Classification Term: 3874

Cyclohexenones (ontology term: CHEMONTID:0004325)

Compounds containing a cylohexenone moiety, which is a six-membered aliphatic ring that carries a ketone and has one endocyclic double bond." []

found 51 associated metabolites at no_class-level_7 metabolite taxonomy ontology rank level.

Ancestor: Cyclic ketones

Child Taxonomies: There is no child term of current ontology term.

3,5,5-Trimethyl-2-cyclohexen-1-one

1,1, 3-Trimethyl-3-cyclohexene-5-one

C9H14O (138.1044594)


3,5,5-Trimethyl-2-cyclohexen-1-one is found in fruits. 3,5,5-Trimethyl-2-cyclohexen-1-one is a flavouring ingredient. 3,5,5-Trimethyl-2-cyclohexen-1-one is present in cranberries (Vaccinium microcarpa) and saffron (Crocus sativus 3,5,5-Trimethyl-2-cyclohexen-1-one is a flavouring ingredient. It is present in cranberries (Vaccinium microcarpa) and saffron (Crocus sativus), as well as in other herbs and spices. CONFIDENCE Reference Standard (Level 1); NaToxAq - Natural Toxins and Drinking Water Quality - From Source to Tap (https://natoxaq.ku.dk) CONFIDENCE Reference Standard (Level 1); INTERNAL_ID 2336 CONFIDENCE standard compound; INTERNAL_ID 2507

   

2-Cyclohexen-1-one

2-Cyclohexen-1-one, 18O-labeled

C6H8O (96.0575118)


Flavouring compound [Flavornet]

   

2,6,6-Trimethyl-2-cyclohexene-1,4-dione

2,6,6-Trimethyl-2-cyclohexene-1,4-dione, analytical standard

C9H12O2 (152.0837252)


2,6,6-trimethyl-2-cyclohexene-1,4-dione, also known as ketoisophorone, is a member of the class of compounds known as cyclohexenones. Cyclohexenones are compounds containing a cylohexenone moiety, which is a six-membered aliphatic ring that carries a ketone and has one endocyclic double bond. 2,6,6-trimethyl-2-cyclohexene-1,4-dione is slightly soluble (in water) and an extremely weak acidic compound (based on its pKa). 2,6,6-trimethyl-2-cyclohexene-1,4-dione is a sweet, leaf, and musty tasting compound found in herbs and spices and tea, which makes 2,6,6-trimethyl-2-cyclohexene-1,4-dione a potential biomarker for the consumption of these food products. 2,6,6-trimethyl-2-cyclohexene-1,4-dione exists in all eukaryotes, ranging from yeast to humans. 2,6,6-Trimethyl-2-cyclohexene-1,4-dione is a member of cyclohexenones. 2,6,6-Trimethyl-2-cyclohexene-1,4-dione is a natural product found in Nicotiana bonariensis, Amauris echeria, and other organisms with data available. 2,6,6-Trimethyl-2-cyclohexene-1,4-dione is found in herbs and spices. 2,6,6-Trimethyl-2-cyclohexene-1,4-dione is present in saffron (Crocus sativus) and tea; flavouring ingredient.

   

Monascoflavin

3-hexanoyl-9a-methyl-6-[(1Z)-prop-1-en-1-yl]-2H,3H,3aH,4H,8H,9H,9aH-furo[3,2-g]isochromene-2,9-dione

C21H26O5 (358.17801460000004)


Monascoflavin is a fungal pigment from Monascus species which infests rice and other foodstuffs. Monascoflavin is a food colouran

   

3-Methyl-2-cyclohexen-1-one

2-cyclohexen-1-one, 3-methyl-

C7H10O (110.07316100000001)


3-Methyl-2-cyclohexen-1-one is a flavouring ingredien Flavouring ingredient

   

(E)-5,8-Megastigmadien-4-one

3-[(2Z)-but-2-en-1-yl]-2,4,4-trimethylcyclohex-2-en-1-one

C13H20O (192.151407)


(Z)-5,8-Megastigmadien-4-one is found in fruits. (Z)-5,8-Megastigmadien-4-one is a constituent of Passiflora edulis (passion fruit) Constituent of Nicotiana tabacum and Passiflora edulis (passion fruit). (E)-5,8-Megastigmadien-4-one is found in fruits.

