Chutipaijit, Sutee

Preferred name

Chutipaijit, Sutee

Alternative Name

Chutipaijit, S.

Main Affiliation

Integrated Innovative Technology

sutee.ch@kmitl.ac.th

Now showing 1 - 7 of 7

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X-ray characterization, structural analysis, antibacterial activity, and self-cleaning property of Cu-doped TiO2-SiO2 nanocomposite prepared by sonochemical process
(2024-12-01)
Mekprasart, Wanichaya
;
Songpanit, Maneerat
;
Sanyen, Thanyapa
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Samart, Sutichai
;
Chutipaijit, Sutee
TiO<inf>2</inf>-SiO<inf>2</inf> nanocomposites with different copper (Cu) precursor loadings were prepared by a one-step sonochemical process. The mole ratio of Cu precursor in TiO<inf>2</inf>-SiO<inf>2</inf> composite was varied at 0.004, 0.008, 0.020, and 0.040, respectively. The specific X-ray characterization techniques on crystalline structure, chemical composition, and chemical states of Cu-doped TiO<inf>2</inf>-SiO<inf>2</inf> composite were carried out by X-ray diffraction technique (XRD), X-ray fluorescence (XRF), and X-ray photoelectron spectroscopy (XPS), respectively. Surface morphology and chemical bonding of Cu-doped TiO<inf>2</inf>-SiO<inf>2</inf> composite were monitored by field emission scanning electron microscope (FE-SEM) and Fourier transform infrared spectrophotometer (FTIR). For antibacterial properties, the inhibition zone of antimicrobial activity was investigated by varying amounts of Cu precursors in the TiO<inf>2</inf>-SiO<inf>2</inf> composite. After that, Cu-doped TiO<inf>2</inf>-SiO<inf>2</inf> composite powder with different Cu precursor ratios was mixed in PMMA solution and deposited on glass slides to study the optical property and hydrophilicity by UV-VIS-NIR spectrophotometer and contact angle method. XRD patterns of Cu-doped TiO<inf>2</inf>-SiO<inf>2</inf> nanocomposites show the formation of the main TiO<inf>2</inf> anatase phase with the ultrafine particles observed by FE-SEM images. FT-IR spectra of the composites are assigned to the prominent peaks of the Ti-O-Ti and Ti-O-Si bond relating to the TiO<inf>2</inf>-SiO<inf>2</inf> host matrix. Meanwhile, TiO<inf>2</inf>-SiO<inf>2</inf> composites with Cu precursor at 0.004 mol ratio can significantly enhance the antibacterial activity with a large inhibition zone. The contact angle value of Cu-doped TiO<inf>2</inf>-SiO<inf>2</inf> nanocomposite film at 0.040 Cu precursor mole ratio in the TiO<inf>2</inf>-SiO<inf>2</inf> matrix resulted in the optimized composite ratio for achieving a hydrophilic surface on the substrate.
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Modifications of morphological and physiological characteristics of pigmented-rice seedlings by application of titanium dioxide nanoparticles
(2018-09-05)
Samart, Sutichai
;
Chutipaijit, Sutee
Nanomaterials or metal nanoparticles are considered as the agricultural applications with significant response-promoting influence. This research was focused on the influence of titanium dioxide nanoparticles (TiO<inf>2</inf> NPs) on morphological and physiological processes in pigmented-rice plants at seedling stage. A significant influence of TiO<inf>2</inf> NPs on the plant growth, photosynthetic pigment contents and antioxidant enzyme activities in rice seedlings was investigated. The results were also shown that pigmented-rice seedlings growing in TiO<inf>2</inf> NPs application significantly differed in the morphological and physiological responses when compared with the control plants. The results presented the plant height and dry weight was significantly affected by TiO<inf>2</inf> NPs. The results observed an increase in chlorophyll A, chlorophyll B, carotenoid contents and catalase, peroxidase enzyme activities in plant seedlings of TiO<inf>2</inf> NPs-treated plants which positive-corresponded with plant growth performances was found. TiO<inf>2</inf> NPs-treated seedlings that a high level of TiO<inf>2</inf> NPs application exhibited an increase in the plant growth, photosynthetic pigment contents and antioxidant enzyme activities. The amelioration effect of 800 mg L-1 of TiO<inf>2</inf> NPs application was shown the highest performances in morphological and physiological responses when compared with the other treatments. Investigation of the results suggests that the morphological and physiological responses due to changes in the plant growth, photosynthetic pigment content and antioxidant enzyme activity parameters may derive from the interaction between TiO<inf>2</inf> NPs and plant cells of pigmented-rice seedlings, which are known to play a role in plant development and productivity in the further study.
