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Biological-Like Memory Allocation Scheme Simulation, Gasydech Lergchinnaboot
Biological-Like Memory Allocation Scheme Simulation, Gasydech Lergchinnaboot
Chulalongkorn University Theses and Dissertations (Chula ETD)
When Gordon Moore observed the number of transistor increasing pattern while memory bandwidth could not catch up with processing unit performance, this diverging rate kept stretching out to create what eventually transpired to be Memory Wall. This consequence becomes a major performance bottleneck. Many bottleneck elimination approaches have been attempted. They incorporate considerable overhead and high complexity. This research proposes a novel memory allocation scheme that employs biological behavioral principles of the living creatures. At the principal construct of their life form lives the cells having limited resources, yet passively operates with little overhead. The proposed method imitates this unicellular …
Development Of In Situ Gel For Artificial Saliva And Satisfaction Study, Rawi Tishyadhigama
Development Of In Situ Gel For Artificial Saliva And Satisfaction Study, Rawi Tishyadhigama
Chulalongkorn University Theses and Dissertations (Chula ETD)
Xerostomia, the subjective complaint about the dry mouth, may lead to the difficulty in daily living including speaking, swallowing, taste acuity and sleeping. Patients are often advised to drink water or chew ice to moisturize the oral cavity and also recommended to use stimulant or saliva substitute, such as sour candies, chewing gum and artificial saliva. In Thailand, there is no artificial saliva products available in the market and this makes it difficult to access the artificial saliva. Hence, artificial saliva have been developed in the form of solution in many hospitals to dispense for xerostomia patients in the hospitals. …
Socioeconomic Determinants Of Happiness Of The Elderly In Bhutan, Tashi Duba
Socioeconomic Determinants Of Happiness Of The Elderly In Bhutan, Tashi Duba
Chulalongkorn University Theses and Dissertations (Chula ETD)
Elderly in Bhutan are rising steadily as a proportion of total population. In 2015, population older than 60 constituted about 7.3% of the total population compared to 6.9% in 2010. By 2030, the elderly population is estimated to reach 10.1% of total population. Along with growing numbers of elderly in Bhutan and rapid socioeconomic transformations, the individual-level of happiness decreases with age, the lowest being among the elderly (the Gross National Happiness Index surveys of 2010 and 2015 and Bhutan Living Standard Survey 2012). Nevertheless, there is limited literature exploring factors that are associated with happiness of the elderly. This …
Tobacco Use, Health Care Utilization, Household Expenditure And Smoking Cessation In China, Changle Li
Tobacco Use, Health Care Utilization, Household Expenditure And Smoking Cessation In China, Changle Li
Chulalongkorn University Theses and Dissertations (Chula ETD)
This dissertation studied the tobacco use impact of on health care utilization, household expenditure, and self-rated health among rural residents in rural China. The 2010-2014 China Family Panel Studies data were employed here. Moreover, this study also conducted the randomized controlled trial and analyzed the cost-effectiveness smoking cessation intervention among college-aged smokers in Inner Mongolia, China. The main findings showed: (1) Current and former smokers use more outpatient care than non-smokers. Moreover, former smokers use more inpatient care than non-smokers in rural China. (2) Long-term quitters decreased the probability of using inpatient care compared with recent and moderate-term quitters in …
Optimal Sizing, Siting, And Scheduling Of Bess For Mitigatingvoltage Problem In Distribution Utilities With Highpenetration Of Pv Rooftops, Anh Thi Nguyen
Optimal Sizing, Siting, And Scheduling Of Bess For Mitigatingvoltage Problem In Distribution Utilities With Highpenetration Of Pv Rooftops, Anh Thi Nguyen
Chulalongkorn University Theses and Dissertations (Chula ETD)
For ambition of reducing CO2 emission and reliance on fossil fuels, solar power generation has been received special supports and deployed rapidly in many distribution networks. However, with a high presence of solar power generation, power grid control is no longer simple as conventional one due to natural variation of solar power and large space dispersion of solar power systems. The negative impacts comprise power system stability, electric power quality involving frequency and voltage criteria and other potential issues. Among these impacts, voltage problem is most obvious. Many solutions have been proposed to solve the voltage problem whereas battery energy …
Education Management Reform Strategies For Enhancing The Quality Citizenship In Cambodia, Chuonnaron Hang
