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United States Department of Agriculture

Agricultural Research Service

Research Project: Improving the Quality of Grapes, Other Fruits, and their Products through Agricultural Management

Location: Horticultural Crops Research

Title: Chemotaxonomy of Black Raspberry: deception in the marketplace?

Authors
item Lee, Jungmin
item Dossett, Michael -
item Finn, Chad

Submitted to: International Conference of Polyphenols
Publication Type: Proceedings
Publication Acceptance Date: June 24, 2014
Publication Date: September 2, 2014
Citation: Lee, J., Dossett, M., Finn, C.E. 2014. Chemotaxonomy of Black Raspberry: deception in the marketplace?. International Conference of Polyphenols. 2014:347-348.

Interpretive Summary: This presentation will focus on the phytochemical portion of our research into breeding commercial black raspberry (Rubus occidentalis L.; blackcap) cultivars with better fruit quality. Over the last eight years, we have analyzed the fruit from over 1,000 black raspberry genotypes, and found the anthocyanin content to range from 39 to 996 mg of cyanidin-glucoside/100 mL (a 25-fold range). The presentation will also include how (1) the identity of the major black raspberry anthocyanin was previously mischaracterized; (2) characterizing genetic variability in anthocyanins aids plant breeding to develop new cultivars; (3) a wild black raspberry genotype with unique anthocyanin was first discovered by our group; (4) differences (plants, fruits, and anthocyanins) in anthocyanin chemistry between Rubus coreanus Miquel and R. occidentalis were characterized; and (5) anthocyanin profiles can be used to detect possible authenticity issues in Korean black raspberry products and US dietary supplements. This work was partially funded by a Specialty Crop Research Initiative (SCRI) grant number 2011-51181-30676 from USDA-National Institute of Food and Agriculture (NIFA).

Technical Abstract: This presentation will focus on the phytochemical portion of our research into breeding commercial black raspberry (Rubus occidentalis L.; blackcap) cultivars with better fruit quality. Over the last eight years, we have analyzed the fruit from over 1,000 black raspberry genotypes, and found the anthocyanin content to range from 39 to 996 mg of cyanidin-glucoside/100 mL (a 25-fold range). The presentation will also include how (1) the identity of the major black raspberry anthocyanin was previously mischaracterized; (2) characterizing genetic variability in anthocyanins aids plant breeding to develop new cultivars; (3) a wild black raspberry genotype with unique anthocyanin was first discovered by our group; (4) differences (plants, fruits, and anthocyanins) in anthocyanin chemistry between Rubus coreanus Miquel and R. occidentalis were characterized; and (5) anthocyanin profiles can be used to detect possible authenticity issues in Korean black raspberry products and US dietary supplements. This work was partially funded by a Specialty Crop Research Initiative (SCRI) grant number 2011-51181-30676 from USDA-National Institute of Food and Agriculture (NIFA).

Last Modified: 10/25/2014
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