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Ren JL, Li CM, Shen L, Wu J. A new terrein dimer and a new meroterpene from the mangrove endophytic fungus Lichtheimia sp. JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 2023; 25:1068-1075. [PMID: 37042744 DOI: 10.1080/10286020.2023.2197596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Revised: 03/27/2023] [Accepted: 03/28/2023] [Indexed: 06/19/2023]
Abstract
A new terrein dimer named lichtheicol A (1) and a new meroterpene named lichtheiterpene A (2), were isolated from the mangrove endophytic fungus Lichtheimia sp. J2B1, together with 10 known compounds (3-12). The planar structures and absolute configurations of 1 and 2 were established by a combination of extensive spectroscopic data analyses and electronic circular dichroism (ECD) calculations. Compounds 4 and 5 exhibited marked inhibitory effects against butyrylcholinesterase (BuChE) with IC50 values of 0.71 and 0.53 μM, respectively.
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Affiliation(s)
- Jing-Ling Ren
- School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Cai-Mao Li
- School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Li Shen
- Guangdong Key Laboratory of Natural Medicine Research and Development, College of Pharmacy, Guangdong Medical University, 1, Xincheng Road, Songshan Lake Zone, Dongguan 523808, China
| | - Jun Wu
- School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China
- Guangdong Key Laboratory of Natural Medicine Research and Development, College of Pharmacy, Guangdong Medical University, 1, Xincheng Road, Songshan Lake Zone, Dongguan 523808, China
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2
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Nguyen TTT, Santiago ALCMDA, Kirk PM, Lee HB. Discovery of a New Lichtheimia (Lichtheimiaceae, Mucorales) from Invertebrate Niche and Its Phylogenetic Status and Physiological Characteristics. J Fungi (Basel) 2023; 9:jof9030317. [PMID: 36983485 PMCID: PMC10056009 DOI: 10.3390/jof9030317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Revised: 02/27/2023] [Accepted: 03/01/2023] [Indexed: 03/08/2023] Open
Abstract
Species of Lichtheimia are important opportunistic fungal pathogens in the order Mucorales that are isolated from various sources such as soil, indoor air, food products, feces, and decaying vegetables. In recent years, species of Lichtheimia have become an emerging causative agent of invasive mucormycosis. In Europe and USA, Lichtheimia are the second and third most common causal fungus of mucormycosis, respectively. Thus, the aim of this study was to survey the diversity of species of Lichtheimia hidden in poorly studied hosts, such as invertebrates, in Korea. Eight Lichtheimia strains were isolated from invertebrate samples. Based on morphology, physiology, and phylogenetic analyses of ITS and LSU rDNA sequence data, the strains were identified as L. hyalospora, L. ornata, L. ramosa, and a novel species, L. koreana sp. nov. Lichtheimia koreana is characterized by a variable columellae, sporangiophores arising solitarily or up to three at one place from stolons, and slow growth on MEA and PDA at all temperatures tested. The new species grows best at 30 and 35 °C and has a maximum growth temperature of 40 °C. Detailed descriptions, illustrations, and a phylogenetic tree are provided.
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Affiliation(s)
- Thuong T. T. Nguyen
- Environmental Microbiology Laboratory, Department of Agricultural Biological Chemistry, College of Agriculture and Life Sciences, Chonnam National University, Gwangju 61186, Republic of Korea
| | | | - Paul M. Kirk
- Biodiversity Informatics and Spatial Analysis, Jodrell Laboratory, Royal Botanic Gardens Kew, Surrey TW9 3DS, UK
| | - Hyang Burm Lee
- Departamento de Micologia, Universidade Federal de Pernambuco, Av. da Engenharia, s/n, Recife 50740-4600, PE, Brazil
- Correspondence:
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3
