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Zhou S, Yang L, Qiu X, Li B, Hu L, Tang Z, Li H, Li S, Fang Z, Chen H. Okra extract alleviates lipopolysaccharide-induced inflammation response through the regulation of bile acids, the receptor-mediated pathway, and gut microbiota. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2024; 104:7501-7513. [PMID: 38757804 DOI: 10.1002/jsfa.13571] [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: 12/27/2023] [Revised: 03/24/2024] [Accepted: 04/29/2024] [Indexed: 05/18/2024]
Abstract
BACKGROUND Okra contains flavonoids and vitamin C as antioxidants and it contains polysaccharides as immunomodulators. Flavonoids regulate the inflammatory response in mice and may be related to gut microbiota. This study therefore aimed to investigate the impact of okra extract (OE) on inflammation in mice and to elucidate its underlying mechanism. METHOD Forty male Kunming (KM) mice were categorized into four groups: the control (CON) group, the lipopolysaccharide stimulation (LPS) group, the 5 mg mL-1 OE intervention (LPS + OE) group, and the 5 mg mL-1 OE supplementation plus mixed antibiotics (LPS + OE + ABX) group. RESULTS The results showed that, compared with the OE group, the expression of inflammatory signaling pathway genes was upregulated and gut barrier genes were inhibited in the OE + ABX group. The Fxr receptor was activated and the abundance of Akkermansia was increased after OE supplementation, whereas the effect was reversed in the OE + ABX group. Meanwhile, Fxr was correlated positively with Akkermansia. CONCLUSION The OE supplementation alleviated the inflammatory response in mice under LPS stimulation, accompanied by changes in gut microbiota and bile acid receptors, whereas the addition of antibiotics caused a disturbance to the gut microbiota in the OE group, thus reducing the effect of OE in alleviating the inflammatory response. © 2024 Society of Chemical Industry.
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Affiliation(s)
- Shanshan Zhou
- College of Food Science, Sichuan Agricultural University, Yaan, China
| | - Li Yang
- College of Food Science, Sichuan Agricultural University, Yaan, China
| | - Xia Qiu
- College of Food Science, Sichuan Agricultural University, Yaan, China
| | - Bohui Li
- College of Food Science, Sichuan Agricultural University, Yaan, China
| | - Liang Hu
- College of Food Science, Sichuan Agricultural University, Yaan, China
| | - Zizhong Tang
- College of Food Science, Sichuan Agricultural University, Yaan, China
| | - Hua Li
- Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, China
| | - Shanshan Li
- College of Food Science, Sichuan Agricultural University, Yaan, China
| | - Zhengfeng Fang
- Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, China
| | - Hong Chen
- College of Food Science, Sichuan Agricultural University, Yaan, China
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2
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Liu Y, Teng J, Huang R, Zhao W, Yang D, Ma Y, Wei H, Chen H, Zhang J, Chen J. Injectable plant-derived polysaccharide hydrogels with intrinsic antioxidant bioactivity accelerate wound healing by promoting epithelialization and angiogenesis. Int J Biol Macromol 2024; 266:131170. [PMID: 38554906 DOI: 10.1016/j.ijbiomac.2024.131170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Revised: 02/21/2024] [Accepted: 03/25/2024] [Indexed: 04/02/2024]
Abstract
Skin wound healing is a complex and dynamic process involving hemostasis, inflammatory response, cell proliferation and migration, and angiogenesis. Currently used wound dressings remain unsatisfactory in the clinic due to the lack of adjustable mechanical property for injection operation and bioactivity for accelerating wound healing. In this work, an "all-sugar" hydrogel dressing is developed based on dynamic borate bonding network between the hydroxyl groups of okra polysaccharide (OP) and xyloglucan (XG). Benefiting from the reversible crosslinking network, the resulting composite XG/OP hydrogels exhibited good shear-thinning and fast self-healing properties, which is suitable to be injected at wound beds and filled into irregular injured site. Besides, the proposed XG/OP hydrogels showed efficient antioxidant capacity by scavenging DPPH activity of 73.9 %. In vivo experiments demonstrated that XG/OP hydrogels performed hemostasis and accelerated wound healing with reduced inflammation, enhanced collagen deposition and angiogenesis. This plant-derived dynamic hydrogel offers a facile and effective approach for wound management and has great potential for clinical translation in feature.
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Affiliation(s)
- Yu Liu
- College of Animal Science and Technology, Guangxi Key Laboratory of Animal Breeding, Disease Control and Prevention, Guangxi University, Nanning 530004, China; Institute of Medical Sciences, The Second Hospital and Shandong University Center for Orthopaedics, Cheeloo College of Medicine, Shandong University, Jinan 250033, China
| | - Jingmei Teng
- Cixi Biomedical Research Institute, Wenzhou Medical University, Cixi 315300, China; Cixi Institute of Biomedical Engineering, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315300, China
| | - Rongjian Huang
- Cixi Institute of Biomedical Engineering, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315300, China
| | - Wei Zhao
- Cixi Biomedical Research Institute, Wenzhou Medical University, Cixi 315300, China; Cixi Institute of Biomedical Engineering, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315300, China
| | - Dan Yang
- College of Animal Science and Technology, Guangxi Key Laboratory of Animal Breeding, Disease Control and Prevention, Guangxi University, Nanning 530004, China; Institute of Medical Sciences, The Second Hospital and Shandong University Center for Orthopaedics, Cheeloo College of Medicine, Shandong University, Jinan 250033, China
| | - Yuxi Ma
- Cixi Institute of Biomedical Engineering, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315300, China
| | - Hua Wei
- Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China.
| | - Hailan Chen
- College of Animal Science and Technology, Guangxi Key Laboratory of Animal Breeding, Disease Control and Prevention, Guangxi University, Nanning 530004, China.
| | - Jiantao Zhang
- Cixi Institute of Biomedical Engineering, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315300, China
| | - Jing Chen
- Institute of Medical Sciences, The Second Hospital and Shandong University Center for Orthopaedics, Cheeloo College of Medicine, Shandong University, Jinan 250033, China.
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Wang X, Hu K, Chen Y, Lai J, Zhang M, Li J, Li Q, Zhao N, Liu S. Effect of Lactiplantibacillus plantarum fermentation on the physicochemical, antioxidant activity and immunomodulatory ability of polysaccharides from Lvjian okra. Int J Biol Macromol 2024; 257:128649. [PMID: 38065452 DOI: 10.1016/j.ijbiomac.2023.128649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2023] [Revised: 11/28/2023] [Accepted: 12/05/2023] [Indexed: 01/26/2024]
Abstract
Okra polysaccharides exhibits a range of biological activities. To date, its processing using microbial fermentation has not been explored. This study investigated the fermentation of okra juice with various lactic acid bacteria, followed by the extraction and characterization of crude polysaccharides (termed OPS-F), in contrast to their non-fermented counterpart (OPS). Changes in physicochemical properties, antioxidant activity and immunomodulatory ability were noted. The results demonstrated that OPS-F had a 7.42-12.53 % increase in total polysaccharides content compared to OPS. However, high-performance size-exclusion chromatography indicated a reduction in the molecular weight of OPS-F (7.9-9.5 × 105 Da) relative to OPS (1.66 × 106 Da). Compared to OPS, OPS-F had reduced levels of mannose, glucose, glucuronic acid and arabinose, but increased rhamnose, galacturonic acid and galactose, exhibiting enhanced solubility and lower apparent viscosity. Fourier transform infrared spectroscopy and nuclear magnetic resonance analysis showed minimal changes in polysaccharide structure post-fermentation. Moreover, despite a decrease in antioxidant activity post-fermentation, OPS-F exhibited superior immunomodulatory potential. In conclusion, fermenting okra juice with lactic acid bacteria alters the physicochemical properties of crude polysaccharides and enhances their immunomodulatory activity, offering a promising approach for developing new functional food resources.
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Affiliation(s)
- Xingjie Wang
- College of Food Science, Sichuan Agricultural University, Ya'an 625014, China
| | - Kaidi Hu
- College of Food Science, Sichuan Agricultural University, Ya'an 625014, China
| | - Yuan Chen
- College of Food Science, Sichuan Agricultural University, Ya'an 625014, China
| | - Jinghui Lai
- College of Food Science, Sichuan Agricultural University, Ya'an 625014, China
| | - Mengmei Zhang
- College of Food Science, Sichuan Agricultural University, Ya'an 625014, China
| | - Jianlong Li
- College of Food Science, Sichuan Agricultural University, Ya'an 625014, China
| | - Qin Li
- College of Food Science, Sichuan Agricultural University, Ya'an 625014, China
| | - Ning Zhao
- College of Food Science, Sichuan Agricultural University, Ya'an 625014, China
| | - Shuliang Liu
- College of Food Science, Sichuan Agricultural University, Ya'an 625014, China.
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4
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Guebebia S, Espinosa-Ruiz C, Zourgui L, Cuesta A, Romdhane M, Esteban MÁ. Effects of okra (Abelmoschus esculentus L.) leaves, fruits and seeds extracts on European sea bass (Dicentrarchus labrax) leukocytes, and their cytotoxic, bactericidal and antioxidant properties. FISH & SHELLFISH IMMUNOLOGY 2023; 138:108799. [PMID: 37187214 DOI: 10.1016/j.fsi.2023.108799] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Revised: 04/29/2023] [Accepted: 05/05/2023] [Indexed: 05/17/2023]
Abstract
Okra, Abelmoschus esculentus L., is a popular vegetable crop with many bioactive compounds. The in vitro immunostimulant, cytotoxic, bactericidal and antioxidant activities of ethanolic extracts obtained from different parts of okra (leaves, fruits, and seeds) were studied. Phytochemical screening of hydroalcoholic extracts of okra leaves, fruits and seeds revealed a significant content of total phenols and flavonoids. Significant effects on the activities of leukocytes in the head kidney of European sea bass (Dicentrarchus labrax) (viability, phagocytic ability and capacity, and respiratory burst), as well as on peroxidase leukocyte contents were detected after incubation for 24 h with different concentrations (0.01-1 mg mL-1) of the extracts. The mean concentrations (0.1 and 0.5 mg mL-1) of the different extracts increased the phagocytic ability and respiratory activity of head kidney leukocytes. However, the mean concentrations (0.1 mg mL-1) of leaf and fruit extracts significantly decreased the peroxidase activity of leukocytes. In addition, all ethanolic okra extracts at higher concentrations (1 mg mL-1) produced a marked reduction in the viability of the DLB-1 cell line compared to the viability recorded in the control samples. In addition, ethanolic extracts used at 0.5 and 1 mg mL-1 had a significant cytotoxic effect on the viability of PLHC-1 cells. Finally, all doses of seed and leaf extracts at higher concentrations (0.5 and 1 mg mL-1) showed significant bactericidal activity on two fish pathogenic bacteria, Vibrio anguillarum and V. harveyi strains. Finally, a remarkable antioxidant activity was detected on the ethanolic extracts. All these results point to their possible use as an alternative to chemical compounds in farmed fish.
