Limonin

Chemical compound From Wikipedia, the free encyclopedia

Limonin is a limonoid, and a bitter, white, crystalline substance found in citrus and other plants. It is also known as limonoate D-ring-lactone and limonoic acid di-delta-lactone. Chemically, it is a member of the class of compounds known as furanolactones.

Quick facts Names, Identifiers ...
Limonin
Ball-and-stick model of limonin
Names
Preferred IUPAC name
(2aR,4aR,4bR,5aS,8S,8aS,10aR,10bR,14aS)-8-(Furan-3-yl)-2,2,4a,8a-tetramethyldecahydro-11H,13H-oxireno[2,3-c]pyrano[4′′,3′′:2′,3′]furo[3′,4′:5,6]naphtho[1,2-d]pyran-4,6,13(2H,5aH)-trione
Other names
  • Limonoate D-ring-lactone
  • Limonoic acid di-δ-lactone
  • 7,16-Dioxo-7,16-dideoxylimondiol
Identifiers
3D model (JSmol)
ChEBI
ChEMBL
ChemSpider
ECHA InfoCard 100.236.039 Edit this at Wikidata
UNII
  • InChI=1S/C26H30O8/c1-22(2)15-9-16(27)24(4)14(25(15)12-31-18(28)10-17(25)33-22)5-7-23(3)19(13-6-8-30-11-13)32-21(29)20-26(23,24)34-20/h6,8,11,14-15,17,19-20H,5,7,9-10,12H2,1-4H3/t14-,15-,17-,19-,20+,23-,24-,25+,26+/m0/s1 checkY
    Key: KBDSLGBFQAGHBE-MSGMIQHVSA-N checkY
  • InChI=1/C26H30O8/c1-22(2)15-9-16(27)24(4)14(25(15)12-31-18(28)10-17(25)33-22)5-7-23(3)19(13-6-8-30-11-13)32-21(29)20-26(23,24)34-20/h6,8,11,14-15,17,19-20H,5,7,9-10,12H2,1-4H3/t14-,15-,17-,19-,20+,23-,24-,25+,26+/m0/s1
    Key: KBDSLGBFQAGHBE-MSGMIQHVBF
  • O=C4[C@@]6(C)[C@@]72O[C@@H]7C(=O)O[C@@H](c1ccoc1)[C@]2(C)CC[C@@H]6[C@]35COC(=O)C[C@@H]5OC([C@@H]3C4)(C)C
Properties
C26H30O8
Molar mass 470.52 g/mol
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Sources

Limonin is enriched in citrus fruits and is often found at higher concentrations in seeds, for example orange and lemon seeds.[1]

Presence in citrus products

Limonin and other limonoid compounds contribute to the bitter taste of some citrus food products. Researchers have proposed removal of limonoids from orange juice and other products (known as "debittering") through the use of polymeric films.[2]

Research

Limonin is under basic research to assess its possible biological properties.[1]

References

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