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Li SN, Li XA, Zhang Q, Hu YJ, Lei HR, Guo DL, Jiang LS, Deng Y. Chemical constitutes from Tuber indicum with immunosuppressive activity uncovered by transcriptome analysis. Fitoterapia 2024; 173:105773. [PMID: 38097020 DOI: 10.1016/j.fitote.2023.105773] [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: 09/01/2023] [Revised: 12/05/2023] [Accepted: 12/05/2023] [Indexed: 01/15/2024]
Abstract
Three previously undescribed compounds including a polyketide (1) and two lactams (2 and 3) were obtained from Tuber indicum. The structures of new findings were elucidated by HRESIMS, NMR as well as NMR and ECD calculations. Transcriptome analysis through RNA-seq revealed that compound 2 exhibits immunosuppressive activity. Lipopolysaccharide (LPS)-stimulated RAW264.7 macrophages were employed as a model to explore the effect of these compounds in immunosuppressive activity. The results showed that 2 could reduce the generation of inflammatory mediators including nitric oxide (NO), reactive oxygen species (ROS), interleukin 6 (IL-6), tumor necrosis factor α (TNF-α), cyclooxygenase 2 (COX-2) and inducible nitric oxide synthase (iNOS). Western blotting analysis demonstrated that 2 could suppressed the PI3K pathway by decreasing the levels of p-PI3K and p-Akt, while increasing the levels of p-PTEN. The anti-inflammatory activity of 2 was further confirmed using a zebrafish in vivo model.
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Affiliation(s)
- Si-Ning Li
- State Key Laboratory of Southwestern Chinese Medicine Resource, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Xin-Ai Li
- State Key Laboratory of Southwestern Chinese Medicine Resource, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China; Ningxia Chinese Medicine Research Center, Yinchuan, China
| | - Qi Zhang
- State Key Laboratory of Southwestern Chinese Medicine Resource, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Yun-Jie Hu
- State Key Laboratory of Southwestern Chinese Medicine Resource, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Hao-Ran Lei
- State Key Laboratory of Southwestern Chinese Medicine Resource, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Da-Le Guo
- State Key Laboratory of Southwestern Chinese Medicine Resource, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Li-Shi Jiang
- State Key Laboratory of Southwestern Chinese Medicine Resource, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China; School of Public Health, Chengdu University of Traditional Chinese Medicine, Chengdu, China.
| | - Yun Deng
- State Key Laboratory of Southwestern Chinese Medicine Resource, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China.
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Antimicrobial Efficacy of Extracts of Saudi Arabian Desert Terfezia claveryi Truffles. Saudi J Biol Sci 2022; 29:103462. [PMID: 36267911 PMCID: PMC9576567 DOI: 10.1016/j.sjbs.2022.103462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2022] [Revised: 08/24/2022] [Accepted: 09/21/2022] [Indexed: 11/21/2022] Open
Abstract
Background Terfezia claveryi truffles are known for their nutritional value and have been considered among traditional treatments for ophthalmic infections and ailments. Objectives We sought to investigate the in vitro antimicrobial efficacy of several T. claveryi extracts from Saudi Arabia. Certain pathogenic fungi and gram-negative and gram-positive bacteria were included. Methods Dry extracts were prepared using methanol, ethyl acetate, and distilled water, while the latter was used for preparing fresh extracts. The extracts were microbiologically evaluated through the disc-diffusion agar method; the zones of inhibition of microbial growth were measured post-incubation. The minimum bactericidal concentration (MBC) and minimum inhibitory concentration (MIC) were determined in Müller-Hinton Broth through the microdilution susceptibility method. anti-biofilm activity was assessed for potent extracts. Results Dry extracts showed potent activity (>16-mm inhibition zones) against gram-positive (Bacillus subtilis IFO3007 and Staphylococcus aureus IFO3060) and gram-negative (Pseudomonas aeruginosa IFO3448 and Escherichia coli IFO3301) bacteria. The activity against fungi was moderate (12–16-mm inhibition zones) for both Aspergillus oryzae IFO4177 and Candida albicans IFO0583; there was no activity against Aspergillus niger IFO4414 growth. Methanolic extract had the lowest MIC and MBC, exhibiting remarkable activity against B. subtilis growth. Fresh extract showed moderate activity against bacterial growth and inactivity against fungal growth. Methanolic extract showed potent anti-biofilm activity (IC50, 2.0 ± 0.18 mg/mL) against S. aureus. Conclusions T. claveryi extracts showed antibacterial effects potentially suitable for clinical application, which warrants further in-depth analysis of their individual isolated compounds.
