ARS | Publication request: BIOFLAVONOID PROFILE IN EXOTIC CITRUS SPECIES

Submitted to: Abstract of International Horticultural Congress
Publication Type: Abstract Only
Publication Acceptance Date: April 15, 2002
Publication Date: August 15, 2002
Citation: BOTERO OMARY, M., KRUEGER, R., LI, Y., DAVID, P. BIOFLAVONOID PROFILE IN EXOTIC CITRUS SPECIES. ABSTRACT OF INTERNATIONAL HORTICULTURAL CONGRESS. 2002.

Technical Abstract: The levels of the flavanones naringin, hesperidin, narirutin, eriocitrin, neohesperidin and neoeriocitrin, the flavone diosmin and the polymethoxylated flavone tangeretin were evaluated in fruits of several exotic citrus (citron, pummelo, sour orange, papeda, mandarin, and lemon). Samples were collected at the USDA-ARS Citrus National Clonal Germplasm Repository (Riverside, CA). Analyses were conducted using high-pressure liquid chromatography. The highest total flavonoid content was detected in sour oranges, mandarins and pummelos, while low to non-detectable levels were found in citron, papeda and lemon cultivars. Average total bioflavonoid values on a dry weight basis were 4.5%, 4.5% and 2.3% in sour oranges, mandarins and pummelos, respectively. Individual flavonoids varied among species. Naringin, neohesperidin, and neoeriocitrin were found in some sour orange cultivars. Hesperidin was the only flavonoid detected in mandarin. Pummelos showed a diverse flavonoid profile. Some pummelo varieties had up to 5 different flavonoids (narirutin, naringin, hesperidin, hesperidin, eriocitrin, neohesperidin, neoeriocitrin).Citrus flavonoids have a wide variety of clinical applications. This information should prove useful to the nutraceutical industry in identifying alternative sources of flavonoids.