   

(R)-Cryptone

4-(1-Methylethyl)-2-cyclohexen-1-one

C9H14O (138.1044594)


(R)-Cryptone is found in herbs and spices. (R)-Cryptone is present in many plants including Angelica root, black pepper, lavender and cardamo Flavouring agent for candies

   

Acorenone

Spiro[4.5]dec-6-en-8-one, 1,7-dimethyl-4-(1-methylethyl)-

C15H24O (220.18270539999997)


Constituent of carrot (Daucus carota) and Acorus calamus (sweet flag). Acorenone is found in many foods, some of which are carrot, herbs and spices, wild carrot, and root vegetables. Acorenone is found in carrot. Acorenone is a constituent of carrot (Daucus carota) and Acorus calamus (sweet flag)

   

Theaspirone A

2,6,10,10-tetramethyl-1-oxaspiro[4.5]dec-6-en-8-one

C13H20O2 (208.14632200000003)


(6S,9S)-Theaspirone is found in fruits. (6S,9S)-Theaspirone is a constituent of quince fruit.

   

11,12,13-Trinor-1(10)-spirovetivene-2,7-dione

11,12,13-Trinor-1(10)-spirovetivene-2,7-dione

C12H16O2 (192.1150236)


6,10-dimethylspiro[4.5]-dec-6-en-2,8-dione is a member of the class of compounds known as cyclohexenones. Cyclohexenones are compounds containing a cylohexenone moiety, which is a six-membered aliphatic ring that carries a ketone and has one endocyclic double bond. 6,10-dimethylspiro[4.5]-dec-6-en-2,8-dione is practically insoluble (in water) and an extremely weak acidic compound (based on its pKa). 6,10-dimethylspiro[4.5]-dec-6-en-2,8-dione can be found in potato, which makes 6,10-dimethylspiro[4.5]-dec-6-en-2,8-dione a potential biomarker for the consumption of this food product. 11,12,13-Trinor-1(10)-spirovetivene-2,7-dione is found in alcoholic beverages. 11,12,13-Trinor-1(10)-spirovetivene-2,7-dione is a constituent of potato tubers infected with Phoma exigua.

   

Epiacoronene

4,8-dimethyl-1-(propan-2-yl)spiro[4.5]dec-8-ene-2,7-dione

C15H22O2 (234.1619712)


4-Acorene-3,8-dione is found in herbs and spices. 4-Acorene-3,8-dione is a constituent of Acorus calamus (sweet flag). Constituent of Acorus calamus (sweet flag). Epiacoronene is found in herbs and spices and root vegetables.

   

Macrophorin C

5-hydroxy-1-[(6-hydroxy-5,5,8a-trimethyl-2-methylidene-3,4,4a,6,7,8-hexahydro-1H-naphthalen-1-yl)methyl]-4-(hydroxymethyl)-7-oxabicyclo[4.1.0]hept-3-en-2-one

C22H32O5 (376.2249622)


Macrophorin C is found in pomes. Macrophorin C is from Macrophoma fruit ro From Macrophoma fruit rot. Macrophorin C is found in pomes.

   

10beta-12,13-Dinor-8-oxo-6-eremophilen-11-al

8,8a-dimethyl-3-oxo-3,4,4a,5,6,7,8,8a-octahydronaphthalene-2-carbaldehyde

C13H18O2 (206.1306728)


10beta-12,13-Dinor-8-oxo-6-eremophilen-11-al is found in green vegetables. 10beta-12,13-Dinor-8-oxo-6-eremophilen-11-al is a constituent of Petasites japonicus ssp. giganteus (Japanese butterbur). Constituent of Petasites japonicus sspecies giganteus (Japanese butterbur). 10beta-12,13-Dinor-8-oxo-6-eremophilen-11-al is found in green vegetables.

