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Zhang S, Yi X, He D, Tang X, Chen Y, Zheng H. Recent progress and perspectives of typical renewable bio-based flocculants: characteristics and application in wastewater treatment. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:46877-46897. [PMID: 38980480 DOI: 10.1007/s11356-024-34199-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Accepted: 06/27/2024] [Indexed: 07/10/2024]
Abstract
The research on bio-based flocculants for waste resource utilization and environmental protection has garnered significant attention. Bio-based flocculants encompass plant-based, animal-based, and microbial variants that are prepared and modified through biological, chemical, and physical methods. These flocculants possess abundant functional groups, unique structures, and distinctive characteristics. This review comprehensively discussed the removal rates of conventional pollutants and emerging pollutants by bio-based flocculants, the interaction between these flocculants and pollutants, their impact on flocculation performance in wastewater treatment, as well as their application cost. Furthermore, it described the common challenges faced by bio-based flocculants in practical applications along with various improvement strategies to address them. With their safety profile, environmental friendliness, efficiency, renewability, and wide availability from diverse sources, bio-based flocculants hold great potential for widespread use in wastewater treatment.
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Affiliation(s)
- Shixin Zhang
- School of River and Ocean Engineering, Chongqing Jiaotong University, Chongqing, 400074, People's Republic of China
- Key Laboratory of Hydraulic and Waterway Engineering of the Ministry of Education, Chongqing Jiaotong University, Chongqing, 400074, People's Republic of China
| | - Xiaohui Yi
- School of River and Ocean Engineering, Chongqing Jiaotong University, Chongqing, 400074, People's Republic of China
| | - Dilin He
- School of River and Ocean Engineering, Chongqing Jiaotong University, Chongqing, 400074, People's Republic of China
| | - Xiaomin Tang
- Chongqing Key Laboratory of Catalysis & Functional Organic Molecules, College of Environment and Resources, Chongqing Technology and Business University, Chongqing, 400067, People's Republic of China
| | - Yao Chen
- School of River and Ocean Engineering, Chongqing Jiaotong University, Chongqing, 400074, People's Republic of China.
- Key Laboratory of Hydraulic and Waterway Engineering of the Ministry of Education, Chongqing Jiaotong University, Chongqing, 400074, People's Republic of China.
| | - Huaili Zheng
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, State Ministry of Education, Chongqing University, Chongqing, 400045, People's Republic of China
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Zarina, Wani AW, Rawat M, Kaur H, Das S, Kaur T, Akram N, Faisal Z, Jan SS, Oyshe NN, Khan MR, Shah YA. Medicinal utilization and nutritional properties of drumstick ( Moringa oleifera)-A comprehensive review. Food Sci Nutr 2024; 12:4546-4568. [PMID: 39055230 PMCID: PMC11266908 DOI: 10.1002/fsn3.4139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Revised: 03/10/2024] [Accepted: 03/17/2024] [Indexed: 07/27/2024] Open
Abstract
The tropical and subtropical regions of the world support the growth of the Indian plant Moringa oleifera. It usually goes by the name drumstick tree or horseradish tree and thrives in warm climates. The leaves of the M. oleifera tree are now frequently used as nutrients and nutraceuticals due to their availability of various minerals. While having only very minor antinutritional effects, the leaves are abundant in many beneficial compounds. A recent review of the bioactive components and activity of moringa leaves has focused on both in vivo and in vitro studies. Drumstick leaves have antidiabetic qualities, anti-inflammatory, anticancer, and antibacterial qualities among other health benefits. Phytochemicals, in addition to minerals and vitamins, are abundant in this vegetable. The majority of these effects, according to a review in the literature, are mostly brought on by the presence of carotenoids, glucosinolates, and phytochemicals. As a value-added component in the production of wholesome meals, moringa is becoming more popular. Despite extensive research into locating and quantifying these advantageous elements in drumstick leaves, bioavailability and bioaccessibility studies were carried out. Beneficial photochemicals are absorbed and digested through incredibly intricate processes that involve several physicochemical and physiological interactions. Therefore, the biological impact of food may be attributed to its various metabolites that can access particular areas of action rather than its original substances. This body of literature offers the most recent findings in scientific research on the bioavailability, health advantages, nutritional profiles, and bioactive activities of moringa leaves as they relate to their use in a range of food products. Drumsticks are frequently used as a food element that promotes health because of their potent protection against a variety of ailments and the presence of environmental pollutants.
