Thai Science and Technology Journal

The Effectiveness of Herbal Compress Gel on Pain in Volunteers with Lomplaipatakart Sanyan 4 of the Back

Sansanee Meemuenpon — 2026-02-26

This study aimed to investigate the skin irritation potential of a herbal compress gel in healthy participants, evaluate its effectiveness in relieving pain, and assess volunteers’ satisfaction with Lomplaipatakart Sanyan 4 (back syndrome) after using the herbal compress gel. The gel was applied once daily for three consecutive days to 30 participants. Pain levels were recorded using a numerical rating scale (NRS), and cervical range of motion (ROM) was measured using a goniometer. Data were analyzed using paired t-tests. The results showed a statistically significant reduction in pain levels, from a pre-treatment mean of 5.93 ± 1.87 to a post-treatment mean of 3.18 ± 1.45 (p < 0.05). The average cervical ROM also significantly improved in all measured directions. Specifically, the pre-treatment ROM values were 41.17 ± 7.43° (head flexion), 44.60 ± 7.12° (head extension), 28.23±6.16° (right lateral flexion), and 27.33 ± 8.66° (left lateral flexion). After treatment, these values increased to 50.93 ± 8.35°, 51.80 ± 7.28°, 37.13 ± 5.58°, and 36.4 ± 5.60°, respectively (p < 0.05). No skin irritation was observed, and participants expressed high satisfaction with the herbal compress gel.

In vitro Evaluation of Antioxidant, Anti-Inflammatory, Wound Healing Activities and GC-MS Analysis of Wound Healing Oil Remedy

Chawapon Phoomphong — 2026-02-26

This study investigated the in vitro antioxidant and anti-inflammatory activities, as well as the chemical composition, of the wound healing oil remedy (WH oil), using gas chromatography-mass spectrometry (GC-MS) analysis. The results of the DPPH and ABTS assays indicated that WH oil exhibited low antioxidant activity in both methods. The total phenolic content was 0.476 ± 0.323 mg of gallic acid equivalents (GAE) per gram of WH oil. GC-MS analysis identified nine chemical constituents, with borneol being the predominant compound at 44.426%. No anti-inflammatory activity of WH oil was observed via nitric oxide inhibition in RAW 264.7 macrophage cell cultures. However, the wound healing efficacy in human skin fibroblast cells was 0.63 times that of vitamin C, and the oil demonstrated cellular safety. These findings suggest that the wound healing oil remedy produced via the simmering oil process exhibits stimulatory effects on human skin fibroblast cells, which are important factors influencing

Chemical Constituents, Total Phenolic Content and Total Flavonoid Content in Thai Cinnamon Bark Ethanol Extract

Sununta Srisopon — 2026-02-26

Thai cinnamon (Cinnamomum bejolghota (Buch. Ham.) Sweet) is an aromatic wood tree. It possesses medicinal properties such as relieving dizziness, nourishing the heart, promoting digestion, inducing sweating, treating fever, and alleviating diarrhea. The bark is an ingredient in several traditional medicine formulations, including Ya-hom Thiphosot, Ya-hom Navakot, Ya-hom Inthachak, Ya Manthathaat, Ya Wisamphaya Yai, Ya Mahakan hemorrhoid, and Ya Suksaiyat, all of which are listed on the National List of Essential Medicines. It is also used as an ingredient in decoctions for treating colds and relieving symptoms associated with COVID-19. The ethanol extract of Thai cinnamon bark (CBD-1) has an inhibitory effect on the growth of the SARS-CoV-2 Omicron variant. To support the development of Thai herbal products, this study aimed to investigate the phytochemical groups, chemical constituents, and active compound content of CBD-1. The results showed that CBD-1 contains phenols, flavonoids, and terpenoids/steroids. GC-MS analysis of CBD-1 identified α-copaene (5.84%), α-bergamotene (3.77%), β-bisabolene (3.12%), palmitic acid (2.97%), β-caryophyllene (2.53%), α-muurolene (2.47%), (+)-d-cadinene (2.40%), (-)-α-amorphene (2.38%), (+)-cyclosativen (1.88%), ethyl linoleate (1.71%), and (+)-g gurjunene (1.67%). UV-Vis spectrophotometry revealed a total phenolic content of 169.18±6.60 mgGAE/g and a total flavonoid content of 269.59±1.59 mgRE/g. CBD-1 contains phytochemical compounds and bioactive constituents at levels that warrant consideration for further development into health supplements with potential activity against free radicals and viruses such as SARS-CoV-2.

