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Tee PYE, Krishnan T, Cheong XT, Maniam SAP, Looi CY, Ooi YY, Chua CLL, Fung SY, Chia AYY. A review on the cultivation, bioactive compounds, health-promoting factors and clinical trials of medicinal mushrooms Taiwanofungus camphoratus, Inonotus obliquus and Tropicoporus linteus. Fungal Biol Biotechnol 2024; 11:7. [PMID: 38987829 PMCID: PMC11238383 DOI: 10.1186/s40694-024-00176-3] [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: 04/10/2024] [Accepted: 06/09/2024] [Indexed: 07/12/2024] Open
Abstract
Medicinal mushrooms, such as Taiwanofungus camphoratus, Inonotus obliquus, and Tropicoporus linteus, have been used in traditional medicine for therapeutic purposes and promotion of overall health in China and many East Asian countries for centuries. Modern pharmacological studies have demonstrated the large amounts of bioactive constituents (such as polysaccharides, triterpenoids, and phenolic compounds) available in these medicinal mushrooms and their potential therapeutic properties. Due to the rising demand for the health-promoting medicinal mushrooms, various cultivation methods have been explored to combat over-harvesting of the fungi. Evidence of the robust pharmacological properties, including their anticancer, hypoglycemic, hypolipidemic, antioxidant, and antiviral activities, have been provided in various studies, where the health-benefiting properties of the medicinal fungi have been further proven through numerous clinical trials. In this review, the cultivation methods, available bioactive constituents, therapeutic properties, and potential uses of T. camphoratus, I. obliquus and T. linteus are explored.
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Affiliation(s)
- Phoebe Yon Ern Tee
- School of Biosciences, Faculty of Health and Medical Sciences, Taylor's University, 47500, Selangor, Malaysia
| | - Thiiben Krishnan
- School of Biosciences, Faculty of Health and Medical Sciences, Taylor's University, 47500, Selangor, Malaysia
| | - Xin Tian Cheong
- School of Biosciences, Faculty of Health and Medical Sciences, Taylor's University, 47500, Selangor, Malaysia
| | - Snechaa A P Maniam
- School of Biosciences, Faculty of Health and Medical Sciences, Taylor's University, 47500, Selangor, Malaysia
| | - Chung Yeng Looi
- School of Biosciences, Faculty of Health and Medical Sciences, Taylor's University, 47500, Selangor, Malaysia
| | - Yin Yin Ooi
- School of Biosciences, Faculty of Health and Medical Sciences, Taylor's University, 47500, Selangor, Malaysia
| | - Caroline Lin Lin Chua
- School of Biosciences, Faculty of Health and Medical Sciences, Taylor's University, 47500, Selangor, Malaysia
| | - Shin-Yee Fung
- Department of Molecular Medicine, Faculty of Medicine Building, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Adeline Yoke Yin Chia
- School of Biosciences, Faculty of Health and Medical Sciences, Taylor's University, 47500, Selangor, Malaysia.
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Ern PTY, Quan TY, Yee FS, Yin ACY. Therapeutic properties of Inonotus obliquus (Chaga mushroom): A review. Mycology 2023; 15:144-161. [PMID: 38813471 PMCID: PMC11132974 DOI: 10.1080/21501203.2023.2260408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Accepted: 09/13/2023] [Indexed: 05/31/2024] Open
Abstract
Inonotus obliquus, also known as Chaga, is a medicinal mushroom that has been used for therapeutic purposes since the sixteenth century. Collections of folk medicine record the application of Chaga for the treatment of diseases such as gastrointestinal cancer, diabetes, bacterial infection, and liver diseases. Modern research provides scientific evidence of the therapeutic properties of I. obliquus extracts, including anti-inflammatory, antioxidant, anticancer, anti-diabetic, anti-obesity, hepatoprotective, renoprotective, anti-fatigue, antibacterial, and antiviral activities. Various bioactive compounds, including polysaccharides, triterpenoids, polyphenols, and lignin metabolites have been found to be responsible for the health-benefiting properties of I. obliquus. Furthermore, some studies have elucidated the underlying mechanisms of the mushroom's medicinal effects, revealing the compounds' interactions with enzymes or proteins of important pathways. Thus, this review aims to explore available information on the therapeutic potentials of Inonotus obliquus for the development of an effective naturally sourced treatment option.