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Affiliation(s)
- Zarina
- Department of Horticulture, School of AgricultureLovely Professional UniversityPhagwaraPunjabIndia
| | - Ab Waheed Wani
- Department of Horticulture, School of AgricultureLovely Professional UniversityPhagwaraPunjabIndia
| | - Monisha Rawat
- Department of Horticulture, School of AgricultureLovely Professional UniversityPhagwaraPunjabIndia
| | - Harjinder Kaur
- Department of Horticulture, School of AgricultureLovely Professional UniversityPhagwaraPunjabIndia
| | - Sachitanand Das
- Department of Horticulture, School of AgricultureLovely Professional UniversityPhagwaraPunjabIndia
| | - Taranpreet Kaur
- Department of Horticulture, School of AgricultureLovely Professional UniversityPhagwaraPunjabIndia
| | - Noor Akram
- Food Safety & Biotechnology Lab, Department of Food ScienceGovernment College University FaisalabadFaisalabadPakistan
| | - Zargham Faisal
- Department of Human Nutrition and DieteticsIqra University KarachiKarachiPakistan
| | - Syed Saad Jan
- Centre of Biotechnology and MicrobiologyUniversity of PeshawarPeshawarPakistan
| | - Nabila Nusrat Oyshe
- Department of ChemistryHajee Mohammad Danesh Science and Technology UniversityDinajpurBangladesh
| | - Mahbubur Rahman Khan
- Department of Food Processing and PreservationHajee Mohammad Danesh Science & Technology UniversityDinajpurBangladesh
| | - Yasir Abbas Shah
- Department of Food ScienceGovernment College UniversityFaisalabadPakistan
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Buathong R, Duangsrisai S. Plant ingredients in Thai food: a well-rounded diet for natural bioactive associated with medicinal properties. PeerJ 2023; 11:e14568. [PMID: 36879911 PMCID: PMC9985418 DOI: 10.7717/peerj.14568] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Accepted: 11/23/2022] [Indexed: 03/05/2023] Open
Abstract
Background Seeking cures for chronic inflammation-associated diseases and infectious diseases caused by critical human pathogens is challenging and time-consuming. Even as the research community searches for novel bioactive agents, consuming a healthy diet with functional ability might be an effective way to delay and prevent the progression of severe health conditions. Many plant ingredients in Thai food are considered medicinal, and these vegetables, herbs, and spices collectively possess multiple biological and pharmacological activities, such as anti-inflammatory, antimicrobial, antidiabetic, antipyretic, anticancer, hepatoprotective, and cardioprotective effects. Methodology In this review, the selected edible plants are unspecific to Thai food, but our unique blend of recipes and preparation techniques make traditional Thai food healthy and functional. We searched three electronic databases: PUBMED, Science Direct, and Google Scholar, using the specific keywords "Plant name" followed by "Anti-inflammatory" or "Antibacterial" or "Antiviral" and focusing on articles published between 2017 and 2021. Results Our selection of 69 edible and medicinal plant species (33 families) is the most comprehensive compilation of Thai food sources demonstrating biological activities to date. Focusing on articles published between 2017 and 2021, we identified a total of 245 scientific articles that have reported main compounds, traditional uses, and pharmacological and biological activities from plant parts of the selected species. Conclusions Evidence indicates that the selected plants contain bioactive compounds responsible for anti-inflammatory, antibacterial, and antiviral properties, suggesting these plants as potential sources for bioactive agents and suitable for consumption for health benefits.