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Affiliation(s)
- Salma Guebebia
- University of Gabes, Laboratory of Environment, Catalysis and Process Analysis (LEEEP), National School of Engineers of Gabes (ENIG), Medenine Road, Gabes, 6029, Tunisia
| | - Cristóbal Espinosa-Ruiz
- Immunobiology for Aquaculture Group, Department of Cell Biology and Histology, Faculty of Biology, Campus Regional de Excelencia Internacional "Campus Mare Nostrum", University of Murcia, 30100, Murcia, Spain
| | - Lazhar Zourgui
- University of Gabes, Laboratory of Active Biomolecules Valorisation, Department of Biological Engineering, Research Unit Of, Higher Institute of Applied Biology of Medicine (ISBAM), Tunisia
| | - Alberto Cuesta
- Immunobiology for Aquaculture Group, Department of Cell Biology and Histology, Faculty of Biology, Campus Regional de Excelencia Internacional "Campus Mare Nostrum", University of Murcia, 30100, Murcia, Spain
| | - Mehrez Romdhane
- University of Gabes, Laboratory of Environment, Catalysis and Process Analysis (LEEEP), National School of Engineers of Gabes (ENIG), Medenine Road, Gabes, 6029, Tunisia
| | - M Ángeles Esteban
- Immunobiology for Aquaculture Group, Department of Cell Biology and Histology, Faculty of Biology, Campus Regional de Excelencia Internacional "Campus Mare Nostrum", University of Murcia, 30100, Murcia, Spain.
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Nyagumbo E, Pote W, Shopo B, Nyirenda T, Chagonda I, Mapaya RJ, Maunganidze F, Mavengere WN, Mawere C, Mutasa I, Kademeteme E, Maroyi A, Taderera T, Bhebhe M. Medicinal plants used for the management of respiratory diseases in Zimbabwe: Review and perspectives potential management of COVID-19. PHYSICS AND CHEMISTRY OF THE EARTH (2002) 2022; 128:103232. [PMID: 36161239 PMCID: PMC9489988 DOI: 10.1016/j.pce.2022.103232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Revised: 08/17/2022] [Accepted: 08/23/2022] [Indexed: 06/16/2023]
Abstract
Respiratory diseases have in the recent past become a health concern globally. More than 523 million cases of coronavirus disease (COVID19), a recent respiratory diseases have been reported, leaving more than 6 million deaths worldwide since the start of the pandemic. In Zimbabwe, respiratory infections have largely been managed using traditional (herbal) medicines, due to their low cost and ease of accessibility. This review highlights the plants' toxicological and pharmacological evaluation studies explored. It seeks to document plants that have been traditionally used in Zimbabwe to treat respiratory ailments within and beyond the past four decades. Extensive literature review based on published papers and abstracts retrieved from the online bibliographic databases, books, book chapters, scientific reports and theses available at Universities in Zimbabwe, were used in this study. From the study, there were at least 58 plant families comprising 160 medicinal plants widely distributed throughout the country. The Fabaceae family had the highest number of medicinal plant species, with a total of 21 species. A total of 12 respiratory ailments were reportedly treatable using the identified plants. From a total of 160 plants, colds were reportedly treatable with 56, pneumonia 53, coughs 34, chest pain and related conditions 29, asthma 25, tuberculosis and spots in lungs 22, unspecified respiratory conditions 20, influenza 13, bronchial problems 12, dyspnoea 7, sore throat and infections 5 and sinus clearing 1 plant. The study identified potential medicinal plants that can be utilised in future to manage respiratory infections.
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Affiliation(s)
- Elliot Nyagumbo
- Department of Biochemistry, Faculty of Medicine and Health Sciences, Midlands State University, Gweru, Zimbabwe
| | - William Pote
- Ethnobiology-based Drug discovery, Research and Development Trust, Gweru, Zimbabwe
- Department of Physiology, School of Medicine and Health Sciences, Great Zimbabwe University, Masvingo, Zimbabwe
| | - Bridgett Shopo
- Department of Applied Bioscience and Biotechnology, Faculty of Science and Technology, Midlands State University, Gweru, Zimbabwe
- Ethnobiology-based Drug discovery, Research and Development Trust, Gweru, Zimbabwe
| | - Trust Nyirenda
- Department of Physiology, Faculty of Medicine and Health Sciences, Midlands State University, Gweru, Zimbabwe
- Department of Anatomy and Physiology, Faculty of Medicine, National University of Science and Technology, Bulawayo, Zimbabwe
| | - Ignatius Chagonda
- Department of Agriculture Practice, Faculty of Agriculture, Midlands State University, Gweru, Zimbabwe
| | - Ruvimbo J Mapaya
- Department of Applied Bioscience and Biotechnology, Faculty of Science and Technology, Midlands State University, Gweru, Zimbabwe
| | - Fabian Maunganidze
- Ethnobiology-based Drug discovery, Research and Development Trust, Gweru, Zimbabwe
- Department of Physiology, Faculty of Medicine and Health Sciences, Midlands State University, Gweru, Zimbabwe
| | - William N Mavengere
- Ethnobiology-based Drug discovery, Research and Development Trust, Gweru, Zimbabwe
- Department of Biotechnology, School of Industrial Sciences and Technology, Harare Institute of Technology, Harare, Zimbabwe
| | - Cephas Mawere
- Department of Biotechnology, School of Industrial Sciences and Technology, Harare Institute of Technology, Harare, Zimbabwe
| | - Ian Mutasa
- Ethnobiology-based Drug discovery, Research and Development Trust, Gweru, Zimbabwe
- Department of Physiology, School of Medicine and Health Sciences, Great Zimbabwe University, Masvingo, Zimbabwe
| | - Emmanuel Kademeteme
- Department of Physiology, School of Medicine and Health Sciences, Great Zimbabwe University, Masvingo, Zimbabwe
| | - Alfred Maroyi
- Department of Botany, University of Fort Hare, Alice, South Africa
| | - Tafadzwa Taderera
- Department of Biomedical Sciences, Physiology Unit, University of Zimbabwe, P.O. Box MP167, Mt Pleasant, Harare, Zimbabwe
| | - Michael Bhebhe
- Department of Biochemistry, Faculty of Medicine and Health Sciences, Midlands State University, Gweru, Zimbabwe
- Ethnobiology-based Drug discovery, Research and Development Trust, Gweru, Zimbabwe
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6
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Wang J, Shi D, Bai Y, Zhang T, Wu Y, Liu Z, Jiang L, Ye L, Peng Z, Yuan H, Liu Y. Comprehensive proteomic and metabolomic analysis uncover the response of okra to drought stress. PeerJ 2022; 10:e14312. [PMID: 36444379 PMCID: PMC9700456 DOI: 10.7717/peerj.14312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Accepted: 10/06/2022] [Indexed: 11/24/2022] Open
Abstract
The response of okra to drought stress is very complicated, and the molecular mechanisms underlying this process remains ambiguous up to now. In this study, different degrees of water-stress responses of okra leaf were explained by using transcriptomics and metabolomic approaches. The photosynthesis and glycometabolism in okra leaf were both adversely affected by drought stress, leading to inhibition of the carbohydrate metabolic process, and then influencing the secondary plant metabolism. Further, drought stress disturbed amino acid metabolism, especially for the tyrosine-derived pathway as well as arginine and proline metabolism, which have been shown to be significantly enriched under water withholding conditions based on multi-omics conjoint analysis (transcriptome, proteome and metabolome). In-depth analysis of the internal linkages between differentially expressed transcripts, proteins, and metabolites decidedly indicate that tyrosine metabolism could confer tolerance to drought stress by influencing carbon and nitrogen metabolism. These findings provide a whole framework of the regulation and relationships of major transcripts and peptides related to secondary metabolism, particularly, the role of critical proteins and metabolite involved in the change of amino acid metabolism in response to drought stress.
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Li W, Li J, Wang J, He Y, Hu YC, Wu DT, Zou L. Effects of various degrees of esterification on antioxidant and immunostimulatory activities of okra pectic-polysaccharides. Front Nutr 2022; 9:1025897. [PMID: 36337617 PMCID: PMC9630948 DOI: 10.3389/fnut.2022.1025897] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Accepted: 10/06/2022] [Indexed: 01/05/2024] Open
Abstract
Pectic-polysaccharides are considered as one of the most abundant bioactive components in okra, which possess various promising health-promoting effects. However, the knowledge regarding the structure-bioactivity relationship of okra pectic-polysaccharides (OPP) is still limited. In this study, effects of various degrees of esterification (DEs) on in vitro antioxidant and immunostimulatory activities of OPP were analyzed. Results displayed that OPP with high (42.13%), middle (25.88%), and low (4.77%) DE values were successfully prepared by mild alkaline de-esterification, and their primary chemical structures (compositional monosaccharide and glycosidic linkage) and molecular characteristics (molecular weight distribution, particle size, and rheological property) were overall stable. Additionally, results showed that the notable decrease of DE value did not significantly affect antioxidant activities [2,2'-azino-bis (3-ethylbenzthiazoline-6-sulphonic acid) (ABTS) and nitric oxide (NO) radical scavenging abilities as well as ferric reducing antioxidant power (FRAP)] of OPP, suggesting that the DE was not closely related to its antioxidant activity. In fact, the slight decrease of antioxidant activity of OPP after the alkaline de-esterification might be attributed to the slight decrease of uronic acid content. Nevertheless, the immunostimulatory effect of OPP was closely related to its DE, and a suitable degree of acetylation was beneficial to its in vitro immunostimulatory effect. Besides, the complete de-acetylation resulted in a remarkable reduction of immune response. The findings are beneficial to better understanding the effect of DE value on antioxidant and immunomodulatory activities of OPP, which also provide theoretical foundations for developing OPP as functional foods or health products.
