Browsing by Author "Nuttabodee Viriyawattana"

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    Biodegradation of paraquat by the novel bacterial strain aeromonas Veronii NK67 from cassava fields in Thailand
    (EM International, 2014) Nuttabodee Viriyawattana; S. Surachat
    The herbicide paraquat residues in Cassava field have been shown to cause adverse human health effects and soil degradation, leading to decreased crop productivity. Bioremediation is the effective way to solve this problem. This study focused on selecting soil bacteria that are capable to degrade paraquai The 283 soil samples were collected from Cassava field in Nakhon Ratcha Sima provinces, because of paraquat is one of the most widely used chemical herbicides in this area. All 112 isolates have been isolated. Among them, there were 6 isolates tolerance to paraquat concentration 1 mM, including 4 and 2 strains of Clostridium spp. and Aeromonas spp., respectively. The isolates were further tested for their efficacy to degrade paraquat. The results showed that only two strains of Aeromonas spp. (strain NK 66 and MC 67) were able to degrade paraquat. It was found that levels of paraquat decreased to 4.9 ppm (24.36%) and 10.68 ppm (53.4%) after exposed to Aeromonas spp. Strain MC 66 and MC 67, respectively. Molecular Methods to Identify Aeromonas spp. strain NK 67 using PCR-amplified 16S rRNA genes sequencing were employed. Nucleotide sequence of 16S rRNA from Aeromonas spp. strain NK 67 was compared with nucleotide sequences from GenBank database by using BLAST program. The results showed that 99% similar to 16S rRNA from A. veronii strain ATCC 35624, according to the results of classification by Bergey's Manual of Systematic Bactedology Then it can be conclude that this bacteria is A. veronii N1C67 (JN880412). This is the first report that A. veronii exhibited high efficiency to degrade paraquat which can be further applied for remediation of paraquat in contaminated areas and going for commercial production. © Global Science Publications.
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    Effect of Heat Processing of Rubber Seed Kernel on In Vitro Rumen Biohydrogenation of Fatty Acids and Fermentation
    (MDPI, 2023) Nirawan Gunun; Metha Wanapat; Chatchai Kaewpila; Waroon Khota; Sineenart Polyorach; Anusorn Cherdthong; Rattikan Suwannasing; Pairote Patarapreecha; Piyawit Kesorn; Piyawan Intarapanich; Nuttabodee Viriyawattana; Pongsatorn Gunun; P. Gunun; Department of Animal Science, Faculty of Natural Resources, Rajamangala University of Technology Isan, Sakon Nakhon, Sakon Nakhon Campus, Phangkhon, 47160, Thailand; email: pongsatorn.gu@rmuti.ac.th
    The aim of this study was to assess the effect of rubber seed kernel heat processing on in vitro rumen biohydrogenation of fatty acids and fermentation. The experiment was conducted with a completely randomized design (CRD). The inclusion of RSK at 0% (CON) and 20% with different processing methods as follows: Raw rubber seed kernel (RAWR), roasted rubber seed kernel (ROR), microwave irradiated rubber seed kernel (MIR), and rubber seed kernel were heated in a hot air oven (RHO) in total mixed ration (TMR) diets. The hydrogen cyanide (HCN) was reduced using RSK heat methods. The heat processing of RSK had no effect on cumulative gas production at 96 h, the gas production from the insoluble fraction (b), or degradability (p > 0.05), whereas it reduced the gas production from the immediately soluble fraction (a) and constant rate of gas production for the insoluble fraction (c) (p < 0.01). The RSK processing methods did not influence ruminal pH, total volatile fatty acid (VFA), or VFA proportions (p > 0.05). RSK heat processing reduced ammonia-nitrogen (NH3-N) (p < 0.04) while increasing the bacterial population (p < 0.02). Heat treatment had no effect on linoleic acid (C18:2 cis-9,12 + tran-9,12) (p > 0.05). The RHO increases oleic acid (C18:1 cis-9 + tran-9) and linolenic acid (C18:3 cis-9,12,15) concentrations (p < 0.01). In conclusion, RHO reduced rumen biohydrogenation of unsaturated fatty acids (UFA), especially C18:3 and C18:1. © 2023 by the authors.
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    Effects of land-use change on the volume of water flow into the Mun Bon reservoir in Nakhon Ratchasima Province, Thailand
    (Applied and Natural Science Foundation, 2022) Surachat Sinworn; Nuttabodee Viriyawattana; N. Viriyawattana; Science and Technology, Suan Dusit University, Bangkok, Thailand; email: nutta_v@hotmail.com
    The land-use patterns in watershed areas in the Chorakhe Hin Sub-district, Khon Buri District, Nakhon Ratchasima Province, Thailand, have been found to change from forest areas. Different agricultural areas cause variations in the amount of water that flows from the stream into the reservoir, potentially leading to future water shortages. This study was conducted to explore the effects of land-use change on the volume of water flow into the Mun Bon Reservoir, Chorakhe Hin Sub-district, Khon Buri District, Nakhon Ratchasima Province, Thailand. The model analysis techniques, namely MarkovÕs Chain CLUES and SWAT, were employed to predict the effects of land-use patterns in the area of the upper Mun River on the volume of water flow into the Mun Bon reservoir. According to the predictions obtained based on the land-use models, forest areas may be converted into cassava plantations by 2029. When the comparative effects were considered, the normal volume of water flowing into the Mun Bon reservoir was found to be equivalent to 96 million cubic meter per year. The predicted volume before Christ (A.D.) 2029 is 30 million cubic meter. Accordingly, the water volume in the Mun Bon reservoir would be lower than that derived from the usual land-use patterns. © 2022, Applied and Natural Science Foundation. All rights reserved.
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    Performance improvement of the dry chemical-based fire extinguishers using nanocalcium silicate synthesised from biowaste
    (SAGE Publications Ltd, 2023) Nuttabodee Viriyawattana; Surachat Sinworn; S. Sinworn; Occupational Health and Safety Program, Faculty of Science and Technology, Suan Dusit University, Bangkok, Thailand; email: sinworn@hotmail.com
    Herein, we investigated nanocalcium silicate (nCa2SiO4) prepared from clam shells and rice husks for its utilisation as a chemical agent in a fire-extinguishing mixture comprising ABC dry powder. The fire-extinguishing performance was evaluated with Class A and B fires. The prepared mixture was compared with commercial mono-ammonium phosphate powder based on different parameters, namely extinguishing time, amount of extinguishing agent used, fire temperature reduction rate, powder coating on the fuel and a reburn incident. It was found that the mixture of nCa2SiO4 and ABC dry powder could extinguish Class A and B fires within 10.67 and 9 s, respectively, while commercial mono-ammonium phosphate powder required 11 and 11.33 s to extinguish Class A and B fires, respectively. Thus, the mixture of nCa2SiO4 and ABC dry powder was more effective and less consumed as compared to commercial mono-ammonium phosphate powder (Class B only). This study demonstrates the efficacy of nCa2SiO4 to improve the performance of dry chemical-based fire extinguishers. © The Author(s) 2023.