Influence of technological processing on apple aroma analysed by high resolution gas chromatography–mass spectrometry and on-line gas chromatography-combustion/pyrolysis-isotope ratio mass spectrometry

Advances in Distilled Beverages Authenticity and Quality Testing

“…In this context, several studies focused the chemical characteristics, volatile and microbiological aspects of vegetal matrices used in production of distilled beverages [20,[51][52][53][54]. The applied techniques in volatile compounds assessment are infrared spectroscopy [55], gas-chromatography coupled with mass-spectrometry [51,52,56,57] and gas-chromatography with flame ionisation detector [53,58].…”

Odor and taste thresholds of potential carry-over/off-flavor compounds in orange and apple juice

“…As to apple juice aroma constituents, in Table 2 average amounts and ranges of selected aroma constituents are summarized; a more comprehensive insight has been provided recently (Elss et al, 2006). Surprisingly, in industrial single strength apple juices three of 37 analyzed samples contained small amounts of limonene (maximum value 0.2 mg/l); a-terpineol was detected in two samples (maximum value 0.05 mg/l).…”

“…limonene (from 18 000 to 191 000 mg/l in orange juice, Moshonas & Shaw, 1994), g-decalactone (from 25 to 156 mg/kg in peach fruits, Horvat et al, 1990) and methyl 2-methylbutanoate and ethyl 2-methylbutanoate (from o1 to 100 mg/l, e.g. in apple juice, Elss, Preston, Appel, Heckel, & Schreier, 2006) as well as the off-flavor compounds a-terpineol and carvone, both the latter known to be derived from limonene (Haug, 2003;Pino, 1982;Popken, Dechent, & Gurster, 1999).…”

High-pressure (vapour+liquid) equilibria for ternary systems composed by {(E)-2-hexenal or hexanal+carbon dioxide+water}: Partition coefficient measurement

“…Moreover, Koch et al [7] demonstrated the importance of (E)-2-hexenal in the odour of apple essences. The concentration of these compounds in apple juice, and essence apple varies from (1 to 2400) mg·dm -3 [6,[8][9][10][11].…”