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Depolymerized Fractions of Sulfated Galactans Extracted from Gracilaria fisheri and Their Antibacterial Activity against Vibrio parahaemolyticus and Vibrio harveyi. Mar Drugs 2022; 20:md20080469. [PMID: 35892937 PMCID: PMC9394303 DOI: 10.3390/md20080469] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Revised: 07/16/2022] [Accepted: 07/20/2022] [Indexed: 11/24/2022] Open
Abstract
Various seaweed sulfated polysaccharides have been explored for antimicrobial application. This study aimed to evaluate the antibacterial activity of the native Gracilaria fisheri sulfated galactans (NSG) and depolymerized fractions against the marine pathogenic bacteria Vibrio parahaemolyticus and Vibrio harveyi. NSG was hydrolyzed in different concentrations of H2O2 to generate sulfated galactans degraded fractions (SGF). The molecular weight, structural characteristics, and physicochemical parameters of both NSG and SGF were determined. The results revealed that the high molecular weight NSG (228.33 kDa) was significantly degraded to SGFs of 115.76, 3.79, and 3.19 kDa by hydrolysis with 0.4, 2, and 10% H2O2, respectively. The Fourier transformed spectroscopy (FTIR) and 1H− and 13C−Nuclear magnetic resonance (NMR) analyses demonstrated that the polysaccharide chain structure of SGFs was not affected by H2O2 degradation, but alterations were detected at the peak positions of some functional groups. In vitro study showed that SGFs significantly exerted a stronger antibacterial activity against V. parahaemolyticus and V. harveyi than NSG, which might be due to the low molecular weight and higher sulfation properties of SGF. SGF disrupted the bacterial cell membrane, resulting in leakage of intracellular biological components, and subsequently, cell death. Taken together, this study provides a basis for the exploitation and utilization of low-molecular-weight sulfated galactans from G. fisheri to prevent and control the shrimp pathogens.
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Doan VK, Ly KL, Tran NMP, Ho TPT, Ho MH, Dang NTN, Chang CC, Nguyen HTT, Ha PT, Tran QN, Tran LD, Vo TV, Nguyen TH. Characterizations and Antibacterial Efficacy of Chitosan Oligomers Synthesized by Microwave-Assisted Hydrogen Peroxide Oxidative Depolymerization Method for Infectious Wound Applications. MATERIALS (BASEL, SWITZERLAND) 2021; 14:4475. [PMID: 34442997 PMCID: PMC8399586 DOI: 10.3390/ma14164475] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Revised: 07/19/2021] [Accepted: 07/21/2021] [Indexed: 11/17/2022]
Abstract
The use of naturally occurring materials with antibacterial properties has gained a great interest in infected wound management. Despite being an abundant resource in Vietnam, chitosan and its derivatives have not yet been intensively explored for their potential in such application. Here, we utilized a local chitosan source to synthesize chitosan oligomers (OCS) using hydrogen peroxide (H2O2) oxidation under the microwave irradiation method. The effects of H2O2 concentration on the physicochemical properties of OCS were investigated through molecular weight, degree of deacetylation, and heavy metal contamination for optimization of OCS formulation. Then, the antibacterial inhibition was examined; the minimum inhibitory concentration and minimum bactericidal concentration (MIC and MBC) of OCS-based materials were determined against common skin-inhabitant pathogens. The results show that the local Vietnamese chitosan and its derivative OCS possessed high-yield purification while the molecular weight of OCS was inversely proportional and proportional to the concentration of H2O2, respectively. Further, the MIC and MBC of OCS ranged from 3.75 to less than 15 mg/mL and 7.5-15 mg/mL, respectively. Thus, OCS-based materials induce excellent antimicrobial properties and can be attractive for wound dressings and require further investigation.
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Affiliation(s)
- Vinh Khanh Doan
- Department of Tissue Engineering and Regenerative Medicine, School of Biomedical Engineering, International University, Ho Chi Minh City 700000, Vietnam; (V.K.D.); (K.L.L.); (N.M.-P.T.); (T.P.-T.H.); (M.H.H.); (N.T.-N.D.); (T.V.V.)
- Vietnam National University, Ho Chi Minh City 700000, Vietnam;
| | - Khanh Loan Ly
- Department of Tissue Engineering and Regenerative Medicine, School of Biomedical Engineering, International University, Ho Chi Minh City 700000, Vietnam; (V.K.D.); (K.L.L.); (N.M.-P.T.); (T.P.-T.H.); (M.H.H.); (N.T.-N.D.); (T.V.V.)