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Guan T, Wei X, Xu P, Chen K, Zou Y, Chen M, Zhu Z. Comparison of structural and antioxidant activity of polysaccharide extracted from truffles. J Food Sci 2022; 87:2999-3012. [PMID: 35674229 DOI: 10.1111/1750-3841.16207] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 04/09/2022] [Accepted: 05/05/2022] [Indexed: 12/01/2022]
Abstract
As the main component of truffles, polysaccharides have a variety of biological activities such as anti-oxidation, anti-tumor, and hypoglycemic activity, and these activities are closely related to its structure. In this study, Tuber Aestivum crude polysaccharide (TACP) and Tuber Melanosporum crude polysaccharide (TMCP) were obtained from Tuber Aestivum and Tuber Melanosporum by using microwave-assisted hot water, and then the Sephadex G-200 column was utilized to further separate and purify Tuber Aestivum polysaccharide (TAP) and Tuber Melanosporum polysaccharide (TMP) from TACP and TMCP. The structural characterization results showed that the molecular weight of TAP was 2.18 × 104 kDa, while TMP was 8.79 × 103 kDa. Although the two polysaccharide components were mainly composed of mannose (Man) and glucose (Glc), the molar ratio of Man and Glc in TAP was 14.76: 12.31, with a molar ratio of 5.43:10.94 in TMP. Furthermore, the antioxidant activity of two polysaccharide components was evaluated. TAP and TMP could protect porcine jejunal epithelial (IPEC-J2) cells from oxidative damage by H2 O2 , but TAP exhibited stronger antioxidant effects. It was mainly reflected that TAP could increase the secretion level of intracellular antioxidant enzymes (superoxide dismutase and catalase) in IPEC-J2 cells, and had a significant effect on the total antioxidant capacity of cells. The reactive oxygen species and malondialdehyde had better scavenging ability at the concentration of 20 µg/ml. The difference between TAP and TMP may be due to the dissimilar structure. Its structure-activity relationship needs further study. PRACTICAL APPLICATION: The structure of TAP and TMP were different, and TAP had higher molecular weight. Besides, TAP and TMP can protect IPEC-J2 cells from oxidative stress, providing a theoretical basis for developing potential antioxidant drugs of practical significance.
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Affiliation(s)
- Tongwei Guan
- School of Food and Biological Engineering, Xihua University, Chengdu, P. R. China
| | - Xinyue Wei
- School of Food and Biological Engineering, Xihua University, Chengdu, P. R. China
| | - Pei Xu
- School of Food and Biological Engineering, Xihua University, Chengdu, P. R. China
| | - Kebao Chen
- School of Food and Biological Engineering, Xihua University, Chengdu, P. R. China
| | - Yuanfeng Zou
- Natural Medicine Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, P. R. China
| | - Mengsi Chen
- Natural Medicine Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, P. R. China
| | - Zhenyuan Zhu
- Key Laboratory of Food Nutrition and Safety, Ministry of Education, College of Food Science and Biotechnology, Tianjin University of Science and Technology, Tianjin, P. R. China
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Wu Z, Jayachandran M, Cheang WS, Xu B. Black Truffle Extract Exerts Antidiabetic Effects through Inhibition of Inflammation and Lipid Metabolism Regulation. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:6099872. [PMID: 35251478 PMCID: PMC8894047 DOI: 10.1155/2022/6099872] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/26/2021] [Revised: 01/26/2022] [Accepted: 02/02/2022] [Indexed: 11/26/2022]
Abstract
Black truffle, a culinary and medical fungus, is highly valued worldwide for its nutritional and therapeutic importance. To enhance the existing knowledge about the beneficial properties, this study investigates the antioxidant, antihyperlipidemic, and anti-inflammatory effects of black truffle extract in in vitro biochemical assays and animal study. Briefly, black truffle extract was administered orally to treat streptozotocin- (STZ-) induced diabetic Wistar rats for 45 days. At the end of the experimental duration, rats were sacrificed to perform biochemical and gene expression analyses related to lipid regulatory and inflammatory pathways. Our results indicated that total cholesterol, triglycerides, free fatty acids, phospholipids, and low-density lipoprotein in different tissues and circulation were significantly increased in diabetic rats. Furthermore, the β-hydroxy β-methylglutaryl-CoA enzyme was also significantly increased; lipoprotein lipase and lecithin-cholesterol acyltransferase enzymes were significantly decreased in diabetic rats. However, the above conditions were reversed upon black truffle extract feeding. Furthermore, black truffle extract was also found to downregulate the expression of proinflammatory cytokines (tumor necrosis factor-α and interleukin-6) and lipid regulatory genes (serum regulatory element-binding protein-1 and fatty acid synthase). The truffle extract-treated effects were comparable to glibenclamide and medication commonly used to treat diabetes mellitus. Overall, our results suggested that black truffle possesses strong antihyperlipidemic and anti-inflammatory effects on diabetic rats. These findings will enhance the current knowledge about the therapeutic importance of black truffles. They might be exploited as a possible food supplement or even as a natural source of pharmaceutical agents for diabetes prevention and treatment.