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Sanguine IS, Cavalheiro GF, Garcia NFL, Santos MVD, Gandra JR, Goes RHDTEBD, Paz MFD, Fonseca GG, Leite RSR. Xylanases of Trichoderma koningii and Trichoderma pseudokoningii: Production, characterization and application as additives in the digestibility of forage for cattle. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2022. [DOI: 10.1016/j.bcab.2022.102482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Portela VO, Santana NA, Balbinot ML, Antoniolli ZI, de Oliveira Silveira A, Jacques RJS. Phytotoxicity Optimization of Fungal Metabolites Produced by Solid and Submerged Fermentation and its Ecotoxicological Effects. Appl Biochem Biotechnol 2022; 194:2980-3000. [PMID: 35316475 DOI: 10.1007/s12010-022-03884-x] [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: 10/05/2021] [Accepted: 03/14/2022] [Indexed: 11/02/2022]
Abstract
Research and commercial production of bioherbicides occur to a lesser extent compared to bioinsecticides and biofungicides. In order to contribute to developing new bioherbicides with low environmental impact, this study aimed to increase the phytotoxicity of metabolites of the fungus Mycoleptodiscus indicus UFSM 54 by optimizing solid and submerged fermentation and evaluate the ecotoxicological effects on earthworms (Eisenia andrei). The Plackett-Burman and central composite rotatable designs were used to optimize metabolite phytotoxicity. The variables optimized in the fermentation were temperature, agitation, pH, water volume in the culture medium, glucose concentration, and yeast extract. The fungus was grown on sugarcane bagasse substrate, and its metabolites were applied to detached Cucumis sativus, Conyza sp., and Sorghum bicolor leaves and used in an avoidance test and acute exposure to earthworms. Metabolite phytotoxicity in submerged fermentation was optimized at 35 °C, 50 rpm, and 1.5 g l-1 of glucose and in solid fermentation at 30-37 °C and in 14-32 ml of water. The metabolites severely damaged germination, initial growth, and leaves of the three plants, and at the doses tested (maximum of 113.92 ml kg-1), the metabolites of M. indicus UFSM 54 were not toxic to earthworms.
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Affiliation(s)
- Valéria Ortaça Portela
- Department of Soils, Federal University of Santa Maria, 97.105-900, Santa Maria, RS, Brazil
| | - Natielo Almeida Santana
- Department of Sanitary and Environmental Engineering, Federal University of Santa Maria, Brazil, 97.105-900, Santa Maria, RS, Brazil
| | - Michele Lusa Balbinot
- Department of Sanitary and Environmental Engineering, Federal University of Santa Maria, Brazil, 97.105-900, Santa Maria, RS, Brazil
| | - Zaida Inês Antoniolli
- Department of Soils, Federal University of Santa Maria, 97.105-900, Santa Maria, RS, Brazil
| | - Andressa de Oliveira Silveira
- Department of Sanitary and Environmental Engineering, Federal University of Santa Maria, Brazil, 97.105-900, Santa Maria, RS, Brazil
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Improved strategies to efficiently isolate thermophilic, thermotolerant, and heat-resistant fungi from compost and soil. Mycol Prog 2021. [DOI: 10.1007/s11557-021-01674-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
AbstractThermophilic, thermotolerant and heat-resistant fungi developed different physiological traits, enabling them to sustain or even flourish under elevated temperatures, which are life-hostile for most other eukaryotes. With the growing demand of heat-stable molecules in biotechnology and industry, the awareness of heat-adapted fungi as a promising source of respective enzymes and biomolecules is still increasing. The aim of this study was to test two different strategies for the efficient isolation and identification of distinctly heat-adapted fungi from easily accessible substrates and locations. Eight compost piles and ten soil sites were sampled in combination with different culture-dependent approaches to describe suitable strategies for the isolation and selection of thermophilous fungi. Additionally, an approach with a heat-shock treatment, but without elevated temperature incubation led to the isolation of heat-resistant mesophilic species. The cultures were identified based on morphology, DNA barcodes, and microsatellite fingerprinting. In total, 191 obtained isolates were assigned to 31 fungal species, from which half are truly thermophilic or thermotolerant, while the other half are heat-resistant fungi. A numerous amount of heat-adapted fungi was isolated from both compost and soil samples, indicating the suitability of the used approaches and that the richness and availability of those organisms in such environments are substantially high.