Education Management Reform Strategies For Enhancing The Quality Citizenship In Cambodia, Chuonnaron Hang
Chulalongkorn University Theses and Dissertations (Chula ETD)
This research study aimed to 1) study the conceptual framework of education management reform and the quality citizenship; 2) study the current and desirable state of education management reform for enhancing the quality citizenship in Cambodia; 3) find out the needs in education management reform for enhancing the quality citizenship in Cambodia; 4) develop education management reform strategies for enhancing the quality citizenship in Cambodia. This study employed the research and development method (R&D). The data were collected from 710 respondents, consisting of 10 education policymakers, 30 Directors of MoEYS departments, 80 school administrators, 150 teachers, 80 School Support Committee …
Determination Of Waste Treatment Fee Pricing Mechanism For Municipal Solid Waste By Mechanical Biological Treatment Method Utilising The Public Private Partnership Model In Thailand, Adrian Paul Raj
Chulalongkorn University Theses and Dissertations (Chula ETD)
Private participation in the development of municipal solid waste treatment projects through public-private partnership models accelerate the implementation of sustainable treatment technologies such as Mechanical Biological Treatment (MBT) facilities within developing countries without creating excessive burden to government infrastructure investment. The introduction of preset pricing mechanism to regulate potential waste treatment fee structure based on pre-determined project internal rate-of-return mitigates multi-party risks, such as the potential developer project losses or the opportunity to profiteer. Research encompasses technical assessment of project requirements for implementation of required technologies, commercial analysis of project capital expenditure (CAPEX), operational expenditure (OPEX) and assessment of revenue …
Establishing A Luggage Handling Service Company, Anan Prasertrungreung
Establishing A Luggage Handling Service Company, Anan Prasertrungreung
Chulalongkorn University Theses and Dissertations (Chula ETD)
Luggage delivery service has never existed in Thailand officially but already established in another country such as Japan. However, this service has a potential to be a very good service as it could benefit to traveler which Thailand has welcomed more than 30m of them per annum but the model from another country could not be implement directly to Thailand. By developing the model, this service will fit to Thai's market. There are many risks that researcher has to consider before starting the business to avoid or prevent risks into the business. Moreover, this study will not limit only the …
A Comparative Assessment Of Self-Consumption Support Schemes For Rooftop Pv Systems In Thailand, Kespanerai Kokchang
A Comparative Assessment Of Self-Consumption Support Schemes For Rooftop Pv Systems In Thailand, Kespanerai Kokchang
Chulalongkorn University Theses and Dissertations (Chula ETD)
The growth in the adoption of solar photovoltaic (PV) power generation systems has been accelerating around the world, contributing to the debate about the future of policy and regulation in a high distributed energy resources future. Thailand is one of the leaders in solar investment in Southeast Asia. It has recently shifted its policy framework from subsidizing power export through feed-in tariffs toward a policy that is focused on supporting self-consumption of PV electricity. There are three possible forms of self-consumption support scheme: net metering, net billing, and self-consumption only. Net metering and net billing are electricity policies to assign …
The Socio-Economic Impact Of Iuu-Fishing And Its Countermeasures On Small Scale Fishermen In Thailand : A Case Study Of Baan Khan Kradai, Ao Noi, Prachuap Kiri Khan, Roman Zwoelfer
Chulalongkorn University Theses and Dissertations (Chula ETD)
This study investigates the socio-economic effects of Illegal, Unreported and Unregulated fishing (IUU-fishing) on households of small scale fishermen, whose income derives almost entirely from fishing. The research question is "What are the socio-economic impacts of IUU-fishing and government's countermeasures on Thai fishing communities, in particular small scale fishermen's households, before and after 2015?". A mixed quantitative and qualitative approach was chosen to better grasp the complexity of fishing-related changes to household income and by the case study of a small scale fishing community in Ao Noi Subdistrict of Prachuap Kiri Khan Province. This resulted to a general understanding of …
Drivers And Constraints Of Conversion To Organic Farming In The Kingdom Of Bhutan, Parladh Mahat
Drivers And Constraints Of Conversion To Organic Farming In The Kingdom Of Bhutan, Parladh Mahat
Chulalongkorn University Theses and Dissertations (Chula ETD)