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Affiliation(s)
- Raveevatoo Buathong
- Department of Botany, Faculty of Science, Kasetsart University, Bangkok, Thailand
| | - Sutsawat Duangsrisai
- Department of Botany, Faculty of Science, Kasetsart University, Bangkok, Thailand
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Phytochemical analysis and evaluation of antibacterial activity of Moringa oleifera extracts against gram-negative bacteria: an in vitro and molecular docking studies. CURRENT ISSUES IN PHARMACY AND MEDICAL SCIENCES 2022. [DOI: 10.2478/cipms-2022-0035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Abstract
Moringa oleifera seed and leaf are used traditionally for the treatment of various health problems (among others, hypertension, scrapes, skin infection, diabetes, genitourinary illnesses), and to boost the immune system, as well as to act as a contraceptive. In this study, the antibacterial activity of seed and leaf M. oleifera extracts on three-gram negative bacteria was investigated, and phytochemical analysis for the association of antibacterial activity with the active constituents in the plant was determined. Moreover, understanding of the mechanism of action was achieved by applying the Auto Dock Vina technique. The phytochemical screening of M. oleifera seed and leaf extracts exhibited the presence of alkaloids, carbohydrates, cardioactive glycosides, flavonoids, tannins, phenols, steroids and terpenoids. In silico results revealed that compounds (4-O-caffeoyl quinic acid, 4-(α-L-rhamnopyranosyloxyl)-benzylisothiocyanate); (Isoquercitrin, 4-(α-L-rhamnopyranosyloxy) benzyl glucosinolate); and (Astragalin, 4-(α-L-rhamnopyranosyloxy) benzyl glucosinolate) from leaf and seed have the highest binding affinity and very good interactions with Transcriptional Activator Protein (LasR), Klebsiella pneumoniae carbapenemase (KPC), and Malonyl-CoA-acyl carrier protein transacylase (FabD), respectively.
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Spatial and Seasonal Drinking Water Quality Assessment in a Sub-Saharan Country (Guinea-Bissau). WATER 2022. [DOI: 10.3390/w14131987] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The United Nations Sustainable Development Goal target 6.1 calls for universal and equitable access to safe and affordable drinking water. Worldwide, about 2.2 billion people live without access to safe water, and millions of people suffer from waterborne pathogens each year, representing the most pressing situation in developing countries. The aim of this study was to investigate the drinking water quality dynamics across an endemic cholera sub-Saharan country (Guinea-Bissau), and understand its implications for public health. Microbiological and physical–chemical quality parameters of 252 major water sources spread all over the country were seasonally surveyed. These comprised hand-dug shallow wells and boreholes, fitted with a bucket or a pump to retrieve water. The results showed that the majority of water sources available to the population were grossly polluted with faecal material (80%), being unsuitable for consumption, with significantly (p < 0.05) higher levels during the wet season. Hand-dug wells revealed the highest contamination levels. The chemical contamination was less relevant, although 83% of the water sources were acidic (pH < 6.5). This study highlights the potential health risk associated with the lack of potable drinking water, reinforcing the evidence for water monitoring, and the need to improve WASH (water, sanitation, and hygiene) infrastructure and water management in West African countries. In addition, the authors suggest easy-to-implement interventions that can have a dramatic impact in the water quality, assisting to reduce the associated waterborne diseases rise.
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Kashyap P, Kumar S, Riar CS, Jindal N, Baniwal P, Guiné RPF, Correia PMR, Mehra R, Kumar H. Recent Advances in Drumstick (Moringa oleifera) Leaves Bioactive Compounds: Composition, Health Benefits, Bioaccessibility, and Dietary Applications. Antioxidants (Basel) 2022; 11:antiox11020402. [PMID: 35204283 PMCID: PMC8869219 DOI: 10.3390/antiox11020402] [Citation(s) in RCA: 36] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2022] [Revised: 02/12/2022] [Accepted: 02/13/2022] [Indexed: 01/05/2023] Open
Abstract
Based on the availability of many nutrients, Moringa oleifera tree leaves have been widely employed as nutrients and nutraceuticals in recent years. The leaves contain a small amount of anti-nutritional factors and are abundant in innumerable bioactive compounds. Recently, in several in vivo and in vitro investigations, moringa leaves’ bioactive components and functionality are highlighted. Moringa leaves provide several health advantages, including anti-diabetic, antibacterial, anti-cancer, and anti-inflammatory properties. The high content of phytochemicals, carotenoids, and glucosinolates is responsible for the majority of these activities as reported in the literature. Furthermore, there is growing interest in using moringa as a value-added ingredient in the development of functional foods. Despite substantial study into identifying and measuring these beneficial components from moringa leaves, bioaccessibility and bioavailability studies are lacking. This review emphasizes recent scientific evidence on the dietary and bioactive profiles of moringa leaves, bioavailability, health benefits, and applications in various food products. This study highlights new scientific data on the moringa leaves containing nutrient and bioactive profiles, bioavailability, health benefits, and uses in various food items. Moringa has been extensively used as a health-promoting food additive because of its potent protection against various diseases and the widespread presence of environmental toxins. More research is needed for utilization as well as to study medicinal effects and bioaccesibility of these leaves for development of various drugs and functional foods.
