Effect of UV-C radiation on biochemical changes of Longkong (Aglaia dookkoo Griff.) after harvesting
S. Kaewsuksaeng and C. Techavuthiporn
Book of Abstracts, Southeast Asia Symposium Quality and Safety of Fresh and Fresh Cut Produce Greater Mekong Subregion Conference on Postharvest Quality Management in Chains, August 3-5, 2009, Radisson Hotel, Bangkok, Thailand.
2009
บทคัดย่อ
The UV-C irradiation at 0 (control), 3.6 kJ/m2, 5.4 kJ/m2 and 7.2 kJ/m2 on phenolic content, Polyphenol oxidase (PPO) and phenylalanine ammonia lyase (PAL) of Longkong (Aglaia dookkoo Griff.) at 25°C was determined. UV-C irradiation at 3.6 and 5.4 kJ/m2 effectively inhibited pericarp browning relative to the control. PPO activity correspondingly decreased resulting to reduced phenolics oxidation indicated by retention of higher phenolics content than that in control. PAL also decreased and may have contributed to the reduction of browning as the most effective of UV-C irradiation was 5.4 kJ/m2.