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Ditta ZM, Laohana P, Tanapongpisit N, Saenrang W, Boonlue S, Sata V, Baalousha M, Chindaprasirt P, Ekprasert J. Mechanical and self-healing properties of cement paste containing incinerated sugarcane filter cake and Lysinibacillus sp. WH bacteria. Sci Rep 2024; 14:6716. [PMID: 38509345 DOI: 10.1038/s41598-024-57492-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2023] [Accepted: 03/19/2024] [Indexed: 03/22/2024] Open
Abstract
Cement is the most widely used construction material due to its strength and affordability, but its production is energy intensive. Thus, the need to replace cement with widely available waste material such as incinerated black filter cake (IBFC) in order to reduce energy consumption and the associated CO2 emissions. However, because IBFC is a newly discovered cement replacement material, several parameters affecting the mechanical properties of IBFC-cement composite have not been thoroughly investigated yet. Thus, this work aims to investigate the impact of IBFC as a cement replacement and the addition of the calcifying bacterium Lysinibacillus sp. WH on the mechanical and self-healing properties of IBFC cement pastes. The properties of the IBFC-cement pastes were assessed by determining compressive strength, permeable void, water absorption, cement hydration product, and self-healing property. Increases in IBFC replacement reduced the durability of the cement pastes. The addition of the strain WH to IBFC cement pastes, resulting in biocement, increased the strength of the IBFC-cement composite. A 20% IBFC cement-replacement was determined to be the ideal ratio for producing biocement in this study, with a lower void percentage and water absorption value. Adding strain WH decreases pore sizes, densifies the matrix in ≤ 20% IBFC biocement, and enhances the formation of calcium silicate hydrate (C-S-H) and AFm ettringite phases. Biogenic CaCO3 and C-S-H significantly increase IBFC composite strength, especially at ≤ 20% IBFC replacement. Moreover, IBFC-cement composites with strain WH exhibit self-healing properties, with bacteria precipitating CaCO3 crystals to bridge cracks within two weeks. Overall, this work provides an approach to produce a "green/sustainable" cement using biologically enabled self-healing characteristics.
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Affiliation(s)
- Zerlinda Mara Ditta
- Bioscience and Bioinnovation for Sustainability Program, Department of Integrated Science, Faculty of Science, Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Peerawat Laohana
- School of Physics, Institute of Science, Suranaree University of Technology, Nakhon Ratchasima, 30000, Thailand
- Center of Excellence in Advanced Functional Materials, School of Physics, Suranaree University of Technology, Nakhon Ratchasima, 30000, Thailand
| | - Nantawat Tanapongpisit
- School of Physics, Institute of Science, Suranaree University of Technology, Nakhon Ratchasima, 30000, Thailand
- Center of Excellence in Advanced Functional Materials, School of Physics, Suranaree University of Technology, Nakhon Ratchasima, 30000, Thailand
| | - Wittawat Saenrang
- School of Physics, Institute of Science, Suranaree University of Technology, Nakhon Ratchasima, 30000, Thailand
- Center of Excellence in Advanced Functional Materials, School of Physics, Suranaree University of Technology, Nakhon Ratchasima, 30000, Thailand
| | - Sophon Boonlue
- Department of Microbiology, Faculty of Science, Khon Kaen University, 123 Mitraparp Rd, Muang, Khon Kaen, 40002, Thailand
| | - Vanchai Sata
- Sustainable Infrastructure Research and Development Center, Faculty of Engineering, Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Mohammed Baalousha
- Department of Environmental Health Sciences, Center for Environmental Nanoscience and Risks, Arnold School of Public Health, University of South Carolina, 921 Assembly Street, Columbia, SC, 29208, USA
| | - Prinya Chindaprasirt
- Sustainable Infrastructure Research and Development Center, Faculty of Engineering, Khon Kaen University, Khon Kaen, 40002, Thailand
- Academy of Science, Royal Society of Thailand, Dusit, Bangkok, Thailand
| | - Jindarat Ekprasert
- Department of Microbiology, Faculty of Science, Khon Kaen University, 123 Mitraparp Rd, Muang, Khon Kaen, 40002, Thailand.