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Affiliation(s)
- Phoebe Tee Yon Ern
- School of Biosciences, Faculty of Health & Medical Sciences, Taylor’s University, Subang Jaya, Selangor, Malaysia
| | - Tang Yin Quan
- School of Biosciences, Faculty of Health & Medical Sciences, Taylor’s University, Subang Jaya, Selangor, Malaysia
| | - Fung Shin Yee
- Department of Molecular Medicine, Faculty of Medicine Building, University of Malaya, Kuala Lumpur, Malaysia
| | - Adeline Chia Yoke Yin
- School of Biosciences, Faculty of Health & Medical Sciences, Taylor’s University, Subang Jaya, Selangor, Malaysia
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Lu Y, Jia Y, Xue Z, Li N, Liu J, Chen H. Recent Developments in Inonotus obliquus (Chaga mushroom) Polysaccharides: Isolation, Structural Characteristics, Biological Activities and Application. Polymers (Basel) 2021; 13:1441. [PMID: 33947037 PMCID: PMC8124789 DOI: 10.3390/polym13091441] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Revised: 04/23/2021] [Accepted: 04/27/2021] [Indexed: 12/16/2022] Open
Abstract
Inonotus obliquus (Chaga mushroom) is a kind of medicine and health food widely used by folk in China, Russia, Korea, and some occidental countries. Among the extracts from Inonotus obliquus, Inonotus obliquus polysaccharide (IOPS) is supposed to be one of the major bioactive components in Inonotus obliquus, which possesses antitumor, antioxidant, anti-virus, hypoglycemic, and hypolipidemic activities. In this review, the current advancements on extraction, purification, structural characteristics, and biological activities of IOPS were summarized. This review can provide significant insight into the IOPS bioactivities as their in vitro and in vivo data were summarized, and some possible mechanisms were listed. Furthermore, applications of IOPS were reviewed and discussed; IOPS might be a potential candidate for the treatment of cancers and type 2 diabetes. Besides, new perspectives for the future work of IOPS were also proposed.
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Affiliation(s)
| | | | | | | | | | - Haixia Chen
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China; (Y.L.); (Y.J.); (Z.X.); (N.L.); (J.L.)
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Zhao W, Huang P, Zhu Z, Chen C, Xu X. Production of phenolic compounds and antioxidant activity via bioconversion of wheat straw by Inonotus obliquus under submerged fermentation with the aid of a surfactant. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2021; 101:1021-1029. [PMID: 32761948 DOI: 10.1002/jsfa.10710] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 07/28/2020] [Accepted: 08/06/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND This study investigated the effect of surfactants on wheat straw biodegradation and the growth-associated generation of exo- and endo-phenolic compounds (EPC and IPC) and antioxidant activity expression by liquid-cultured Inonotus obliquus, an edible and medicinal mushroom, also known as a white rot fungus. Changes in the chemical composition and multiscale structure of wheat straw, in the production and activity of EPC and IPC and in individual flavonoids were analyzed. RESULTS Fungal pretreatment decreased significantly the contents of all lignocellulose components, increased and enlarged substrate porosity and caused changes in the structure of wheat straw with the aid of Triton X-100. A gradual increase in EPC and IPC production was observed up to 6.4- and 1.5-fold for 9 days. The EPC obtained on day 9 showed the highest antioxidant activity (IC50 of 30.96 mg L-1 ) against 2,2-diphenyl-1-picrylhydrazyl radicals. High-performance liquid chromatographic results indicated the presence of high amounts of epicatechin-3-gallate (ECG; (374.9 mg g-1 ) and epigallocatechin-3-gallate (EGCG; 447.2 mg g-1 ) in the EPC; other polyphenols were also enhanced but to a lesser extent. Surfactant supplementation was effective in enhancing flavonoid production and in increasing antioxidant activity in EPC. CONCLUSIONS The results indicated enhanced accumulation of phenolic compounds, particularly ECG and EGCG in Inonotus obliquus via biodegradation and bioconversion of lignocellulose residues. They also indicated enhancement in the production of several flavonoids and also an increase in antioxidant activity in the product by a surfactant-treated process, which may be a useful way of exploiting underused lignocellulosic residues to various high-added-value functional ingredients. © 2020 Society of Chemical Industry.
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Affiliation(s)
- Wei Zhao
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, China
| | - Panpan Huang
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, China
| | - Zhenduo Zhu
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, China
| | - Cui Chen
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, China
| | - Xiangqun Xu
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, China
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Simultaneous Use of Stimulatory Agents to Enhance the Production and Hypoglycaemic Activity of Polysaccharides from Inonotus obliquus by Submerged Fermentation. Molecules 2019; 24:molecules24234400. [PMID: 31810277 PMCID: PMC6930551 DOI: 10.3390/molecules24234400] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Revised: 11/25/2019] [Accepted: 11/27/2019] [Indexed: 01/02/2023] Open
Abstract
This study aimed to determine the effect of applying stimulatory agents to liquid cultured Inonotus obliquus on the simultaneous accumulation of exo-polysaccharides (EPS) and their monosaccharide composition. Different stimulatory agents (VB6, VB1, betulin and birch extract) were investigated for their effects on active exo-polysaccharides by submerged fermentation of I. obliquus. The mycelial biomass, reducing sugar content, EPS yield and α-glucosidase inhibition rate were determined, and the EPS obtained was analyzed for monosaccharide composition. The results showed that the addition of all the four stimulatory agents could significantly increase the inhibitory activity against α-glucosidase of EPS than the control, whereas EPS from 4 μg/mL VB1-containing medium had the best effect with an estimated IC50 value 24.34 μg/mL. Among the four stimulatory agents, VB6 gave maximum production of mycelial biomass and EPS at the concentration of 4 μg/mL with a increase of 50.79% and 114.46%, respectively. In addition, betulin had a significant effect on increasing the EPS yield and activity, and birch extract had a significantly stimulatory effect on the mycelial growth and the polysaccharides activity, only slightly worse than VB6 and VB1. Moreover, the addition of different stimulatory agents changed the monosaccharide composition of polysaccharides, which had a correlation with polysaccharide activity.
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