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Affiliation(s)
- Piyush Kashyap
- Department of Food Engineering & Technology, Sant Longowal Institute of Engineering & Technology, Longowal 148106, India; (P.K.); (C.S.R.); (N.J.)
- Department of Food Technology and Nutrition, School of Agriculture Lovely Professional University, Phagwara 144401, India
| | - Shiv Kumar
- Food Science & Technology (Hotel Management), Maharishi Markandeshwar (Deemed to Be University), Mullana, Ambala 133207, India
- Correspondence: (S.K.); (R.P.F.G.); (H.K.)
| | - Charanjit Singh Riar
- Department of Food Engineering & Technology, Sant Longowal Institute of Engineering & Technology, Longowal 148106, India; (P.K.); (C.S.R.); (N.J.)
| | - Navdeep Jindal
- Department of Food Engineering & Technology, Sant Longowal Institute of Engineering & Technology, Longowal 148106, India; (P.K.); (C.S.R.); (N.J.)
| | | | - Raquel P. F. Guiné
- CERNAS Research Centre, Polytechnic Institute of Viseu, 3504-510 Viseu, Portugal;
- Correspondence: (S.K.); (R.P.F.G.); (H.K.)
| | - Paula M. R. Correia
- CERNAS Research Centre, Polytechnic Institute of Viseu, 3504-510 Viseu, Portugal;
| | - Rahul Mehra
- Amity Institute of Biotechnology, Amity University Rajasthan, Jaipur 303002, India;
| | - Harish Kumar
- Amity Institute of Biotechnology, Amity University Rajasthan, Jaipur 303002, India;
- Correspondence: (S.K.); (R.P.F.G.); (H.K.)
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Wuryandari MRE, Atho'illah MF, Laili RD, Fatmawati S, Widodo N, Widjajanto E, Rifa'i M. Lactobacillus plantarum FNCC 0137 fermented red Moringa oleifera exhibits protective effects in mice challenged with Salmonella typhi via TLR3/TLR4 inhibition and down-regulation of proinflammatory cytokines. J Ayurveda Integr Med 2021; 13:100531. [PMID: 34903438 PMCID: PMC8728064 DOI: 10.1016/j.jaim.2021.10.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Revised: 10/02/2021] [Accepted: 10/22/2021] [Indexed: 02/07/2023] Open
Abstract
Background Salmonella typhi is a foodborne pathogenic bacterium that threatens health. S. typhi infection exacerbated the antibiotic resistance problem that needs alternative strategies. Moringa oleifera possesses anti-inflammatory and antimicrobial effects. However, there is a lack of information about the pharmacological value of red M. oleifera. The fermentation of red M. oleifera leaves extract (RMOL) is expected to add to its nutritional value. Objective The present study aimed to evaluate non-fermented RMOL (NRMOL) and fermented RMOL (FRMOL) effects on S. typhi infection in mice. Materials and methods Female Balb/C mice were randomly divided into eight groups. The treatment groups were orally administered with NRMOL or FRMOL at doses 14, 42, and 84 mg/kg BW during the 28 days experimental period. Then S. typhi was introduced to mice through intraperitoneal injection except in the healthy groups. The NRMOL or FRMOL administration was continued for the next seven days. Cells that expressed CD11b+ TLR3+, CD11b+TLR4+, CD11b+IL-6+, CD11b+IL-17+, CD11b+TNF-a+, and CD4+CD25+CD62L+ were assessed by flow cytometry. Results Our result suggested that NRMOL and FRMOL extracts significantly reduced (p < 0.05) the expression of CD11b+TLR3+, CD11b+TLR4+, CD11b+IL-6+, CD11b+IL-17+, and CD11b+TNF-α+ subsets. In contrast, NRMOL and FRMOL extracts significantly increased (p < 0.05) the expression of CD4+CD25+CD62L+ subsets. NRMOL at dose 14 and 42 mg/kg BW was more effective compared to FRMOL in reducing the expression of CD11b+TLR3+, CD11b+TLR4+, and CD11b+TNF-α+ subsets. Conclusion Our findings demonstrated that NRMOL and FRMOL extracts could be promising agents for protection against S. typhi infection via modulation of TLR3/TLR4, regulatory T cells, and proinflammatory cytokines.