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Ekprasert J, Nakhonthong N, Sata V, Chainakun P. Investigating the effects of superplasticizer and recycled plastics on the compressive strength of cementitious composites using neural networks. Heliyon 2023; 9:e21798. [PMID: 38027948 PMCID: PMC10660538 DOI: 10.1016/j.heliyon.2023.e21798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 10/25/2023] [Accepted: 10/28/2023] [Indexed: 12/01/2023] Open
Abstract
The potential application of neural network (NN) models to estimate the compressive strength (C S ) of cementitious composites under a variety of experimental settings and cement mixes was investigated. The data were extensively collected from previous literature, and the bootstrap resampling tests were applied to estimate the statistics of the parameter correlations. We find that the NN model that involves the coarse and fine natural aggregates (C A and F A ), superplasticizer (S P ) and recycled plastics (R P ) as the features can accurately predict the C S (R2 ∼ 0.9), without the need to specify the type of S P and the structure of R P in advance. The developed NN model holds promise for revealing the global dependency of C S on these parameters. It suggested that increasing 100 kg/m3 of C A could increase C S by ∼4 MPa, but the usage of C A more than 700 kg/m3 could negatively affect C S . How the C S varying with F A is apparently nonlinear. Within the optimum limit, adding 1 kg/m3 of S P could enhance the C S by ∼2 MPa. Contrarily, additional 1 kg/m3 of R P results in a decrease of ∼0.2 MPa of C S . The mixture-type independent models developed here would broaden our understanding of the global influential-sensitivity among these variables and help save cost and time in the industrial applications.
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Affiliation(s)
- Jindarat Ekprasert
- Department of Microbiology, Faculty of Science, Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Natthagrittha Nakhonthong
- School of Physics, Institute of Science, Suranaree University of Technology, Nakhon Ratchasima, 30000, Thailand
| | - Vanchai Sata
- Sustainable Infrastructure Research and Development Center, Department of Civil Engineering, Faculty of Engineering, Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Poemwai Chainakun
- School of Physics, Institute of Science, Suranaree University of Technology, Nakhon Ratchasima, 30000, Thailand
- Center of Excellence in High Energy Physics and Astrophysics, Suranaree University of Technology, Nakhon Ratchasima, 30000, Thailand
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Gateta T, Nacoon S, Seemakram W, Ekprasert J, Theerakulpisut P, Sanitchon J, Suwannarach N, Boonlue S. The Potential of Endophytic Fungi for Enhancing the Growth and Accumulation of Phenolic Compounds and Anthocyanin in Maled Phai Rice ( Oryza sativa L.). J Fungi (Basel) 2023; 9:937. [PMID: 37755044 PMCID: PMC10532753 DOI: 10.3390/jof9090937] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 09/11/2023] [Accepted: 09/14/2023] [Indexed: 09/28/2023] Open
Abstract
Rice (Oryza sativa L.) is one of the most popular cereal crops, being consumed by almost half of the world's population. Among several cultivars widely distributed in Thailand, Maled Phai is a Thai pigmented-upland rice with exceptionally high nutritional value and high demand in the local Thai market. This study aimed to investigate the feasibility of producing plant growth-promoting properties (PGP) and enhancing the accumulation of phytochemicals in Maled Phai rice seeds of endophytic fungi isolated from upland black rice. Among a total of 56 isolates, the 4 most effective PGP isolates were identified as Trichoderma zelobreve PBMP16, Talaromyces pinophilus PBMP28, Aspergillus flavus KKMP34, and Trichoderma sp. PBMP4 based on their morphological characteristics and multigene (ITS, rpb2, tef-1, CaM, and BenA) phylogenetic analyses. These four endophytic fungi could promote plant growth parameters under greenhouse conditions. Outstandingly, upland rice inoculated with Tr. zelobreve PBMP16 had a significant increase in total seed weight, root length, phenolic compounds, anthocyanin, antioxidants, and N uptake, which were higher than those of the noninoculated control, and even better than the chemical fertilizer. Overall, this report shows that endophytic fungi efficiently promoted growth and increased the phenolic compounds, anthocyanin, and antioxidants of Maled Phai rice.