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El-Ghonemy DH. Optimization of extracellular ethanol-tolerant β-glucosidase production from a newly isolated Aspergillus sp. DHE7 via solid state fermentation using jojoba meal as substrate: purification and biochemical characterization for biofuel preparation. J Genet Eng Biotechnol 2021; 19:45. [PMID: 33761018 PMCID: PMC7991022 DOI: 10.1186/s43141-021-00144-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Accepted: 03/12/2021] [Indexed: 12/14/2022]
Abstract
BACKGROUND The increasing demand and the continuous depletion in fossil fuels have persuaded researchers to investigate new sources of renewable energy. Bioethanol produced from cellulose could be a cost-effective and a viable alternative to petroleum. It is worth note that β-glucosidase plays a key role in the hydrolysis of cellulose and therefore in the production of bioethanol. This study aims to investigate a simple and standardized method for maximization of extracellular β-glucosidase production from a novel fungal isolate under solid-state fermentation using agro-industrial residues as the sole source of carbon and nitrogen. Furthermore, purification and characterization of β-glucosidase were performed to determine the conditions under which the enzyme displayed the highest performance. RESULTS A fungus identified genetically as a new Aspergillus sp. DHE7 was found to exhibit the highest extracellular β-glucosidase production among the sixty fungal isolates tested. Optimization of culture conditions improved the enzyme biosynthesis by 2.1-fold (174.6 ± 5.8 U/g of dry substrate) when the fungus grown for 72 h at 35 °C on jojoba meal with 60% of initial substrate moisture, pH 6.0, and an inoculum size of 2.54 × 107 spores/mL. The enzyme was purified to homogeneity through a multi-step purification process. The purified β-glucosidase is monomeric with a molecular mass of 135 kDa as revealed by the SDS-PAGE analysis. Optimum activity was observed at 60 °C and pH of 6.0, with a remarkable pH and thermal stability. The enzyme retained about 79% and 53% of its activity, after 1 h at 70 °C and 80 °C, respectively. The purified β-glucosidase hydrolysed a wide range of substrates but displaying its greater activity on p-nitrophenyl-β-D-glucopyranoside and cellobiose. The values of Km and Vmax on p-nitrophenyl β-D-glucopyranoside were 0.4 mM and 232.6 U/mL, respectively. Purified β-glucosidase displayed high catalytic activity (improved by 25%) in solutions contained ethanol up to 15%. CONCLUSION β-glucosidase characteristics associated with its ability to hydrolyse cellobiose, underscore its utilization in improving the quality of food and beverages. In addition, taking into consideration that the final concentration of ethanol produced by the conventional methods is about 10%, suggests its use in ethanol-containing industrial processes and in the saccharification processes for bioethanol production.
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Affiliation(s)
- Dina H El-Ghonemy
- Microbial Chemistry Department, Genetic Engineering and Biotechnology Research Division, National Research Centre, 33 El Buhouth St, Giza, 12622, Egypt.
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Zhang Z, Li H, Xu T, Xu H, He S, Li Z, Zhang Z. Jianqu fermentation with the isolated fungi significantly improves the immune response in immunosuppressed mice. JOURNAL OF ETHNOPHARMACOLOGY 2021; 267:113512. [PMID: 33223116 DOI: 10.1016/j.jep.2020.113512] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2020] [Revised: 09/09/2020] [Accepted: 10/20/2020] [Indexed: 06/11/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Jianqu, a classical formula of traditional Chinese medicine, is used clinically to treat symptoms like chill and fever headache, diarrhea and loss of appetite and act on patients with low immunity. However, the quality control of Jianqu fermentation is not well established, and its function in regulating the body's immunity still remains unclear. AIM OF THE STUDY The present study firstly assesses the structure and diversity of fungal community during Jianqu fermentation and then investigates the immune regulating function of Jianqu extract in mouse model. MATERIALS AND METHOD The high-throughput sequencing is conducted to analyze the diversity and distribution of fungal community during the fermentation process of Jianqu, and then fungi with a high frequency and relative abundance are isolated. The immunosuppressed mice are induced by using cyclophosphamide (CTX) and used to evaluate the immune regulating function of Jianqu extract from natural fermentation or directed fermentation, respectively. RESULTS With the fermentation, the diversity and distribution of fungal community significantly changed. The number of OTU (operational taxonomic unit) was gradually decreased from 223 ± 1 in the early phase to 201 ± 11 in the middle phase and to 175 ± 32 in the later phase of Jianqu fermentation. Generally, in genus level, Millerozyma, Debaryomyces and Rhizomucor showed a significant increase and became dominant in the mid or later phase of fermentation, while the Aspergillus displayed a decrease following the fermentation. However, Saccharomycopsis is a dominate species in surveyed samples. Next, six fungi strains with a high frequency and relative abundance, including Saccharomycopsis fibuligera, Millerozyma farinose, Hyphopichia burtonii, Rhizomucor pusillus, Lichtheimia ramosa, and Monascus purpureus, are isolated successfully. Interestingly, directed fermentation for Jianqu with the six isolated fungi strains could achieve similar morphological characteristics with the natural fermentation. Consistently, Jianqu extract from directed fermentation demonstrated a similar therapeutic effect on immune response as that of naturally fermented Jianqu. CONCLUSIONS We firstly showed the significant change of structural profiles of fungal communities during Jianqu fermentation, and successfully isolated six dominate fungi strains in Jianqu. Interestingly, directed fermentation for Jianqu with these isolated strains could achieve a similar morphological characteristics and immune-modulating function as natural fermentation. It was suggested that Jianqu fermentation with functional fungi instead of natural microbes provide a new approach for the improvement of the production and quality control of the traditional Chinese medicine of Jianqu.
