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Du Y, Tian L, Wang Y, Li Z, Xu Z. Chemodiversity, pharmacological activity, and biosynthesis of specialized metabolites from medicinal model fungi Ganoderma lucidum. Chin Med 2024; 19:51. [PMID: 38519991 PMCID: PMC10958966 DOI: 10.1186/s13020-024-00922-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Accepted: 03/12/2024] [Indexed: 03/25/2024] Open
Abstract
Ganoderma lucidum is a precious fungus, particularly valued for its dual use as both medicine and food. Ganoderic acids (GAs), the distinctive triterpenoids found in the Ganoderma genus, exhibit a wide range of pharmacological activities. However, the limited resources of GAs restrict their clinic usage and drug discovery. In this review, we presented a comprehensive summary focusing on the diverse structures and pharmacological activity of GAs in G. lucidum. Additionally, we discussed the latest advancements in the elucidation of GA biosynthesis, as well as the progress in heterosynthesis and liquid fermentation methods aimed at further increasing GA production. Furthermore, we summarized the omics data, genetic transformation system, and cultivation techniques of G. lucidum, described as medicinal model fungi. The understanding of Ganoderic acids chemodiversity and biosynthesis in medicinal model fungi Ganoderma lucidum will provide important insights into the exploration and utilization of natural products in medicinal fungi.
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Affiliation(s)
- Yupeng Du
- Key Laboratory of Saline-Alkali Vegetation Ecology Restoration (Northeast Forestry University), Ministry of Education, Harbin, 150040, China
- College of Life Science, Northeast Forestry University, Harbin, 150040, China
| | - Lixia Tian
- School of Pharmaceutical Sciences, Guizhou University, Guiyang, 550025, China
| | - Yu Wang
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100193, China.
| | - Zhenhao Li
- ShouXianGu Botanical Drug Institute, Hangzhou, 311100, China.
| | - Zhichao Xu
- Key Laboratory of Saline-Alkali Vegetation Ecology Restoration (Northeast Forestry University), Ministry of Education, Harbin, 150040, China.
- College of Life Science, Northeast Forestry University, Harbin, 150040, China.
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Luo H, Li Y. Downstream Processing of Medicinal Mushroom Products. ADVANCES IN BIOCHEMICAL ENGINEERING/BIOTECHNOLOGY 2023; 184:187-218. [PMID: 35192002 DOI: 10.1007/10_2021_187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Medicinal mushrooms are higher fungi that consist of ascomycetes, basidiomycetes, and imperfect fungi. They have been long used as tonic and traditional medicine in East Asia, Europe, and Africa. Contemporary pharmacological researches have revealed that they possess a wide spectrum of bioactivity due to their production of a variety of bioactive compounds. Some of them have entered into the market; some are ready for industrial trials and further commercialization, while others are in various stages of development. According to the purpose of usage, a variety of medicinal mushroom-based products have been developed, which could be roughly divided into three general categories, i.e., nutraceuticals/functional foods, nutriceuticals/dietary supplements, and pharmaceuticals. Accordingly, the downstream processing of medicinal mushroom products varies greatly. Indeed, a major characteristic of medicinal mushroom is the wide variety of secondary metabolites, due to which a broad spectrum of separation techniques must be employed. In this chapter we will present an overview of the achievements in downstream processing technology for medicinal mushroom products. Examples of separation of products such as bioactive high-molecular-weight products like polysaccharides and low-molecular-weight products like triterpenoids are given. The application of some special separation strategy, e.g., chemical reaction-assisted separation for tackling some analogs with similar physicochemical properties from medicinal mushroom, is also described.
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Affiliation(s)
- Haiyan Luo
- CAS Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China
| | - Yingbo Li
- CAS Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China.