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Affiliation(s)
- Thanawan Gateta
- Department of Microbiology, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand; (T.G.); (S.N.); (W.S.); (J.E.)
| | - Sabaiporn Nacoon
- Department of Microbiology, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand; (T.G.); (S.N.); (W.S.); (J.E.)
| | - Wasan Seemakram
- Department of Microbiology, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand; (T.G.); (S.N.); (W.S.); (J.E.)
| | - Jindarat Ekprasert
- Department of Microbiology, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand; (T.G.); (S.N.); (W.S.); (J.E.)
| | - Piyada Theerakulpisut
- Department of Biology, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand;
- Salt-Tolerant Rice Research Group, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Jirawat Sanitchon
- Department of Agronomy, Faculty of Agriculture, Khon Kaen University, Khon Kaen 40002, Thailand;
| | - Nakarin Suwannarach
- Center of Excellence in Microbial Diversity and Sustainable Utilization, Chiang Mai University, Chiang Mai 50200, Thailand;
| | - Sophon Boonlue
- Department of Microbiology, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand; (T.G.); (S.N.); (W.S.); (J.E.)
- Salt-Tolerant Rice Research Group, Khon Kaen University, Khon Kaen 40002, Thailand
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Nacoon S, Seemakram W, Ekprasert J, Jogloy S, Kuyper TW, Mongkolthanaruk W, Riddech N, Somdee T, Boonlue S. Promoting growth and production of sunchoke ( Helianthus tuberosus) by co-inoculation with phosphate solubilizing bacteria and arbuscular mycorrhizal fungi under drought. Front Plant Sci 2022; 13:1022319. [PMID: 36388606 PMCID: PMC9660246 DOI: 10.3389/fpls.2022.1022319] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Accepted: 10/10/2022] [Indexed: 06/04/2023]
Abstract
Due to different functions of phosphate solubilizing bacteria (PSB) and arbuscular mycorrhizal fungi (AMF), their potential synergistic effects on enhancing plant growth and yield are worth investigating, especially under adverse conditions. This work focused on the isolation of PSB and characterization for their plant growth promoting properties under drought. The most efficient P solubilizing bacterium was isolated and identified as Burkholderia vietnamiensis strain KKUT8-1. Then, a factorial experiment on the performance of sunchoke (Helianthus tuberosus) was set up with four factors, viz., PSB (presence or absence of KKUT8-1), AMF (presence or absence of Rhizophagus aggregatus), rock phosphate (RP; added or not) and moisture (well-watered (WW) or drought (DS) conditions). Sunchoke performance was enhanced by the presence of AMF, whereas addition of PSB had a positive effect on SPAD values and inulin concentration. Drought reduced plant performance, while addition of RP reduced photosynthetic rate. There was little evidence for synergistic effects between PSB and AMF, except for SPAD values and inulin concentration. Plants that were co-inoculated with AMF and PSB had highest SPAD value, shoot diameter, leaf area, leaf number, chlorophyll concentration, plant biomass, tuber production, root growth and total soluble sugar concentration. Co-inoculated plants also had increased plant water status, reduced electrolyte leakage, and reduced malondialdehyde and proline concentration. Strain KKUT8-1 is the first strain of B. vietnamiensis capable of promoting growth and yield of sunchoke. Enhanced production of sunchoke by a combination of AMF and PSB was much better than the application of RP. Our finding offers an opportunity to develop combinations of biological inoculants for increasing the growth and production of sunchoke under drought in the future.
