Evaluation of aroma compounds contributing to muskmelon flavor in Porapak Q extracts by aroma extract dilution analysis.
The flavor of the Miyabi variety of Japanese muskmelon was extracted according to the Porapak Q column method (PQM) and evaluated by using aroma extract dilution analysis (AEDA) method. The overall odor of the PQM extracts was perceived as having a natural muskmelon-like odor, suggesting that the PQM was able to extract volatile compounds in muskmelon fruit without degradation of original flavor. Forty-six odorant compounds [Kovats index (KI), 961 < or = KI < or = 2605] were found by GC-sniffing in PQM extracts, confirming the effectiveness of PQM in trapping a wide range of volatile compounds in muskmelon flavor. The 46 odorants could be divided into three groups on the basis of their odor attributes: fruity note (KI < 1300); green, grassy, or cucumber-like note (1300 < KI < 2020); and sweet note (KI > 2020). When the original extracts were diluted in AEDA analysis, seven odorants could still be detected by GC-sniffing at a flavor diluation (FD) factor of 128 or above: one had a fruity note (compound 3); four had a cucumber-like, green, or grassy note (compounds 12, 17, 21, and 23); and two had a sweet note (caramel-like or yakitori-like) (compounds 32 and 34).
School of Bioresources, Hiroshima Prefectural University, Shobara, Hiroshima 727-0023, Japan. yhatata@bio.hiroshima-pu.ac.jp
Yasuyoshi
Y
Hayata
Takayuki
T
Sakamoto
Chamorn
C
Maneerat
Xinxian
X
Li
Hiroshi
H
Kozuka
Koji
K
Sakamoto
D002849:Chromatography, Gas / Q000379:methods*; D028463:Cucumis melo / Q000737:chemistry*; D005638:Fruit / Q000737:chemistry*; D008401:Gas Chromatography-Mass Spectrometry; D006801:Humans; D009812:Odorants / Q000032:analysis*; D010936:Plant Extracts / Q000737:chemistry; D012903:Smell
D010936:Plant Extracts