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Affiliation(s)
- Ziyuan Wu
- Food Science and Technology Program, BNU-HKBU United International College, Zhuhai, Guangdong 519087, China
| | - Muthukumaran Jayachandran
- Food Science and Technology Program, BNU-HKBU United International College, Zhuhai, Guangdong 519087, China
- Department of Endocrinology and Metabolism, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai 200072, China
| | - Wai San Cheang
- Institute of Chinese Medical Sciences, State Key Laboratory of Quality Research in Chinese Medicine, University of Macau, Macao SAR, China
| | - Baojun Xu
- Food Science and Technology Program, BNU-HKBU United International College, Zhuhai, Guangdong 519087, China
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Effect of γ-irradiation on the structure and antioxidant activity of polysaccharide isolated from the fruiting bodies of Morchella sextelata. Biosci Rep 2021; 40:226365. [PMID: 32896857 PMCID: PMC7494991 DOI: 10.1042/bsr20194522] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Revised: 08/18/2020] [Accepted: 09/02/2020] [Indexed: 01/05/2023] Open
Abstract
The molecular weight of the polysaccharide and the chemical groups it contains has an important influence on its biological activity, relatively low molecular weight polysaccharides may have better antioxidant activity. Polysaccharides isolated from the fruiting bodies of Morchella sextelata (MSP) were treated by γ-irradiation at 10, 100 and 1000 kGy doses, and the physicochemical properties and antioxidant activity of irradiated MSP were investigated. Microscopic observation under a scanning electron microscope (SEM) showed that breakage and pores appeared on the surface of the irradiated polysaccharide. As the irradiation dose increased, the average molecular weight of MSP decreased significantly, while the particle size and thermal stability of MSP first increased at 10 and 100 kGy doses and then decreased at 1000 kGy doses. The antioxidant activities, measured by free radical scavenging tests and protective effect on PC12 cells injured by H2O2, were all increased after irradiation, especially when the concentration of MSP was low (50 and 100 μg/ml). Therefore, irradiation treatment was an effective method to enhance the activity of polysaccharides.
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Wu Z, Meenu M, Xu B. Nutritional value and antioxidant activity of Chinese black truffle (Tuber indicum) grown in different geographical regions in China. Lebensm Wiss Technol 2021. [DOI: 10.1016/j.lwt.2020.110226] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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7
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Li X, Zhu Z, Ye L, Kang Z, Zhang X, Huang Y, Zhang B, Zou Y. Comparison of the Partial Structure and Antioxidant Activity of Polysaccharides from Two Species of Chinese Truffles. Molecules 2020; 25:molecules25184345. [PMID: 32971949 PMCID: PMC7571095 DOI: 10.3390/molecules25184345] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Revised: 09/15/2020] [Accepted: 09/16/2020] [Indexed: 11/16/2022] Open
Abstract
Truffles are world-renowned premium commodities. Due to their unique aroma and rarity, the price of truffles has always been very high. In this study, Diethylaminoethyl anion exchange chromatography and gel filtration were employed for polysaccharide purification from two different species of Chinese truffles. Three polysaccharide fractions were obtained from Tuber panzhihuanense and referred to as TPZ-NP, TPZ-I, and TPZ-II. Additionally, two polysaccharide fractions were purified from T. pseudoexcavatum (TPD-NP and TPD-I). The results of structural elucidation indicated that the polysaccharide from different species showed different monosaccharide composition and linkage units, as well as molecular weight. Two of the polysaccharide fractions with the highest yield, TPZ-I and TPD-I, were chosen for biological testing. The results indicated that both fractions displayed antioxidant properties through mediation of the intestinal cellular antioxidant defense system, which could protect cultured intestinal cells from oxidative stress-induced damage and cell viability suppression. The TPD-I fraction showed stronger antioxidant effects, which may be due to the difference in structure. Further study on the structure-activity relationship is needed to be done.
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Affiliation(s)
- Xiaolin Li
- Soil and Fertilizer Institute, Sichuan Academy of Agricultural Sciences, Chengdu 610066, China; (X.L.); (L.Y.); (Z.K.); (X.Z.); (Y.H.); (B.Z.)
| | - Zhongkai Zhu
- Natural Medicine Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China;
| | - Lei Ye
- Soil and Fertilizer Institute, Sichuan Academy of Agricultural Sciences, Chengdu 610066, China; (X.L.); (L.Y.); (Z.K.); (X.Z.); (Y.H.); (B.Z.)
| | - Zongjing Kang
- Soil and Fertilizer Institute, Sichuan Academy of Agricultural Sciences, Chengdu 610066, China; (X.L.); (L.Y.); (Z.K.); (X.Z.); (Y.H.); (B.Z.)
- Department of Microbiology, College of Resources, Sichuan Agricultural University, Chengdu 611130, China
| | - Xiaoping Zhang
- Soil and Fertilizer Institute, Sichuan Academy of Agricultural Sciences, Chengdu 610066, China; (X.L.); (L.Y.); (Z.K.); (X.Z.); (Y.H.); (B.Z.)