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Affiliation(s)
- Mm Riyaniarti Estri Wuryandari
- Department of Biology, Faculty of Technology and Health Management, Institut Ilmu Kesehatan Bhakti Wiyata, 64114, Kediri, East Java, Indonesia.
| | - Mochammad Fitri Atho'illah
- Department of Biology, Faculty of Mathematics and Natural Sciences, Brawijaya University, 65145, Malang, East Java, Indonesia
| | - Rizky Dzariyani Laili
- Department of Nutrition, Sekolah Tinggi Ilmu Kesehatan Hang Tuah Surabaya, 60244, Surabaya, East Java, Indonesia
| | - Siti Fatmawati
- Department of Food Sciences and Technology, Faculty of Agricultural Technology, Brawijaya University, 65145, Malang, East Java, Indonesia
| | - Nashi Widodo
- Department of Biology, Faculty of Mathematics and Natural Sciences, Brawijaya University, 65145, Malang, East Java, Indonesia; Center of Biosystem Study, LPPM of Brawijaya University, 65145, Malang, East Java, Indonesia
| | - Edi Widjajanto
- Faculty of Medicine, Brawijaya University, 65145, Malang, East Java, Indonesia
| | - Muhaimin Rifa'i
- Department of Biology, Faculty of Mathematics and Natural Sciences, Brawijaya University, 65145, Malang, East Java, Indonesia; Center of Biosystem Study, LPPM of Brawijaya University, 65145, Malang, East Java, Indonesia.
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Flores B, Ramírez E, Moncada A, Salinas N, Fischer R, Hernández C, Mora-Sánchez B, Sheleby-Elías J, Jirón W, Balcázar JL. Antimicrobial effect of Moringa oleifera seed powder against Vibrio cholerae isolated from the rearing water of shrimp (Penaeus vannamei) postlarvae. Lett Appl Microbiol 2021; 74:238-246. [PMID: 34806784 DOI: 10.1111/lam.13604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Revised: 10/01/2021] [Accepted: 11/02/2021] [Indexed: 11/29/2022]
Abstract
Shrimp farming has experienced rising costs as a result of disease outbreaks associated with Vibrio spp. Suitable strategies for disease prevention and control are therefore urgently needed. This study aimed to evaluate the antimicrobial effect of Moringa oleifera seed powder against Vibrio cholerae in the rearing water of Pacific white shrimp (Penaeus vannamei) postlarvae. In vitro assays included the determination of minimum inhibitory concentration (MIC) of M. oleifera seed powder against V. cholerae, whereas in vivo assays included the effect of M. oleifera seed powder on bacterial load and water quality parameters in the rearing tanks, as well as its effect on shrimp postlarvae survival. M. oleifera seed powder inhibited the growth of V. cholerae with MIC values of 62·5 µg ml-1 . Moreover, seawater pH of treated tanks (8·66) was significantly lower (P < 0·01) than pH of the control tanks (9·02), whereas the visibility of treated tanks (37·08 cm) was significantly higher (P < 0·01) as compared to control tanks (35·37 cm). Likewise, V. cholerae load was significantly reduced (P < 0·01) from 4·7 × 104 to 3·1 × 103 CFU per ml in tanks treated with M. oleifera seed powder. Altogether, this study demonstrates the antimicrobial activity of M. oleifera against V. cholerae in shrimp culture.
