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Nguyen HT, Wu S, Ootawa T, Nguyen HC, Tran HT, Pothinuch P, Pham HTT, Do ATH, Hoang HT, Islam MZ, Miyamoto A, Nguyen HTT. Effects of Roasting Conditions on Antibacterial Properties of Vietnamese Turmeric ( Curcuma longa) Rhizomes. Molecules 2023; 28:7242. [PMID: 37959661 PMCID: PMC10647697 DOI: 10.3390/molecules28217242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Revised: 10/12/2023] [Accepted: 10/22/2023] [Indexed: 11/15/2023] Open
Abstract
Processing with heat treatment has been reported to alter several therapeutic effects of turmeric. In Vietnamese traditional medicine, turmeric has been long used for bacterial infections, and roasting techniques are sometimes applied with this material. However, there have been no studies investigating the effects of these thermal processes on the plant's antibacterial properties. Our study was therefore performed to examine the changes that roasting produced on this material. Slices of dried turmeric were further subjected to light-roasting (80 °C in 20 min) or dark-roasting (160 °C in 20 min) processes. Broth dilution and agar-well diffusion methods were applied to examine and compare the effects of ethanol extracts obtained from non-roasted, light-roasted and dark-roasted samples, on a set of 6 gram-positive and gram-negative bacteria. In both investigations, dark-roasted turmeric was significantly less antibacterial than non-roasted and light-roasted materials, as evident by the higher values of minimum inhibitory concentrations and the smaller diameters of induced inhibitory zones. In addition, dark-roasting was also found to clearly reduce curcumin contents, total polyphenol values and antioxidant activities of the extracts. These results suggest that non-roasting or light-roasting might be more suitable for the processing of turmeric materials that are aimed to be applied for bacterial infections.
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Affiliation(s)
- Hai Thanh Nguyen
- Department of Plant Biotechnology, Faculty of Biotechnology, Vietnam National University of Agriculture, Trau Quy Crossing, Gia Lam District, Hanoi 131000, Vietnam; (H.T.N.); (H.T.T.P.); (A.T.H.D.)
| | - Siyuan Wu
- Department of Veterinary Pharmacology, Joint Faculty of Veterinary Medicine Kagoshima University, 1-21-24 Korimoto, Kagoshima 890-0065, Japan; (S.W.); (T.O.); (M.Z.I.)
| | - Tomoki Ootawa
- Department of Veterinary Pharmacology, Joint Faculty of Veterinary Medicine Kagoshima University, 1-21-24 Korimoto, Kagoshima 890-0065, Japan; (S.W.); (T.O.); (M.Z.I.)
| | - Hieu Chi Nguyen
- National Institute for Control of Vaccines and Biologicals, Hoang Mai District, Hanoi 128100, Vietnam; (H.C.N.); (H.T.T.)
| | - Hong Thi Tran
- National Institute for Control of Vaccines and Biologicals, Hoang Mai District, Hanoi 128100, Vietnam; (H.C.N.); (H.T.T.)
| | - Pitchaya Pothinuch
- Faculty of Food Technology, Rangsit University, 52/347 Muang-Ake Pahonyontin Road, Lak-Hok, Pathum Thani 12000, Thailand;
| | - Hang Thi Thu Pham
- Department of Plant Biotechnology, Faculty of Biotechnology, Vietnam National University of Agriculture, Trau Quy Crossing, Gia Lam District, Hanoi 131000, Vietnam; (H.T.N.); (H.T.T.P.); (A.T.H.D.)
| | - Anh Thi Hong Do
- Department of Plant Biotechnology, Faculty of Biotechnology, Vietnam National University of Agriculture, Trau Quy Crossing, Gia Lam District, Hanoi 131000, Vietnam; (H.T.N.); (H.T.T.P.); (A.T.H.D.)
| | - Hao Thanh Hoang
- Department of Veterinary Pharmacology, Faculty of Veterinary Medicine, Vietnam National University of Agriculture, Trau Quy Crossing, Gia Lam District, Hanoi 131000, Vietnam;
| | - Md. Zahorul Islam
- Department of Veterinary Pharmacology, Joint Faculty of Veterinary Medicine Kagoshima University, 1-21-24 Korimoto, Kagoshima 890-0065, Japan; (S.W.); (T.O.); (M.Z.I.)
- Department of Pharmacology, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh
| | - Atsushi Miyamoto
- Department of Veterinary Pharmacology, Joint Faculty of Veterinary Medicine Kagoshima University, 1-21-24 Korimoto, Kagoshima 890-0065, Japan; (S.W.); (T.O.); (M.Z.I.)
| | - Ha Thi Thanh Nguyen
- Department of Veterinary Pharmacology, Joint Faculty of Veterinary Medicine Kagoshima University, 1-21-24 Korimoto, Kagoshima 890-0065, Japan; (S.W.); (T.O.); (M.Z.I.)