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Affiliation(s)
- Zhongbao Zhang
- Department of Pharmaceutical Engineering, Sichuan University of Science and Engineering, Zigong, China
| | - Hao Li
- Department of Pharmaceutical Engineering, Sichuan University of Science and Engineering, Zigong, China
| | - Ting Xu
- College of Bioengineering, Sichuan University of Science and Engineering, Yibin, China
| | - Haowan Xu
- College of Bioengineering, Sichuan University of Science and Engineering, Yibin, China
| | - Shaoting He
- College of Bioengineering, Sichuan University of Science and Engineering, Yibin, China
| | - Zaixin Li
- Department of Pharmaceutical Engineering, Sichuan University of Science and Engineering, Zigong, China; College of Bioengineering, Sichuan University of Science and Engineering, Yibin, China.
| | - Zhi Zhang
- Department of Pharmaceutical Engineering, Sichuan University of Science and Engineering, Zigong, China; College of Bioengineering, Sichuan University of Science and Engineering, Yibin, China.
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de Andrade Silva CA, da Silva PGP, da Silva GFA, Dantas DP, Leite RSR, Fonseca GG. Biotransformation of fruit residues via solid state bioprocess using Lichtheimia ramosa. SN APPLIED SCIENCES 2020. [DOI: 10.1007/s42452-020-2689-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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A thermophilic fungal GH36 α-galactosidase from Lichtheimia ramosa and its synergistic hydrolysis of locust bean gum. Carbohydr Res 2020; 491:107911. [PMID: 32217360 DOI: 10.1016/j.carres.2020.107911] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Revised: 01/12/2020] [Accepted: 01/13/2020] [Indexed: 01/07/2023]
Abstract
A novel GH36 α-galactosidase gene (LrAgal36A) from Lichtheimia ramosa was synthesized and highly expressed in Pichia pastoris. The enzyme titer and protein yield for high-density fermentation in a 5 L fermentor were up to 953.6 U mL-1 and 4.36 g L-1. Purified recombinant LrAgal36A showed the maximum activity at pH 6.0 and 65 °C and was thermostable with a half-life of 70 min at 60 °C. LrAgal36A displayed the highest specific activity (353.17 ± 4.19 U mg-1) toward p-nitrophenyl-α-d-galactopyranoside (pNPGal) followed by galacto-oligosaccharides and could act slightly on galactomannans. The Km and catalytic efficiency (kcat/Km) of LrAgal36A for pNPGal were 0.33 mM and 1569.50 mM-1 s-1, respectively. LrAgal36A and GH5 β-mannanase from L. ramosa showed a significant synergistic effect on the degradation of locust bean gum (LBG), resulting in release more reducing sugars (1.56 folds) and galactose (7.6 folds) by simultaneous or sequential reactions. Due to its hydrolysis properties, LrAgal36A might have potential applications in the area of pulp biobleaching, feed and food processing.
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Md Tahir P, Liew WPP, Lee SY, Ang AF, Lee SH, Mohamed R, Halis R. Diversity and characterization of lignocellulolytic fungi isolated from oil palm empty fruit bunch, and identification of influencing factors of natural composting process. WASTE MANAGEMENT (NEW YORK, N.Y.) 2019; 100:128-137. [PMID: 31536923 DOI: 10.1016/j.wasman.2019.09.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2019] [Revised: 08/12/2019] [Accepted: 09/01/2019] [Indexed: 06/10/2023]
Abstract
Oil palm empty fruit bunch (EFB) is the most significant waste generated from the agricultural industry in Malaysia. Composting is one of the potential approaches to utilize EFB. However, composting of EFB is a time-consuming process, thus impractical for industrial application. The composting process can be shortened by introducing competent fungi into an optimal EFB composting system. This study was conducted to isolate and identify competent fungi that can naturally compost EFB. Samplings were carried out at eight different time points over a 20-weeks experimental period. The physical properties of EFB samples such as pH, residual oil content, and moisture content were measured and the EFB composting process that was indicated by the contents of cellulose, hemicellulose, and lignin were assessed. The fungal growth, distribution, and lignocellulolytic enzyme activities were evaluated. The results indicated that the changes in physical properties of EFB were correlated to the fungal growth. The gradual reduction in moisture content and residual oil, and the increment in pH values in EFB samples throughout the experimental period resulted in reduced fungal growth and diversity. Such phenomenon delayed EFB composting process as revealed by the changes in EFB lignin, hemicellulose, and cellulose contents. The most dominant and resilient fungi (Lichtheimia ramosa and Neurospora crassa) survived up to 16 weeks and were capable of producing various lignocellulolytic enzymes. Further understanding of these factors that would contribute to effective EFB composting could be useful for future industrial applications.
