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KMID : 0380620110430040419
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Korean Journal of Food Science and Technology
2011 Volume.43 No. 4 p.419 ~ p.425
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Analysis of Aroma Patterns in Muskmelon at Different Storage Temperatures Using a Mass Spectrometry-based Electronic Nose
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Youn Aye-Ree
Noh Bong-Soo
Kim Byeong-Sam
Kwon Ki-Hyun
Kim Jong-Hoon
Kim Sang-Hee
Choi Duck-Joo
Cha Hwan-Soo
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Abstract
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Changes in the flavor of muskmelons stored at different temperatures were examined to judge aroma patterns during storage. A mass-spectrometry based electric nose was used to distinguish the subtle differences in the muskmelon’s volatile compounds. The data were used for a discriminant function analysis (DFA), and then the partial least square algorithm was used for a quantitative analysis. Volatile components in the muskmelons increased with storage, and the first discriminant function score (DF1: r2=99.88%, F=3072.5) moved from a positive position to a negative position as the storage period increased. The proper point of maturity was anticipated as the 28th day at 0oC, 21st day at 4 and 7oC, and 14th day at 10oC. Also, using the DF1 score we could predict the general tendency (vitamin C, stem moisture, acidity) of the muskmelons. The electronic nose revealed that the major volatile compounds that changed during storage of the melons were ethyl ethyl acetate, butyl acetate, nonanol, dodecanoic acid, hexadecanoic acid and tricosane. The amount of volatile compounds detected increased during storage.
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KEYWORD
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Korean muskmelon (Cucumis melo L.), electronic nose, mass spectrometry, storage temperature, discriminant function analysis (DFA)
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