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Affiliation(s)
- B Flores
- Centro Veterinario de Diagnóstico e Investigación (CEVEDI), Departamento de Veterinaria y Zootecnia, Escuela de Ciencias Agrarias y Veterinarias, Universidad Nacional Autónoma de Nicaragua-León (UNAN-León), León, Nicaragua
| | - E Ramírez
- Departamento Acuícola, Escuela de Ciencias Agrarias y Veterinarias, Universidad Nacional Autónoma de Nicaragua-León (UNAN-León), León, Nicaragua
| | - A Moncada
- Departamento Acuícola, Escuela de Ciencias Agrarias y Veterinarias, Universidad Nacional Autónoma de Nicaragua-León (UNAN-León), León, Nicaragua
| | - N Salinas
- Departamento Acuícola, Escuela de Ciencias Agrarias y Veterinarias, Universidad Nacional Autónoma de Nicaragua-León (UNAN-León), León, Nicaragua
| | - R Fischer
- Department of Epidemiology and Biostatistics, Texas A & M University Health Science Center, College Station, TX, USA
| | - C Hernández
- Departamento Acuícola, Escuela de Ciencias Agrarias y Veterinarias, Universidad Nacional Autónoma de Nicaragua-León (UNAN-León), León, Nicaragua
| | - B Mora-Sánchez
- Centro Veterinario de Diagnóstico e Investigación (CEVEDI), Departamento de Veterinaria y Zootecnia, Escuela de Ciencias Agrarias y Veterinarias, Universidad Nacional Autónoma de Nicaragua-León (UNAN-León), León, Nicaragua.,Department of Animal Pathology, Faculty of Veterinary Sciences, Universidad de Zaragoza, Zaragoza, Spain
| | - J Sheleby-Elías
- Centro Veterinario de Diagnóstico e Investigación (CEVEDI), Departamento de Veterinaria y Zootecnia, Escuela de Ciencias Agrarias y Veterinarias, Universidad Nacional Autónoma de Nicaragua-León (UNAN-León), León, Nicaragua
| | - W Jirón
- Centro Veterinario de Diagnóstico e Investigación (CEVEDI), Departamento de Veterinaria y Zootecnia, Escuela de Ciencias Agrarias y Veterinarias, Universidad Nacional Autónoma de Nicaragua-León (UNAN-León), León, Nicaragua
| | - J L Balcázar
- Catalan Institute for Water Research (ICRA), Girona, Spain
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Purification and Characterization of a Novel Thermostable Papain Inhibitor from Moringa oleifera with Antimicrobial and Anticoagulant Properties. Pharmaceutics 2021; 13:pharmaceutics13040512. [PMID: 33917878 PMCID: PMC8068210 DOI: 10.3390/pharmaceutics13040512] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 03/31/2021] [Accepted: 04/01/2021] [Indexed: 11/26/2022] Open
Abstract
Plant cystatins (or phytocystatins) comprise a large superfamily of natural bioactive small proteins that typically act as protein inhibitors of papain-like cysteine proteases. In this report, we present the purification and characterization of the first phytocystatin isolated from Moringa oleifera (MoPI). MoPI has a molecular mass of 19 kDa and showed an extraordinary physicochemical stability against acidic pHs and high temperatures. Our findings also revealed that MoPI is one of the most potent cysteine protease inhibitors reported to date, with Ki and IC50 values of 2.1 nM and 5.7 nM, respectively. More interestingly, MoPI presents a strong antimicrobial activity against human pathogens such as Enterococcus faecalis and Staphylococcus aureus. In addition, MoPI also showed important anticoagulant activity, which is an unprecedented property for this family of protease inhibitors. These results highlight the pharmaceutical potential of this plant and its derived bioactive molecules.
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