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Affiliation(s)
- Wei Li
- Key Laboratory of Coarse Cereal Processing (Ministry of Agriculture and Rural Affairs), Sichuan Engineering and Technology Research Center of Coarse Cereal Industrialization, School of Food and Biological Engineering, Chengdu University, Chengdu, Sichuan, China
- School of Preclinical Medicine, Chengdu University, Chengdu, Sichuan, China
| | - Jie Li
- Key Laboratory of Coarse Cereal Processing (Ministry of Agriculture and Rural Affairs), Sichuan Engineering and Technology Research Center of Coarse Cereal Industrialization, School of Food and Biological Engineering, Chengdu University, Chengdu, Sichuan, China
| | - Jin Wang
- Key Laboratory of Coarse Cereal Processing (Ministry of Agriculture and Rural Affairs), Sichuan Engineering and Technology Research Center of Coarse Cereal Industrialization, School of Food and Biological Engineering, Chengdu University, Chengdu, Sichuan, China
| | - Yuan He
- Sichuan Institute of Food Inspection, Chengdu, Sichuan, China
| | - Yi-Chen Hu
- Key Laboratory of Coarse Cereal Processing (Ministry of Agriculture and Rural Affairs), Sichuan Engineering and Technology Research Center of Coarse Cereal Industrialization, School of Food and Biological Engineering, Chengdu University, Chengdu, Sichuan, China
| | - Ding-Tao Wu
- Key Laboratory of Coarse Cereal Processing (Ministry of Agriculture and Rural Affairs), Sichuan Engineering and Technology Research Center of Coarse Cereal Industrialization, School of Food and Biological Engineering, Chengdu University, Chengdu, Sichuan, China
| | - Liang Zou
- Key Laboratory of Coarse Cereal Processing (Ministry of Agriculture and Rural Affairs), Sichuan Engineering and Technology Research Center of Coarse Cereal Industrialization, School of Food and Biological Engineering, Chengdu University, Chengdu, Sichuan, China
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Ormanli E, Bayraktar O, Şahar U, Tavman S, Kumcuoglu S. Development and characterization of films based on okra polysaccharides and whey protein isolate. JOURNAL OF FOOD MEASUREMENT AND CHARACTERIZATION 2022. [DOI: 10.1007/s11694-022-01598-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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9
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Kan Y, Liu Y, Huang Y, Zhao L, Jiang C, Zhu Y, Pang Z, Hu J, Pang W, Lin W. The regulatory effects of
Pseudostellaria heterophylla
polysaccharide on immune function and gut flora in immunosuppressed mice. Food Sci Nutr 2022; 10:3828-3841. [DOI: 10.1002/fsn3.2979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2021] [Revised: 05/31/2022] [Accepted: 06/17/2022] [Indexed: 11/10/2022] Open
Affiliation(s)
- Yongjun Kan
- Fujian Agriculture and Forestry University Fuzhou China
- Fujian Academy of Chinese Medical Sciences Fuzhou China
| | - Yingying Liu
- The Second Affiliated Hospital of Fujian University of Traditional Chinese Medicine Fuzhou China
| | - Yating Huang
- Fujian University of Traditional Chinese Medicine Fuzhou China
| | - Li Zhao
- Fujian Academy of Chinese Medical Sciences Fuzhou China
| | - Chang Jiang
- Fujian Academy of Chinese Medical Sciences Fuzhou China
| | - Yanjin Zhu
- Fujian University of Traditional Chinese Medicine Fuzhou China
| | - Ziqin Pang
- Fujian Agriculture and Forestry University Fuzhou China
| | - Juan Hu
- Fujian Academy of Chinese Medical Sciences Fuzhou China
- The Second Affiliated Hospital of Fujian University of Traditional Chinese Medicine Fuzhou China
- Fujian University of Traditional Chinese Medicine Fuzhou China
| | - Wensheng Pang
- The Second Affiliated Hospital of Fujian University of Traditional Chinese Medicine Fuzhou China
- Fujian University of Traditional Chinese Medicine Fuzhou China
| | - Wenxiong Lin
- Fujian Agriculture and Forestry University Fuzhou China
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10
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Li M, Wang J, Ye Y, Xiong S, Liu Y. Structural characterization and anti-inflammatory activity of a pectin polysaccharide AP2-c from the lignified okra. J Food Biochem 2022; 46:e14380. [PMID: 35976799 DOI: 10.1111/jfbc.14380] [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: 06/30/2022] [Revised: 07/23/2022] [Accepted: 07/29/2022] [Indexed: 11/29/2022]
Abstract
In this paper, a pectin polysaccharide AP2-c with molecular weight 6.69 × 105 Da was obtained from the lignified okra. The monosaccharide composition analysis indicated that AP2-c consisted of galactose, rhamnose and galacturonic acid in a molar ratio of 2.3: 1.5: 1.5. The structural characterization indicated that the main chain of AP2-c was composed of →2)-α-L-Rhap-(1→ and →4)-α-D-GalAp-(1→. →2)-α-L-Rhap-(1→ was branched at position O-4 and the branched chain consisted of →3,6)-β-D-Galp-(1→, →6)-β-D-Galp-(1→, α-L-Rhap-(1→ and β-D-Galp-(1→. AP2-c could inhibit the mRNA expression levels of TNF-α, IL-1β and iNOS in LPS-induced macrophages with a dose-dependent manner. Furthermore, AP2-c inhibited the phosphorylation of IκB and p65 via NF-κB pathway. The results indicated that AP2-c had obvious anti-inflammatory activity. PRACTICAL APPLICATIONS: When okra seeds were harvested, lignified okra was always abandoned as waste and had not been fully used for exploitation. Nevertheless, it accounted for more than half of the total plant's weight and was abundant in cell wall polysaccharides, which were the main components of okra to perform a variety of biological functions. In the research, the purified pectin polysaccharide AP2-c was obtained from lignified okra and its physicochemical properties, structural features and anti-inflammatory activity were systematically researched. It was detected that AP2-c exhibited anti-inflammatory activity by blocking NF-κB pathway and thus lowering the expression of related inflammatory factors. The results have significant implications for the value-added application of okra and its processing side products can obviously help to promote the anti-inflammatory application of AP2-c and avoid wasting resources.
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Affiliation(s)
- Mengxin Li
- Engineering Research Center of Bio-process, Ministry of Education, Hefei University of Technology, Hefei, People's Republic of China.,School of Food and Biological Engineering, Hefei University of Technology, Hefei, People's Republic of China
| | - Junhui Wang
- Engineering Research Center of Bio-process, Ministry of Education, Hefei University of Technology, Hefei, People's Republic of China.,School of Food and Biological Engineering, Hefei University of Technology, Hefei, People's Republic of China
| | - Yunfang Ye
- School of Food and Biological Engineering, Hefei University of Technology, Hefei, People's Republic of China
| | - Shanqiang Xiong
- School of Food and Biological Engineering, Hefei University of Technology, Hefei, People's Republic of China
| | - Yong Liu
- Engineering Research Center of Bio-process, Ministry of Education, Hefei University of Technology, Hefei, People's Republic of China.,School of Food and Biological Engineering, Hefei University of Technology, Hefei, People's Republic of China
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11
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Pramudya M, Dewi FRP, Wong RW, Anggraini DW, Winarni D, Wahyuningsih SPA. Anti-cancer activity of an ethanolic extract of red okra pods (Abelmoschus esculentus L. Moench) in rats induced by N-methyl-N-nitrosourea. Vet World 2022; 15:1177-1184. [PMID: 35765486 PMCID: PMC9210857 DOI: 10.14202/vetworld.2022.1177-1184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Accepted: 03/23/2022] [Indexed: 12/24/2022] Open
Abstract
Background and Aim: Breast cancer is the most frequent malignancy in women. The consumption of phytochemical components from plants may play an essential role in preventing and treating this cancer. This study aimed to investigate the anti-cancer activity of an ethanolic extract of red okra pods (EEROP) in rats (Rattus norvegicus) induced by N-methyl-N-nitrosourea (MNU).
Materials and Methods: The experimental animals were divided into six groups (n=5/group), namely, KN (normal control, without any treatment), K– (negative control, exposed to MNU without EEROP), K+ (positive control, exposed to MNU and Methotrexate), and the treatment Groups P1, P2, and P3 (exposed to MNU and EEROP at doses of 50, 100, and 200 mg/kg body weight [BW], respectively). Intraperitoneal delivery of MNU and EEROP oral administration was carried out for 8 weeks. After the end of treatment, the parameters of cytokines, CD4+ and CD8+ T cells, and mammary gland histology were measured.
Results: The results showed that EEROP at doses of 100 and 200 mg/kg BW significantly downregulated interleukin (IL)-6, IL-1β, tumor necrosis factor (TNF)-α, IL-17, IL-10, and tumor growth factor-β (p<0.05). In addition, doses of 200 mg/kg BW significantly increased the activity of CD4+ and CD8+ T cells, prevented the proliferation of mammary gland epithelial cells, and yielded a significantly thinner epithelium of the mammary gland (p<0.05).
Conclusion: It can be concluded that EEROP was an effective anti-cancer agent by modulating the immune response. Further studies using a nanoparticle system are warranted to achieve optimal working conditions for these bioactive compounds.
