Thai Science and Technology Journal

Development of a Raw Material Disbursement Management System: A Case Study in Automotive Parts Manufacturing

Supanida Rungkuha, Buncha Wattana — Fri, 31 Oct 2025 00:00:00 +0700

This research aims to develop a raw material disbursement management system for an automotive parts manufacturing plant to enhance operational efficiency. The system focuses on reducing redundant steps, providing real-time tracking of raw material requisition, and enabling convenient dataverification. It was designed using the system development life cycle (SDLC) methodology and developed as a web application with Node.js, Express.js, React.js,and Postgre SQL.The system supports real-time processing, ensures data security ,and offers high scalability.Testing results showed that the system reduced process steps from 10 to 5. User satisfaction scores for easeof use and system design were 3.94 and 4.11, respectively, while scores for system performance and operational benefits were 4.78 and 4.72. Overall user satisfaction was rated at a high level, with a mean scoreof 4.39. In summary, the system significantly enhances operational efficiency, facilitates data verification, and ensures effective monitoring of raw material disbursement in line with user requirements.

Application of Geoinformatics to Assess Coastal Changes and Changing Trends at Sirinat National Park, Phuket

Phusanisa Sukkaeo, Venus Tuankrua, Laddawan Rianthakool — Fri, 31 Oct 2025 00:00:00 +0700

The coastal area of Sirinat National Park in Phuket Province has undergone continuous changes in recent years, impacting the coastal ecosystem. This study employed Geographic Information Systems (GIS) to analyze coastline changes from 2017 to 2024 using the Normalized Difference Vegetation Index (NDVI) and the Digital Shoreline Analysis System (DSAS). These tools were used to assess shoreline width, determine rates of coastal change, and forecast future trends using simple linear regression. The results showed that the average shoreline width between 2017 and 2024 was 112.40 meters, with an average coastal change rate of -1.07 meters per year. At specific locations such as Nai Yang Beach, Mai Khao Beach, and Sai Kaew Beach, the rates of change were -0.59, -0.50, and -2.87 meters per year, respectively, indicating relatively stable conditions. Forecasts for 2029 and 2034 predict average shoreline widths of 106.39 meters and 102.86 meters, respectively, with projected rates of change from 2017 to 2029 and 2017 to 2034 being -1.00and -0.92 meters per year. These findings can assist government agencies and other stakeholders in developing appropriate coastal land-use policies, including zoning and infrastructure planning. Additionally, the results can be used to raise public awareness in at-risk areas and promote community participation in systematic coastal management.

Evaluation of Yield, Agronomic Traits, and Amylose Content in Advanced Non-Glutinous Rice Lines

Tipsuda Teanthong, Yaowapha Jirakiattikul , Bhornchai Harakotr — Fri, 31 Oct 2025 00:00:00 +0700

The objectiveof this study was to evaluate the yield, agronomic traits, and amylose content of 10 advanced non-glutinous rice lines, compared with the varieties RJP213320-B-1-1 (low amylose content) and RD85 (high amylose content). The experiment was conducted using a randomized complete block design with three replications at the Ruamjai Pattana Kwamroo Research Stationin Pathum Thani, Thailand. The results indicated that the 10 advanced non-glutinous rice lines produced yields ranging from 723.02 to 983.11 kg/rai, had earlyharvesting datesof 87-102 days, and short plant heights ranging from 77.33 to 101.32 cm. The promising lines, including RJPWS23001 and RJPWS23003, showed no significant differences in yield, yield components, or agronomic traits compared with RD85, but outperformed the RJP213320-B-1-1 variety. Moreover, RJPWS23001 and RJPWS23003 were categorized as low and high amylose content types, respectively, with amylose contents of 18.64% and 26.20%.These promising lines will beevaluated infarmer field trials to gather further information on their yield potential and adaptability to target growing areas in the future.

Phosphorus Fractions in Soil as an Influence of Rock Phosphate and Phosphate-Solubilizing Microorganisms

Sanit Sawatdikarn, Saychol Sukyankij — Fri, 31 Oct 2025 00:00:00 +0700

An important problem with acid sulfate soils (ASS) is that plant nutrients are present in unavailable forms, particularly phosphorus (P). This study aimed to investigate the effects of applying rock phosphate (RP)and phosphate-solubilizing microorganisms (PSMs) on available P and P fractions in ASS. The experiment was conducted using a completely randomized design (CRD) with three replicates and five treatments. The treatments were as follows: T1-no addition of RP and PSM (control), T2-addition of PSMs, T3-addition of RP at 100 g/pot (RP₁₀₀), T4-addition of RP at 50 g/pot combined with PSMs (RP₅₀+PSMs), and T5-addition of RP at 100g/pot combined with PSMs (RP₁₀₀+PSMs).The findings revealed that the application of RP at 50 and 100g/pot (RP₁₀₀,RP₅₀+PSMs,RP₁₀₀+PSMs) resulted in higher inorganic P, organic P, and residual P compared with the control and the treatment with PSMs alone. Regarding Kalmegh yield, there was no significant difference between RP₅₀+PSMs and RP₁₀₀+PSMs. However, the RP₁₀₀+PSMs treatment provided the highest values of available P, soluble P, Fe-P, and Al-P. The results indicate that in ASS, the combined application of RP and PSMs is important for increasing soil P content, both in available forms (available P and soluble P) and in reserve forms (Fe-P and Al-P).

