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--- nephelium_lappaceum_l [2021/01/22 09:41]
andreas
+++ nephelium_lappaceum_l [2022/05/29 09:46]
andreas
@@ Zeile 1: / Zeile 1: @@
-Nephelium lappaceum L. - Sapindaceae - rambutan, **Rambutan**
+Nephelium lappaceum L. - Sapindaceae - rambutan, rhambutan, **Rambutan**
 Evergreen tree, 12-20m high, native to Indonesia and Malaysia. As a member of the Sapindaceae family it is closely related to several other edible tropical fruits including the lychee ([[litchi_chinensis_sonn|Litchi chinensis]]), longan ([[dimocarpus_longan_lour|Dimocarpus longan]]), pulasan (Nephelium ramboutan-ake), and mamoncillo (Melicoccus bijugatus).
@@ Zeile 9: / Zeile 9: @@
 [Characterization of volatiles in rambutan fruit (Nephelium lappaceum L.)., Ong, P.K., Acree, T.E., Lavin, E.H., Journal of agricultural and food chemistry, 46(2), 1998, 611-615]
-| {{:damascenone.jpg| β-damascenone}} \\ β-damascenone | {{:isocitronellol.jpg| isocitronellol}} \\ isocitronellol \\ (rhodinol, alpha citronellol)|
+| {{:damascenone.jpg| β-damascenone}} \\ β-damascenone | {{:et2mebutanoat.jpg|}} \\ ethyl 2-methylbutyrate | {{hdmf.jpg| furaneol }} \\ furaneol | {{:vanillin.jpg| vanillin}} \\ vanillin | {{:isocitronellol.jpg| isocitronellol}} \\ isocitronellol \\ (rhodinol, alpha citronellol)|
+The major volatiles found by GC/FID contributed very little to the GC/O chromatogramm. Most potent odorants were ethyl 2-methylbutyrate, furaneol, m-cresol, guaiacol, nonanal, phenylethanol, heptanoic acid, maltol, (E/Z)-2-nonenal, phenylacetic acid, hydrocinnamic acid, (E)-4,5-epoxy-(E)-2-decenal, vanillin, β-damascenone, cinnamic acid, and δ-decalactone. \\
+"...β-damascenone was the only carotenoid derived compound in rambutan above its odor threshold and it was not detectable in the GC/FID chromatogram." \\
+[Friedrich, Jane E., and Terry E. Acree. "Analyzing Carotenoid-Derived Aroma Compounds Using Gas Chromatography-Olfactometry.", in: Winterhalter, Peter, and Russell L. Rouseff, eds. Carotenoid-derived aroma compounds. American Chemical Society, 2001, 67-74]
 Of the ‘Rong-rien’ rambutan (Nephelium lappaceum L. var Rong-rien) fruit flesh volatiles, isocitronellol (rhodinol, alpha citronellol; 29%, //floral, intense rose like, weak fruit aroma//), 3-hydroxy-2-butanone (14%), 1-propene-1-thiol (12%), 4-tridecyl valerate (6%), 3-methyl-2-hexanal (6%), and pentanal (4%) were most abundant; δ-decalactone (3%), benzaldehyde (3%), acetaldehyde (2%), and pentyl acetate (1%) were also present. \\

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