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Affiliation(s)
- Manikya Pramudya
- Department of Biology, Faculty of Science and Technology, Universitas Airlangga, Campus C, Mulyorejo, Surabaya, Indonesia
| | - Firli Rahmah Primula Dewi
- Department of Biology, Faculty of Science and Technology, Universitas Airlangga, Campus C, Mulyorejo, Surabaya, Indonesia
| | - Richard W. Wong
- Cell Bionomics Research Unit, Institute for Frontier Science Initiative, Kanazawa University, Kanazawa 920-1192, Japan
| | - Devinta Wahyu Anggraini
- Department of Biology, Faculty of Science and Technology, Universitas Airlangga, Campus C, Mulyorejo, Surabaya, Indonesia
| | - Dwi Winarni
- Department of Biology, Faculty of Science and Technology, Universitas Airlangga, Campus C, Mulyorejo, Surabaya, Indonesia
| | - Sri Puji Astuti Wahyuningsih
- Department of Biology, Faculty of Science and Technology, Universitas Airlangga, Campus C, Mulyorejo, Surabaya, Indonesia
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12
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Yue F, Xu J, Zhang S, Hu X, Wang X, Lü X. Structural features and anticancer mechanisms of pectic polysaccharides: A review. Int J Biol Macromol 2022; 209:825-839. [PMID: 35447258 DOI: 10.1016/j.ijbiomac.2022.04.073] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2021] [Revised: 03/01/2022] [Accepted: 04/09/2022] [Indexed: 02/07/2023]
Abstract
The anticancer activity of pectic polysaccharides (PPs) was proved by numerous studies, and which also indicated that the bioactivity of PPs was closely related to its complicated structures. Based on the summary and analysis about structure characteristics and corresponding enzymatic process of the reported PPs, the anticancer mechanism and related structural features were systematically clarified. It was found that not only the direct effects on the cancer cells by proliferation inhibition or apoptosis, but also the regulation of immune system, gut microbiota and gut metabolism as indirect effects, jointly played important roles in the anticancer of PPs. Nevertheless, during the study of PPs as promising anticancer components, the exact structure-function relationship, digestion process in vivo, and comprehensive action mechanism are still not well understanding. With the unveiling of the proposed issues, it is believed that PPs are promising to be exploited as effective cancer therapy/adjunctive therapy drugs or functional foods.
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Affiliation(s)
- Fangfang Yue
- College of Food Science and Engineering, Northwest Agriculture and Forestry University, Yangling 712100, Shaanxi, China
| | - Jiaxin Xu
- College of Food Science and Engineering, Northwest Agriculture and Forestry University, Yangling 712100, Shaanxi, China
| | - Sitan Zhang
- College of Food Science and Engineering, Northwest Agriculture and Forestry University, Yangling 712100, Shaanxi, China
| | - Xinyu Hu
- College of Food Science and Engineering, Northwest Agriculture and Forestry University, Yangling 712100, Shaanxi, China
| | - Xin Wang
- College of Food Science and Engineering, Northwest Agriculture and Forestry University, Yangling 712100, Shaanxi, China.
| | - Xin Lü
- College of Food Science and Engineering, Northwest Agriculture and Forestry University, Yangling 712100, Shaanxi, China.
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13
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Agregán R, Pateiro M, Bohrer BM, Shariati MA, Nawaz A, Gohari G, Lorenzo JM. Biological activity and development of functional foods fortified with okra ( Abelmoschus esculentus). Crit Rev Food Sci Nutr 2022; 63:6018-6033. [PMID: 35037792 DOI: 10.1080/10408398.2022.2026874] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The Abelmoschus esculentus plant, better known as okra, is an interesting crop from a nutritional standpoint. The okra plant is native to the African region but can now be found throughout tropical and subtropical areas of the world. This plant, known for its healing abilities, has been used as a traditional medicine to treat several diseases and external ailments, such as wounds or boils. This article reviews the potential health benefits from okra consumption, as well as the bioactive compounds that are suggested to be responsible. Furthermore, the okra plant and its derivatives have been evaluated in the formulation and manufacture of new functional food products. The latest advances in this direction, which includes characterizing the technical properties of functional foods fortified with okra are also presented in this review. A series of bioactive compounds such as flavonoids and catechins have been found in the okra plant, which were associated with numerous biological properties observed in research studies that reported potential anti-diabetic, anti-cancer, anti-hypertensive, and antimicrobial effects, among others, as a result of their consumption. These potential health benefits contribute to the development of new and useful functional foods, with okra (or its derivatives) being used as the highlighted ingredient.
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Affiliation(s)
- Rubén Agregán
- Centro Tecnológico de la Carne de Galicia, Parque Tecnológico de Galicia, Ourense, Spain
| | - Mirian Pateiro
- Centro Tecnológico de la Carne de Galicia, Parque Tecnológico de Galicia, Ourense, Spain
| | - Benjamin M Bohrer
- Department of Animal Sciences, The Ohio State University, Columbus, Ohio, USA
| | - Mohammad Ali Shariati
- Department of Scientific Research, K.G. Razumovsky Moscow State University of Technologies and Management (The First Cossack University), 109004 Moscow, Russia Federation
| | - Asad Nawaz
- Jiangsu Key Laboratory of Crop Genetics and Physiology, College of Agriculture, Yangzhou University, Yangzhou, China
| | - Gholamreza Gohari
- Faculty of Agriculture, Department of Horticulture, University of Maragheh, Maragheh, Iran
| | - José M Lorenzo
- Centro Tecnológico de la Carne de Galicia, Parque Tecnológico de Galicia, Ourense, Spain
- Área de Tecnología de los Alimentos, Facultad de Ciencias de Ourense, Universidad de Vigo, Ourense, Spain
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Ko MN, Hyun SB, Ahn KJ, Hyun CG. Immunomodulatory effects of Abelmoschus esculentus water extract through MAPK and NF-κB signaling in RAW 264.7 cells. BIOTECHNOLOGY NOTES 2022. [PMCID: PMC9156435 DOI: 10.1016/j.biotno.2022.05.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
During the current COVID-19 pandemic, the world is facing a new, highly contagious virus that suppresses innate immunity as one of its early virulence mechanisms. Therefore, finding new methods to enhance innate immunity is a promising strategy to attenuate the effects of this major global health problem. With the aim of characterizing bioactive ingredients as immune-enhancing agents, this study focuses on Abelmoschus esculentus (okra), which has several previously demonstrated bioactivities. Firstly, we investigated the immune-stimulatory effects of okra leaf ethanol extract (OLE) and okra leaf water extract (OLW) on nitric oxide (NO) production in macrophages. OLE significantly decreased nitrite accumulation in LPS-stimulated RAW 264.7 cells, indicating that it potentially inhibited NO production in a concentration-dependent manner. In contrast, OLW significantly enhanced the production of prostaglandin E2 (PGE2), tumor necrosis factor-α (TNF-α), interleukin-1β (IL-1β), and NO in a dose-dependent manner. OLW also increased the expression levels of NO synthase (iNOS) and cyclooxygenase (COX)-2, potentially explaining the OLW-induced increase in NO and PGE2 production. In addition, OLW stimulated the phosphorylation of mitogen-activated protein kinases (MAPKs; ERK, p38, and JNK) as well as the activation and subsequent nuclear translocation of nuclear factor κB (NF-κB). This indicated that OLW activates macrophages to secrete PGE2, TNF-α, IL-1β, and NO, inducing iNOS and COX-2 expression via activation of the NF-κB and MAPK signaling pathways. In conclusion, our results demonstrate that OLW can effectively promote the activation of macrophages, suggesting that OLW may possess potent immunomodulatory effects and should be explored as a potential health-promoting materials to boost the immune system.
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Malek Mahdavi A, Javadivala Z, Ahmadian E. Effects of Okra (Abelmoschus esculentus L.) on inflammatory mediators: A systematic review of preclinical studies. Food Funct 2022; 13:3159-3169. [DOI: 10.1039/d1fo03915f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Objective: Present study aimed to systematically review the available investigations about the effects of okra on important inflammatory mediators including C-reactive protein (CRP), interleukin-1β (IL-1β), interleukin-6 (IL-6), and tumor necrosis...
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Al-Shawi AAA, Hameed MF, Hussein KA, Thawini HK. Review on the “Biological Applications of Okra Polysaccharides and Prospective Research”. FUTURE JOURNAL OF PHARMACEUTICAL SCIENCES 2021. [DOI: 10.1186/s43094-021-00244-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Abstract
Background
Vegetables with edible parts like flowers, fruits, stems, leaves, fibers, roots, and seeds are rich sources of essential vitamins, minerals, and trace elements with various medical functions. Many diseases such as osteoporosis, diabetes, high cholesterol, obesity, heart diseases, and stroke are caused by poor, healthy lifestyle or nutrition. Therefore, generation of new biological functions from vegetables will increase the interests of scientific research and applications.
Main body
Okra is an edible vegetable which contains vitamins, fiber, carbohydrates, protein, and minerals. The bioactive compounds of okra possess various biological activities such as anti-inflammation, antibacterial, anticancer, and antifungal. Polysaccharides from vegetables or medicinal plants are important large molecules with various biological applications. In this review, we will focus on the biological properties and nanoparticle uses of polysaccharides isolated from okra and the extraction methods of polysaccharides.
Conclusion
This review will enhance the scientific research findings of okra polysaccharides and recommend future prospective of polysaccharides for biological uses.
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Liu W, Gong L. Anti-demodectic effects of okra eyelid patch in Demodex blepharitis compared with tea tree oil. Exp Ther Med 2021; 21:338. [PMID: 33732311 PMCID: PMC7903416 DOI: 10.3892/etm.2021.9769] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Accepted: 01/18/2021] [Indexed: 02/07/2023] Open
Abstract
Demodex infection gradually develops to Demodex blepharitis, which is characterized as chronic inflammation of the eyelid and meibomian gland (MG) and ultimately leads to MG dysfunction. In the present prospective study, the anti-demodectic effects of an okra eyelid patch in patients Demodex blepharitis were investigated. A total of 52 patients with Demodex blepharitis with ocular discomfort were recruited. Patients were randomized to receive either an okra eyelid patch treatment (treatment group, n=27) or tea tree oil (TTO) eye care patch treatment (control group, n=25) for three months. The Demodex count, the ocular surface disease index (OSDI) score, MG expressibility (MGE) and meibum quality, Schirmer I test (SIT), tear break-up time (TBUT) and corneal fluorescein staining (CFS) were determined prior to treatment and after 1 and 3 months of treatment. Changes in the parameters were compared between the treatment group and control group after 1 and 3 months of treatment. The average survival time in the okra group was 115.25±11.87 min, which was significantly lower compared with the average ST of 378.75±37.94 min in the blank group (P<0.01). After 3 months of okra eyelid patch treatment, the Demodex count was significantly reduced from 10.15±4.53 to 1.30±1.41 (P<0.01) and the OSDI score of the patients was reduced by 16.84±10.17 (P<0.01). There was no significant difference in the Demodex count (P=0.716) and OSDI (P=0.873) between the treatment and control groups. The rate of complete Demodex eradication in the treatment group (11/27, 40.74%) was slightly lower than that in the control group (12/25, 48%), but there was no significant difference between the two groups (χ2=0.277, P=0.598). Regarding the other ocular parameters, no significant difference was observed in the TBUT, meibum quality and MGE between the two groups (P<0.05). TTO group has a significantly improvement compared with Okra group in terms of SIT (P=0.035) and CFS (P=0.023). In conclusion, okra eyelid patch treatment is able to significantly eradicate ocular Demodex as well as markedly alleviate ocular symptoms. Due to causing less irritation than TTO, the okra eyelid patch may be more suitable for sensitive patients with Demodex blepharitis, such as the elderly and children. The study was registered as a clinical trial in the Chinese Clinical Trial Registry (ChiCTR) in November 2018 (registration no. ChiCTR-1,800,019,466).
