http://mfuir.mfu.ac.th:80/xmlui/handle/123456789/397 Sat, 25 Jul 2026 16:52:19 GMT 2026-07-25T16:52:19Z http://mfuir.mfu.ac.th:80/xmlui/handle/123456789/1862 Bioassay-guided isolation and identification of bioactive compounds from Leonurus japonicus houtt. extract Trirath Sukthawee Tharakorn Maneerat Thesis (M.Sc.) -- Applied Chemistry, School of Science. Mae Fah Luang University, 2020 Sat, 01 Jan 2022 00:00:00 GMT http://mfuir.mfu.ac.th:80/xmlui/handle/123456789/1862 2022-01-01T00:00:00Z http://mfuir.mfu.ac.th:80/xmlui/handle/123456789/1727 Development of topical film forming spray containing garcinia cowa leaf extract nanoemulsion for pharmaceutical and cosmeceutical products Kanyawadee Bureekaew Orawan Suwantong Thesis (M.Sc.) -- Applied Chemistry, School of Science. Mae Fah Luang University, 2021 Fri, 01 Jan 2021 00:00:00 GMT http://mfuir.mfu.ac.th:80/xmlui/handle/123456789/1727 2021-01-01T00:00:00Z http://mfuir.mfu.ac.th:80/xmlui/handle/123456789/1664 Bioactive compounds from goji berry for cosmetic products Chalinee Janta Tharakorn Maneerat Thesis (M.Sc.) -- Applied Chemistry, School of Science. Mae Fah Luang University, 2021 Fri, 01 Jan 2021 00:00:00 GMT http://mfuir.mfu.ac.th:80/xmlui/handle/123456789/1664 2021-01-01T00:00:00Z http://mfuir.mfu.ac.th:80/xmlui/handle/123456789/1450 Development for boron analysis method in soil using a fluorescence sensor Ketsuda Pawong Kanchana Watla-iad Boron is an essential soil micronutrient critical for plant physiology, supporting fruit development, cellular growth, and cell wall integrity. Both boron deficiency and excess are highly detrimental to plant health, causing stunted growth, fruit abnormalities, or toxicity symptoms, respectively. Therefore, accurate determination of soil boron concentrations is crucial for maintaining optimal nutrient levels to enhance crop productivity and ensure overall plant health. In this work, a homemade fluorescence spectrometer consisting of an LDR sensor and 365 nm light source was developed for effective boron detection in soil samples. N-(9-Anthrylmethyl)diethanolamine was synthesized and utilized as a fluorescent reagent specifically for boron ion detection. The fluorescent reagent volume, pH conditions, and incubation time parameters were systematically studied and optimized. Under these optimized experimental conditions, the analytical system demonstrated excellent linear correlation (R² = 0.9983) over a working concentration range of 5.7×10⁻⁷ to 5.7×10⁻³ M. Method validation was conducted at the 95% confidence level using soil samples (n = 7), with the developed sensor results statistically compared to those obtained by the standard ICP-MS method. The results showed no statistically significant difference between the developed sensor and ICP-MS methods, with the calculated t-value (1.343) being less than the critical t-value (2.447). The method achieved lower detection limits with reagent stability successfully maintained for 30 days. The developed sensor provides a viable, cost-effective alternative to ICP-MS for routine boron analysis in agricultural applications. Thesis (M.Sc.) -- Applied Chemistry, School of Science. Mae Fah Luang University, 2025 Wed, 01 Jan 2025 00:00:00 GMT http://mfuir.mfu.ac.th:80/xmlui/handle/123456789/1450 2025-01-01T00:00:00Z