Effect of Sodium Hypochlorite in Culture Medium on Shoot Proliferation and Root Induction of Curcuma longa L.

Fri, 31 Oct 2025 00:00:00 +0700

The propagationof Curcuma longa L., a medicinal herb known for its therapeutic properties, including alleviating stomach discomfort and expelling gas, can be effectively supported through plant tissue culture to ensure an adequate supply for cultivation. However, the cost of autoclaving for media sterilization is high. The addition of sodium hypochlorite (NaOCl) to the medium can achievesterility and reduce cost, but it may also affect plant growth in vitro. Therefore, this study aimed to investigate the effect of various concentrations of NaOCl intheculture medium on shoot multiplication and root induction of C. longa under aseptic conditions. The in vitro shoots were cultured on Murashige and Skoog (MS) medium supplemented with 2 mg/L benzyladenine (BA) to induce shoot formation and on MS medium without plant growth regulators to induce root development. The culture medium was sterilized either by autoclaving (control) or by adding NaOCl at concentrations of 0.1, 0.2, 0.4, 0.6, and 0.8 mL/L. The results showed that all treatments effectively sterilized the culture medium. There were no significant differences among treatments in shoot and root induction percentage, number of shoots and roots, or shoot and root length. The survival rate after transplantation was 100%. Thus, NaOCl at a concentration of 0.1 mL/L can be effectively used for media sterilization in the micropropagation of C. longa.

Effect of Butterfly Pea Flower Extract on Quality of Kefir Beverage

Fri, 31 Oct 2025 00:00:00 +0700

Butterfly pea flower extract (BFE) was used in this study as an alternate substrate for kefir beverage production.The interaction between different BFE concentrations (0, 0.25, 0.5, 0.75, and 1%) and kefir culture fermentation (beforeand after) was investigated.The results showed that anthocyanin content, total phenolic compounds, and DPPH radical scavenging activity in the samples increased with higher BFE concentrations, both before and after fermentation. The additionof 0.25% and 0.5% BFE increased the growth of lactic acid bacteria, whereas 0.75% and 1% BFE reduced bacterial growthand acid production compared with the control. Furthermore, the anthocyanin content of the butterfly pea beverage decreased after fermentation, while the total phenolic compound content and DPPH radical scavenging activity increased relative to prefermentation levels. Regarding color characteristics, the L^* value decreased with increasing BFE concentration, while the a^* and b^* values increased. After fermentation, the L^* values werehigher, and the a^*and b^* values werelower compared with pre-fermentation measurements. Overall, the results suggest that the additionof 0.5% BFE combined with kefir culture fermentation improved the beverage’s health-promoting properties, particularly by enhancing lactic acid bacteria counts, total phenolic compound content, and DPPH radical scavenging activity.

Characterization of Lactic Acid Bacteria as Probiotics for the Fermentation of Plant-Based Beverage

Ratchanu Meidong, Ratsupa Thammaporn, Sathit Panvilai — Fri, 31 Oct 2025 00:00:00 +0700

Plant-based probiotic products are a type of functional food. The objectives of this study were to screen lactic acid bacteria (LAB) and
evaluatetheir probiotic properties foruseas starter cultures in producing plant-based fermented beverages. Isolates LFU05a and LFU12b were selected for further study based on their high antimicrobial activity against the tested bacterial pathogens, survival after exposure to simulated gastrointestinal tract conditions (67.54-73.83%), good adhesion ability, absence of hemolytic activity, antibiotic susceptibility, and antioxidant activity (64.23-83.26%). LFU05a and LFU12b were identified as Lacticaseibacillus casei and Lactiplantibacillus pentosus, respectively. For prebiotic selection, modified ricestarch(MS) demonstrated a prebiotic effect by enhancing the growth of L. casei LFU05a and L. pentosus LFU12b. Furthermore, plant-based fermented beverages made from rice supplemented with 10% of pea protein isolate (PPI) and 1% of MS exhibited high probiotic viability (8.45 log CFU/ml). The results indicated that L. casei LFU05a and L. pentosus LFU12b are effective starter cultures for the production of plant-based probiotic beverages.

Glycerin Soap from Solanum incanum Leaf Extract in the School Botanical Garden for Inhibition of Staphylococcus aureus

Fri, 31 Oct 2025 00:00:00 +0700

This studyaimed to develop glycerinsoap products infused with bittereggplant leafextract (Solanum incanum L.),a medicinal plant known for its antibacterial properties against Staphylococcus aureus, the causative agent of abscess wounds. The research involved extracting active compounds using ethanol as a solvent and testing antibacterial efficacy through the disc diffusion method. Results showed that glycerin soap containing bitter eggplant leaf extract at a concentration of 60,000 micrograms per milliliter effectively inhibited S. aureus. Additionally, the formulated soap maintained a pH rangeof 6.8-7.2, exhibited a smooth texture, and dissolved slowly in water, making it suitable for use. These findings suggest that glycerin soap infused with bitter eggplant leaf extract can serve as a natural skincare alternative and holds potential for commercial product development.