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Affiliation(s)
- Paridah Md Tahir
- Institute of Tropical Forestry and Forest Products, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia; Department of Forest Production, Faculty of Forestry, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia.
| | - Winnie-Pui-Pui Liew
- Institute of Tropical Forestry and Forest Products, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia; Department of Nutrition and Dietetics, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
| | - Shiou Yih Lee
- Department of Forest Management, Faculty of Forestry, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
| | - Aik Fei Ang
- Department of Forest Production, Faculty of Forestry, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia.
| | - Seng Hua Lee
- Institute of Tropical Forestry and Forest Products, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
| | - Rozi Mohamed
- Department of Forest Management, Faculty of Forestry, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
| | - Rasmina Halis
- Department of Forest Production, Faculty of Forestry, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
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Martins EDS, Gomes E, da Silva R, Junior RB. Production of cellulases by Thermomucor indicae-seudaticae: characterization of a thermophilic β-glucosidase. Prep Biochem Biotechnol 2019; 49:830-836. [DOI: 10.1080/10826068.2019.1625060] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
| | - Eleni Gomes
- Laboratório de Bioquímica e Microbiologia Aplicada, Universidade Estadual Paulista, São José do Rio Preto, Brasil
| | - Roberto da Silva
- Laboratório de Bioquímica e Microbiologia Aplicada, Universidade Estadual Paulista, São José do Rio Preto, Brasil
| | - Rodolfo Bizarria Junior
- Laboratório de Ecologia e Sistemática de Fungos, Universidade Estadual Paulista, Rio Claro, Brasil
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Xie J, He Z, Wang Z, Wang B, Pan L. Efficient expression of a novel thermophilic fungal β-mannosidase from Lichtheimia ramosa with broad-range pH stability and its synergistic hydrolysis of locust bean gum. J Biosci Bioeng 2019; 128:416-423. [PMID: 31130335 DOI: 10.1016/j.jbiosc.2019.04.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2019] [Revised: 03/28/2019] [Accepted: 04/10/2019] [Indexed: 10/26/2022]
Abstract
β-Mannosidase (EC 3.2.1.25) is an exoglycosidase specific for the hydrolysis of terminal β-1,4-glycosidic linkage in mannan which can be applied in the food manufacture, animal feed, bioethanol making and coffee extraction industries. A novel β-mannosidase gene (Lrman5A) from Lichtheimia ramosa was synthesized and recombinantly expressed in Pichia pastoris X33. Lrman5A encodes 444 amino acids with a calculated molecular mass of 51.0 kDa which shares the highest identity (73%) with the β-mannosidase from Rhizomucor miehei. Purified recombinant Lrman5A showed the maximal activity at pH 6.0 and 65°C, had broad-range pH stability (retaining >65% activity after incubation at pH 3.0-8.5 at 37°C for 24 h), and was highly thermostable (retaining >80% activity after incubation at 65°C for 10 min). The specific activity, and Km of Lrman5A was 17.5 U/mg and 1.377 mM, respectively. Lrman5A and GH5 β-mannanase displayed significant synergistic effects on the degradation of locust bean gum (LBG) and released more mannose (up to 2.89 folds) by simultaneous or sequential addition. Due to its hydrolytic properties, Lrman5A may have potential applications in the area of bioenergy, feed and food processing.