- Vietnam National University, Ho Chi Minh City 700000, Vietnam;
| | - Nam Minh-Phuong Tran
- Department of Tissue Engineering and Regenerative Medicine, School of Biomedical Engineering, International University, Ho Chi Minh City 700000, Vietnam; (V.K.D.); (K.L.L.); (N.M.-P.T.); (T.P.-T.H.); (M.H.H.); (N.T.-N.D.); (T.V.V.)
- Vietnam National University, Ho Chi Minh City 700000, Vietnam;
| | - Trinh Phuong-Thi Ho
- Department of Tissue Engineering and Regenerative Medicine, School of Biomedical Engineering, International University, Ho Chi Minh City 700000, Vietnam; (V.K.D.); (K.L.L.); (N.M.-P.T.); (T.P.-T.H.); (M.H.H.); (N.T.-N.D.); (T.V.V.)
- Vietnam National University, Ho Chi Minh City 700000, Vietnam;
| | - Minh Hieu Ho
- Department of Tissue Engineering and Regenerative Medicine, School of Biomedical Engineering, International University, Ho Chi Minh City 700000, Vietnam; (V.K.D.); (K.L.L.); (N.M.-P.T.); (T.P.-T.H.); (M.H.H.); (N.T.-N.D.); (T.V.V.)
- Vietnam National University, Ho Chi Minh City 700000, Vietnam;
| | - Nhi Thao-Ngoc Dang
- Department of Tissue Engineering and Regenerative Medicine, School of Biomedical Engineering, International University, Ho Chi Minh City 700000, Vietnam; (V.K.D.); (K.L.L.); (N.M.-P.T.); (T.P.-T.H.); (M.H.H.); (N.T.-N.D.); (T.V.V.)
- Vietnam National University, Ho Chi Minh City 700000, Vietnam;
| | - Cheng-Chung Chang
- Graduate Institute of Biomedical Engineering, National Chung Hsing University, Taichung City 40227, Taiwan;
| | - Hoai Thi-Thu Nguyen
- Vietnam National University, Ho Chi Minh City 700000, Vietnam;
- School of Biotechnology, International University, Ho Chi Minh City 700000, Vietnam
| | - Phuong Thu Ha
- Institute of Materials Science, Vietnam Academy of Science and Technology, Ha Noi 100000, Vietnam;
| | - Quyen Ngoc Tran
- Institute of Applied Materials Science, Vietnam Academy Science and Technology, Ho Chi Minh City 700000, Vietnam;
- Graduate University of Science and Technology Viet Nam, Vietnam Academy of Science and Technology, Ho Chi Minh City 700000, Vietnam
| | - Lam Dai Tran
- Institute for Tropical Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Ha Noi 100000, Vietnam;
- Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Ha Noi 100000, Vietnam
| | - Toi Van Vo
- Department of Tissue Engineering and Regenerative Medicine, School of Biomedical Engineering, International University, Ho Chi Minh City 700000, Vietnam; (V.K.D.); (K.L.L.); (N.M.-P.T.); (T.P.-T.H.); (M.H.H.); (N.T.-N.D.); (T.V.V.)
- Vietnam National University, Ho Chi Minh City 700000, Vietnam;
| | - Thi Hiep Nguyen
- Department of Tissue Engineering and Regenerative Medicine, School of Biomedical Engineering, International University, Ho Chi Minh City 700000, Vietnam; (V.K.D.); (K.L.L.); (N.M.-P.T.); (T.P.-T.H.); (M.H.H.); (N.T.-N.D.); (T.V.V.)
- Vietnam National University, Ho Chi Minh City 700000, Vietnam;
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Ayati Najafabadi SA, Shirazaki P, Zargar Kharazi A, Varshosaz J, Tahriri M, Tayebi L. Evaluation of sustained ciprofloxacin release of biodegradable electrospun gelatin/poly(glycerol sebacate) mat membranes for wound dressing applications. ASIA-PAC J CHEM ENG 2018. [DOI: 10.1002/apj.2255] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
| | - Parisa Shirazaki
- School of Advanced Technology in Medicine; Isfahan University of Medical Sciences; Isfahan Iran
| | - Anoushe Zargar Kharazi
- School of Advanced Technology in Medicine; Isfahan University of Medical Sciences; Isfahan Iran
| | - Jaleh Varshosaz
- School of Pharmacy and Pharmaceutical Sciences; Isfahan University of Medical Sciences; Isfahan Iran
| | | | - Lobat Tayebi
- Marquette University School of Dentistry; Milwaukee WI 53233 USA
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