- Department of Microbiology, College of Resources, Sichuan Agricultural University, Chengdu 611130, China
| | - Yue Huang
- Soil and Fertilizer Institute, Sichuan Academy of Agricultural Sciences, Chengdu 610066, China; (X.L.); (L.Y.); (Z.K.); (X.Z.); (Y.H.); (B.Z.)
- Department of Microbiology, College of Resources, Sichuan Agricultural University, Chengdu 611130, China
| | - Bo Zhang
- Soil and Fertilizer Institute, Sichuan Academy of Agricultural Sciences, Chengdu 610066, China; (X.L.); (L.Y.); (Z.K.); (X.Z.); (Y.H.); (B.Z.)
| | - Yuanfeng Zou
- Natural Medicine Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China;
- Correspondence: ; Tel.: +86-28-86291470
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Zeng C, Chen X, Jiang W, Liu Y, Fang C. Isolation, Purification and Antioxidant Activity of The Polysaccharides from Chinese Truffle Tuber sinense. IRANIAN JOURNAL OF PHARMACEUTICAL RESEARCH : IJPR 2020; 19:436-447. [PMID: 32922499 PMCID: PMC7462508 DOI: 10.22037/ijpr.2020.1100954] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The content of polysaccharides in Tuber sinense was investigated by isolation and purification, followed with the further antioxidant studies in total reducing capacity and radical scavenging activities. The crude extract of polysaccharides was purified by dialysis, column chromatography, and High Performance Liquid Chromatography. The main components of monosaccharide (s) and molecular structure of single polysaccharide were studied by using methylation, GC-MS, and NMR analysis. One new water-soluble non-starch polysaccharide (PTS-A with the yield of 0.41%) from T. sinense was purified and identified on structural characteristics for the first time. The characterizations of PTS-A were studied on physicochemical properties, main components of monosaccharide (s) and molecular structure. PTS-A was identified as glucan, only containing D-glucoses with the molecular structure of [→6) α-D-Glcp (1→6) α-D-Glcp (1→]n by methylation analysis and NMR. In the determination of total reducing capacity, their reducing abilities could be listed as vitamin C> PTS-A> crude polysaccharides-3> crude polysaccharides-2> crude polysaccharides-1. All of PTS-A, crude polysaccharides-2 and -3 were relatively good scavenger for 1,1-Diphenyl-2-picrylhydrazyl radical 2,2-Diphenyl-1- (2,4,6-trinitrophenyl) hydrazyl radicals with the IC50 of 2.81, 4.17 and 3.44 mg/mL, respectively. Thus, the separation and purification of polysaccharides were significant to increase the antioxidant activity in some degree. One new water-soluble 1,6-α-ᴅ-dextran was discovered with the polysaccharide structure identified for the first time. Both PTS-A and crude extracts of polysaccharide performed a potent potential on antioxidant activities. The bioactivities of PTS-A should be generalized to the broader pharmacological effects.
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Affiliation(s)
- Caihong Zeng
- Jiangxi University of Technology, Nanchang 330098, Jiangxi, China
| | - Xiaoyan Chen
- Jiangxi University of Technology, Nanchang 330098, Jiangxi, China
| | - Wenwen Jiang
- Center of Drug Metabolism and Pharmacokinetics, China Pharmaceutical University, Jiangsu 210009, China
| | - Yanling Liu
- Jiangxi University of Technology, Nanchang 330098, Jiangxi, China
| | - Chunjuan Fang
- Jiangxi University of Technology, Nanchang 330098, Jiangxi, China
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Dioscorea saponin transforms the structure of truffle exo-polysaccharide and enhances its antioxidant activity. Lebensm Wiss Technol 2020. [DOI: 10.1016/j.lwt.2020.109417] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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10
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Sun Q, Zhang Z, Xu L, Shi W, Liu X, Wang F. Increasing Production of Truffle Polysaccharides in the Solid-state Fermentation of Tuber melanosporum by Diosgenin Based on Orthogonal Matrix and Nonlinear Regression Analysis. FOOD SCIENCE AND TECHNOLOGY RESEARCH 2020. [DOI: 10.3136/fstr.26.487] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Quanshan Sun
- School of Food Science and Biological Engineering, Jiangsu University
| | - Zhicai Zhang
- Institute of Agro-production Processing Engineering, Jiangsu University
- Zhenjiang Yemaikang Food Bio-Technology Co., Ltd
| | - Ling Xu
- School of Food Science and Biological Engineering, Jiangsu University
| | - Wenjing Shi
- School of Food Science and Biological Engineering, Jiangsu University
| | - Xiaocui Liu
- School of Food Science and Biological Engineering, Jiangsu University
| | - Feng Wang
- School of Food Science and Biological Engineering, Jiangsu University
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Zhong L, Ma N, Zheng H, Ma G, Zhao L, Hu Q. Tuber indicum polysaccharide relieves fatigue by regulating gut microbiota in mice. J Funct Foods 2019. [DOI: 10.1016/j.jff.2019.103580] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
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12