Biomass Carbon Stocks of Economic Trees at Sakon Nakhon Rajabhat University

Uraiwan Phoonaploy — 2026-02-26

This study aimed to investigate species diversity, biomass estimation, carbon storage, carbon sequestration, and oxygen production of economic trees at Sakon Nakhon Rajabhat University. All trees were identified, and their diameter at breast height and total height were measured. The biomass was calculated using allometric equations. Carbon stock was subsequently estimated from the biomass, while the carbon sequestration was determined by multiplying the carbon stock by a conversion factor of 3.67. Oxygen production by the trees was also evaluated. The results revealed a total of 2,115 trees, comprising 23 species from 12 families within the study area. The most common species were Cassia fistula L., Tamarindus indica L., Lagerstroemia speciosa (L.) Pers., Dipterocarpus alatus Roxb. ex G.Don and Mangifera indica L., accounting for 22.08%, 10.21%, 8.56%, 7.38%, and 7.09% of the total, respectively. The total biomass was estimated at 1,765,830.68 kg, with an average of 834.91 Kg per tree. The total carbon stock was 829,940.35 KgC, averaging 392.41 KgC per tree. Total carbon sequestration was 3,037,581.94 KgCO₂ , with an average of 1,436.21 KgCO₂ per tree. In addition, the total oxygen production was estimated at 4,427,394.96 KgO₂, with an average of 2,093.33 KgO₂ per tree. The plant species with the highest capacities for carbon storage, carbon sequestration, and oxygen production were identified as Samanea saman (Jacq.) Merr.), Tamarindus indica L., Tectona grandis Linn.f., Dipterocarpus alatus Roxb. ex G.Don, and Alstonia scholaris (L.) R. Br., respectively.

Effects of Pest Management Strategies on the Insect Pest Abundance, Plant Growth and Yield of White Radish

kanjana Chantab — 2026-02-26

Insect pests are a persistent problem that causes significant damage to crops. Selecting effective pest control methods is therefore crucial to maintaining crop productivity. This study aimed to evaluate the effects of four pest management strategies on white radish: no management, chemical control, application of plant fermented extract, and application of bio-pesticides. The results showed that pest management methods influenced the observed number of insect pests. In particular, the treatments tended to reduce populations of leaf-damaging insects but had little effect on stem-boring insects. Among the treatments, the use of plant-fermented extract significantly promoted plant growth parameters, resulting in the highest leaf width (5.94 ± 0.54 cm) and leaf length (16.52 ± 0.99 cm). These values were significantly greater than those in the chemical control and untreated plots, but not significantly different from the bio-pesticide treatment. Furthermore, the plant extract treatment produced the highest tuber weight and yield per rai (244.67 ± 27.39 g per tuber and 2,348.8 ± 262.91 kg per rai, respectively), significantly outperforming the bio-pesticide, chemical, and untreated control treatments (which had the lowest yield). This method offers a sustainable alternative for managing insect pests.