Organic farming is one of the several approaches towards environmental conservation and aims to increase agricultural production and household income for small-scale farmers to enable them to come out of poverty and improve livelihood. The objective is to investigate the key drivers and constraints in conversion to organic farming for domestic organic certified and non-certified but organic farmers and provide policy recommendation to government and relevant agency. The survey data of 146 respondents comprising of certified organic (n=47) and non-certified (n=99) were collected from Gasa district of Bhutan during the month of October 2017. The data analysis includes the use …
Roles Of Dissimilatory Nitrate Reduction To Ammonium In Biological Nitrogen Removal System, Pokchat Chutivisut
Roles Of Dissimilatory Nitrate Reduction To Ammonium In Biological Nitrogen Removal System, Pokchat Chutivisut
Chulalongkorn University Theses and Dissertations (Chula ETD)
Biological nitrogen removal system is a wastewater treatment process that normally utilizes nitrification-denitrification to convert nitrogen wastes to unharmful gaseous products. However, apart from these two pathways, dissimilatory nitrate reduction to ammonium (DNRA) can also compete with denitrification for nitrate and yield ammonium waste as the end product. The aim of this research is to extend knowledge on the DNRA pathway, including the study on its occurrence and microorganisms responsible for the process. To observe the presence of DNRA, microbial sludge from aquacultures which utilized biological nitrogen removal processes was applied to examine the pathway of DNRA in these systems. …
Development Of Novel Electrocoagulation Reactor (Ecr) For Turbidity Removal And Decolorization From Textile Industry Wastewater, Penghour Hong
Development Of Novel Electrocoagulation Reactor (Ecr) For Turbidity Removal And Decolorization From Textile Industry Wastewater, Penghour Hong
Chulalongkorn University Theses and Dissertations (Chula ETD)
High concentration of dyes together with turbidity were frequently found in the effluents of textile industry wastewater, which are the toxic substances. To remove these contaminants, the combination between electrocoagulation process (EC) and separation has been proposed in this study. The objective of this present work is to design and evaluate the new electrocoagulation reactor (ECR) for treating dye and turbidity from synthetic textile wastewater. The optimization of electrode configuration and design parameter were examined with the batch column reactor for containing 4 liters of wastewater. The result showed that monopolar arrangement within the inner gap 1.5 cm and current …
Evaluation Of Push Out Bond Strength Of Glass Fiber Post Related With Ultrasonic Irrigation, Nomjit Vidhyaphum
Evaluation Of Push Out Bond Strength Of Glass Fiber Post Related With Ultrasonic Irrigation, Nomjit Vidhyaphum
Chulalongkorn University Theses and Dissertations (Chula ETD)
Objective This study compared the bond strength of glass fiber post to dentin using different irrigation methods and solutions and to evaluate the bond strength in different regions of the root. Methods One hundred human anterior maxillary teeth were randomly divided into 10 groups (n=10). Root canal filling and post space preparation were carried out followed by diverse final irrigation techniques. Groups 1 to 3 underwent syringe irrigation, groups 4 to 6 irrigation with ultrasonic instrumentation and groups 7 to 9 passive ultrasonic irrigation. Different irrigant solutions were used in each groups as 2.5% NaOCl (groups 1,4,7), 17% EDTA (groups …
Microleakage Of Enamel Preservation At Gingival Wall Of Class Ii Resin Composite Restorations (Nanofilled Vs Bulk-Fill), Onladda Pisuttiwong
Microleakage Of Enamel Preservation At Gingival Wall Of Class Ii Resin Composite Restorations (Nanofilled Vs Bulk-Fill), Onladda Pisuttiwong
Chulalongkorn University Theses and Dissertations (Chula ETD)
Objectives. This in vitro study tested the hypothesis that preserving a thin enamel layer at the gingival margin and using bulk-fill resin composites could minimize microleakage of class II resin composite. Materials and Methods. Thirty-six human third molars were randomly divided into three groups of 12 specimens each: Filtek Bulk Fill Posterior Restorative in Capsules (BFC), Filtek Bulk Fill Posterior Restorative in Syringes (BFS) and Filtek Z350 XT (Z350). Teeth were prepared on two sides for a class II cavity (3 mm buccolingually x 2 mm mesiodistally at occlusal and 1.5 mm at coronal x 4 mm of axial depth) …
Effect Of Remineralization On Color Change Of Bleached Tooth, Panita Suttisakpakdee
Effect Of Remineralization On Color Change Of Bleached Tooth, Panita Suttisakpakdee
Chulalongkorn University Theses and Dissertations (Chula ETD)
