracts. Antibiotics (Basel) 2019; 8:antibiotics8040244. [PMID: 31795423 PMCID: PMC6963777 DOI: 10.3390/antibiotics8040244] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Revised: 11/22/2019] [Accepted: 11/26/2019] [Indexed: 11/16/2022] Open
Abstract
whISOBAX (WH), an extract of the witch-hazel plant that is native to the Northeast coast of the United States, contains significant amounts of a phenolic compound, Hamamelitannin (HAMA). Green tea (GT) is a widely consumed plant that contains various catechins. Both plants have been associated with antimicrobial effects. In this study we test the effects of these two plant extracts on the pathogenesis of staphylococci, and evaluate their effects on bacterial growth, biofilm formation, and toxin production. Our observations show that both extracts have antimicrobial effects against both strains of S. aureus and S. epidermidis tested, and that this inhibitory effect is synergistic. Also, we confirmed that this inhibitory effect does not depend on HAMA, but rather on other phenolic compounds present in WH and GT. In terms of biofilm inhibition, only WH exhibited an effect and the observed anti-biofilm effect was HAMA-depended. Finally, among the tested extracts, only WH exhibited an effect against Staphylococcal Enterotoxin A (SEA) production and this effect correlated to the HAMA present in WH. Our results suggest that GT and WH in combination can enhance the antimicrobial effects against staphylococci. However, only WH can control biofilm development and SEA production, due to the presence of HAMA. This study provides the initial rationale for the development of natural antimicrobials, to protect from staphylococcal colonization, infection, or contamination.
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Affiliation(s)
- Reuven Rasooly
- U.S. Department of Agriculture, Agricultural Research Service, Albany, CA 94710, USA;
- Correspondence: (R.R.); (E.A.)
| | - Adel Molnar
- Department of Chemistry and Food Science, Framingham State University, Framingham, MA 01702, USA; (A.M.); (H.-Y.C.)
| | - Hwang-Yong Choi
- Department of Chemistry and Food Science, Framingham State University, Framingham, MA 01702, USA; (A.M.); (H.-Y.C.)
| | - Paula Do
- U.S. Department of Agriculture, Agricultural Research Service, Albany, CA 94710, USA;
| | - Kenneth Racicot
- United States Army Combat Capabilities Development Command—Soldier Center (CCDC-SC), Natick, MA 01760, USA;
| | - Emmanouil Apostolidis
- Department of Chemistry and Food Science, Framingham State University, Framingham, MA 01702, USA; (A.M.); (H.-Y.C.)
- Correspondence: (R.R.); (E.A.)
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Cardullo N, Catinella G, Floresta G, Muccilli V, Rosselli S, Rescifina A, Bruno M, Tringali C. Synthesis of Rosmarinic Acid Amides as Antioxidative and Hypoglycemic Agents. JOURNAL OF NATURAL PRODUCTS 2019; 82:573-582. [PMID: 30785286 DOI: 10.1021/acs.jnatprod.8b01002] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Type 2 diabetes mellitus (T2DM) is an important metabolic disorder for which there is an urgent need for new antidiabetic drugs. α-Glucosidase inhibition is an established protocol for T2DM therapy. Because hyperglycemia causes oxidative tissue damage, the development of agents with both α-glucosidase inhibition and antioxidant activity from natural or natural-derived polyphenols such derivatives of rosmarinic acid (RA) represents an attractive therapeutic option. We report a study on amides 1-10 derived from RA and their evaluation for yeast α-glucosidase inhibition and antioxidant activity (DPPH and ORAC tests). All amides showed higher inhibitory activity than that of RA, were by far more potent than the antidiabetic drug acarbose, and proved to be effective antioxidants. A molecular docking study displayed significant binding interactions of RA amides with the active site of α-glucosidase. This in silico optimization study led to the design and synthesis of amides 9 (IC50 = 42.3 μM) and 10 (IC50 = 35.2 μM), showing the most potent α-glucosidase inhibition and good antioxidative properties. A kinetic study showed that 10 acts as a mixed type inhibitor.
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