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Affiliation(s)
- Wenting Liu
- Department of Ophthalmology and Vision Science, The Eye, Ear, Nose and Throat Hospital of Fudan University, Shanghai 200031, P.R. China
- NHC Key Laboratory of Myopia, Laboratory of Myopia, Chinese Academy of Medical Sciences, Fudan University, Shanghai 200031, P.R. China
| | - Lan Gong
- Department of Ophthalmology and Vision Science, The Eye, Ear, Nose and Throat Hospital of Fudan University, Shanghai 200031, P.R. China
- NHC Key Laboratory of Myopia, Laboratory of Myopia, Chinese Academy of Medical Sciences, Fudan University, Shanghai 200031, P.R. China
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Anti-Inflammatory and Antioxidant Properties of Ethanol Extracts of Raw, Blanched, Steamed, and Sous-Vide Cooked Okra (Abelmoschus esculentus L.) in LPS or H2O2-Treated RAW264.7 Cells. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11052432] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Okra (Abelmoschus esculentus L.) is a plant belonging to the Malvaceae family. All parts of okra, including the pod, leaf, and branch, are edible, with the pod being especially enriched with sugars, dietary fibers, minerals, vitamins, and antioxidants. It has beneficial effect against colitis, hepatitis, and gastric ulcer. However, studies on okra’s anti-inflammatory effects remain limited. It is known that cooking methods change nutrition and functional compounds in foods. In this study, we prepared ethanolic extracts of okra using four different cooking methods (raw, blanching, steaming, and sous-vide), and analyzed anti-inflammatory and antioxidant effects on lipopolysaccharide- (LPS) or hydrogen peroxide (H2O2)-treated RAW264.7 macrophages. Cell viability was similar between all four cooking methods, confirming that okra extracts (≤200 μg/mL) were not cytotoxic. All cooking methods inhibited nitric oxide production (indicator of inflammatory responses). Sous-vide cooking showed low inhibitory effect at 100–200 μg/mL of okra extract. Moreover, examining the mRNA expression of inducible cycloxygenase-2 (COX-2), inducible nitric oxide synthase (iNOS) and inflammatory cytokines (tumor necrosis factor alpha (TNF-α), interleukin 6 (IL-6), and interleukin 1-beta (IL-1β)) showed inhibitory effects by all cooking methods. Reactive oxygen species (ROS) levels were also reduced for all cooking methods, with sous-vide cooking showing the highest rate of reduction. These results confirm the anti-inflammatory and antioxidant effects of raw and multimethod cooked okra. Notably, sous-vide cooking showed the greatest potential to improve okra’s therapeutic effects.
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Dual role of immunomodulation by crude polysaccharide from okra against carcinogenic liver injury in mice. Heliyon 2021; 7:e06183. [PMID: 33659734 PMCID: PMC7892927 DOI: 10.1016/j.heliyon.2021.e06183] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2020] [Revised: 12/31/2020] [Accepted: 01/29/2021] [Indexed: 01/08/2023] Open
Abstract
Polysaccharides have long been recognized as the anticancer agent with low toxicity and slight side effects. Okra (Abelmoschus esculentus L.), a flowering plant from the Malvaceae family that is found in tropical, subtropical, and warm temperate regions around the world. Hence, no in vivo studies have addressed the anticancer and immunomodulatory potential of polysaccharides from okra pods grown in Indonesia. This study aims to investigate the effect of okra raw polysaccharide extract (ORPE) to immune cells and cytokines of mice with hepatocarcinogenic conditions induced by diethylnitrosamine (DEN). Thirty-six male mice (BALB/C, 3–4 months old) were divided into six groups: the normal control group (CN), negative control (C-), positive control giving doxorubicin (C+), and three groups of ORPE treatment given the dose of 50 (P1), 100 (P2) and 200 (P3) mg/kg body weight. The administration of ORPE directly suppressed the regulatory T cells accumulations, suppressed macrophages activations, and balanced the number of effector T cells. However, it promoted CD8+ T cell activation at a low dose and increased interleukin-2 levels at all doses. These results suggest that ORPE has unique dual-functions as immunosuppressant and immunostimulant which can be a foundation for the application of the ORPE in the nutraceutical and pharmaceutical industries.
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Structure analysis of a non-esterified homogalacturonan isolated from Portulaca oleracea L. and its adjuvant effect in OVA-immunized mice. Int J Biol Macromol 2021; 177:422-429. [PMID: 33631260 DOI: 10.1016/j.ijbiomac.2021.02.142] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 02/13/2021] [Accepted: 02/19/2021] [Indexed: 01/16/2023]
Abstract
We isolated and purified a pectin from Portulaca oleracea L. (P. oleracea), and analysed its structure by high-performance size exclusion chromatography (HPSEC), high-performance liquid chromatography (HPLC), gas chromatograph-mass spectrometer (GC-MS), fourier transform infrared spectroscopy (FT-IR), and 1H, 13C nuclear magnetic resonance spectroscopy (NMR). The data indicated that this pectin (designated as POPW-HG) was a linear non-esterified homogalacturonan, which is unique in plants; its molecular weight was around 41.2 kDa. Meanwhile, POPW-HG as an adjuvant was evaluated in the mice immunized with OVA subcutaneously. OVA-specific antibody titres from the sera of immunized mice were tested by ELISA. It showed that POPW-HG significantly enhanced OVA-specific antibody titres (IgG, IgG1, and IgG2b) (p < 0.05) in a dose-dependent manner in the OVA-immunized mice, preliminarily indicating POPW-HG could increase an antibody response, Th1 and Th2 immune response. In addition, the ratio of IgG1/IgG2b suggested POPW-HG induced a Th2-biased response in the OVA-immunized mice. The results demonstrated POPW-HG could be a potential adjuvant candidate in vaccines.
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22
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Xiong B, Zhang W, Wu Z, Liu R, Yang C, Hui A, Huang X, Xian Z. Okra pectin relieves inflammatory response and protects damaged intestinal barrier in caerulein-induced acute pancreatic model. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2021; 101:863-870. [PMID: 33433910 DOI: 10.1002/jsfa.10693] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Revised: 07/09/2020] [Accepted: 07/29/2020] [Indexed: 06/12/2023]
Abstract
BACKGROUND Protecting the intestinal mucosa from being destroyed helps reduce the inflammation caused by acute pancreatitis (AP). In this study, whether okra pectin (OP) could attenuate the inflammation of AP through protecting the intestinal barrier was investigated. RESULTS OP was obtained from crude okra pectin (COP) through the purification by DEAE cellulose 52 column. Supplementation with OP or COP in advance reduced the severity of AP, as revealed by lower serum amylase and lipase levels, abated pancreatic edema, attenuated myeloperoxidase activity and pancreas histology. OP or COP inhibited the production of pancreatic proinflammatory cytokines, including tumor necrosis factor-α and interleukin-6. In addition, the upregulation of AP-related proteins including ZO-1, occludin, the antibacterial peptide-defensin-1 (DEFB1) and cathelicidin-related antimicrobial peptide (CRAMP), as well as the histological examination of colon injuries, demonstrated that OP or COP provision could effectively maintain intestinal barrier function. Ultimately, dietary OP or COP supplementation could inhibit AP-induced intestinal inflammation. For the above, the effect of OP was better than COP. CONCLUSION Dietary OP supplementation could be considered as a preventive method that effectively interferes with intestinal damage and attenuates inflammatory responses trigged by AP. © 2020 Society of Chemical Industry.
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Affiliation(s)
- Baoyi Xiong
- Engineering Research Center of Bio-Process of Ministry of Education, School of Food and Biological Engineering, Hefei University of Technology, Hefei, China
| | - Wencheng Zhang
- Engineering Research Center of Bio-Process of Ministry of Education, School of Food and Biological Engineering, Hefei University of Technology, Hefei, China
| | - Zeyu Wu
- Engineering Research Center of Bio-Process of Ministry of Education, School of Food and Biological Engineering, Hefei University of Technology, Hefei, China
| | - Rui Liu
- Engineering Research Center of Bio-Process of Ministry of Education, School of Food and Biological Engineering, Hefei University of Technology, Hefei, China
| | - Chengying Yang
- Engineering Research Center of Bio-Process of Ministry of Education, School of Food and Biological Engineering, Hefei University of Technology, Hefei, China
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Okra ( Abelmoschus Esculentus) as a Potential Dietary Medicine with Nutraceutical Importance for Sustainable Health Applications. Molecules 2021; 26:molecules26030696. [PMID: 33525745 PMCID: PMC7865958 DOI: 10.3390/molecules26030696] [Citation(s) in RCA: 53] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Revised: 01/20/2021] [Accepted: 01/22/2021] [Indexed: 02/07/2023] Open
Abstract
Recently, there has been a paradigm shift from conventional therapies to relatively safer phytotherapies. This divergence is crucial for the management of various chronic diseases. Okra (Abelmoschus esculentus L.) is a popular vegetable crop with good nutritional significance, along with certain therapeutic values, which makes it a potential candidate in the use of a variety of nutraceuticals. Different parts of the okra fruit (mucilage, seed, and pods) contain certain important bioactive components, which confer its medicinal properties. The phytochemicals of okra have been studied for their potential therapeutic activities on various chronic diseases, such as type-2 diabetes, cardiovascular, and digestive diseases, as well as the antifatigue effect, liver detoxification, antibacterial, and chemo-preventive activities. Moreover, okra mucilage has been widely used in medicinal applications such as a plasma replacement or blood volume expanders. Overall, okra is considered to be an easily available, low-cost vegetable crop with various nutritional values and potential health benefits. Despite several reports about its therapeutic benefits and potential nutraceutical significance, there is a dearth of research on the pharmacokinetics and bioavailability of okra, which has hampered its widespread use in the nutraceutical industry. This review summarizes the available literature on the bioactive composition of okra and its potential nutraceutical significance. It will also provide a platform for further research on the pharmacokinetics and bioavailability of okra for its possible commercial production as a therapeutic agent against various chronic diseases.