Efficiency of some Synthetic Insecticides on Brown Planthopper (Nilaparvata lugens (Stål)) in Irrigated Paddy Fields at Phitsanulok Province

Jadsadapong Kunjaroenruk — 2026-02-26

The brown planthopper (BPH), Nilaparvata lugens (Stål) (Hemiptera: Delphacidae), is one of the most destructive insect pests of rice in Thailand, especially in irrigated rice paddy fields. BPH population trends change annually due to insecticide resistance and climate change. Therefore, continuous assessment of commonly used insecticides is necessary. Accordingly, the efficiency and toxicity of thirteen synthetic insecticides, including fenobucarb 50% EC, benfuracarb 20% EC, carbosulfan 20% EC, profenofos 50% EC, triazophos 40% EC, ethiprole 10% SC, cypermethrin 35% EC, lambda-cyhalothrin 2.5% EC, etofenprox 20% EC, dinotefuran 10% SL, thiamethoxam 25% WG, clothianidin 16% SG, and buprofezin 40% SC against BPH were evaluated, along with the toxicity of the effective insecticides. The results showed that fenobucarb, benfuracarb, profenofos, and triazophos caused 100 % mortality in BPH within 24 hours, comparable to chlorpyrifos (positive control) in controlling BPH. Their respective LC₅₀ values were 612.15, 187.14, 621.31, and 1,409.08 ppm, respectively

Effect of Calcium Sulfate and Magnesium Sulfate on Physical Properties of Gluten-Free Instant Noodle Made from Mixed Flours and Pea Protein

Saitarntarm Wetpada — 2026-02-26

The objective of this study was to investigate the effect of calcium and magnesium salts on the physical properties of gluten-free instant noodles made from a mixture of rice flour, corn flour, flaxseed flour, and pea protein. Calcium sulfate and magnesium sulfate were added at concentrations of 0-0.4% (w/w). The ingredients were mixed, and the resulting dough was kneaded and pressed through a noodle maker into boiling water at 97 oC for 2 minutes. The obtained noodles were allowed to rest for 1 hour before being dried in a tray dryer at 70 oC for 3 hours. The results showed that the water activity of the treatment ranged from 0.25-0.32. Noodles containing 0.4% calcium sulfate had the highest water activity (p≤0.05). Cooking time increased with increasing concentration of calcium sulfate, whereas it decreased with increasing concentration of magnesium sulfate. The hardness of noodles increased with increasing concentration of calcium sulfate or magnesium sulfate, with noodles containing 0.4% magnesium sulfate exhibiting the highest hardness (p≤0.05). The addition of calcium sulfate or magnesium sulfate significantly decreased noodle adhesiveness (p≤0.05). The brightness of the noodles containing magnesium sulfate was lower than that of the control (p≤0.05).

Physicochemical Properties of Various Starches and Flours and the Effect of Quinoa Flour on Composite Gel Texture

Vorada Prueksavanich — 2026-02-26

This research aimed to investigate the chemical composition and physicochemical properties of tapioca starch, mung bean starch, rice flour, and quinoa flour, as well as the textural characteristics of quinoa composite flour gels prepared from these four ingredients. The flour mixtures studied had weight ratios of 16:8:26:0, 16:8:23:3 and 16:8:20:6, respectively. The results showed that quinoa flour had the highest protein and fat contents at 21.86% and 9.17%, respectively. Mung bean starch exhibited the highest amylose content at 33.76%, whereas quinoa flour had the lowest amylose content at 13.75%. Increasing temperature resulted in higher swelling power and solubility for all starches and flours. Tapioca starch and mung bean starch showed greater swelling power than rice flour and quinoa flour in the temperature range of 75–95°C, while quinoa flour exhibited the highest solubility. Rice flour had the highest gelatinization temperature (T_p), whereas quinoa flour required the lowest gelatinization enthalpy (∆H). Regarding pasting properties, quinoa flour had the lowest breakdown and setback value, at 3.22 RVU and 11.78 RVU, respectively. Among the individual starch and flour gels, tapioca starch gel had the lowest hardness. The analysis of the physical properties of gel prepared from composite flour revealed that replacing rice flour with quinoa flour tended to decrease gel hardness.