The aim of this in vitro study was to investigate the effect of remineralization and time on the color and microhardness change of teeth bleached using 10% carbamide peroxide (10%CP) or 40% hydrogen peroxide (40%HP). Seventy-two 6x6x2 mm3 enamel slabs were prepared from human premolars. The specimens' color and Vickers' microhardness were recorded at baseline (T0). The specimens were divided into six groups, two groups were treated with 10%CP with or without casein phosphopeptides and amorphous calcium phosphate (CPP-ACP) (10%CP and 10% CP/CPP-ACP, respectively), two groups were treated with 40% HP with or without CPP-ACP (40%HP and 40%HP/CPP-ACP, respectively), one …
The Overall Esthetic Assessment Of Anterior Single-Tooth Implant Restoration: Modified Objective Criteria, Pongsakorn Komutpol
The Overall Esthetic Assessment Of Anterior Single-Tooth Implant Restoration: Modified Objective Criteria, Pongsakorn Komutpol
Chulalongkorn University Theses and Dissertations (Chula ETD)
Objectives: The aim of this study was to observe the correlation of esthetic outcomes of single-tooth implant restoration when using Pink Esthetic Score/White Esthetic Score and the new modified assessment (Modified Objective Criteria; MOC) Materials and Methods: This crossectional retrospective study, up to 5 years, recruited 26 patients who single implant in maxillary central incisor area was placed. All the implants were recalled. Demographic data, intraoral photograph, dental model, periapical radiograph and CBCT were taken. One examiner assessed the esthetic outcomes by using PES/WES and MOC (gingiva, prosthesis and bone foundation) with 2 weeks between each evaluation. The score of …
A Comparison Of Taper-Implant Designs And Bone Quality On The Primary Stability: An In Vitro Biomechanical Study, Ratchaya Chayangsu
A Comparison Of Taper-Implant Designs And Bone Quality On The Primary Stability: An In Vitro Biomechanical Study, Ratchaya Chayangsu
Chulalongkorn University Theses and Dissertations (Chula ETD)
Objective To investigate the effect of the taper-implant design and the effect of bone quality on the primary stability in terms of insertion torque test, removal torque test and resonance frequency analysis. Methods Five taper-implant designs were test in artificial bone blocks with four qualities. Five repetitions per implant design were placed in each bone quality started from softest bone block. The implant motor was used to prepared the osteotomy sites and implant insertion according to manufacturers' recommendation. Peak insertion torque values were measured and recorded by implant motor when the platform of the implant flush to the bone level. …
The Longevity Of Ceramic Veneers: Clinical Evaluation Of Mechanical, Biological, And Esthetic Performances Of Ceramic Veneers Up To 7-Years Retrospective Study, Rapeepan Monaraks
The Longevity Of Ceramic Veneers: Clinical Evaluation Of Mechanical, Biological, And Esthetic Performances Of Ceramic Veneers Up To 7-Years Retrospective Study, Rapeepan Monaraks
Chulalongkorn University Theses and Dissertations (Chula ETD)
Purpose: To evaluate the longevity and mechanical, biological and aesthetic performance of ceramic veneers placed after 5 to 7 years in service. Materials and Methods: Ceramic veneer restorations were clinically examined following modified from the United States Public Health Service (USPHS) and World Dental Federation (FDI) criteria. Clinical evaluation was performed by two clinicians regarding mechanical, biological and aesthetic performances during maintenance appointments between September 2016 and August 2017. Intra-examiner and inter-examiner reliability were evaluated by calculating the intraclass correlation coefficient and inter-examiner calibration. The results were analysed by Kaplan-Meier survival estimation method and log-rank test at a 95% confidence …
Host Responses In Peri Implant Tissue In Comparison To Periodontal Tissue, Raviporn Madarasmi
Host Responses In Peri Implant Tissue In Comparison To Periodontal Tissue, Raviporn Madarasmi
Chulalongkorn University Theses and Dissertations (Chula ETD)
The host response in peri-implant tissue may differ from that in periodontal tissue in a healthy individual. The purpose of this study is to investigate the expression of inflammatory cytokines in peri-implant crevicular fluid (PICF)from single implant with two different abutment types in comparison to healthy periodontal tissue. Moreover, the effect of these inflammatory cytokines on the expression of FAK and RANKL were also studied. Nineteen participants with healthy implants and teeth were recruited according to the inclusion and exclusion criteria. PICF and gingival crevicular fluid (GCF) was collected using sterile paper points. The expression level of inflammatory cytokines including …
Evaluation Of Voids In Class Ii Restorations Restored With Bulk-Fill And Conventional Nanohybrid Resin Composite, Saiisara Chaidarun
