ISHS Acta Horticulturae 804: Europe-Asia Symposium on Quality Management in Postharvest Systems - Eurasia 2007
PERFORMANCE OF TIO2-COATED FILM IN DECOMPOSITION OF DURIAN FLAVOR VOLATILES |
| Authors: | C. Chawengkijwanich, D. Viboonratanasri, C. Pokhum, K. Sa-nguanpuag, K. Tanprasert |
| Keywords: | titanium dioxide, TiO2-coated film, durian flavor, volatile compound |
| Abstract:
Durian fruit has a strong flavor. Its odor emits into surrounding atmosphere even when the husk is intact or when stored in film packaging. A TiO2-coated film was studied as an active packaging for decomposition of durian flavor volatiles in package atmosphere. Research showed TiO2-coated film worked during UVA light illumination and that it was effective in decomposition of durian flavor volatiles. After 1 h of light illumination, the durian volatile compounds in a package atmosphere was extracted by solid-phase microextraction (SPME) with PDMS/DVB fiber coating for 30 min. and analyzed by GC-MS. The results showed that TiO2-coated film decreased the concentration of headspace total volatile compounds of durian compared to uncoated film. Sulfur compounds such as ethanethiol and s-ethyl ethanethioate, including major ester compounds of durian flavor were decomposed by the photocatalytic reaction of TiO2-coated film. Sniffing of durian flavor in headspace packaging by panelists revealed that durian flavor was undetectable in TiO2-coated film after 1 h of UVA light illumination, while strong odors were detected in headspace packaging of uncoated film treatment regardless of light illumination. | |
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