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Growth of pigmented rice (Oryza sativa L. Cv. Riceberry) exposed to ZnO nanoparticles
(2019-01-01)
Samart, Sutichai
;
Chutipaijit, Sutee
Exposure of plants to nanomaterials has been evaluated to the positive and negative effects on crop growth, metabolism, and productivity. In this research, application of zinc oxide (ZnO) nanoparticles was studied in pigmented rice (Oryza sativa L. cv. Riceberry). Riceberry plants were grown and irrigated for 60 days. After that, Riceberry plants were exposed to ZnO nanoparticles by treating them with 0, 200, 400 or 800 mg L-1 of ZnO nanoparticles. The plant heights, plant weights, numbers of panicles/clump, photosynthetic pigment contents, and antioxidant enzyme activities were determined. Results showed that 200 mg L-1 of ZnO nanoparticles induced the high enhancement of plant heights, plant weights, numbers of panicles/clump, total photosynthetic pigment contents, and antioxidant enzyme activities as compared to 400 mg L-1, 800 mg L-1 of ZnO nanoparticles and the control (0 mg L-1 of ZnO nanoparticles) treatments. Moreover, the contents of anthocyanin accumulation in the rice seeds exposed to ZnO nanoparticles were measured. The seeds of Riceberry plants exposed to 200 mg L-1 of ZnO nanoparticles exhibited higher the accumulation of anthocyanin contents than other treatments (0, 400 and 800 mg L-1 of ZnO nanoparticles). It was observed that the appropriation of ZnO nanoparticle concentrations may play a role in enhanced the plant growth, productivity and metabolite of Riceberry plants.
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Nanocarbon induced modifications in morpho-physiopgical characteristics in rice plants [oryza sativa l. cv. black jasmine rice (Hom-nin)]
(2020-01-01)
Samart, Sutichai
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Chutipaijit, Sutee
The aim of this research was to evaluate the potential application of nanocarbon in plant growth and physiological responses in rice plants. This research was designed to evaluate the effects of different concentration of nanocarbon (0-1,000 mg L-1) on growth characterizations and physiological parameters after 1-4 weeks of nanocarbon-treatment. Induction in the growth performances and contents of photosynthetic pigments (chlorophyll A, chlorophyll B and carotenoids), antioxidant enzyme activities (catalase and peroxidase) and flavonoids was observed in the rice plants after treated with nanocarbon. The results showed that nanocarbon promoted the plant growth in rice plants cv. Black jasmine rice or Hom-nin by increasing the shoot lengths and dry weights. The significant increase of shoot length and dry weight were found in 200 and 600 mg L-1 nanocarbontreatments. Additionally, the high contents of photosynthetic pigment concentrations in treated-plants showed significant difference at 600 mg L-1 nanocarbon compared to the control (0 mg L-1 nanocarbon). The antioxidant activities of catalase and peroxidase enzymes in nanocarbon treated-plants were significantly increased compared to the control. Furthermore, the induction of flavonoid contents in treated-plants was increased by 200 and 600 mg L-1 nanocarbon. The results suggested that nanocarbon able to promote the biomass and has benefit to increase the photosynthetic pigments and antioxidant enzymes for plant growth performances. This research provided plant growth and physiological responses evidence on the beneficial effect of nanocarbon in rice plants, especially Black jasmine rice or Hom-nin cultivar.
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Assessment of antioxidant enzymes in response to exogenous titanium dioxide (TiO2) nanoparticles in Chainat 1 rice cultivar
(2018-01-01)
Samart, Sutichai
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Phakamas, Nittaya
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Chutipaijit, Sutee