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Zhang X, Li X, Wu C, Ye L, Kang Z, Zhang X. Exogenous Nitric Oxide and Phosphorus Stress Affect the Mycorrhization, Plant Growth, and Associated Microbes of Carya illinoinensis Seedlings Colonized by Tuber indicum. Front Microbiol 2019; 10:2634. [PMID: 31798561 PMCID: PMC6863891 DOI: 10.3389/fmicb.2019.02634] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Accepted: 10/29/2019] [Indexed: 11/13/2022] Open
Abstract
In the artificial cultivation of truffles, ectomycorrhizal colonization level, host plant quality, and the associated microbes in the rhizosphere soil are vitally important. To explore the effects of nitric oxide (NO) and phosphorus (P) stress on the early symbiosis of truffles and host plants, different concentrations of exogenous NO donor sodium nitroprusside (SNP) and P were applied to Carya illinoinensis seedlings inoculated with the Chinese black truffle (Tuber indicum). The growth of T. indicum-mycorrhized seedlings and their mycorrhizal colonization rate were investigated. Additionally, the denitrifying bacterial community harboring NO reductase (norB) genes and the fungal community in the rhizosphere of the host were analyzed by high-throughput sequencing. The results showed that the colonization rate of T. indicum was significantly influenced by SNP treatments and P stress, with the highest level being obtained when the SNP was 100 μmol/L under low P stress (5 μmol/L). Treatment with 100 μmol/L SNP alone also increased the colonization rate of T. indicum and had positive effects on the plant height, stem circumference, biomass, root-shoot ratio and root POD activity of the seedlings at different times after inoculation. Under low P stress, the 100 μmol/L SNP increased the richness of the norB-type denitrifying bacterial community. Interestingly, the diversity and richness of norB-type denitrifying bacteria were significantly positively correlated with the colonization rate of T. indicum. SNP treatments under low P stress altered the abundance of some dominant taxa such as Alphaproteobacteria, Gammaproteobacteria, Pseudomonas, Ensifer, and Sulfitobacter. Evaluation of the fungal community in the rhizosphere revealed that 100 μmol/L SNP treatment alone had no noticeable effect on their richness and diversity, but it did shape the abundance of some fungi. Buellia, Podospora, Phaeoisaria, Ascotaiwania, and Lophiostoma were more abundant following exogenous NO application, while the abundance of Acremonium, Monographella, and Penicillium were decreased. Network analysis indicated that T. indicum was positively and negatively correlated with some fungal genera when treated with 100 μmol/L SNP. Overall, these results revealed how exogenous NO and P stress influence the symbiosis of truffles and host plants, and indicate that application of SNP treatments has the potential for ectomycorrhizal synthesis and truffle cultivation.
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Affiliation(s)
- Xiaoping Zhang
- Department of Microbiology, College of Resources, Sichuan Agricultural University, Chengdu, China
- Soil and Fertilizer Institute, Sichuan Academy of Agricultural Sciences, Chengdu, China
| | - Xiaolin Li
- Soil and Fertilizer Institute, Sichuan Academy of Agricultural Sciences, Chengdu, China
| | - Chenguang Wu
- Department of Microbiology, College of Resources, Sichuan Agricultural University, Chengdu, China
- Soil and Fertilizer Institute, Sichuan Academy of Agricultural Sciences, Chengdu, China
| | - Lei Ye
- Soil and Fertilizer Institute, Sichuan Academy of Agricultural Sciences, Chengdu, China
| | - Zongjing Kang
- Department of Microbiology, College of Resources, Sichuan Agricultural University, Chengdu, China
- Soil and Fertilizer Institute, Sichuan Academy of Agricultural Sciences, Chengdu, China
| | - Xiaoping Zhang
- Department of Microbiology, College of Resources, Sichuan Agricultural University, Chengdu, China
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Khalifa SA, Farag MA, Yosri N, Sabir JS, Saeed A, Al-Mousawi SM, Taha W, Musharraf SG, Patel S, El-Seedi HR. Truffles: From Islamic culture to chemistry, pharmacology, and food trends in recent times. Trends Food Sci Technol 2019. [DOI: 10.1016/j.tifs.2019.07.008] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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14
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15
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The optimum conditions and mechanism for increasing exo-polysaccharide production of Truffles melanosporum by Dioscorea saponins. Lebensm Wiss Technol 2019. [DOI: 10.1016/j.lwt.2019.03.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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16
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Li JM, Liang HQ, Qiao P, Su KM, Liu PG, Guo SX, Chen J. Chemical Composition and Antioxidant Activity of Tuber indicum from Different Geographical Regions of China. Chem Biodivers 2019; 16:e1800609. [PMID: 30605248 DOI: 10.1002/cbdv.201800609] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2018] [Accepted: 01/03/2019] [Indexed: 12/26/2022]