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Affiliation(s)
- Jianhua Xie
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou, Guangdong 510006, People's Republic of China; AsiaPac (Dongguan) Bio-Technology Co., Ltd., Songshan Lake National Hi-tech Industrial Development Zone, No. 3, North Industrial Road, Dongguan City, Guangdong 523808, People's Republic of China
| | - Zhimei He
- AsiaPac (Dongguan) Bio-Technology Co., Ltd., Songshan Lake National Hi-tech Industrial Development Zone, No. 3, North Industrial Road, Dongguan City, Guangdong 523808, People's Republic of China
| | - Zheng Wang
- AsiaPac (Dongguan) Bio-Technology Co., Ltd., Songshan Lake National Hi-tech Industrial Development Zone, No. 3, North Industrial Road, Dongguan City, Guangdong 523808, People's Republic of China
| | - Bin Wang
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou, Guangdong 510006, People's Republic of China; Guangdong Provincial Key Laboratory of Fermentation and Enzyme Engineering, Guangzhou, Guangdong 510006, People's Republic of China.
| | - Li Pan
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou, Guangdong 510006, People's Republic of China; Guangdong Provincial Key Laboratory of Fermentation and Enzyme Engineering, Guangzhou, Guangdong 510006, People's Republic of China
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13
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Costa ACD, Cavalheiro GF, Vieira ERDQ, Gandra JR, Goes RHDTEBD, Paz MFD, Fonseca GG, Leite RSR. Catalytic properties of xylanases produced by Trichoderma piluliferum and Trichoderma viride and their application as additives in bovine feeding. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2019. [DOI: 10.1016/j.bcab.2019.101161] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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14
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Morais TPD, Barbosa PMG, Garcia NFL, Rosa-Garzon NGD, Fonseca GG, Paz MFD, Cabral H, Leite RSR. Catalytic and thermodynamic properties of β-glucosidases produced by Lichtheimia corymbifera and Byssochlamys spectabilis. Prep Biochem Biotechnol 2018; 48:777-786. [DOI: 10.1080/10826068.2018.1509083] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Tobias Pereira de Morais
- Laboratory of Enzymology and Fermentation Processes, Faculty of Biological and Environmental Sciences, Federal University of Grande Dourados (FCBA/UFGD), Dourados, MS, Brazil
| | - Paula Mirella Gomes Barbosa
- Laboratory of Enzymology and Fermentation Processes, Faculty of Biological and Environmental Sciences, Federal University of Grande Dourados (FCBA/UFGD), Dourados, MS, Brazil
| | - Nayara Fernanda Lisboa Garcia
- Laboratory of Enzymology and Fermentation Processes, Faculty of Biological and Environmental Sciences, Federal University of Grande Dourados (FCBA/UFGD), Dourados, MS, Brazil
| | - Nathália Gonsales da Rosa-Garzon
- Department of Pharmaceutical Sciences, Faculty of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP Brazil
| | - Gustavo Graciano Fonseca
- Laboratory of Bioengineering, Faculty of Biological and Environmental Sciences, Federal University of Grande Dourados (FCBA/UFGD), Dourados, MS, Brazil
| | - Marcelo Fossa da Paz
- Laboratory of Enzymology and Fermentation Processes, Faculty of Biological and Environmental Sciences, Federal University of Grande Dourados (FCBA/UFGD), Dourados, MS, Brazil
| | - Hamilton Cabral
- Department of Pharmaceutical Sciences, Faculty of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP Brazil
| | - Rodrigo Simões Ribeiro Leite
- Laboratory of Enzymology and Fermentation Processes, Faculty of Biological and Environmental Sciences, Federal University of Grande Dourados (FCBA/UFGD), Dourados, MS, Brazil
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15
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Identification of a novel hydrogen producing bacteria from sugarcane bagasse waste. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2018. [DOI: 10.1016/j.bcab.2018.07.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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16
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Taxonomic identification of the thermotolerant and fast-growing fungus Lichtheimia ramosa H71D and biochemical characterization of the thermophilic xylanase LrXynA. AMB Express 2017; 7:194. [PMID: 29098440 PMCID: PMC5668220 DOI: 10.1186/s13568-017-0494-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Accepted: 10/26/2017] [Indexed: 11/12/2022] Open
Abstract
The zygomycete fungus Lichtheimia ramosa H71D, isolated from sugarcane bagasse compost, was identified by applying phylogenetic analysis based on the DNA sequence of the Internal Transcribed Spacer (ITS), and subsequent secondary structure analysis of ITS2. L. ramosa H71D was able to grow over a wide range of temperatures (25–45 °C), manifesting optimal growth at 37 °C. A 64 kDa xylanase (named LrXynA) was purified from the culture supernatant of L. ramosa H71D grown on 2% carboxymethylcellulose (CMC), as the only carbon source. LrXynA displayed optimal activity at pH 6 and temperature of 65 °C. The enzyme retained more than 50% of its maximal activity over a broad range of pH values (4.5–7.5). Enzyme half-life (t½) times at 55, 65 and 75 °C were 80, 25, and 8 min, respectively. LrXynA showed higher affinity (kM of 2.87 mg/mL) and catalytic efficiency (kcat/kM of 0.651 mg s/mL) towards Beechwood xylan in comparison to other substrates such as Birchwood xylan, Oat-spelt xylan, CMC, Avicel and Solka floc. The predominant final products from LrXynA-mediated hydrolysis of Beechwood xylan were xylobiose and xylotriose, suggesting that the enzyme is an endo-β-1,4 xylanase. Scanning electron microscopy (SEM) imaging of sugar cane bagasse (SCB) treated with LrXynA, alone or in combination with commercial cellulases, showed a positive effect on the hydrolysis of SCB. To our knowledge, this is the first report focusing on the biochemical and functional characterization of an endo-β-1,4 xylanase from the thermotolerant and fast-growing fungus Lichtheimia ramosa.