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Xu J, Yue T, Yu X, Zhao P, Li T, Li N. Enhanced production of individual ganoderic acids by integrating Vitreoscilla haemoglobin expression and calcium ion induction in liquid static cultures of Ganoderma lingzhi. Microb Biotechnol 2019; 12:1180-1187. [PMID: 30821132 PMCID: PMC6801144 DOI: 10.1111/1751-7915.13381] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Revised: 01/18/2019] [Accepted: 02/04/2019] [Indexed: 11/30/2022] Open
Abstract
Ganoderic acids produced by Ganoderma exhibit anticancer and antimetastatic activities. A novel approach by combining Vitreoscilla haemoglobin (VHb) expression and calcium ion induction was developed to enhance ganoderic acid (GA) production in liquid static cultures of G. lingzhi. The maximum contents of GA-O, GA-S and GA-Me were 1451.33 ± 67.50, 1431.23 ± 79.74 and 1283.81 ± 85.13 μg per 100 mg cell weight, respectively under the integrated approach, which are the highest contents as ever reported in Ganoderma. The contents of squalene and lanosterol were increased by 2.0- and 3.0-fold in this case compared with those in the control. The transcription levels of 3-hydroxy-3-methylglutaryl coenzyme A reductase, farnesyl-diphosphate synthase, squalene synthase and cytochrome P450 CYP5150L8 were upregulated by 2.56-, 3.31-, 2.59- and 6.12-fold respectively. Additionally, the expression of VHb improved the ratio of type I to type II GA in liquid static cultivation of G. lingzhi. The transcription levels of cyp512a2, cyp512v2 and cyp512a13, candidate cytochrome P450 genes involved in oxidative modification of the lanostane skeleton in GA biosynthesis, were also increased by 2.28-, 2.65- and 3.54-fold in the VHb-expressing strain respectively. Our results illustrated that the approach described here efficiently improved GA production in G. lingzhi fermentation.
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Affiliation(s)
- Jun‐Wei Xu
- Faculty of Life Science and TechnologyKunming University of Science and TechnologyKunming650500China
| | - Tong‐Hui Yue
- Faculty of Life Science and TechnologyKunming University of Science and TechnologyKunming650500China
| | - Xuya Yu
- Faculty of Life Science and TechnologyKunming University of Science and TechnologyKunming650500China
| | - Peng Zhao
- Faculty of Life Science and TechnologyKunming University of Science and TechnologyKunming650500China
| | - Tao Li
- Faculty of Life Science and TechnologyKunming University of Science and TechnologyKunming650500China
| | - Na Li
- Faculty of ScienceKunming University of Science and TechnologyKunming650500China
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He H, Yao G, Ma Y, Feng N, Zhou S, Huang Q. Experimental and Theoretical Study of the Raman Spectra of Ganoderic Acid T. J STRUCT CHEM+ 2019. [DOI: 10.1134/s0022476619090051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Ren A, Shi L, Zhu J, Yu H, Jiang A, Zheng H, Zhao M. Shedding light on the mechanisms underlying the environmental regulation of secondary metabolite ganoderic acid in Ganoderma lucidum using physiological and genetic methods. Fungal Genet Biol 2019; 128:43-48. [PMID: 30951869 DOI: 10.1016/j.fgb.2019.03.009] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Revised: 03/13/2019] [Accepted: 03/31/2019] [Indexed: 12/23/2022]
Abstract
The secondary metabolites of fungi are often produced at very low concentrations, and until recently the regulatory mechanisms of secondary metabolite biosynthesis have been unclear. Ganoderma lucidum is a macrofungus that is widely used as a traditional Chinese medicine or medicinal mushroom: ganoderic acid (GA) is one of the main active ingredients. Here, we review research from the last decade on which and how environmental factors regulate GA biosynthesis. These environmental factors are mainly three components: a single chemical/biological or biochemical signal, physical triggers, and nutritional conditions. Because G. lucidum is a non-model Basidiomycete, a combination of physiological and genetic research is needed to determine how those environmental factors regulate GA biosynthesis. The regulation of GA biosynthesis includes ROS, Ca2+, cAMP and phospholipid signaling, and cross-talk between different signaling pathways. The regulatory mechanisms for the synthesis of this secondary metabolite, from the perspective of physiology and genetics, in G. lucidum will provide ideas for studying the regulation of fungal secondary metabolism in other non-model species, especially those fungi with limitations in genetic manipulation.
