Volatile Composition in Raspberry Cultivars Grown in the Pacific Northwest Determined by Stir Bar Sorptive Extraction−Gas Chromatography−Mass Spectrometry

Abstract

Twenty-nine volatile compounds in 'Chilliwack', 'Tulameen', 'Willamette', 'Yellow Meeker', and 'Meeker' raspberries were quantified using stir bar sorptive extraction (SBSE) paired with gas chromatography-mass spectrometry (GC-MS). Good correlation coefficients were obtained with most aroma-active compounds in raspberry, with quantification limits of 1 microg/kg. However, poor recoveries were observed for raspberry ketone and zingerone. Quantitative data showed that volatile concentrations varied for different cultivars. Large variations for alpha-ionone, beta-ionone, geraniol, linalool, and ( Z)-3-hexenol were observed in different raspberry cultivars. In addition, the volatile compositions in 'Meeker' raspberry grown at different locations also varied. The chiral isomeric ratios of raspberry ketone, alpha-ionone, alpha-pinene, linalool, terpinen-4-ol, delta-octalactone, delta-decalactone, and 6-methyl-5-hepten-2-ol were studied using a CyclosilB column. alpha-Ionone, alpha-pinene, delta-octalactone, and delta-decalactone had strong chiral isomeric preference, with more than 96% for one isomeric form. Much weaker chiral isomeric preference was observed for terpinen-4-ol, while linalool was almost a racemic mixture. Both growing locations and cultivars affect the isomeric ratio of linalool with a range of 37-51% for ( R)-linalool.

Influence of cluster zone leaf removal on Pinot noir grape chemical and volatile composition

“…A stir bar sorptive extraction-gas chromatography-mass spectrometry method (SBSE-GC-MS) was used to analyse the free-form volatile compounds in grape juice as described by Malowicki, Martin, and Qian (2008) with some modifications. Briefly, filtered grape juice (20 mL) was added in a 20 mL vial, and mixed with 20 lL of internal standard solution (9.4 mg/L of 3-hexanone, 2.4 mg/L of 4-octanol, and 1.3 mg/L of naphthalene).…”

Effects of methyl eugenol and raspberry ketone/cue lure on the sexual behavior of Bactrocera species (Diptera: Tephritidae)

“…Barthel et al (1957) reported the attraction of male B. cucurbitae to anisyl acetone, and subsequently Beroza et al (1960) reported that a derivative of this compound (CL) was a more potent lure. CL has not been found in nature, but its hydrolyzed form, RK occurs in various plants, including raspberries (Malowicki et al, 2008) and orchids (Nishida et al, 1993;Tan and Nishida, 2005;Tan, 2009) and has been shown to be an effective lure for B. cucurbitae males (Keiser et al, 1973).…”

Multiclass methods in the analysis of metabolomic datasets: The example of raspberry cultivar volatile compounds detected by GC–MS and PTR-MS

“…Literature studies about the volatile emission from raspberry are scarce and mainly concentrate on gas chromatographic techniques (Aprea et al, 2010;Guichard & Issanchou, 1983;Malowicki, Martin, & Qian, 2008). We already pointed out the viability of the PTR-MS approach for in vivo characterization of raspberry products in a recent study involving two raspberry cultivars (Aprea, Biasioli, Carlin, Endrizzi, & Gasperi, 2009).…”