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Wu H, Zhang S, Ma Y, Zhou J, Luo H, Yang J. Comparison of microbial communities in the fermentation starter used to brew Xiaoqu liquor. JOURNAL OF THE INSTITUTE OF BREWING 2017. [DOI: 10.1002/jib.388] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Hechuan Wu
- Sichuan University of Science and Engineering; 180 Xueyuanjie, Huixinglu Zigong Sichuan 643000 China
- Sichuan Academy of Atomic Energy; Chengdu 610000 China
| | - Suyi Zhang
- Luzhou Laojiao Co.; Laojiaoguangchang, Nanguanglu Luzhou Sichuan 646000 China
| | - Yingying Ma
- Sichuan University of Science and Engineering; 180 Xueyuanjie, Huixinglu Zigong Sichuan 643000 China
| | - Jian Zhou
- Sichuan University of Science and Engineering; 180 Xueyuanjie, Huixinglu Zigong Sichuan 643000 China
| | - Huibo Luo
- Sichuan University of Science and Engineering; 180 Xueyuanjie, Huixinglu Zigong Sichuan 643000 China
| | - Jiangang Yang
- Sichuan University of Science and Engineering; 180 Xueyuanjie, Huixinglu Zigong Sichuan 643000 China
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Chung H, Lee N, Seo JA, Kim YS. Comparative analysis of nonvolatile and volatile metabolites in Lichtheimia ramosa cultivated in different growth media. Biosci Biotechnol Biochem 2017; 81:565-572. [DOI: 10.1080/09168451.2016.1256756] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Abstract
Lichtheimia ramosa is one of the predominant filamentous fungi in Korean traditional nuruk. The nonvolatile and volatile metabolites of L. ramosa cultivated in three growth media: complete medium (CM), potato dextrose broth (PDB), and sabouraud dextrose broth (SDB), were investigated and compared. Among nonvolatile metabolites, serine, lysine, and ornithine increased in CM and PDB cultivated with L. ramosa during the exponential phase. In addition, glucose level increased in CM whereas decreased in PDB and SDB. The major volatile metabolites in the extract samples were acetic acid, ethanol, 3-methyl-2-buten-1-ol, 2-phenylethanol, ethylacetate, 2-furaldehyde, 5-(hydroxymethyl)-2-furaldehyde, 2,3-dihydro-3,5,-dihydroxy-6-methyl-4H-pyran-4-one, and α-humulene. In particular, the levels of volatile metabolites related to makgeolli (e.g., acetic acid, ethanol, and ethyl acetate) were highest in extracts cultivated in CM. On the other hand, the level of 2-phenylethanol was relatively higher in PDB and SDB, possibly due to there being more phenylalanine present in the biomass sample in media.