Evaluation Of Voids In Class Ii Restorations Restored With Bulk-Fill And Conventional Nanohybrid Resin Composite, Saiisara Chaidarun
Chulalongkorn University Theses and Dissertations (Chula ETD)
Objectives: The aim of the study was to evaluate the influence of four resin composites on voids in small and large Class II cavities. Furthermore, the thickness of the first increment of the restorations was studied. Methods: Eighty artificial lower second premolars were divided into two preparation designs with 40 standardized Class II cavities in each, and then restored with four resin composites (three bulk-fill types: SonicFill 2, Filtek Bulk Fill (capsule), Filtek Bulk Fill (syringe) and a conventional nanohybrid resin composite: Premise). Restorations were sectioned for microscopic evaluation and a Kruskal-Wallis analysis was performed to evaluate the number of …
Immunohistochemical Assessment Of The Peri-Implant Soft Tissues Around Different Abutment Materials : An Experimental Study In Human, Sirikarn Thongmeearkom
Immunohistochemical Assessment Of The Peri-Implant Soft Tissues Around Different Abutment Materials : An Experimental Study In Human, Sirikarn Thongmeearkom
Chulalongkorn University Theses and Dissertations (Chula ETD)
Objective To evaluate the effect of 4 different types of abutment material, which are titanium, zirconium oxide, gold alloy, and zirconia-coping cemented on titanium-base, on the surrounding soft tissues. Material and Methods Twenty dental implants in posterior edentulous area were randomly divided into 4 groups and inserted 4 types of abutment materials; Titanium, zirconia, gold-alloy, and titanium-base, on the implant installation surgery day. Eight weeks after implant surgery, peri-implant soft tissues around experimental abutments were harvested and split according to implant side; buccal, lingual, mesial, and distal. The specimens were processed through immunohistochemical preparation and stained with CD3, CD20, CD68, …
Bioactive Clitoria Ternatea L. Flower Extract For The Glycemic Control To Carbohydrate Foods And Sugary Beverages, Charoonsri Chusak
Bioactive Clitoria Ternatea L. Flower Extract For The Glycemic Control To Carbohydrate Foods And Sugary Beverages, Charoonsri Chusak
Chulalongkorn University Theses and Dissertations (Chula ETD)
Clitoria ternatea L. flower, an edible plant containing anthocyanins, has been currently used as the source of natural colorant in foods, beverages and desserts worldwide. The previous report demonstrated its biological properties including antioxidant and antihyperglycemic activity. However, the various concentrations of Clitoria ternatea were used in food and beverages but the effective concentration of Clitoria ternatea on the digestibility of starch and glycemic response remains unknown. In this study, the effects of foods and beverage containing Clitoria ternatea L. flower extract (CTE) on starch digestibility in vitro, postprandial glycemic response and antioxidant capacity in human as well as sensory …
The Effect Of Nutrition Education Intervention On The Amount Of School Lunch Consumption In Children Aged 3-5 Years: Case Study In Bangkok, Thailand, Hathaichanok Tirapongporn
The Effect Of Nutrition Education Intervention On The Amount Of School Lunch Consumption In Children Aged 3-5 Years: Case Study In Bangkok, Thailand, Hathaichanok Tirapongporn
Chulalongkorn University Theses and Dissertations (Chula ETD)
Low vegetable and fruit intake and micronutrient deficiency has been reported for Thai children aged three to five years. Many nutrition education programs have been recommended to solve these problems, especially for preschool children. This study aims to investigate the effect of the novel nutrition education program on the amount of vegetables, fruit, energy and nutrients consumption in school lunches of children aged three to five years. United for Healthier Kids is a nutrition education program that desires to motivate healthy eating via a set of nutrition education tools by encouraging variety in the types of food consumed, increase vegetables …
Effect Of Different Cooking Methods On The Bioaccessibility Of Polyphenols And Antioxidant Capacities Of Pakwan Ban (Sauropus Androgynus), Imas Arumsari
Chulalongkorn University Theses and Dissertations (Chula ETD)
This study was aimed to assess the effect of different cooking methods on the amounts of phytochemical compounds and antioxidant capacities of sweet leaf (Sauropus androgynus) before and during in vitro simulated gastrointestinal digestion. The optimum cooking time of each cooking method was prior selected according to the total phenolic compounds, the ferric-reductase antioxidant power (FRAP) activity, the color characteristics, the hardness, and the texture preference of cooked sweet leaf samples. Consequently, the sweet leaf samples cooked by boiling for 5 mins or microwaving at 800 watts for 90 sec were compared with raw sweet leaf. The results showed that …