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Affiliation(s)
- Sabaiporn Nacoon
- Department of Microbiology, Faculty of Science, Khon Kaen University, Khon Kaen, Thailand
| | - Wasan Seemakram
- Department of Microbiology, Faculty of Science, Khon Kaen University, Khon Kaen, Thailand
| | - Jindarat Ekprasert
- Department of Microbiology, Faculty of Science, Khon Kaen University, Khon Kaen, Thailand
| | - Sanun Jogloy
- Department of Agronomy, Faculty of Agriculture, Khon Kaen University, Khon Kaen, Thailand
| | - Thomas W. Kuyper
- Soil Biology Group, Wageningen University & Research, Wageningen, Netherlands
| | - Wiyada Mongkolthanaruk
- Department of Microbiology, Faculty of Science, Khon Kaen University, Khon Kaen, Thailand
| | - Nuntavun Riddech
- Department of Microbiology, Faculty of Science, Khon Kaen University, Khon Kaen, Thailand
| | - Theerasak Somdee
- Department of Microbiology, Faculty of Science, Khon Kaen University, Khon Kaen, Thailand
| | - Sophon Boonlue
- Department of Microbiology, Faculty of Science, Khon Kaen University, Khon Kaen, Thailand
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Seemakram W, Paluka J, Suebrasri T, Lapjit C, Kanokmedhakul S, Kuyper TW, Ekprasert J, Boonlue S. Enhancement of growth and Cannabinoids content of hemp ( Cannabis sativa) using arbuscular mycorrhizal fungi. Front Plant Sci 2022; 13:845794. [PMID: 35958223 PMCID: PMC9360772 DOI: 10.3389/fpls.2022.845794] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Accepted: 07/08/2022] [Indexed: 06/15/2023]
Abstract
This study aimed to investigate the efficiency of arbuscular mycorrhizal fungi (AMF) to promote growth and cannabinoid yield of Cannabis sativa KKU05. A completely randomized design (CRD) was conducted with six replications for 60 days. Two different species of AMF, Rhizophagus prolifer PC2-2 and R. aggregatus BM-3 g3 were selected as inocula and compared with two non-mycorrhizal controls, one without synthetic fertilizer and one with synthetic NPK fertilizer. The unfertilized non-mycorrhizal plants had the lowest performance, whereas plants inoculated with R. aggregatus BM-3 g3 performed best, both in terms of plant biomass and concentrations of CBD and THC. There were no significant differences in plant biomass and cannabinoid concentrations between non-mycorrhizal plants that received synthetic fertilizer and mycorrhizal plants with inoculum of R. prolifer PC2-2. Our data demonstrate the great potential for cannabis cultivation without risking deterioration of soil structure, such as soil hardening and increased acidity, which might be induced by long-term use of synthetic fertilizer.
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Affiliation(s)
- Wasan Seemakram
- Department of Microbiology, Faculty of Science, Khon Kaen University, Khon Kaen, Thailand
| | - Jakkapat Paluka
- Natural Products Research Unit, Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Khon Kaen University, Khon Kaen, Thailand
| | - Thanapat Suebrasri
- Department of Medical Science, Faculty of Allied Health Sciences, Nakhon Ratchasima, Thailand
| | - Chanon Lapjit
- Department of Horticulture, Faculty of Agriculture, Khon Kaen University, Khon Kaen, Thailand
- Cannabis Research Institute, Khon Kaen University, Khon Kaen, Thailand
| | - Somdej Kanokmedhakul
- Natural Products Research Unit, Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Khon Kaen University, Khon Kaen, Thailand
| | - Thomas W. Kuyper
- Soil Biology Group, Wageningen University and Research, Wageningen, Netherlands
| | - Jindarat Ekprasert
- Department of Microbiology, Faculty of Science, Khon Kaen University, Khon Kaen, Thailand
| | - Sophon Boonlue
- Department of Microbiology, Faculty of Science, Khon Kaen University, Khon Kaen, Thailand
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Ekprasert J, Pongtharangkul T, Chainakun P, Fongkaew I, Khanthasombat K, Kamngam R, Boonsuan W, Ditta ZM, Seemakram W, Boonlue S. Kinetic model of a newly-isolated Lysinibacillus sp. strain YL and elastic properties of its biogenic CaCO 3 towards biocement application. Biotechnol J 2021; 17:e2100124. [PMID: 34592060 DOI: 10.1002/biot.202100124] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Revised: 09/27/2021] [Accepted: 09/27/2021] [Indexed: 12/17/2022]
Abstract