Abstract
Tuber indicum, an endemic truffle species in eastern Asian, is an edible mushroom that is both an important export and widely distributed across China. Many existing studies on truffles focus on analyzing their taxonomy, population genetics, volatile organic compounds and artificial cultivation of the truffles, while little information is available about their nutrient composition and pharmacological activity, especially the relationship between chemical composition in ascocarps and their geographic distributions. This study presents a comprehensive investigation of the chemical composition of T. indicum, including free sugars, fatty acids, organic acids, phenolic acids, flavonoids, and polysaccharides, and tracks the antioxidant activity of T. indicum ascocarps collected from five geographical regions of four provinces in P. R. China: Hebei, Tibet, Yunnan, and Liaoning province. Our results showed that T. indicum collected from Qujing, Yunnan province, possessed the highest amount of free sugars (23.67 mg/g dw), total flavonoids (2.31 mg/g dw), total phenolics (4.46 mg/g dw) and the highest DPPH and ABTS radical-scavenging activities. The amount of water-soluble polysaccharides was the highest (115.24 mg/g dw) in ascocarps from Tibet, the total organic acids was the highest (22.073 mg/g dw) in ascocarps from Gongshan, and polyunsaturated fatty acids were most abundant in those from Hebei province. This study reveals that the quantity of chemical compounds in T. indicum varies by geographical origin. Detecting differences in chemical composition may provide important data for understanding the relationship between environmental factors and truffle formation, as well as quality evaluation of the commercial species T. indicum throughout China.
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Affiliation(s)
- Jia-Mei Li
- Key Laboratory of Bioactive Substances and Resource Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100193, P. R. China
| | - Han-Qiao Liang
- Biochemical School, Beijing City University, Beijing, 100083, P. R. China
| | - Peng Qiao
- Shandong Institute of Sericulture, Shandong Academy of Agricultural Sciences, Yantai, 250100, P. R. China
| | - Kai-Mei Su
- Institute of Biotechnology and Germplasm Resources, Yunnan Academy of Agricultural Sciences, Kunming, 650223, P. R. China
| | - Pei-Gui Liu
- Key Laboratory for Plant Diversity and Biogeography at East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, P. R. China
| | - Shun-Xing Guo
- Key Laboratory of Bioactive Substances and Resource Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100193, P. R. China
| | - Juan Chen
- Key Laboratory of Bioactive Substances and Resource Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100193, P. R. China
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Zou Y, Du F, Hu Q, Wang H. The structural characterization of a polysaccharide exhibiting antitumor effect from Pholiota adiposa mycelia. Sci Rep 2019; 9:1724. [PMID: 30741980 PMCID: PMC6370848 DOI: 10.1038/s41598-018-38251-6] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Accepted: 12/19/2018] [Indexed: 11/29/2022] Open
Abstract
PAP80-2a, purified from Pholiota adiposa mycelia, is a polysaccharide exhibiting prominent antitumor effects. However, the yield of PAP80-2a was low and its structure has not been characterized, impeding the exploration of its structure-function relationship, thus influencing the development of oral drugs for antitumor therapy and immunomodulation. In order to improve the yield of PAP80-2a, response surface methodology along with Box-Behnken design was applied to optimize the ultrasonic-assisted extraction conditions for polysaccharides. Then, the structure of PAP80-2a exhibiting antitumor activity was determined from different angles. The results showed that the extraction yield of P. adiposa polysaccharides increased by 11.5% under optimized ultrasonic extraction conditions. Structural analysis showed that PAP80-2a was mainly composed of glucose, rhamnose, xylose, and galactose in a ratio of 10.00: 2.09: 4.09: 1.13. The total amino acid content in the sugar chain was 69.92 μg/mL. The sugar chain structure was [α-Rha (1 → 3)-]n, and rhamnose was located at the non-reducing end of the sugar chain, while glucose was located at the non-reducing end or in the sugar chain in 1,2,6- and 1,3,6-linked forms. Our study clearly illuminates the primary structure of PAP80-2a, but 3D structure of PAP80-2a and its structure–function relationship is a future challenge.
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Affiliation(s)
- Yajie Zou
- Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, 12 Zhongguancun South Street, Beijing, 100081, China
| | - Fang Du
- Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, 12 Zhongguancun South Street, Beijing, 100081, China
| | - Qingxiu Hu
- Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, 12 Zhongguancun South Street, Beijing, 100081, China.