The Inhibitory Effect Of Anthocyanins-Rich Thai Berries Extracts On Lipid Digestion And Absorption, Netima Chamnansilpa
The Inhibitory Effect Of Anthocyanins-Rich Thai Berries Extracts On Lipid Digestion And Absorption, Netima Chamnansilpa
Chulalongkorn University Theses and Dissertations (Chula ETD)
Dyslipidemia is one of the major risk factor that contributes to chronic diseases such as cardiovascular disease and diabetic mellitus. Anthocyanin-rich Thai berries have been documented to have hypolipidemic activity. However, no scientific data is available regarding the mechanism of lipid lowering property. Thus, the objective of this study was to elucidate the mechanism of action of Thai berries including Prunus domestica L., Antidesma bunius (L.) Spreng, Syzygium cumini (L.) Skeels, Syzygium nervosum A. Cunn. Ex DC, and Muntingia calabura L. on a reduction of lipid digestion and absorption in vitro. Phytochemical compounds of Thai berries, including total phenolic (TP), …
Preparation And Antimicrobial Activity Of Olive Oil Nanoemulsions, Kusuma Jaemsak
Preparation And Antimicrobial Activity Of Olive Oil Nanoemulsions, Kusuma Jaemsak
Chulalongkorn University Theses and Dissertations (Chula ETD)
Due to their health benefits including antioxidant, anti-inflammatory and also antimicrobial activities, extra virgin olive oil (EVOO) has received much attention in food, cosmetics, and pharmaceutical industries. Nanoemulsions (NEs) solubilize and increase absorption and bioavailability of lipophilic substances (i.e. olive oil). However, there is insufficient data in the formation of olive oil NEs. This study aimed to investigate the formation of oil-in-water NEs containing EVOO using low-energy approach and high-energy approach. NEs were characterized for size, polydispersity and zeta potential after storage at different conditions for up to 180 days. They were determined for antimicrobial susceptibility. From the result, NEs …
Relationship Between Depression And Metabolic Syndrome In Working Age Population In Bangkok, Matthawan Sujinnapram
Relationship Between Depression And Metabolic Syndrome In Working Age Population In Bangkok, Matthawan Sujinnapram
Chulalongkorn University Theses and Dissertations (Chula ETD)
The objectives of this observational descriptive cross-sectional study were to determine the prevalences of depression and metabolic syndrome and to examine the relationship between depression and metabolic syndrome and dietary pattern in working age people in Bangkok. The samples were 446 participants (123 males and 323 females) aged 20 and over who received an annual health examination 2017. The metabolic syndrome was defined by NCEP ATP III criteria. The data on waist circumference, fasting blood glucose, triglycerides, high-density lipoprotein cholesterol, blood pressure, depression score, and dietary pattern were collected. The relationship between depression and metabolic syndrome and dietary patterns were …
Microencapsulation Instant Coffee By Spray Drying Using Hydrolysed Konjac Glucomannan, Desi Sakawulan
Microencapsulation Instant Coffee By Spray Drying Using Hydrolysed Konjac Glucomannan, Desi Sakawulan
Chulalongkorn University Theses and Dissertations (Chula ETD)
This research is aimed at finding a suitable wall material from konjac glucomannan to shield antioxidant compounds in coffee extract along with appropriate condition of spray drying to produce microencapsulated instant coffee. There are two steps of study. In the first step, two types of konjac powder (A. muelleri and A. bulbifer) and different concentrations of mannanase enzyme were used to investigate the viscosity reduction of konjac glucomannan hydrolysate (KGMH). It is found that mannanase at 38,000 units per gram substrate was able to lower the viscosity of A. muelleri solution to less than 100 m.Pa.s, while A. bulbifer remained …
Halophilic Bacteria From Salty Fermented Foods And Its Bacteriocin Encoding Gene Expression To Use As Biocontrol Agent Against Staphylococcus Aureus In Salt Added Foods, Vishal Chhetri
Chulalongkorn University Theses and Dissertations (Chula ETD)
This research was aimed to isolate, select and apply bacteriocin producing halophilic bacteria from salty fermented foods, Plara (Thai traditional salty fermented fish) and soya sauce as bio-control agent in foods. The isolates having inhibitory activity against different strains of Staphylococcus aureus were selected, identified and characterized prior to application as protective starter in food models. Bacterial communities of Plara and soya sauce samples were studied by two methods, a cultural dependent and cultural independent method (Reverse Transcriptase PCR DGGE (Rev-T PCR-DGGE)), and subsequently sequenced by 16s rDNA analysis. Halanaerobium spp. in Plara and Staphylococcus gallinarum in soya sauce were …