Limonoid glucosides in citrus

Limonoid Glucosides in Citrus Seeds

“…1,2) As expected, we found inthis study that all the citrus seeds analyzed contained 17-{3-D-glucopyranosides of the major limonoids found in common citrus species (Table· I). They included glucosides of limonin, nomilin, obacunnone,deacetylnomilin, nomilinic acid and deacetylnomilinic acid.…”

“…1 -3) Ten such glucoside derivatives have been isolated from citrus and identified. 1,2) Surprisingly, these glucosides were present in high concentrations relative to the aglycones in citrus juices. 3,4) For example, commercial orange juices contain an average of 320 ppm of totallimonoid glucosides.…”

Purification of limonoid glucosyltransferase from navel orange albedo tissues

“…This natural debittering process was known for over a century, but the mechanism was not known until the discovery of limonoid glucosides in citrus tissues. In 1989, Hasegawa et al [3] found that limonoid aglycones were converted to their respective nonbitter glucosides in fruit tissues and seeds during late stages of fruit growth and maturation. Seventeen limonoid glucosides have been isolated and identified from + Author to whom correspondence should be addressed.…”

Flavonoid glycosides and limonoids from Citrus molasses

“…The column was thoroughly washed with water and then eluted with methanol to give a methanol eluate. The eluate was purified by successive silica gel column chromatography and HPLC using an ODS column to yield two new flavanonol glycosides (1 and 2) along with known compounds, narirutin (3) [13], hesperidin (4) [14], eriodictyol (5) [15] [17], nomilin (9) [12], and limonin (10) [18], citrusin III (11) [19], coniferin (12) [20], and abscisic acid (13) [21]. (Fig.…”