| | - Hexiang Wang
- State Key Laboratory for Agrobiotechnology and Department of Microbiology, China Agricultural University, 2 Yuanmingyuan West road, Beijing, 100193, China
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19
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Purification, characterization, and complement fixation activity of acidic polysaccharides from Tuber sinoaestivum. Lebensm Wiss Technol 2017. [DOI: 10.1016/j.lwt.2017.07.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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20
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Chen Y, Du XJ, Zhang Y, Liu XH, Wang XD. Ultrasound extraction optimization, structural features, and antioxidant activity of polysaccharides from Tricholoma matsutake. J Zhejiang Univ Sci B 2017; 18:674-684. [PMID: 28786242 PMCID: PMC5565515 DOI: 10.1631/jzus.b1600239] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2016] [Accepted: 09/12/2016] [Indexed: 01/12/2023]
Abstract
An ultrasonic-assisted technique was employed to extract crude polysaccharide from Tricholoma matsutake fruiting bodies. Single-factor tests and orthogonal experimental design (L9(33)) were used to obtain the optimal extraction conditions. Results showed that the optimal parameters were as follows: ultrasonic temperature, 40 °C; ultrasonic time, 50 min; water to raw material ratio, 25 ml/g; ultrasonic frequency, 45 kHz; and ultrasonic power, 100 W. Three novel T. matsutake polysaccharide (TMP) fractions (TMP30, TMP60, and TMP80) were isolated and purified from TMP by stepwise alcohol precipitation. Their preliminary structural features were determined by high-performance anion-exchange chromatography with pulsed-amperometric detection (HPAEC-PAD) and Fourier transform infrared spectrophotometer (FT-IR) analyses. Furthermore, their in vitro antioxidant activity was investigated in terms of a reducing power assay and the scavenging rates of 2,2-diphenyl-1-picrylhydrazyl (DPPH) and hydroxyl radicals. The order of the various fractions based on their antioxidant activity was TMP80>TMP>TMP60>TMP30. These findings suggested that novel polysaccharide fractions from T. matsutake, especially TMP80, could be promising active macromolecules for biomedical use.
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Affiliation(s)
- Yun Chen
- College of Life Science, Liaocheng University, Liaocheng 252059, China
| | - Xiu-ju Du
- College of Life Science, Liaocheng University, Liaocheng 252059, China
| | - Yang Zhang
- College of Life Science, Liaocheng University, Liaocheng 252059, China
| | - Xin-hua Liu
- Agricultural Science Institute of Liaocheng, Liaocheng 252000, China
| | - Xuan-dong Wang
- College of Life Science, Liaocheng University, Liaocheng 252059, China
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21
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Bhotmange DU, Wallenius JH, Singhal RS, Shamekh SS. Enzymatic extraction and characterization of polysaccharide from Tuber aestivum. ACTA ACUST UNITED AC 2017. [DOI: 10.1016/j.bcdf.2017.02.001] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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22
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Shi JJ, Zhang JG, Sun YH, Qu J, Li L, Prasad C, Wei ZJ. Physicochemical properties and antioxidant activities of polysaccharides sequentially extracted from peony seed dreg. Int J Biol Macromol 2016; 91:23-30. [DOI: 10.1016/j.ijbiomac.2016.05.082] [Citation(s) in RCA: 74] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2016] [Revised: 05/18/2016] [Accepted: 05/22/2016] [Indexed: 12/20/2022]
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Extraction, characterization and antioxidant activity of water-soluble polysaccharides from Tuber huidongense. Int J Biol Macromol 2016; 91:431-42. [DOI: 10.1016/j.ijbiomac.2016.05.108] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2016] [Revised: 05/23/2016] [Accepted: 05/29/2016] [Indexed: 11/18/2022]
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24
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Antioxidant Activity and Characterization of One New Polysaccharide Obtained from Perigord Truffle (Tuber huidongense). EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2016; 2016:3537193. [PMID: 27446223 PMCID: PMC4944038 DOI: 10.1155/2016/3537193] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/17/2016] [Revised: 05/19/2016] [Accepted: 06/07/2016] [Indexed: 11/18/2022]
Abstract
As a medicinal and edible fungus parasitizing on the trees, Perigord Truffle (Tuber huidongense) is well known for its delicious taste, unique smell, and high medical value for healthcare. One new water-soluble nonstarch polysaccharide (PST-W with the yield of 0.41%) from Perigord Truffle (Tuber huidongense) was purified and identified on structural characteristics for the first time. The characterizations of PST-W were studied on physicochemical properties, main components of monosaccharide(s), and molecular structure. The monosaccharide compositions of PST-W were studied and identified as glucan, only containing D-glucoses with the molecular structure of [→6) α-D-Glcp (1 → 6) α-D-Glcp (1→]n by methylation analysis and NMR. In the determination of total reducing capacity, the reducing abilities of polysaccharide extracts could be listed as vitamin C > PST-W > crude polysaccharides-3 > crude polysaccharides-2 > crude polysaccharides-1. All of PST-W, crude polysaccharides-2, and crude polysaccharides-3 were relatively good scavenger for 1,1-Diphenyl-2-picrylhydrazyl radical 2,2-Diphenyl-1-(2,4,6-trinitrophenyl)hydrazyl radicals with IC50 of 2.81, 4.17, and 3.44 mg/mL, respectively. However, O2−∙ clearing abilities of PST-W and crude polysaccharides were obviously weaker. The activities of total crude extract were the worst, indicating that the impurities might negatively affect the antioxidant activity. Thus, the separation and purification of polysaccharides were significant to increase the antioxidant activity in some degree.