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Affiliation(s)
- Hyun Chung
- Department of Food Science and Engineering, Ewha Womans University, Seoul, Korea
| | - NaKyeom Lee
- Department of Food Science and Engineering, Ewha Womans University, Seoul, Korea
| | - Jeong-Ah Seo
- School of Systems Biomedical Science, Soongsil University, Seoul, Korea
| | - Young-Suk Kim
- Department of Food Science and Engineering, Ewha Womans University, Seoul, Korea
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de Oliveira APA, Silvestre MA, Garcia NFL, Alves-Prado HF, Rodrigues A, da Paz MF, Fonseca GG, Leite RSR. Production and Catalytic Properties of Amylases from Lichtheimia ramosa and Thermoascus aurantiacus by Solid-State Fermentation. ScientificWorldJournal 2016; 2016:7323875. [PMID: 27413773 PMCID: PMC4931097 DOI: 10.1155/2016/7323875] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2016] [Revised: 05/11/2016] [Accepted: 05/31/2016] [Indexed: 11/18/2022] Open
Abstract
The present study compared the production and the catalytic properties of amylolytic enzymes obtained from the fungi Lichtheimia ramosa (mesophilic) and Thermoascus aurantiacus (thermophilic). The highest amylase production in both fungi was observed in wheat bran supplemented with nutrient solution (pH 4.0) after 96 hours of cultivation, reaching 417.2 U/g of dry substrate (or 41.72 U/mL) and 144.5 U/g of dry substrate (or 14.45 U/mL) for L. ramosa and T. aurantiacus, respectively. The enzymes showed higher catalytic activity at pH 6.0 at 60°C. The amylases produced by L. ramosa and T. aurantiacus were stable between pH 3.5-10.5 and pH 4.5-9.5, respectively. The amylase of L. ramosa was stable at 55°C after 1 hour of incubation, whereas that of T. aurantiacus maintained 60% of its original activity under the same conditions. Both enzymes were active in the presence of ethanol. The enzymes hydrolyzed starch from different sources, with the best results obtained with corn starch. The enzymatic complex produced by L. ramosa showed dextrinizing and saccharifying potential. The enzymatic extract produced by the fungus T. aurantiacus presented only saccharifying potential, releasing glucose monomers as the main hydrolysis product.
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Affiliation(s)
- Ana Paula Aguero de Oliveira
- Laboratory of Enzymology and Fermentation Processes, Faculty of Biological and Environmental Sciences, Federal University of Grande Dourados (FCBA/UFGD), Rodovia Dourados/Itahum, km 12, 79804-970 Dourados, MS, Brazil
| | - Maria Alice Silvestre
- Laboratory of Enzymology and Fermentation Processes, Faculty of Biological and Environmental Sciences, Federal University of Grande Dourados (FCBA/UFGD), Rodovia Dourados/Itahum, km 12, 79804-970 Dourados, MS, Brazil
| | - Nayara Fernanda Lisboa Garcia
- Laboratory of Enzymology and Fermentation Processes, Faculty of Biological and Environmental Sciences, Federal University of Grande Dourados (FCBA/UFGD), Rodovia Dourados/Itahum, km 12, 79804-970 Dourados, MS, Brazil
| | - Heloíza Ferreira Alves-Prado
- Faculty of Engineering, Department of Phytotechnology, Food Technology and Social Economy, São Paulo State University (FEIS/UNESP), Avenida Brasil, No. 56, 15385-000 Ilha Solteira, SP, Brazil
| | - André Rodrigues
- Laboratory of Fungal Ecology and Systematics, Biosciences Institute, Department of Biochemistry and Microbiology, São Paulo State University (IB/UNESP), Avenida 24A, No. 1515, 13506-900 Rio Claro, SP, Brazil
| | - Marcelo Fossa da Paz
- Laboratory of Enzymology and Fermentation Processes, Faculty of Biological and Environmental Sciences, Federal University of Grande Dourados (FCBA/UFGD), Rodovia Dourados/Itahum, km 12, 79804-970 Dourados, MS, Brazil
| | - Gustavo Graciano Fonseca
- Laboratory of Bioengineering, Faculty of Biological and Environmental Sciences, Federal University of Grande Dourados (FCBA/UFGD), Rodovia Dourados/Itahum, km 12, 79804-970 Dourados, MS, Brazil
| | - Rodrigo Simões Ribeiro Leite
- Laboratory of Enzymology and Fermentation Processes, Faculty of Biological and Environmental Sciences, Federal University of Grande Dourados (FCBA/UFGD), Rodovia Dourados/Itahum, km 12, 79804-970 Dourados, MS, Brazil
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Expression of novel glucose tolerant β-glucosidase on cell surface by Rhodotorula glutinis isolate. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2015. [DOI: 10.1016/j.bcab.2015.06.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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Garcia NFL, da Silva Santos FR, Gonçalves FA, da Paz MF, Fonseca GG, Leite RSR. Production of β-glucosidase on solid-state fermentation by Lichtheimia ramosa in agroindustrial residues: Characterization and catalytic properties of the enzymatic extract. ELECTRON J BIOTECHN 2015. [DOI: 10.1016/j.ejbt.2015.05.007] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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