This research aimed to develop the mixed tea from longan peels and seeds. Population studied were longan farmers who planted longan and preserved the longan product in Ampur Wang Nam Yen, Sa Kaeo Province. From the results, it was found that from By-product in the production of dehydrated longan, longan peels and seeds, which can be processed into ready-to-drink powdered tea. This not only helps reduce waste from the production process but also contributes to generating additional income from these by-products.
จากการได้เข้าไปศึกษาดูงานที่ ชุมชนเกษตรกรผู้ปลูกลำไย อำเภอวังน้ำเย็น จังหวัดสระแก้ว ได้พบปัญหาคือราคาลำไยตกต่ำ ขายแล้วขาดทุน ส่งผลให้เกษตรกรได้แก้ปัญหา ด้วยการนำลำไยไปทำลำไยอบแห้ง ซึ่งจากกระบวนการผลิตลำไยอบแห้ง จะมีผลิตภัณฑ์ผลพลอยได้คือเปลือกและเมล็ดลำไย ซึ่งสามารถนำมาแปรรูปเป็นชาผงสำเร็จรูปพร้อมดื่มได้
คณะสถาปัตยกรรม ศิลปะและการออกแบบ
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คณะวิทยาศาสตร์
A new colorimetric assay for the rapid detection of tannic acid in beverage samples based on displacement phenomenon of aggregated gallic acid-modified platinum nanoparticles is developed for the first time. PtNPs were functionalized with gallic acid, promoting the formation of the green-hued aggregated nanoparticles. While colorimetry offers a rapid method for identifying tannic acid, challenges remain in sensitivity and accuracy of detection on the PtNPs colorimetric probe, particularly in the presence of anthocyanin interferences. To address this, we developed a sample preparation method to degrade anthocyanin in beverages. Tannic acid was easily displaced onto the gallic acid-coated PtNPs surfaces, causing dispersion and resulting in a visible color change from green to orange−brown. Under the optimal conditions, the colorimetric sensor exhibited a linear response in the range of 1−2,000 µmol L−1 (R2 = 0.9991). The limit of detection (LOD) and the limit of quantification (LOQ) were found at 0.02 and 0.09 µmol L−1, respectively. The proposed sensor expressed superior selectivity over other interfering substances and demonstrated excellent precision with a relative standard deviation (RSD) of 1.00%−3.36%. More importantly, recoveries ranging from 95.0−104.7% were obtained, indicating the capability of proposed colorimetric sensor to detect tannic acid rapidly and accurately in real beverage samples.
คณะเทคโนโลยีการเกษตร
The innovation of the vertical aquaponics system for rearing golden apple snails integrating with vegetable cultivation by using substrates to water treatment. The system aims to maximize the use of vertical space, save water, and produce safe vegetables for consumption or commercial purposes, and to support living things. The golden apple snail excretes wastes/leftover food scraps that are filtered on the substrates used for water treatment. Meanwhile, natural bacteria help change these wastes into nutrients that plants can use. Therefore, the system is environmentally friendly.