BACKGROUND Biocement, calcifying bacteria-incorporated cement, offers an environmentally-friendly way to increase the cement lifespan. This work aimed to investigate the potential use of Lysinibacillus sp. strain YL towards biocement application in both theoretical and experimental ways. METHODS AND RESULTS Strain YL was grown using calcium acetate (Ca(C2 H3 O2 )2 ), calcium chloride (CaCl2 ) and calcium nitrate (Ca(NO3 )2 ). Maximum bacterial growth of ~0.09 hr-1 and the highest amount of CaCO3 precipitation of ~8.0 g/L were obtained when using Ca(C2 H3 O2 )2 . The SEM and XRD results confirmed that biogenic CaCO3 were calcites. The bulk, Young's and shear moduli of biogenic CaCO3 calculated via the VRH approximation were ~1.5-2.3 times larger than those of ordinary Portland cement. The Poisson's ratio was 0.382 and negative in some directions, suggesting its ductility and auxetic behaviors. The new model was developed to explain the growth kinetic of strain YL in the presence of Ca(C2 H3 O2 )2 , whose concentration was optimized for biocement experiments. Strain YL could increase the compressive strength of cement up to ~50% higher than that of the uninoculated cement. CONCLUSION Strain YL is a promising candidate for biocement applications. This work represents the trials of experiments and models allowing quantitatively comparison with large-scale production in the future.
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Affiliation(s)
- Jindarat Ekprasert
- Department of Microbiology, Faculty of Science, Khon Kaen University, Khon Kaen, Thailand
| | | | - Poemwai Chainakun
- School of Physics, Institute of Science, Suranaree University of Technology, Nakhon Ratchasima, Thailand
| | - Ittipon Fongkaew
- School of Physics, Institute of Science, Suranaree University of Technology, Nakhon Ratchasima, Thailand.,Center of Excellence in Advanced Functional Materials, School of Physics, Suranaree University of Technology, Nakhon Ratchasima, Thailand
| | - Kamonwan Khanthasombat
- School of Physics, Institute of Science, Suranaree University of Technology, Nakhon Ratchasima, Thailand
| | - Rungtiwa Kamngam
- Department of Microbiology, Faculty of Science, Khon Kaen University, Khon Kaen, Thailand
| | - Wachiraya Boonsuan
- Department of Microbiology, Faculty of Science, Khon Kaen University, Khon Kaen, Thailand
| | - Zerlinda Mara Ditta
- Biological Science Program, Faculty of Science, Khon Kaen University, Khon Kaen, Thailand
| | - Wasan Seemakram
- Department of Microbiology, Faculty of Science, Khon Kaen University, Khon Kaen, Thailand
| | - Sophon Boonlue
- Department of Microbiology, Faculty of Science, Khon Kaen University, Khon Kaen, Thailand
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Nacoon S, Jogloy S, Riddech N, Mongkolthanaruk W, Ekprasert J, Cooper J, Boonlue S. Combination of arbuscular mycorrhizal fungi and phosphate solubilizing bacteria on growth and production of Helianthus tuberosus under field condition. Sci Rep 2021; 11:6501. [PMID: 33753844 PMCID: PMC7985308 DOI: 10.1038/s41598-021-86042-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Accepted: 03/09/2021] [Indexed: 11/10/2022] Open
Abstract
In this work, the effects of co-inoculation between an arbuscular mycorrhizal fungus (AMF) and a phosphate solubilizing bacteria (PSB) to promote the growth and production of sunchoke under field condition were investigated during 2016 and 2017. Four treatments were set up as follows: plants without inoculation, with AMF inoculation, with PSB inoculation and with co-inoculation of PSB and AMF. The results showed the presence of PSB and AMF colonization at the harvest stage in both years. This suggested the survival of PSB and successful AMF colonization throughout the experiments. According to correlation analysis, PSB positively affected AMF spore density and colonization rate. Also, both AMF and PSB positively correlated with growth and production of sunchoke. Co-inoculation could enhance various plant parameters. However, better results in 2016 were found in co-inoculation treatment, while AMF inoculation performed the best in 2017. All of these results suggested that our AMF and PSB could effectively promote growth and production of sunchoke under field conditions. Such effects were varied due to different environmental conditions each year. Note that this is the first study showing successful co-inoculation of AMF and PSB for promoting growth and yield of sunchoke in the real cultivation fields.
