Browsing by Author "Siwawit Buasuwan"

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    1 Siwawit Buasuwan Formation of Rice Bran Glycosphingolipids Microemulsion Powders with Vitamin B1, B2, B12, and Folate as Additives for Elderly Food Journal of Food Health and Bioenvironmental Science Vol.16 No.3 (2023) pp.57-62 TCI 1 September-December 2023 0.8
    (Journal of Food Health and Bioenvironmental Science Vol.16 No.3 (2023) pp.57-62, 2023-12-19) Siwawit Buasuwan
    The study aimed to investigate at the external factors affecting elderly day care centers after COVID-19 crisis in Bangkok, Thailand. The research method used was qualitative research, which included a review of the literature and in-depth interviews with three groups of stakeholders in Bangkok: two officers from the government sector, two elderly day care center owners and three caregivers from the private sector and three elderlies and two family members from the community sector. The semi-structured interview questions were open-ended and validated by two experts. The researcher then utilized the content analysis, case study research and PESTLE analysis techniques to examine the factor. Results showed the three perspectives (the government sector, the private sector, and the community sector). The factors that impact elderly care centers vary among different groups of individuals, with the government and private sectors having contrasting approaches. The government has implemented various measures to control the standards of elderly care centers and manage the spread of COVID-19. However, the private sector prioritizes business expansion and service provision, often neglecting government standards. This contrasts with the public sector, which values diverse factors such as standards for care centers, caregiver qualifications, disease control measures, service fees, convenience and the quality of services provided by the centers. In conclusion, elderly day care centers can better adapt to the challenges posed by the COVID-19 crisis and provide improved care for the elderly by enhancing affordability and integrating technology. Government should focus on improving certification standards and creating supportive living environments for the elderly.
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    Formation of Rice Bran Glycosphingolipids Microemulsion Powders with Vitamin B1, B2, B12, and Folate as Additives for Elderly Food
    (Research and Development Institute Suan Dusit University, 2023) Junjarus Sermsathanaswadi; Siwawit Buasuwan; Dusit Angthararuk; Rittipun Rungruang; J. Sermsathanaswadi; Faculty of Science and Technology, Suan Dusit University, Bangkok, 10300, Thailand; email: janjaras_ser@dusit.ac.th
    This research investigated the extraction of glycosphingolipids from rice bran as an emulsifier to form microemulsions with vitamins B1, B2, B12 and folate being added to prepare the emulsion powder as the dietary supplement materials. Rice bran, a low-value agricultural material, was used as raw material for glycosphingolipids extraction using a solvent mixed between dichloromethane and methanol at a ratio of 2:1. The crude extract was observed in physical characteristics. The sphingosine in crude extract was analyzed by spectrophotometer technique. The emulsion was prepared using a mixture of crude extract, Polysorbate 80 and coconut oil. The average particle size of the emulsion was determined using Particle Size Analyzer. The emulsion was made into powder using various drying methods including hot air drying, spray drying and freeze-drying method. The mannan-oligosaccharides were used as an additive to replace the expensive mannitol or the energy-producing sucrose. The distribution property in distilled water of the emulsion powder was determined. The morphology and the surface of the powder emulsion were measured using SEM. The resistance to the imitation of the digestive system and encapsulation efficiency were determined. After extraction, the yield of crude glycosphingolipids extract from rice bran was 20.65%. The crude extract was a clear liquid, slightly yellow, insoluble in water and looks like oil. We found that the crude extract contained sphingosine 22.75 _g/g of crude extract from rice bran. When the emulsion was prepared, the characteristic of the emulsion showed the colloidal solution with a milky white color. The size of the emulsion without vitamins and with vitamins B1, B2, B12, and folate (total 100 ppm) were 70-75 nm and 74.4-78.1 nm, respectively. This result illustrated that the emulsion was classified as glycosphingolipid microemulsion. The emulsion powder was prepared and we found that the hot air drying and spray drying methods showed a viscous liquid with an oily smell. Whereas the freeze-drying method created the form of a light yellow, odorless and fine emulsion powder. The average particle size of emulsion was 80-100 nm. The solubility test showed that the emulsion powder was able to dissolve up to 300 g/L and 450 g/L at 25¡C and 70¡C, respectively. The morphological analysis showed that the powder emulsion was quite spherical with a diameter of less than 100 micrometers. In a simulated digestive system test, it was found that glycosphingolipid emulsion releases all vitamins in gastric simulated fluids and simulated small intestinal fluid conditions with values greater than 80%. © 2023, Research and Development Institute Suan Dusit University. All rights reserved.