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Zhu XM, Xu R, Wang H, Chen JY, Tu ZC. Structural Properties, Bioactivities, and Applications of Polysaccharides from Okra [ Abelmoschus esculentus (L.) Moench]: A Review. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:14091-14103. [PMID: 33205968 DOI: 10.1021/acs.jafc.0c04475] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Okra [Abelmoschus esculentus (L.) Moench], as a kind of nutritive vegetable, is rich in flavonoids, polyphenols, polysaccharides, amino acids, and other bioactive substances and has various biological activities. As one of main bioactive components, okra polysaccharides (OPs), mainly comprising pectic polysaccharides, have various biological activities. OPs have been extensively investigated in recent years. Many studies characterized structures of OPs obtained by different extraction methods, which were confirmed to be rhamnogalacturonan-I-type polysaccharides in most cases. OPs have a thick and slimy texture, suggesting that they can be a promising source of texture modifiers for complex food matrices. They have various biological activities, such as antioxidant activity, immunomodulatory activity, hypoglycaemic activity, and improving intestinal function. Therefore, OPs may potentially serve as novel immunomodulators or an adjuvant for diabetic nephropathy. Up to now, there is no specific summary on the research progress of OPs. In this paper, the latest research progress on the extraction, purification, characterization, rheological properties, biological activities, and applications of OPs is reviewed, to provide the reference for the processing and comprehensive utilization of OPs in the future.
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Affiliation(s)
- Xiu-Mei Zhu
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, Jiangxi 330047, People's Republic of China
| | - Rou Xu
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, Jiangxi 330047, People's Republic of China
| | - Hui Wang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, Jiangxi 330047, People's Republic of China
| | - Jin-Yin Chen
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, Jiangxi 330047, People's Republic of China
- Jiangxi Key Laboratory for Postharvest Technology and Nondestructive Testing of Fruits & Vegetables, Collaborative Innovation Center of Post-harvest Key Technology and Quality Safety of Fruits and Vegetables in Jiangxi Province, Jiangxi Agricultural University, Nanchang, Jiangxi 330045, People's Republic of China
- College of Materials and Chemical Engineering, Pingxiang University, Pingxiang, Jiangxi 337055, People's Republic of China
| | - Zong-Cai Tu
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, Jiangxi 330047, People's Republic of China
- Engineering Research Center of Freshwater Fish High-Value Utilization of Jiangxi Province, College of Life Sciences, Jiangxi Normal University, Nanchang, Jiangxi 330022, People's Republic of China
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Chen Y, Zhou R, He L, Wang F, Yang X, Teng L, Li C, Liao S, Zhu Y, Yang Y, Chen H. Okra polysaccharide-2 plays a vital role on the activation of RAW264.7 cells by TLR2/4-mediated signal transduction pathways. Int Immunopharmacol 2020; 86:106708. [PMID: 32570039 DOI: 10.1016/j.intimp.2020.106708] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 06/11/2020] [Accepted: 06/11/2020] [Indexed: 01/18/2023]
Abstract
Polysaccharide is the main active component of okra (Abelmoschus esculentus L.) and it can effectively stimulate the activation of macrophages. However, the immune regulatory mechanism is still not clear. Therefore, the present study aimed to reveal the possible mechanism by investigating the effect of okra polysaccharide-2 (RPS-2) on Toll-like receptor (TLR) 2/4-mediated signal transduction pathways in RAW264.7 murine macrophage cells. In order to confirm whether RPS-2 stimulated macrophages activation via TLR2 or TLR4, RAW264.7 murine macrophage cells were pretreated with TLR2/4 inhibitors for 1 h before RPS-2 treatment, and then the NO, IL-10, TNF-α levels were tested. The results indicated that both TLR2 and TLR4 were the keys of immune regulatory effect of RPS-2. Afterwards, the effect of RPS-2 on NF-κB and MAPKs signaling pathways were studied by western blot analysis. It showed RPS-2 induced the phosphorylation of p65, IκBα, p38, ERK1/2 and JNK. At the same time, the specific inhibitors reduced these phosphorylation levels as well as NO, IL-10 and TNF-α amounts. In a word, RPS-2 activated macrophages by NF-κB and MAPKs signal transduction pathways.
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Affiliation(s)
- Yun Chen
- Hainan Key Lab of Tropical Animal Reproduction & Breeding and Epidemic Disease Research, Institute of Traditional South Chinese Veterinary Pharmacology, College of Animal Science and Technology, Hainan University, Haikou 570228, PR China
| | - Ruigang Zhou
- Hainan Key Lab of Tropical Animal Reproduction & Breeding and Epidemic Disease Research, Institute of Traditional South Chinese Veterinary Pharmacology, College of Animal Science and Technology, Hainan University, Haikou 570228, PR China
| | - Lixing He
- Hainan Key Lab of Tropical Animal Reproduction & Breeding and Epidemic Disease Research, Institute of Traditional South Chinese Veterinary Pharmacology, College of Animal Science and Technology, Hainan University, Haikou 570228, PR China
| | - Fengyang Wang
- Hainan Key Lab of Tropical Animal Reproduction & Breeding and Epidemic Disease Research, Institute of Traditional South Chinese Veterinary Pharmacology, College of Animal Science and Technology, Hainan University, Haikou 570228, PR China
| | - Xin Yang
- Hainan Key Lab of Tropical Animal Reproduction & Breeding and Epidemic Disease Research, Institute of Traditional South Chinese Veterinary Pharmacology, College of Animal Science and Technology, Hainan University, Haikou 570228, PR China
| | - Ling Teng
- Hainan Key Lab of Tropical Animal Reproduction & Breeding and Epidemic Disease Research, Institute of Traditional South Chinese Veterinary Pharmacology, College of Animal Science and Technology, Hainan University, Haikou 570228, PR China
| | - Chengheng Li
- Hainan Key Lab of Tropical Animal Reproduction & Breeding and Epidemic Disease Research, Institute of Traditional South Chinese Veterinary Pharmacology, College of Animal Science and Technology, Hainan University, Haikou 570228, PR China
| | - Suya Liao
- Hainan Key Lab of Tropical Animal Reproduction & Breeding and Epidemic Disease Research, Institute of Traditional South Chinese Veterinary Pharmacology, College of Animal Science and Technology, Hainan University, Haikou 570228, PR China
| | - Yongjian Zhu
- Hainan Key Lab of Tropical Animal Reproduction & Breeding and Epidemic Disease Research, Institute of Traditional South Chinese Veterinary Pharmacology, College of Animal Science and Technology, Hainan University, Haikou 570228, PR China
| | - Yuhui Yang
- Hainan Key Lab of Tropical Animal Reproduction & Breeding and Epidemic Disease Research, Institute of Traditional South Chinese Veterinary Pharmacology, College of Animal Science and Technology, Hainan University, Haikou 570228, PR China
| | - Huricha Chen
- Hainan Key Lab of Tropical Animal Reproduction & Breeding and Epidemic Disease Research, Institute of Traditional South Chinese Veterinary Pharmacology, College of Animal Science and Technology, Hainan University, Haikou 570228, PR China.
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The influence of extraction pH on the chemical compositions, macromolecular characteristics, and rheological properties of polysaccharide: The case of okra polysaccharide. Food Hydrocoll 2020. [DOI: 10.1016/j.foodhyd.2019.105586] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Esmaeilzadeh D, Razavi BM, Hosseinzadeh H. Effect of Abelmoschus esculentus (okra) on metabolic syndrome: A review. Phytother Res 2020; 34:2192-2202. [PMID: 32222004 DOI: 10.1002/ptr.6679] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Revised: 02/29/2020] [Accepted: 03/12/2020] [Indexed: 01/01/2023]
Abstract
Metabolic syndrome is a disorder characterized by dyslipidemia, insulin resistance, abdominal fat, high blood pressure, hypertriglyceridemia, and diminished high density lipoprotein cholesterol. Okra (Abelmoschus esculentus L.), routinely called lady's finger, has belonged to the Malvaceae family. Okra is considered as a valuable crop due to the multiple functions of its leaves, buds, flowers, pods, stems, and seeds in traditional and modern medicines. Several bioactive components are presented in different parts of okra including polyphenolic compounds especially oligomeric catechins and flavonol derivatives such as quercetin. The antioxidant, anti-inflammatory, anticancer, immunomodulatory, gastroprotective, neuroprotective, lipid lowering, and antidiabetic effects of okra have been established. Although different in vivo and in vitro studies revealed that okra has an ability to overcome metabolic syndrome symptoms, the lack of clinical studies is notable. So, further clinical trials should be accomplished to confirm the role of okra in metabolic syndrome. The aims of this review are to gather different studies regarding the potential efficacy of okra in metabolic syndrome.