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Affiliation(s)
- Sabaiporn Nacoon
- Department of Microbiology, Faculty of Science, Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Sanun Jogloy
- Department of Agronomy, Faculty of Agriculture, Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Nuntavun Riddech
- Department of Microbiology, Faculty of Science, Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Wiyada Mongkolthanaruk
- Department of Microbiology, Faculty of Science, Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Jindarat Ekprasert
- Department of Microbiology, Faculty of Science, Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Julia Cooper
- School of Natural and Environmental Sciences, Agriculture Building, Newcastle University, Newcastle Upon Tyne, NE1 7RU, UK
| | - Sophon Boonlue
- Department of Microbiology, Faculty of Science, Khon Kaen University, Khon Kaen, 40002, Thailand.
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Seemakram W, Boonrung S, Aimi T, Ekprasert J, Lumyong S, Boonlue S. Purification, characterization and partial amino acid sequences of thermo-alkali-stable and mercury ion-tolerant xylanase from Thermomyces dupontii KKU-CLD-E2-3. Sci Rep 2020; 10:21663. [PMID: 33303944 PMCID: PMC7730141 DOI: 10.1038/s41598-020-78670-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Accepted: 11/23/2020] [Indexed: 01/23/2023] Open
Abstract
We investigated the properties of the low molecular weight thermo-alkali-stable and mercury ion-tolerant xylanase production from Thermomyces dupontii KKU-CLD-E2-3. The xylanase was purified to homogeneity by ammonium sulfate, Sephadex G-100 and DEAE-cellulose column chromatography which resulted 27.92-fold purification specific activity of 56.19 U/mg protein and a recovery yield of 2.01%. The purified xylanase showed a molecular weight of 25 kDa by SDS-PAGE and the partial peptide sequence showed maximum sequence homology to the endo-1,4-β-xylanase. The optimum temperature and pH for its activity were 80 °C and pH 9.0, respectively. Furthermore, the purified xylanase can maintain more than 75% of the original activity in pH range of 7.0-10.0 after incubation at 4 °C for 24 h, and can still maintain more than 70% of original activity after incubating at 70 °C for 90 min. Our purified xylanase was activated by Cu2+ and Hg2+ up to 277% and 235% of initial activity, respectively but inhibited by Co2+, Ag+ and SDS at a concentration of 5 mM. The Km and Vmax values of beechwood xylan were 3.38 mg/mL and 625 µmol/min/mg, respectively. Furthermore, our xylanase had activity specifically to xylan-containing substrates and hydrolyzed beechwood xylan, and the end products mainly were xylotetraose and xylobiose. The results suggested that our purified xylanase has potential to use for pulp bleaching in the pulp and paper industry.
