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ARS Home » Pacific West Area » Corvallis, Oregon » Horticultural Crops Research Unit » Research » Publications at this Location » Publication #167168
Title: AROMA EXTRACT DILUTION ANALYSIS OF CV. MEEKER (RUBUS IDAEUS L.) RED RASPBERRIES FROM OREGON AND WASHINGTON

Author
item KLESK, K - OREGON STATE UNIVERSITY
item QIAN, M - OREGON STATE UNIVERSITY
item MARTIN, ROBERT

Submitted to: Journal of Agricultural and Food Chemistry
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 4/1/2004
Publication Date: 5/1/2004
Citation: Klesk, K., Qian, M., Martin, R.R. Aroma extract dilution analysis of cv. meeker (rubus idaeus l.) red raspberries from oregon and washington. Journal of Agricultural and Food Chemistry. 2004. v52 p. 5155-5161.

Interpretive Summary: This study identifies baseline amounts of 75 compounds that contribute to the aroma of 'Meeker' red raspberry that was grown in two different environments. The purpose of the work was to develop background information that will be used in future studies on the impact of viruses and cultural practices on fruit quality of 'Meeker' red raspberry. This work also provides the data required to completely evaluate the fruit of transgenic 'Meeker' red raspberries. There were differences between the two locations; fruit from the cooler Fraser River valley in Northern Washington had higher levels of some compounds and lower level of others compared to fruit from the Willamette Valley in Oregon. This study shows that baseline values must be taken on fruit grown in the same environment as the test fruit and one set of baseline values will not be suitable for all regions where raspberries are grown.

Technical Abstract: The aromas of 'Meeker' red raspberry from Oregon and Washington were analyzed by aroma extract dilution analysis. Seventy-five aromas were identified (some tentatively) by mass spectrometry and gas chromatography-retention index; 53 were common to both sources, and 26 have not been previously reported in red raspberry. Twenty-one compounds had equivalent odor impact in both samples: 2,5-dimethyl-4-hydroxy-3-(2H)-furanone, hexanal, acetic acid, cis-3-hexenal, methional, cis-3-hexenol, linalool, butanoic acid, ethyl 2-methylpropanoate, t-2-hexenal, hexyl formate, 2,3-butanedione, heptanal, thiophene, benzaldehyde, geraniol, and 4-(p-hydroxyphenyl)-2-butanone. 'Meeker' from Oregon had 14 odorants in larger amounts than 'Meeker' from Washington. 'Meeker' from Washington had 16 odorants in larger amounts than 'Meeker' from Oregon.