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Cheng JR, Liu XM, Chen ZY, Zhang YS, Zhang YH. Mulberry anthocyanin biotransformation by intestinal probiotics. Food Chem 2016; 213:721-727. [PMID: 27451240 DOI: 10.1016/j.foodchem.2016.07.032] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2015] [Revised: 06/01/2016] [Accepted: 07/05/2016] [Indexed: 11/25/2022]
Abstract
This study was designed to evaluate mulberry anthocyanins bioconversion traits for intestinal probiotics. Five intestinal beneficial bacteria were incubated with mulberry anthocyanins under anaerobic conditions at 37°C, and bacterial β-glucosidase activity and anthocyanin level were determined. Results demonstrated that all strains could convert mulberry anthocyanins to some extent. With high β-glucosidase production capacity, Streptococcus thermophiles GIM 1.321 and Lactobacillus plantarum GIM 1.35 degraded mulberry anthocyanins by 46.17% and 43.62%, respectively. Mulberry anthocyanins were mainly biotransformed to chlorogenic acid, crypto-chlorogenic acid, caffeic acid, and ferulic acid during the anaerobic process. Non-enzymatic deglycosylation of anthocyanins also occurred and approximately 19.42% of the anthocyanins were degraded within 48h by this method.
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Affiliation(s)
- Jing-Rong Cheng
- Sericultural & Agri-Food Research Institute, Guangdong Academy of Agricultural Sciences, Key Laboratory of Functional Foods, Ministry of Agriculture, Guangdong Key Laboratory of Agricultural Products Processing, Guangzhou 510610, PR China.
| | - Xue-Ming Liu
- Sericultural & Agri-Food Research Institute, Guangdong Academy of Agricultural Sciences, Key Laboratory of Functional Foods, Ministry of Agriculture, Guangdong Key Laboratory of Agricultural Products Processing, Guangzhou 510610, PR China.
| | - Zhi-Yi Chen
- Sericultural & Agri-Food Research Institute, Guangdong Academy of Agricultural Sciences, Key Laboratory of Functional Foods, Ministry of Agriculture, Guangdong Key Laboratory of Agricultural Products Processing, Guangzhou 510610, PR China
| | - You-Sheng Zhang
- Sericultural & Agri-Food Research Institute, Guangdong Academy of Agricultural Sciences, Key Laboratory of Functional Foods, Ministry of Agriculture, Guangdong Key Laboratory of Agricultural Products Processing, Guangzhou 510610, PR China
| | - Ye-Hui Zhang
- Sericultural & Agri-Food Research Institute, Guangdong Academy of Agricultural Sciences, Key Laboratory of Functional Foods, Ministry of Agriculture, Guangdong Key Laboratory of Agricultural Products Processing, Guangzhou 510610, PR China
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Antioxidant property of water-soluble polysaccharides from Poria cocos Wolf using different extraction methods. Int J Biol Macromol 2016; 83:103-10. [DOI: 10.1016/j.ijbiomac.2015.11.032] [Citation(s) in RCA: 77] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2015] [Revised: 10/19/2015] [Accepted: 11/12/2015] [Indexed: 12/25/2022]
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27
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Xiao C, Feng S, Wang H, Gong Z, Ng T. Purification and characterization of a ribonuclease with antiproliferative activity from the mystical wild mushroom Tuber indicum. J Basic Microbiol 2013; 54 Suppl 1:S102-8. [PMID: 23787947 DOI: 10.1002/jobm.201300018] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2013] [Accepted: 05/09/2013] [Indexed: 11/09/2022]
Abstract
An RNase with a molecular mass of 28 kDa and with high ribonucleolytic activity toward poly(A) was purified from the ascocarps of Tuber indicum. The purification procedure involved ion exchange chromatography on diethylaminoethyl cellulose, Q-Sepharose and Mono Q, and gel filtration by fast protein liquid chromatography on Superdex 75. The pH and temperature optima of the RNase were 7.2 and 50 °C, respectively. The ranking of its activity toward various polyhomoribonucleotides was poly(A)>poly(C)>poly(G) ≈ poly(U). All of the metal ions used in this study, except for the K(+) ions, curtailed the activity of the RNase. The RNase activity was reduced by ethylene diamine tetraacetic acid (EDTA), dithiothreitol (DTT), and sodium dodecyl sulfate (SDS) by 42.2%, 75.5%, and 96.6%, respectively. The RNase inhibited the proliferation of hepatoma (HepG2) and human breast cancer cell lines (MCF7), with half-maximal inhibitory concentrations (IC50 ) of 12.6 and 16.6 μM, respectively.
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Affiliation(s)
- Chen Xiao
- State Key Laboratory for Agrobiotechnology and Department of Microbiology, China Agricultural University, Beijing, China
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