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Affiliation(s)
- Wasan Seemakram
- Graduate School, Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Santhaya Boonrung
- Biology Program, Faculty of Science, Buriram Rajabhat University, Buriram, 31000, Thailand
| | - Tadanori Aimi
- Department of Biochemistry and Biotechnology, Faculty of Agriculture, Tottori University, Tottori, 680-8553, Japan
| | - Jindarat Ekprasert
- Department of Microbiology, Faculty of Science, Khon Kaen University, Khon Kaen, 40002, Thailand
- Protein and Proteomics Research Center for Commercial and Industrial Purposes (ProCCI), Faculty of Science, Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Saisamorn Lumyong
- Department of Biology, Faculty of Science, Chiang Mai Univertity, Chiang Mai, 50200, Thailand
- Research Center of Microbial Diversity and Sustainable Utilization, Chiang Mai University, Chiang Mai, 50200, Thailand
- Academy of Science, The Royal Society of Thailand, Bangkok, 10300, Thailand
| | - Sophon Boonlue
- Department of Microbiology, Faculty of Science, Khon Kaen University, Khon Kaen, 40002, Thailand.
- Protein and Proteomics Research Center for Commercial and Industrial Purposes (ProCCI), Faculty of Science, Khon Kaen University, Khon Kaen, 40002, Thailand.
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Ekprasert J, Fongkaew I, Chainakun P, Kamngam R, Boonsuan W. Investigating mechanical properties and biocement application of CaCO 3 precipitated by a newly-isolated Lysinibacillus sp. WH using artificial neural networks. Sci Rep 2020; 10:16137. [PMID: 32999379 PMCID: PMC7527966 DOI: 10.1038/s41598-020-73217-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2020] [Accepted: 09/14/2020] [Indexed: 11/16/2022] Open
Abstract
A newly-isolated Lysinibacillus sp. strain WH could precipitate CaCO3 using calcium acetate (Ca(C2H3O2)2), calcium chloride (CaCl2) and calcium nitrate (Ca(NO3)2) via non-ureolytic processes. We developed an algorithm to determine CaCO3 crystal structures by fitting the simulated XRD spectra to the experimental data using the artificial neural networks (ANNs). The biogenic CaCO3 crystals when using CaCl2 and Ca(NO3)2 are trigonal calcites with space group R3c, while those when using Ca(C2H3O2)2 are hexagonal vaterites with space group P6522. Their elastic properties are derived from the Voigt–Reuss–Hill (VRH) approximation. The bulk, Young's, and shear moduli of biogenic calcite are 77.812, 88.197, and 33.645 GPa, respectively, while those of vaterite are 67.082, 68.644, 25.818 GPa, respectively. Their Poisson’s ratios are ~ 0.3–0.33, suggesting the ductility behavior of our crystals. These elastic values are comparable to those found in limestone cement, but are significantly larger than those of Portland cement. Based on the biocement experiment, the maximum increase in the compressive strength of Portland cement (27.4%) was found when Ca(NO3)2 was used. An increased strength of 26.1% was also found when Ca(C2H3O2)2 was used, implying the transformation of less-durable vaterite to higher-durable calcite. CaCO3 produced by strain WH has a potential to strengthen Portland cement-based materials.
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Affiliation(s)
- Jindarat Ekprasert
- Department of Microbiology, Faculty of Science, Khon Kaen University, 123 Mitraparp Road, Muang, Khon Kaen, 40002, Thailand.
| | - Ittipon Fongkaew
- School of Physics, Institute of Science, Suranaree University of Technology, Nakhon Ratchasima, 30000, Thailand
| | - Poemwai Chainakun
- School of Physics, Institute of Science, Suranaree University of Technology, Nakhon Ratchasima, 30000, Thailand
| | - Rungtiwa Kamngam
- Department of Microbiology, Faculty of Science, Khon Kaen University, 123 Mitraparp Road, Muang, Khon Kaen, 40002, Thailand
| | - Wachiraya Boonsuan
- Department of Microbiology, Faculty of Science, Khon Kaen University, 123 Mitraparp Road, Muang, Khon Kaen, 40002, Thailand
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Somboon C, Boonrung S, Katekaew S, Ekprasert J, Aimi T, Boonlue S. Purification and characterization of low molecular weight alkali stable xylanase from Neosartorya spinosa UZ-2-11. MYCOSCIENCE 2020. [DOI: 10.1016/j.myc.2020.01.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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