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    Formation of Rice Bran Glycosphingolipids Microemulsion Powders with Vitamin B1, B2, B12, and Folate as Additives for Elderly Food
    (Graphicsite, 2024-12-18) Junjarus Sermsathanaswadi; Siwawit Buasuwan; Dusit Angthararuk; Rittipun Rungruang
    This research investigated the extraction of glycosphingolipids from rice bran as an emulsifier to form microemulsions with vitamins B1, B2, B12 and folate being added to prepare the emulsion powder as the dietary supplement materials. Rice bran, a low-value agricultural material, was used as raw material for glycosphingolipids extraction using a solvent mixed between dichloromethane and methanol at a ratio of 2:1. The crude extract was observed in physical characteristics. The sphingosine in crude extract was analyzed by spectrophotometer technique. The emulsion was prepared using a mixture of crude extract, Polysorbate 80 and coconut oil. The average particle size of the emulsion was determined using Particle Size Analyzer. The emulsion was made into powder using various drying methods including hot air drying, spray drying and freeze-drying method. The mannan-oligosaccharides were used as an additive to replace the expensive mannitol or the energy-producing sucrose. The distribution property in distilled water of the emulsion powder was determined. The morphology and the surface of the powder emulsion were measured using SEM. The resistance to the imitation of the digestive system and encapsulation efficiency were determined. After extraction, the yield of crude glycosphingolipids extract from rice bran was 20.65%. The crude extract was a clear liquid, slightly yellow, insoluble in water and looks like oil. We found that the crude extract contained sphingosine 22.75 micrograms/gram of crude extract from rice bran. When the emulsion was prepared, the characteristic of the emulsion showed the colloidal solution with a milky white color. The size of the emulsion without vitamins and with vitamins B1, B2, B12, and folate (total 100 ppm) were 70-75 nm and 74.4 -78.1 nm, respectively. This result illustrated that the emulsion was classified as glycosphingolipid microemulsion. The emulsion powder was prepared and we found that the hot air drying and spray drying methods showed a viscous liquid with an oily smell. Whereas the freeze-drying method created the form of a light yellow, odorless and fine emulsion powder. The average particle size of emulsion was 80-100 nm. The solubility test showed that the emulsion powder was able to dissolve up to 300 g/L and 450 g/L at 25°C and 70°C, respectively. The morphological analysis showed that the powder emulsion was quite spherical with a diameter of less than 100 micrometers. In a simulated digestive system test, it was found that glycosphingolipid emulsion releases all vitamins in gastric simulated fluids and simulated small intestinal fluid conditions with values greater than 80%.
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    Preliminary ions removal from synthetic iron solution by zeolite and perlite via xrf technique
    (Trans Tech Publications Ltd, 2020) Kronnika Saetan; Chaisiri Kitpaosong; Siwawit Buasuwan; Rapeephun Dangtungee; R. Dangtungee; Department of Mechanical and Process Engineering (MEPE), The Sirindhorn International Thai-German Graduate School of Engineering (TGGS), King MongkutÕs University of Technology North Bangkok (KMUTNB), Bangkok, 1518 Wongsawang, Bangsue, 10800, Thailand; email: rapeephun.d@tggs.kmutnb.ac.th; R. Dangtungee; Natural Composite Research Group (NCR), MEPE, TGGS, KMUTNB, Thailand; email: rapeephun.d@tggs.kmutnb.ac.th; R. Dangtungee; Research Center of Innovative Rubber (RIR), Science and Technology Research Institute (STRI), KMUTNB, Thailand; email: rapeephun.d@tggs.kmutnb.ac.th; R. Dangtungee; Researh Center of Nano Industries and Bio-plastics (NBP), KMUTNB, Thailand; email: rapeephun.d@tggs.kmutnb.ac.th
    Ion removal is a long problem on natural freshwater resources. In order to modify the adsorption performance to remove ions from synthetic iron solution, natural zeolite and natural perlite were treated with deionized water (DI water) as D-zeolite and D-perlite. And, 1M sulphuric acid (H2SO4) was used to treat the adsorbent as H-zeolite and H-perlite. The capability of ion removal was preliminarily investigated from the reduction of iron in solution by X-ray fluorescence spectrometer. The result showed that treatment of adsorbents with DI water was more capability than 1M H2SO4 solution. © 2020 Trans Tech Publications Ltd, Switzerland.