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Affiliation(s)
- Ang Ren
- Department of Microbiology, College of Life Sciences, Nanjing Agricultural University, Key Laboratory of Microbiological Engineering of Agricultural Environment, Ministry of Agriculture, Nanjing 210095, Jiangsu, PR China
| | - Liang Shi
- Department of Microbiology, College of Life Sciences, Nanjing Agricultural University, Key Laboratory of Microbiological Engineering of Agricultural Environment, Ministry of Agriculture, Nanjing 210095, Jiangsu, PR China
| | - Jing Zhu
- Department of Microbiology, College of Life Sciences, Nanjing Agricultural University, Key Laboratory of Microbiological Engineering of Agricultural Environment, Ministry of Agriculture, Nanjing 210095, Jiangsu, PR China
| | - Hanshou Yu
- Department of Microbiology, College of Life Sciences, Nanjing Agricultural University, Key Laboratory of Microbiological Engineering of Agricultural Environment, Ministry of Agriculture, Nanjing 210095, Jiangsu, PR China
| | - Ailiang Jiang
- Department of Microbiology, College of Life Sciences, Nanjing Agricultural University, Key Laboratory of Microbiological Engineering of Agricultural Environment, Ministry of Agriculture, Nanjing 210095, Jiangsu, PR China
| | - Huihua Zheng
- Jiangsu Alphay Bio-technology Co., Ltd./Key Laboratory of Edible Mushroom Processing, Ministry of Agriculture, Nantong 226009, Jiangsu, PR China
| | - Mingwen Zhao
- Department of Microbiology, College of Life Sciences, Nanjing Agricultural University, Key Laboratory of Microbiological Engineering of Agricultural Environment, Ministry of Agriculture, Nanjing 210095, Jiangsu, PR China.
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Feng N, Wei Y, Feng J, Tang Q, Zhang Z, Zhang J, Han W. Preparative isolation of ganoderic acid S, ganoderic acid T and ganoderol B from Ganoderma lucidum mycelia by high-speed counter-current chromatography. Biomed Chromatogr 2018; 32:e4283. [PMID: 29748985 DOI: 10.1002/bmc.4283] [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: 12/27/2017] [Revised: 04/18/2018] [Accepted: 04/26/2018] [Indexed: 11/11/2022]
Abstract
Ganoderic acid S, ganoderic acid T and ganoderal B are the main bioactive triterpenes of Ganoderma lucidum. In this study, mycelia of G. lucidum were obtained by two-stage fermentation and then extracted by ethanol and petroleum ether sequentially to obtain crude triterpenes. The crude sample was further purified by recycling high-speed counter-current chromatography with n-hexane-ethyl acetate-methanol-water (7:12:11:5, v/v/v/v) as the optimized two-phase solvent system. A 16.4 mg aliquot of ganoderol B with a purity of 90.4% was separated from 300 mg of the crude sample in a single run. After employing the recycling elution mode of HSCCC with n-hexane-ethyl acetate-methanol-water (6:10:8:4.5, v/v/v/v) for five cycles, 25.7 mg ganoderic acid T and 3.7 mg ganoderic acid S with purities of 97.8 and 83.0%, respectively, were obtained. The purities of three compounds were determined by high-performance liquid chromatography and their chemical structures were identified by NMR and MS data.
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Affiliation(s)
- Na Feng
- Ministry of Agriculture, People's Republic of China, National Engineering Research Center of Edible Fungi and National R&D Center for Edible Fungi Processing, Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences; Key Laboratory of Edible Fungi Resources and Utilization (South), Shanghai, China
| | - Yutian Wei
- School of Pharmacy, East China University of Science and Technology, Shanghai, China
| | - Jie Feng
- Ministry of Agriculture, People's Republic of China, National Engineering Research Center of Edible Fungi and National R&D Center for Edible Fungi Processing, Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences; Key Laboratory of Edible Fungi Resources and Utilization (South), Shanghai, China
| | - Qingjiu Tang
- Ministry of Agriculture, People's Republic of China, National Engineering Research Center of Edible Fungi and National R&D Center for Edible Fungi Processing, Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences; Key Laboratory of Edible Fungi Resources and Utilization (South), Shanghai, China
| | - Zhong Zhang
- Ministry of Agriculture, People's Republic of China, National Engineering Research Center of Edible Fungi and National R&D Center for Edible Fungi Processing, Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences; Key Laboratory of Edible Fungi Resources and Utilization (South), Shanghai, China
| | - Jingsong Zhang
- Ministry of Agriculture, People's Republic of China, National Engineering Research Center of Edible Fungi and National R&D Center for Edible Fungi Processing, Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences; Key Laboratory of Edible Fungi Resources and Utilization (South), Shanghai, China
| | - Wei Han
- School of Pharmacy, East China University of Science and Technology, Shanghai, China
