Dipping of Nile Tilapia (Oreochromis niloticus) fillets in the mixture solution of 2.0% sodium pyrophosphate and 0.5%sodium triphosphate and coating with 0.00.30.60.9 % chitosan solutions drained packed in polyethylene bags well sealed stored at 4๐C for 15 days were evaluated. The results showed the moisture of all sample did not statistically difference and quite constant during storage. The pH and TVB-N value increased with the storage period for all sample Coating with low concentration of chitosan resulted in lower pH fillets than higher concentration. The decreasing of pH resulted in decreasing of Water Holding Capacity (WHC) of the fillets. Increasing chitosan concentration increased pH and WHC. The oxidation of the samples revealed that the Thiobarbituric acid(TBA) of 0.3% chitosan was maximum and lower with increasing of chitosan concentration. Increasing of TBA may be because of acidity of chitosan solution activated fat hydrolysis. Nevertheless chitosan coating effectively inhibited growth of microorganism in the fillets.

Student satisfactory survey in Food Processing courses held at Rajamangala university of Technology Srivijaya was carried out. Twenty four undergraduate students in the program of Food Science and Technology were selected and evaluated the questions based on course content course material teaching techniques; lectures and practical part report and presentation and field trip.The satisfactory on the course content was found to be very high level. Teaching techniques were found to be no statistically significant (p<0.05). However students had the most preference toward the lectures giving by using Power Point Presentation as a teaching technique. On the other hand practical part of the course was found to be very useful appropriate in daily life and important skill for a professional food scientist. Notablyreport and presentation was very useful to improve English reading Thai editing and presentation skill. Field trip study was suggested to be significantly additional learning experience as well as course assignment presentation. In addition good relation between lectures and students had highly significant important for enhancing learning process.