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Affiliation(s)
| | - Bibi Marjan Razavi
- Targeted Drug Delivery Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran.,Department of Pharmacodynamics and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Hossein Hosseinzadeh
- Department of Pharmacodynamics and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.,Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
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Liu Y, Qi J, Luo J, Qin W, Luo Q, Zhang Q, Wu D, Lin D, Li S, Dong H, Chen D, Chen H. Okra in Food Field: Nutritional Value, Health Benefits and Effects of Processing Methods on Quality. FOOD REVIEWS INTERNATIONAL 2019. [DOI: 10.1080/87559129.2019.1695833] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Ying Liu
- College of Food Science, Sichuan Agricultural University, Yaan, Sichuan, China
| | - Jingyi Qi
- College of Food Science, Sichuan Agricultural University, Yaan, Sichuan, China
| | - Junyun Luo
- College of Food Science, Sichuan Agricultural University, Yaan, Sichuan, China
| | - Wen Qin
- College of Food Science, Sichuan Agricultural University, Yaan, Sichuan, China
| | - Qingying Luo
- College of Food Science, Sichuan Agricultural University, Yaan, Sichuan, China
| | - Qing Zhang
- College of Food Science, Sichuan Agricultural University, Yaan, Sichuan, China
| | - Dingtao Wu
- College of Food Science, Sichuan Agricultural University, Yaan, Sichuan, China
| | - Derong Lin
- College of Food Science, Sichuan Agricultural University, Yaan, Sichuan, China
| | - Suqing Li
- College of Food Science, Sichuan Agricultural University, Yaan, Sichuan, China
| | - Hongmin Dong
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Canada
| | - Daiwen Chen
- Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Hong Chen
- College of Food Science, Sichuan Agricultural University, Yaan, Sichuan, China
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Gong X, Huang X, Yang T, Wen J, Zhou W, Li J. Effect of drying methods on physicochemical properties and antioxidant activities of okra pods. J FOOD PROCESS PRES 2019. [DOI: 10.1111/jfpp.14277] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Xiao Gong
- Key Laboratory of Tropical Crop Products Processing of Ministry of Agriculture and Rural Affairs Agricultural Products Processing Research Institute Chinese Academy of Tropical Agricultural Sciences Zhanjiang China
| | - Xiaobing Huang
- Key Laboratory of Tropical Crop Products Processing of Ministry of Agriculture and Rural Affairs Agricultural Products Processing Research Institute Chinese Academy of Tropical Agricultural Sciences Zhanjiang China
| | - Taohua Yang
- Key Laboratory of Tropical Crop Products Processing of Ministry of Agriculture and Rural Affairs Agricultural Products Processing Research Institute Chinese Academy of Tropical Agricultural Sciences Zhanjiang China
| | - Jing Wen
- Key Laboratory of Functional Foods, Ministry of Agriculture Sericultural & Agri‐Food Research Institute Guangdong Academy of Agricultural Sciences Guangzhou China
| | - Wei Zhou
- Key Laboratory of Tropical Crop Products Processing of Ministry of Agriculture and Rural Affairs Agricultural Products Processing Research Institute Chinese Academy of Tropical Agricultural Sciences Zhanjiang China
- Hainan Key Laboratory of Storage & Processing of Fruits and Vegetables Zhanjiang China
| | - Jihua Li
- Key Laboratory of Tropical Crop Products Processing of Ministry of Agriculture and Rural Affairs Agricultural Products Processing Research Institute Chinese Academy of Tropical Agricultural Sciences Zhanjiang China
- Hainan Key Laboratory of Storage & Processing of Fruits and Vegetables Zhanjiang China
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Chen X, Fang D, Zhao R, Gao J, Kimatu BM, Hu Q, Chen G, Zhao L. Effects of ultrasound-assisted extraction on antioxidant activity and bidirectional immunomodulatory activity of Flammulina velutipes polysaccharide. Int J Biol Macromol 2019; 140:505-514. [DOI: 10.1016/j.ijbiomac.2019.08.163] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2019] [Revised: 07/11/2019] [Accepted: 08/18/2019] [Indexed: 01/07/2023]
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31
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Chen J. Effect of okra polysaccharide on the spermatogenesis of KKAy mice. Int J Biol Macromol 2019; 140:98-101. [DOI: 10.1016/j.ijbiomac.2019.08.129] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Revised: 08/10/2019] [Accepted: 08/14/2019] [Indexed: 02/05/2023]
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Wu D, Zheng J, Mao G, Hu W, Ye X, Linhardt RJ, Chen S. Rethinking the impact of RG-I mainly from fruits and vegetables on dietary health. Crit Rev Food Sci Nutr 2019; 60:2938-2960. [PMID: 31607142 DOI: 10.1080/10408398.2019.1672037] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Rhamnogalacturonan I (RG-I) pectin is composed of backbone of repeating disaccharide units →2)-α-L-Rhap-(1→4)-α-D-GalpA-(1→ and neutral sugar side-chains mainly consisting of arabinose and galactose having variable types of linkages. However, since traditional pectin extraction methods damages the RG-I structure, the characteristics and health effects of RG-I remains unclear. Recently, many studies have focused on RG-I, which is often more active than the homogalacturonan (HG) portion of pectic polysaccharides. In food products, RG-I is common to fruits and vegetables and possesses many health benefits. This timely and comprehensive review describes the many different facets of RG-I, including its dietary sources, history, metabolism and potential functionalities, all of which have been compiled to establish a platform for taking full advantage of the functional value of RG-I pectin.
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Affiliation(s)
- Dongmei Wu
- College of Biosystems Engineering and Food Science, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, Fuli Institute of Food Science, Ningbo Research Institute, Zhejiang Engineering Laboratory of Food Technology and Equipment, Zhejiang University, Hangzhou, China
| | - Jiaqi Zheng
- College of Biosystems Engineering and Food Science, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, Fuli Institute of Food Science, Ningbo Research Institute, Zhejiang Engineering Laboratory of Food Technology and Equipment, Zhejiang University, Hangzhou, China
| | - Guizhu Mao
- College of Biosystems Engineering and Food Science, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, Fuli Institute of Food Science, Ningbo Research Institute, Zhejiang Engineering Laboratory of Food Technology and Equipment, Zhejiang University, Hangzhou, China
| | - Weiwei Hu
- College of Biosystems Engineering and Food Science, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, Fuli Institute of Food Science, Ningbo Research Institute, Zhejiang Engineering Laboratory of Food Technology and Equipment, Zhejiang University, Hangzhou, China
| | - Xingqian Ye
- College of Biosystems Engineering and Food Science, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, Fuli Institute of Food Science, Ningbo Research Institute, Zhejiang Engineering Laboratory of Food Technology and Equipment, Zhejiang University, Hangzhou, China
| | - Robert J Linhardt
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York, USA
| | - Shiguo Chen
- College of Biosystems Engineering and Food Science, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, Fuli Institute of Food Science, Ningbo Research Institute, Zhejiang Engineering Laboratory of Food Technology and Equipment, Zhejiang University, Hangzhou, China
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Durazzo A, Lucarini M, Novellino E, Souto EB, Daliu P, Santini A. Abelmoschus esculentus (L.): Bioactive Components' Beneficial Properties-Focused on Antidiabetic Role-For Sustainable Health Applications. Molecules 2018; 24:molecules24010038. [PMID: 30583476 PMCID: PMC6337517 DOI: 10.3390/molecules24010038] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Revised: 12/17/2018] [Accepted: 12/19/2018] [Indexed: 01/07/2023] Open
Abstract
The main features of the okra, Abelmoschus esculentus (L.), are highlighted. The evaluation of interactions between biologically active compounds and other components of the food matrix can be considered as the first action in the investigation of potential benefits of this annual herb. Moreover, updated examples of current and innovative directions in an integrated and multidisciplinary approach are discussed, with particular attention to chemometrics. Among the main effects attributed to okra, its antidiabetic property is the focus. Finally, the use of okra in different fields will be discussed.
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Affiliation(s)
- Alessandra Durazzo
- CREA-Research Centre for Food and Nutrition, Via Ardeatina 546, 00178 Rome, Italy.
| | - Massimo Lucarini
- CREA-Research Centre for Food and Nutrition, Via Ardeatina 546, 00178 Rome, Italy.
| | - Ettore Novellino
- Department of Pharmacy, University of Napoli Federico II, Via D. Montesano 49, 80131 Napoli, Italy.
| | - Eliana B Souto
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Coimbra, Coimbra, Portugal.
- CEB-Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal.
| | - Patricia Daliu
- Department of Pharmacy, University of Napoli Federico II, Via D. Montesano 49, 80131 Napoli, Italy.
| | - Antonello Santini
- Department of Pharmacy, University of Napoli Federico II, Via D. Montesano 49, 80131 Napoli, Italy.
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34
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Islam MT. Phytochemical information and pharmacological activities of Okra (
Abelmoschus esculentus
): A literature‐based review. Phytother Res 2018; 33:72-80. [DOI: 10.1002/ptr.6212] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Revised: 08/19/2018] [Accepted: 09/21/2018] [Indexed: 12/11/2022]
Affiliation(s)
- Muhammad Torequl Islam
- Department for Management of Science and Technology Development Ton Duc Thang University Ho Chi Minh City Vietnam
- Faculty of Pharmacy Ton Duc Thang University Ho Chi Minh City Vietnam
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Crude Polysaccharides from Okra Pods ( Abelmoschus esculentus) Grown in Indonesia Enhance the Immune Response due to Bacterial Infection. Adv Pharmacol Sci 2018; 2018:8505383. [PMID: 30402093 PMCID: PMC6198543 DOI: 10.1155/2018/8505383] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Revised: 08/24/2018] [Accepted: 09/19/2018] [Indexed: 11/17/2022] Open
Abstract
Okra pods were widely consumed by Indonesians to maintain health. The aim of this study was at investigating the potential of crude polysaccharides from okra pods on immune response in mice infected with Staphylococcus aureus. Thirty male Balb/C mice were divided into six groups: normal control, negative control, and treatment groups (administration of crude polysaccharides at doses of 25, 50, 75, and 100 mg/kg). Crude polysaccharides were administrated for fourteen days. Furthermore, mice were exposed to S. aureus at the fifteenth day. Two weeks after the end of treatment, the parameters were measured. This study showed that crude polysaccharides at a dose of 75 and 100 mg/kg improved phagocytic activity, spleen index, and splenocytes proliferation. Rising of TNF-α levels was shown in groups treated with crude polysaccharides at doses of 25, 50, and 100 mg/kg. All treatment groups showed a decreasing level of IL-17. Crude okra polysaccharides also showed a slight increase in NK cells activity and IFN-γ level. Thus, crude okra polysaccharides could act as an effective material to enhance immune response including phagocytic activity, spleen index, splenocytes proliferation, and control immune responses through cytokine production.