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Liu C, Jiao R, Yao L, Zhang Y, Lu Y, Tan R. Adsorption characteristics and preparative separation of chaetominine from Aspergillus fumigatus mycelia by macroporous resin. J Chromatogr B Analyt Technol Biomed Life Sci 2016; 1015-1016:135-141. [DOI: 10.1016/j.jchromb.2016.02.027] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2015] [Revised: 02/17/2016] [Accepted: 02/17/2016] [Indexed: 11/28/2022]
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Further improvement in ganoderic acid production in static liquid culture of Ganoderma lucidum by integrating nitrogen limitation and calcium ion addition. Bioprocess Biosyst Eng 2015; 39:75-80. [DOI: 10.1007/s00449-015-1491-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2015] [Accepted: 10/14/2015] [Indexed: 12/26/2022]
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Bishop KS, Kao CHJ, Xu Y, Glucina MP, Paterson RRM, Ferguson LR. From 2000years of Ganoderma lucidum to recent developments in nutraceuticals. PHYTOCHEMISTRY 2015; 114:56-65. [PMID: 25794896 DOI: 10.1016/j.phytochem.2015.02.015] [Citation(s) in RCA: 187] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2014] [Revised: 02/11/2015] [Accepted: 02/17/2015] [Indexed: 05/21/2023]
Abstract
Medicinal mushrooms have been used for centuries as nutraceuticals to improve health and to treat numerous chronic and infectious diseases. One such mushroom is Ganoderma lucidum, commonly known as Lingzhi, a species revered as a medicinal mushroom for treating assorted diseases and prolonging life. The fungus is found in diverse locations, and this may have contributed to confusion regarding the correct taxonomic classification of the genus Ganoderma. G. lucidum was first used to name a specimen found in England and thereafter was naively applied to a different Ganoderma species found in Asia, commonly known as Chinese Lingzhi. Despite the taxonomic confusion, which has largely been uncorrected, the popularity of Lingzhi has escalated across the globe. The current taxonomic situation is now discussed accurately in this Special Issue on Ganoderma. Today it is a multi-billion dollar industry wherein Lingzhi is cultivated or collected from the wild and consumed as a tea, in alcoholic beverages, and as a nutraceutical to confer numerous health benefits. Consumption of nutraceuticals has grown in popularity, and it is becoming increasingly important that active ingredients be identified and that suppliers make substantiated health claims about their products. The objective of this article is to present a review of G. lucidum over the past 2000 years from prized ancient "herbal" remedy to its use in nutraceuticals and to the establishment of a 2.5 billion $ (US) industry.
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Affiliation(s)
- Karen S Bishop
- Auckland Cancer Society Research Centre, Faculty of Medical and Health Sciences, The University of Auckland, Private Bag 92019, Auckland 1142, New Zealand.
| | - Chi H J Kao
- Discipline of Nutrition, Faculty of Medical and Health Sciences, The University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
| | - Yuanye Xu
- Discipline of Nutrition, Faculty of Medical and Health Sciences, The University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
| | | | - R Russell M Paterson
- IBB-Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - Lynnette R Ferguson
- Auckland Cancer Society Research Centre, Faculty of Medical and Health Sciences, The University of Auckland, Private Bag 92019, Auckland 1142, New Zealand; Discipline of Nutrition, Faculty of Medical and Health Sciences, The University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
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Xu YN, Xia XX, Zhong JJ. Induction of ganoderic acid biosynthesis by Mn2+ in static liquid cultivation of Ganoderma lucidum. Biotechnol Bioeng 2014; 111:2358-65. [PMID: 24870062 DOI: 10.1002/bit.25288] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2014] [Revised: 05/05/2014] [Accepted: 05/06/2014] [Indexed: 11/07/2022]
Abstract
Metal ions affect cell physiology and metabolism significantly, but the role of Mn(2+) in the secondary metabolism of mushrooms is yet unclear. In static liquid cultivation of Ganoderma lucidum for producing antitumor ganoderic acids (GAs), the Mn(2+) addition was performed. Addition of 10 mM Mn(2+) at the start of the static liquid cultivation resulted in 2.2-fold improvement of total GAs production. The expression levels of GA biosynthetic and Ca(2+) sensors' genes were up-regulated with Mn(2+) induction while down-regulated by adding cyclosporin A (calcineurin inhibitor), suggesting that higher GA production might result from calcineurin signal regulation. Intracellular Ca(2+) imaging and calcineurin inhibitor study revealed that addition of Mn(2+) led to Ca(2+) influx from medium to the cells to trigger calcineurin signals. Mn(2+) addition was therefore an efficient induction strategy for improving GAs production, whose regulation mechanism was via calcineurin signaling transduction.