Antioxidant enzymes are important to prevent the destruction of photosynthetic pigments in plant cells. There have been reported that ZnO nanoparticles can promote activities of antioxidant enzymes in rice, but should not use in high activities because it can cause toxicity. Therefore, the objective of this study was to investigate the effect of titanium dioxide (TiO<inf>2</inf>) nanoparticles on the activities of antioxidant enzymes in Chainat 1 rice cultivar. Rice plants were treated with TiO<inf>2</inf> nanoparticles using different concentrations i.e., 0, 100, 200, 400, 600 and 800 mg.L-1 for every 7 days-interval. Photosynthetic pigment contents (chlorophyll A, chlorophyll B and carotenoid) and activities of antioxidant enzymes (catalase and peroxidase) were recorded at 37, 44 and 51 days after planting. The results showed that the treatment of TiO<inf>2</inf> nanoparticles was not effect on the quantities of chlorophyll A, chlorophyll B and carotenoids, but found that the activities of peroxidase and catalase enzymes were significant affected at all growth stages. Especially, at a concentration of 200 mg.L-1 TiO<inf>2</inf> found that rice plants contained the highest activities of peroxidase enzyme and significant difference from control treatment. However, the treatments of higher dose than 200 mg.L-1 TiO<inf>2</inf> would have a chance to meet toxicity in rice plants as the activities of antioxidant enzymes were decreased.
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Enhancement of Bacterial Anti−Adhesion Properties on Robust PDMS Micro−Structure Using a Simple Flame Treatment Method
(2022-02-01)
Houngkamhang, Nongluck
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Chaisawat, Ploymanee
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Joksathit, Waisaree
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Samart, Sutichai
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Chutipaijit, Sutee
Biofilm−associated infections caused by an accumulation of micro−organisms and pathogens significantly impact the environment, health risks, and the global economy. Currently, a non−biocide−releasing superhydrophobic surface is a potential solution for antibacterial purposes. This research demonstrated a well−designed robust polydimethylsiloxane (PDMS) micro−structure and a flame treatment process with improved hydrophobicity and bacterial anti−adhesion proper-ties. After the flame treatment at 700 ± 20 °C for 15 s, unique flower−petal re−entrant nano−structures were formed on pillars (PIL−F, width: 1.87 ± 0.30 μm, height: 7.76 ± 0.13 μm, aspect ratio (A.R.): 4.14) and circular rings with eight stripe supporters (C−RESS−F, width: 0.50 ± 0.04 μm, height: 3.55 ± 0.11 μm, A.R.: 7.10) PDMS micro−patterns. The water contact angle (WCA) and ethylene glycol contact angle (EGCA) of flame−treated flat−PDMS (FLT−F), PIL–F, and C–RESS−F patterns were (133.9 ± 3.8°, 128.6 ± 5.3°), (156.1 ± 1.5°, 151.5 ± 2.1°), and (146.3 ± 3.5°, 150.7 ± 1.8°), respectively. The Escherichia coli adhesion on the C−RESS−F micro−pattern with hydrophobicity and superoleophobicity was 42.6%, 31.8%, and 2.9% less than FLT−F, PIL−F, and Teflon surfaces. Therefore, the flame−treated C−RESS−F pattern is one of the promising bacterial anti−adhesion micro−structures in practical utilization for various applications.
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Evaluating the effect of zinc oxide nanoparticles on the physiological responses of nine non-photoperiod sensitive rice cultivars
(2017-01-01)
Samart, Sutichai
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Chutipaijit, Sutee
;
Phakamas, Nittaya
The effects of nanopaticles on plant growth and metabolites have been reported in previous studies, but knowledge of the potential impacts of physiological responses is still unclear. Therefore, this study focused on the effect of exposure of zinc oxide (ZnO) nanoparticles on photosynthetic pigment contents (chlorophyll A, chlorophyll B and carotenoids) and the antioxidant enzyme activities (catalase and peroxidase) in nine non-photoperiod sensitive rice cultivars consisting of RD41, RD49, Chai Nat 1, Suphan Buri 1, Suphan Buri 2, Suphan Buri 3, Pathum Thani 1, Pathum Thani 80 and Phitsanulok 2. Rice plants were treated with 200 mg L-1 ZnO nanoparticles for every 15 days-interval. Rice plants were collected at 37, 44 and 51 days after planting for the evaluation of ZnO nanoparticles toxicity. The results showed that nine non-photoperiod sensitive rice cultivars treated with ZnO nanoparticle, as determined by the reduction of photosynthetic pigment contents. The activities of antioxidant enzymes protected plant cell when exposed to the toxicity of ZnO nanoparticles. This study showed that the supplementation of ZnO nanoparticles was no significant difference in photosynthetic pigment contents of rice cultivars. The results indicated that the accumulation of antioxidant enzyme activities could be protecting damage of the photosynthetic pigments in plant cells.

Chutipaijit, Sutee

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