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Wang K, Li M, Wen X, Chen X, He Z, Ni Y. Optimization of ultrasound-assisted extraction of okra (Abelmoschus esculentus (L.) Moench) polysaccharides based on response surface methodology and antioxidant activity. Int J Biol Macromol 2018; 114:1056-1063. [PMID: 29625219 DOI: 10.1016/j.ijbiomac.2018.03.145] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Revised: 01/26/2018] [Accepted: 03/23/2018] [Indexed: 02/09/2023]
Abstract
This study determined the optimal conditions for ultrasound-assisted extraction of a water-soluble polysaccharide, Raw Okra Polysaccharide, from the fruit of okra using response surface methodology. The optimal extraction temperature, extraction time and ultrasonic power were 59°C, 30min and 522W, respectively, giving a yield of 10.35±0.11%. ROP was further isolated, lyophilized and purified using a DEAE-Sepharose Fast Flow column and Sepharose CL-6B column, revealing three elution peaks subsequently designated ROP -1, -2, and -3, respectively. Of these, ROP-2 showed the highest yield, and was therefore selected for physicochemical analysis and evaluation of antioxidant activity. Gas chromatography, fourier transform infrared spectroscopy, and high-performance liquid chromatography were used to characterize the primary structural features and molecular weight, revealing that ROP-2 is composed of glucose, mannose, galactose, arabinose, xylose, fructose, and rhamnose (molar percentages: 28.8, 12.5, 13.1, 15.9, 9.2, 13.7, and 6.8%, respectively) and has an average molecular weight of 1.92×105Da. A superoxide radical scavenging assay and DPPH radical scavenging assay further revealed the significant in vitro antioxidant activity of ROP-2. These findings present an effective technique for extraction of the natural antioxidant ROP-2, warranting further analysis of its potential application in the food industry.
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Affiliation(s)
- Kunli Wang
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; National Engineering Research Center for Fruits and Vegetables Processing, Beijing 100083, China; Key Laboratory of Fruits and Vegetables Processing, Ministry of Agriculture, Beijing 100083, China
| | - Mo Li
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; National Engineering Research Center for Fruits and Vegetables Processing, Beijing 100083, China; Key Laboratory of Fruits and Vegetables Processing, Ministry of Agriculture, Beijing 100083, China
| | - Xin Wen
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; National Engineering Research Center for Fruits and Vegetables Processing, Beijing 100083, China; Key Laboratory of Fruits and Vegetables Processing, Ministry of Agriculture, Beijing 100083, China
| | - Xiaosong Chen
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; National Engineering Research Center for Fruits and Vegetables Processing, Beijing 100083, China; Key Laboratory of Fruits and Vegetables Processing, Ministry of Agriculture, Beijing 100083, China
| | - Zhengyu He
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; National Engineering Research Center for Fruits and Vegetables Processing, Beijing 100083, China; Key Laboratory of Fruits and Vegetables Processing, Ministry of Agriculture, Beijing 100083, China
| | - Yuanying Ni
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; National Engineering Research Center for Fruits and Vegetables Processing, Beijing 100083, China; Key Laboratory of Fruits and Vegetables Processing, Ministry of Agriculture, Beijing 100083, China.
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Liu J, Zhao Y, Wu Q, John A, Jiang Y, Yang J, Liu H, Yang B. Structure characterisation of polysaccharides in vegetable “okra” and evaluation of hypoglycemic activity. Food Chem 2018; 242:211-216. [DOI: 10.1016/j.foodchem.2017.09.051] [Citation(s) in RCA: 105] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Revised: 09/07/2017] [Accepted: 09/11/2017] [Indexed: 12/17/2022]
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38
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De Novo Transcriptome Assembly and Characterization of the Synthesis Genes of Bioactive Constituents in Abelmoschus esculentus (L.) Moench. Genes (Basel) 2018; 9:genes9030130. [PMID: 29495525 PMCID: PMC5867851 DOI: 10.3390/genes9030130] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2018] [Revised: 02/15/2018] [Accepted: 02/19/2018] [Indexed: 12/11/2022] Open
Abstract
Abelmoschus esculentus (okra or lady's fingers) is a vegetable with high nutritional value, as well as having certain medicinal effects. It is widely used as food, in the food industry, and in herbal medicinal products, but also as an ornamental, in animal feed, and in other commercial sectors. Okra is rich in bioactive compounds, such as flavonoids, polysaccharides, polyphenols, caffeine, and pectin. In the present study, the concentrations of total flavonoids and polysaccharides in five organs of okra were determined and compared. Transcriptome sequencing was used to explore the biosynthesis pathways associated with the active constituents in okra. Transcriptome sequencing of five organs (roots, stem, leaves, flowers, and fruits) of okra enabled us to obtain 293,971 unigenes, of which 232,490 were annotated. Unigenes related to the enzymes involved in the flavonoid biosynthetic pathway or in fructose and mannose metabolism were identified, based on Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis. All of the transcriptional datasets were uploaded to Sequence Read Archive (SRA). In summary, our comprehensive analysis provides important information at the molecular level about the flavonoid and polysaccharide biosynthesis pathways in okra.
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Zhang A, Wang D, Li J, Gao F, Fan X. The effect of aqueous extract of Xinjiang Artemisia rupestris L. (an influenza virus vaccine adjuvant) on enhancing immune responses and reducing antigen dose required for immunity. PLoS One 2017; 12:e0183720. [PMID: 28841693 PMCID: PMC5571932 DOI: 10.1371/journal.pone.0183720] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Accepted: 08/09/2017] [Indexed: 11/18/2022] Open
Abstract
Potent adjuvant can improve the effectiveness of vaccines and reduce the antigen doses required for initiating the protective immunity. In this study, we identified that aqueous extract of Artemisia rupestris L. (AEAR) could be employed as an efficient adjuvant for influenza virus vaccine (V) to enhance immune responses and reduce the antigen doses required for initiating immunity, without compromising the immune response. ICR mice were subcutaneously co-administrated with V combined with different concentrations of AEAR demonstrated that 300 μg AEAR could significantly improve hemagglutination inhibition (HI) and increase IgG antibody titers in serum (P<0.05) and the population of CD4+CD44+ and CD8+CD44+ (P<0.05). Next, 300 μg AEAR combined with different doses of V in vivo markedly increased HI and specific IgG antibody level(P<0.05). It also significantly increased the amount of CD4+ and CD8+ T cells, CD4+CD44+ and CD8+CD44+ T cells (P<0.05), improved lymphocyte proliferation, the secretion of CD4+IL-4, CD4+IFN-γ and CD8+IFN-γ (P<0.05), and the killing efficacy of cytotoxic T lymphocyte (CTL) (P<0.05). Furthermore, the combination increased the expression of major histocompatibility complex-II (MHC-II) and co-stimulatory molecules including CD40, CD80, and CD86 on dendritic cells (DCs), and downregulated the expression of CD25+Foxp3+Treg cells (P<0.05). No significant difference was observed between high-dose V and low-dose AEAR-V (10-fold lower) vaccination group (P>0.05), indicating a 10-fold reduction of antigen required for V vaccine administration. In conclusion, this study demonstrated that AEAR, as an adjuvant for influenza vaccine, could stimulate potent humoral and cellular immune responses and reduce the antigen dose required for effective vaccination, which were mediated by promoting DCs activation and repressing Treg expression.
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Affiliation(s)
- Ailian Zhang
- Xinjiang Key Laboratory of Biological Resources and Genetic Engineering, College of Life Science and Technology, Xinjiang University, Urumqi, China
- * E-mail:
| | - Danyang Wang
- Xinjiang Key Laboratory of Biological Resources and Genetic Engineering, College of Life Science and Technology, Xinjiang University, Urumqi, China
| | - Jinyao Li
- Xinjiang Key Laboratory of Biological Resources and Genetic Engineering, College of Life Science and Technology, Xinjiang University, Urumqi, China
| | - Feng Gao
- Urumqi Center for Disease Control and Prevention, Urumqi, China
| | - Xucheng Fan
- Urumqi Center for Disease Control and Prevention, Urumqi, China
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40
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Li M, Yan YX, Yu QT, Deng Y, Wu DT, Wang Y, Ge YZ, Li SP, Zhao J. Comparison of Immunomodulatory Effects of Fresh Garlic and Black Garlic Polysaccharides on RAW 264.7 Macrophages. J Food Sci 2017; 82:765-771. [DOI: 10.1111/1750-3841.13589] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2016] [Revised: 11/09/2016] [Accepted: 11/30/2016] [Indexed: 11/27/2022]
Affiliation(s)
- Min Li
- State Key Laboratory of Quality Research in Chinese Medicine and Inst. of Chinese Medical Sciences; Univ. of Macau, Avenida da Universidade; Taipa Macao SAR China
| | - Yi-Xi Yan
- State Key Laboratory of Quality Research in Chinese Medicine and Inst. of Chinese Medical Sciences; Univ. of Macau, Avenida da Universidade; Taipa Macao SAR China
| | - Qing-Tao Yu
- Research & Development Centre; Infinitus (China) Company Ltd.; Guangzhou 510665 China
| | - Yong Deng
- State Key Laboratory of Quality Research in Chinese Medicine and Inst. of Chinese Medical Sciences; Univ. of Macau, Avenida da Universidade; Taipa Macao SAR China
| | - Ding-Tao Wu
- State Key Laboratory of Quality Research in Chinese Medicine and Inst. of Chinese Medical Sciences; Univ. of Macau, Avenida da Universidade; Taipa Macao SAR China
| | - Ying Wang
- State Key Laboratory of Quality Research in Chinese Medicine and Inst. of Chinese Medical Sciences; Univ. of Macau, Avenida da Universidade; Taipa Macao SAR China
| | - Ya-Zhong Ge
- Research & Development Centre; Infinitus (China) Company Ltd.; Guangzhou 510665 China
| | - Shao-Ping Li
- State Key Laboratory of Quality Research in Chinese Medicine and Inst. of Chinese Medical Sciences; Univ. of Macau, Avenida da Universidade; Taipa Macao SAR China
| | - Jing Zhao
- State Key Laboratory of Quality Research in Chinese Medicine and Inst. of Chinese Medical Sciences; Univ. of Macau, Avenida da Universidade; Taipa Macao SAR China
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