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Affiliation(s)
- Yi-Ning Xu
- State Key Laboratory of Microbial Metabolism and Laboratory of Molecular Biochemical Engineering, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, 800 Dong-Chuan Road, Shanghai, 200240, China
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Qu D, He J, Liu C, Zhou J, Chen Y. Triterpene-loaded microemulsion using Coix lacryma-jobi seed extract as oil phase for enhanced antitumor efficacy: preparation and in vivo evaluation. Int J Nanomedicine 2013; 9:109-19. [PMID: 24379669 PMCID: PMC3872217 DOI: 10.2147/ijn.s54796] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
Ganoderma lucidum triterpene-loaded microemulsions (TMEs) using Coix lacryma-jobi (adlay) seed oil as oil phase were prepared, characterized, and evaluated for enhanced antitumor activity. Ternary phase diagrams for the TMEs were constructed and the optimal preparation was developed. Transmission electron microscopy and dynamic light scattering showed that this formulation had a well defined spherical shape, a homogeneous distribution, a small size, and a narrow polydispersity index. The drug-loading rate was determined to be 9.87% by ultraviolet spectrophotometry, and acceptable stability under various stimulations in vitro was confirmed. Importantly, the TME formulation showed a significantly greater antiproliferative effect towards human lung carcinoma (A549) cells and murine lung tumor (Lewis) cells in comparison with suspension formulations containing triterpene and adlay seed oil as a positive control. The half-maximal inhibitory concentration of the TMEs was about 0.62 mg crude drug per mL, being 2.5-fold improved relative to that of the corresponding suspension formulation, but no significant cytotoxicity was observed for the bare microemulsion in A549 cells and Lewis cells. In vivo, the TME formulation showed markedly enhanced antitumor efficacy in a xenograft model of Lewis lung cancer after intragastric administration. Compared with cyclophosphamide, the TME formulation showed similar antitumor activity but less general toxicity. These results indicate the feasibility of using a microemulsion to increase the solubility of triterpene and adlay. TMEs hold promise as an efficient drug delivery system for the treatment of lung cancer.
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Affiliation(s)
- Ding Qu
- Key Laboratory of New Drug Delivery System of Chinese Materia Medica, Jiangsu Provincial Academy of Chinese Medicine, Jiangsu, People's Republic of China
| | - Junjie He
- Key Laboratory of New Drug Delivery System of Chinese Materia Medica, Jiangsu Provincial Academy of Chinese Medicine, Jiangsu, People's Republic of China
| | - Congyan Liu
- Key Laboratory of New Drug Delivery System of Chinese Materia Medica, Jiangsu Provincial Academy of Chinese Medicine, Jiangsu, People's Republic of China
| | - Jing Zhou
- Key Laboratory of New Drug Delivery System of Chinese Materia Medica, Jiangsu Provincial Academy of Chinese Medicine, Jiangsu, People's Republic of China
| | - Yan Chen
- Key Laboratory of New Drug Delivery System of Chinese Materia Medica, Jiangsu Provincial Academy of Chinese Medicine, Jiangsu, People's Republic of China
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Zhang WX, Zhong JJ. Oxygen limitation improves ganoderic acid biosynthesis in submerged cultivation of Ganoderma lucidum. BIOTECHNOL BIOPROC E 2013. [DOI: 10.1007/s12257-013-0148-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Xu YN, Xia XX, Zhong JJ. Induced effect of Na+on ganoderic acid biosynthesis in static liquid culture ofGanoderma lucidumvia calcineurin signal transduction. Biotechnol Bioeng 2013; 110:1913-23. [DOI: 10.1002/bit.24852] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2012] [Revised: 01/11/2013] [Accepted: 01/14/2013] [Indexed: 11/08/2022]
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Li YB, Wang JL, Zhong JJ. Enhanced recovery of four antitumor ganoderic acids from Ganoderma lucidum mycelia by a novel process of simultaneous extraction and hydrolysis. Process Biochem 2013. [DOI: 10.1016/j.procbio.2012.12.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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