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Author(s) |
Tripathi, J.; Chatterjee, S.; Gamre, S.; Chattopadhyay, S.; Variyar, P. S.; Sharma, A. (FTD;BOD)
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Source |
LWT-Food Science & Technology, 2014. Vol. 59 (1): pp. 461-466 |
ABSTRACT
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Volatile
aroma compounds were isolated from pomegranate arils by high vacuum
distillation (HVD) and solvent extraction with diethyl ether. The HVD
distillate exhibited a fresh-fruity and characteristic pomegranate aroma
while the total ether extract was devoid of this note in its
concentrate. Gas chromatographyemass spectroscopy (GCeMS) analysis
revealed the presence of 3-octen-1-yl acetate, trans- 3-hexen-1-ol,
hexanol and 2-methyl pentanol only in the high vacuum distillate. Ether
extract was dominated by 2-heptanol, 2-nonanol and 3-methyl-2-butanol.
Based on olfactometric analysis of the HVD isolate, 3-octen-1-yl acetate
was identified as the key odorant of pomegranate. Chemical synthesis of
this compound, further confirmed its structure. Among the bound aroma
compounds, 2- phenylethanol (40%), alpha-terpineol (4.53%) and
2-heptanol (6.35%) were identified as the major compounds existing as
glycoconjugates. Identification of the character impact compound and the
occurrence of glycosidic precursors in pomegranate are being reported
here for the first time. |
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