   

Megastigmatrienone

4-[(1E)-buta-1,3-dien-1-yl]-3,5,5-trimethylcyclohex-2-en-1-one

C13H18O (190.1357578)


Megastigmatrienone belongs to the family of Ketones. These are organic compounds in which a carbonyl group is bonded to two carbon atoms R2C=O (neither R may be H).

   

3,5,5-Trimethyl-3-cyclohexen-1-one

3,5,5-Trimethyl-3-cyclohexene-1-one

C9H14O (138.1044594)


3,5,5-Trimethyl-3-cyclohexen-1-one is found in fruits. 3,5,5-Trimethyl-3-cyclohexen-1-one is present in oil of saffron and kiwi fruit. Present in oil of saffron and kiwi fruit. 3,5,5-Trimethyl-3-cyclohexen-1-one is found in saffron, herbs and spices, and fruits.

   

2-Hydroxyacorenone

2-hydroxy-4,8-dimethyl-1-(propan-2-yl)spiro[4.5]dec-8-en-7-one

C15H24O2 (236.1776204)


2-Hydroxyacorenone is found in herbs and spices. 2-Hydroxyacorenone is a constituent of Acorus calamus (sweet flag)

   

8-Acetoxy-4-acoren-3-one

4,8-Dimethyl-9-oxo-1-(propan-2-yl)spiro[4.5]dec-7-en-2-yl acetic acid

C17H26O3 (278.1881846)


8-Acetoxy-4-acoren-3-one is found in herbs and spices. 8-Acetoxy-4-acoren-3-one is a constituent of Acorus calamus (sweet flag)

   

xi-4-Hydroxy-4-methyl-2-cyclohexen-1-one

xi-4-Hydroxy-4-methyl-2-cyclohexen-1-one

C7H10O2 (126.068076)


Xi-4-hydroxy-4-methyl-2-cyclohexen-1-one is a member of the class of compounds known as cyclohexenones. Cyclohexenones are compounds containing a cylohexenone moiety, which is a six-membered aliphatic ring that carries a ketone and has one endocyclic double bond. Xi-4-hydroxy-4-methyl-2-cyclohexen-1-one is soluble (in water) and a very weakly acidic compound (based on its pKa). Xi-4-hydroxy-4-methyl-2-cyclohexen-1-one can be found in herbs and spices, which makes xi-4-hydroxy-4-methyl-2-cyclohexen-1-one a potential biomarker for the consumption of this food product. xi-4-Hydroxy-4-methyl-2-cyclohexen-1-one is found in herbs and spices. xi-4-Hydroxy-4-methyl-2-cyclohexen-1-one is a constituent of Nigella sativa (black cumin) and peppermint oil (Mentha piperita).

   

Macrophorin B

1-[(5,5,8a-trimethyl-2-methylidene-6-oxo-hexahydronaphthalen-1-yl)methyl]-5-hydroxy-4-(hydroxymethyl)-7-oxabicyclo[4.1.0]hept-3-en-2-one

C22H30O5 (374.209313)


Macrophorin B is found in pomes. Macrophorin B is from Macrophoma fruit ro From Macrophoma fruit rot. Macrophorin B is found in pomes.

   

(S)-Bilobanone

2-methyl-5-[5-(2-methylpropyl)furan-3-yl]cyclohex-2-en-1-one

C15H20O2 (232.14632200000003)


(S)-Bilobanone is found in fats and oils. (S)-Bilobanone is a constituent of Ginkgo biloba (ginhgo) Constituent of Ginkgo biloba (ginhgo). (S)-Bilobanone is found in ginkgo nuts and fats and oils.