- Department of Veterinary Pharmacology, Faculty of Veterinary Medicine, Vietnam National University of Agriculture, Trau Quy Crossing, Gia Lam District, Hanoi 131000, Vietnam;
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Oluwole DO, Coleman L, Buchanan W, Chen T, La Ragione RM, Liu LX. Antibiotics-Free Compounds for Chronic Wound Healing. Pharmaceutics 2022; 14:pharmaceutics14051021. [PMID: 35631606 PMCID: PMC9143489 DOI: 10.3390/pharmaceutics14051021] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2022] [Revised: 04/04/2022] [Accepted: 05/05/2022] [Indexed: 02/05/2023] Open
Abstract
The rapid rise in the health burden associated with chronic wounds is of great concern to policymakers, academia, and industry. This could be attributed to the devastating implications of this condition, and specifically, chronic wounds which have been linked to invasive microbial infections affecting patients' quality of life. Unfortunately, antibiotics are not always helpful due to their poor penetration of bacterial biofilms and the emergence of antimicrobial resistance. Hence, there is an urgent need to explore antibiotics-free compounds/formulations with proven or potential antimicrobial, anti-inflammatory, antioxidant, and wound healing efficacy. The mechanism of antibiotics-free compounds is thought to include the disruption of the bacteria cell structure, preventing cell division, membrane porins, motility, and the formation of a biofilm. Furthermore, some of these compounds foster tissue regeneration by modulating growth factor expression. In this review article, the focus is placed on a number of non-antibiotic compounds possessing some of the aforementioned pharmacological and physiological activities. Specific interest is given to Aloevera, curcumin, cinnamaldehyde, polyhexanide, retinoids, ascorbate, tocochromanols, and chitosan. These compounds (when alone or in formulation with other biologically active molecules) could be a dependable alternative in the management or prevention of chronic wounds.
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Affiliation(s)
- David O. Oluwole
- Chemical and Process Engineering Department, Faculty of Engineering and Physical Science, University of Surrey, Guildford GU2 7XH, UK; (L.C.); (T.C.)
- Correspondence: (D.O.O.); (L.X.L.)
| | - Lucy Coleman
- Chemical and Process Engineering Department, Faculty of Engineering and Physical Science, University of Surrey, Guildford GU2 7XH, UK; (L.C.); (T.C.)
| | | | - Tao Chen
- Chemical and Process Engineering Department, Faculty of Engineering and Physical Science, University of Surrey, Guildford GU2 7XH, UK; (L.C.); (T.C.)
| | - Roberto M. La Ragione
- School of Biosciences and Medicine, Faculty of Health and Medical Sciences, University of Surrey, Guildford GU2 7XH, UK;
- School of Veterinary Medicine, Faculty of Health and Medical Sciences, University of Surrey, Guildford GU2 7AL, UK
| | - Lian X. Liu
- Chemical and Process Engineering Department, Faculty of Engineering and Physical Science, University of Surrey, Guildford GU2 7XH, UK; (L.C.); (T.C.)
- Correspondence: (D.O.O.); (L.X.L.)
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Short Overview of Some Assays for the Measurement of Antioxidant Activity of Natural Products and Their Relevance in Dermatology. Molecules 2021; 26:molecules26175301. [PMID: 34500732 PMCID: PMC8433703 DOI: 10.3390/molecules26175301] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Revised: 08/25/2021] [Accepted: 08/25/2021] [Indexed: 12/19/2022] Open
Abstract
Impaired systemic redox homeostasis is implicated in the onset and development of various diseases, including skin diseases. Therefore, continuous search for natural products with antioxidant bioactivities applicable in biomedicine is attractive topic of general interest. Research efforts aiming to validate antioxidant potentials of natural products has led to the development of several assays based on various test principles. Hence, understanding the advantages and limitations of various assays is important for selection of assays useful to study antioxidant and related bioactivities of natural products of biomedical interest. This review paper gives a short overview on some chemical and cellular bioassays used to estimate the antioxidant activity of chosen natural products together with a brief overview on the use of natural products with antioxidant activities as adjuvant medicinal remedies in dermatology.
