This research aims to optimize the production process of gamma-aminobutyric acid (GABA) in fermented pineapple juice using probiotics and acetic acid bacteria (AAB), which are microorganisms with the potential to enhance GABA levels. This process has been developed to improve the nutritional value of fermented pineapple juice and to increase the economic value of Thai pineapples, which have long suffered from low market prices. This study focuses on determining the optimal conditions for GABA production by examining factors such as sugar content, pH levels, fermentation duration, and L-glutamate concentration, as well as the co-cultivation of probiotics and acetic acid bacteria. The experiments are conducted using controlled fermentation techniques, and the bioactive components of the fermented juice are analyzed with advanced instruments such as HPLC and GC-MS. The findings of this research are expected to contribute to the development of formulations and production processes for a high-GABA pineapple-based functional beverage. This product could offer health benefits such as stress reduction, cognitive function enhancement, and relaxation while also strengthening the potential of Thailand’s fermented food and beverage industry.
การพัฒนากระบวนการผลิตกรดแกมมา-อะมิโนบิวทิริก (γ -aminobutyric acid) ในเครื่องดื่มจากน้ำสับปะรดด้วยโพรไบโอติกซึ่งเน้นการใช้แบคทีเรียกรดอะซิติกและโพรไบโอติกเพื่อเพิ่มประสิทธิภาพการผลิต GABA โดยที่มาของการวิจัยนี้เกิดจากความต้องการแก้ไขปัญหาราคาสับปะรดของไทยซึ่งมีราคาต่ำมาเป็นเวลานาน การผลิตเครื่องดื่มที่มี GABA สูง มีประโยชน์ต่อสุขภาพ เช่น ช่วยในการผ่อนคลาย ลดความวิตกกังวล และส่งเสริมการทำงานของสมอง
คณะวิศวกรรมศาสตร์
In Thailand, the quantity of old tires has been increasing annually, posing a significant environmental challenge due to their non-biodegradable material. However, old tires contain an internal porous structure, which suggests their potential application as sound-absorbing materials. Porosity is a key characteristic that enables materials to trap sound waves, making them effective for noise reduction. Therefore, this study aims to investigate and develop sound-absorbing materials from old tire rubber powder. The methodology involved mixing old tire powder with fresh latex at a ratio of 1:2, followed by drying at a temperature of 120°C for four hours. Subsequently, the physical properties influencing sound absorption, including density, porosity, and water absorption, were analyzed. The results indicated that the sound-absorbing material produced from old tire rubber powder showed a density of 0.96 g/cm³, a porosity value of 0.45, and a water absorption of 11.03%. Therefore, the findings suggest that old tire rubber powder has the potential to be effectively utilized as a sound-absorbing material.
คณะอุตสาหกรรมอาหาร
A new jelly snack alternative for health-conscious individuals—delicious, convenient, and gut-friendly. Rich in probiotics and prebiotics, packed with antioxidants, and essential vitamins. Suitable for health enthusiasts and lactose-intolerant individuals. Free from artificial colors and flavors
คณะวิศวกรรมศาสตร์
This study focuses on the use of ceramic tile powder as a cement replacement material in concrete at an appropriate ratio. The objective is to investigate the properties of replacing cement with tile powder and to determine the optimal mixing ratio of tile powder in cement mortar that can yield properties equivalent to or superior to conventional cement mortar. The experiment involved preparing cement mortar samples by replacing cement with two types of ceramic tile powder waste from tile manufacturing plants: waste tile powder and rectified tile powder. The mixing process was divided into two parts: Part 1 used a cement and tile powder ratio, while Part 2 used the results of the strength analysis from Part 1 to adjust the ratio accordingly. Various properties were tested, including specific gravity, normal consistency, setting time, tensile strength, and compressive strength. The results of the study revealed that replacing of cement with rectified tile powder provided the highest tensile and compressive strength, comparable to that of conventional cement mortar. Therefore, the use of ceramic tile powder as a replacement can enhance compressive strength while reducing cement usage, which has positive environmental implications by decreasing greenhouse gas emissions from cement production. Furthermore, this approach promotes the effective use of waste materials from the ceramic industry, contributing to the sustainability of the construction industry.