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Antioxidant and Anti-Inflammatory Activities of Cytocompatible Salvia officinalis Extracts: A Comparison between Traditional and Soxhlet Extraction. Antioxidants (Basel) 2020; 9:antiox9111157. [PMID: 33233648 PMCID: PMC7699719 DOI: 10.3390/antiox9111157] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 11/13/2020] [Accepted: 11/18/2020] [Indexed: 12/16/2022] Open
Abstract
Chronic inflammation is characterized by an overproduction of several inflammatory mediators (e.g., reactive species and interleukins -IL) that play a central role in numerous diseases. The available therapies are often associated with serious side effects and, consequently, the need for safer drugs is of utmost importance. A plant traditionally used in the treatment of inflammatory conditions is Salvia officinalis. Therefore, conventional maceration and infusion of its leaves were performed to obtain hydroethanolic (HE-T) and aqueous extracts (AE-T), respectively. Their efficacy was compared to soxhlet extracts, namely aqueous (AE-S), hydroethanolic (HE-S), and ethanolic extracts (EE-S). Thin-layer chromatography demonstrated the presence of rosmarinic acid, carnosol, and/or carnosic acid in the different extracts. Generally, soxhlet provided extracts with higher antioxidant activities than traditional extraction. Moreover, under an inflammatory scenario, EE-S were the most effective, followed by HE-S, HE-T, AE-T, and AE-S, in the reduction of IL-6 and TNF-α production. Interestingly, the extracts presented higher or similar anti-inflammatory activity than diclofenac, salicylic acid, and celecoxib. In conclusion, the extraction method and the solvents of extraction influenced the antioxidant activity, but mainly the anti-inflammatory activity of the extracts. Therefore, this natural resource can enable the development of effective treatments for oxidative stress and inflammatory diseases.
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Choi Y, Kim W, Lee JS, Youn SJ, Lee H, Baik MY. Enhanced Antioxidant Capacity of Puffed Turmeric ( Curcuma longa L.) by High Hydrostatic Pressure Extraction (HHPE) of Bioactive Compounds. Foods 2020; 9:E1690. [PMID: 33218182 PMCID: PMC7699201 DOI: 10.3390/foods9111690] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 11/08/2020] [Accepted: 11/16/2020] [Indexed: 11/17/2022] Open
Abstract
Turmeric (Curcuma longa L.) is known for its health benefits. Several previous studies revealed that curcumin, the main active compound in turmeric, has antioxidant capacity. It has been previously demonstrated that puffing, the physical processing using high heat and pressure, of turmeric increases the antioxidant and anti-inflammatory activities by increasing phenolic compounds in the extract. The current study sought to determine if high hydrostatic pressure extraction (HHPE), a non-thermal extraction at over 100 MPa, aids in the chemical changes and antioxidant functioning of turmeric. 2,2-diphenyl-1-picrylhydrazyl (DPPH), 2,2'-azino-bis (3-ethylbenzothiazoline-6-sulphonic acid) (ABTS), and ferric reducing antioxidant power (FRAP) analyses were conducted and assessed the content of total phenol compounds in the extract. The chemical changes of curcuminoids were also determined by high performance liquid chromatography (HPLC). Among the three variables of ethanol concentration, pressure level, and treatment time, ethanol concentration was the most influential factor for the HHPE of turmeric. HHPE at 400 MPa for 20 min with 70% EtOH was the optimal extraction condition for the highest antioxidant activity. Compositional analysis revealed that 2-methoxy-4-vinylphenol was produced by puffing. Vanillic acid and ferulic acid content increased with increasing HHPE time. Synergistic effect was not observed on antioxidant activity when the turmeric was sequentially processed using puffing and HHPE.
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Affiliation(s)
- Yohan Choi
- Department of Food Science and Biotechnology, Graduate School of Biotechnology, Institute of Life Science and Resources, Kyung Hee University, Yongin 17104, Korea; (Y.C.); (W.K.); (J.-S.L.)
| | - Wooki Kim
- Department of Food Science and Biotechnology, Graduate School of Biotechnology, Institute of Life Science and Resources, Kyung Hee University, Yongin 17104, Korea; (Y.C.); (W.K.); (J.-S.L.)
| | - Joo-Sung Lee
- Department of Food Science and Biotechnology, Graduate School of Biotechnology, Institute of Life Science and Resources, Kyung Hee University, Yongin 17104, Korea; (Y.C.); (W.K.); (J.-S.L.)
| | - So Jung Youn
- Department of Food Engineering, Dankook University, Cheonan 31116, Korea;
| | - Hyungjae Lee
- Department of Food Engineering, Dankook University, Cheonan 31116, Korea;
| | - Moo-Yeol Baik
- Department of Food Science and Biotechnology, Graduate School of Biotechnology, Institute of Life Science and Resources, Kyung Hee University, Yongin 17104, Korea; (Y.C.); (W.K.); (J.-S.L.)
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