   

3,5,6-Trihydroxy-5-(hydroxymethyl)-2-methoxy-2-cyclohexen-1-one

3,5,6-Trihydroxy-5-(hydroxymethyl)-2-methoxy-2-cyclohexen-1-one

C8H12O6 (204.0633852)


3,5,6-Trihydroxy-5-(hydroxymethyl)-2-methoxy-2-cyclohexen-1-one is found in crustaceans. 3,5,6-Trihydroxy-5-(hydroxymethyl)-2-methoxy-2-cyclohexen-1-one is isolated from the eggs of brine shrimp (Artemia), sea urchin, cod and other fish. Isolated from the eggs of brine shrimp (Artemia), sea urchin, cod and other fish. 3,5,6-Trihydroxy-5-(hydroxymethyl)-2-methoxy-2-cyclohexen-1-one is found in crustaceans and fishes.

   

Cyclotricuspidogenin C

15-[5,6-dihydroxy-5-(propan-2-yl)hexan-2-yl]-4,6,14-trihydroxy-7,12,16-trimethylpentacyclo[9.7.0.0¹,³.0³,⁸.0¹²,¹⁶]octadecane-7-carboxylic acid

C31H52O7 (536.3712842)


Cyclotricuspidogenin B is found in fruits. Cyclotricuspidogenin B is isolated from Passiflora edulis (passion fruit).

   

Macrophorin A

1-[(5,5,8a-trimethyl-2-methylidene-hexahydro-1H-naphthalen-1-yl)methyl]-5-hydroxy-4-(hydroxymethyl)-7-oxabicyclo[4.1.0]hept-3-en-2-one

C22H32O4 (360.2300472)


Macrophorin A is found in pomes. Macrophorin A is produced by Macrophoma fruit rot of appl Production by Macrophoma fruit rot of apple. Macrophorin A is found in pomes.

   

Yucalexin P8

13-ethenyl-6-hydroxy-5,5,9,13-tetramethyl-15-oxatetracyclo[8.5.0.0¹,¹⁴.0⁴,⁹]pentadec-10-ene-7,12-dione

C20H26O4 (330.18309960000005)


Yucalexin P10 is found in root vegetables. Yucalexin P10 is a constituent of cassava Manihot esculenta.

   

Heliespirone A

4-ethenyl-2-(2-hydroxypropan-2-yl)-8-methyl-1-oxaspiro[4.5]dec-7-ene-6,9-dione

C15H20O4 (264.13615200000004)


Heliespirone A is found in fats and oils. Heliespirone A is a constituent of Helianthus annuus (sunflower) Constituent of Helianthus annuus (sunflower). Heliespirone A is found in fats and oils.

   

1-Hydroxyacorenone

1-hydroxy-4,8-dimethyl-1-(propan-2-yl)spiro[4.5]dec-8-ene-2,7-dione

C15H22O3 (250.1568862)


1-Hydroxyacorenone is found in herbs and spices. 1-Hydroxyacorenone is a constituent of Acorus calamus (sweet flag) Constituent of Acorus calamus (sweet flag). 1-Hydroxyacorenone is found in herbs and spices and root vegetables.

   

7-Isopropyl-5-methylbicyclo[2.2.2]oct-5-en-2-one

5-methyl-7-(propan-2-yl)bicyclo[2.2.2]oct-5-en-2-one

C12H18O (178.1357578)


7-Isopropyl-5-methylbicyclo[2.2.2]oct-5-en-2-one is found in fats and oils. 7-Isopropyl-5-methylbicyclo[2.2.2]oct-5-en-2-one is a constituent of Angelica archangelica (angelica). Constituent of Angelica archangelica (angelica). 7-Isopropyl-5-methylbicyclo[2.2.2]oct-5-en-2-one is found in fats and oils, herbs and spices, and green vegetables.

   

2,3-Dimethyl-2-cyclohexen-1-one

2,3-Dimethyl-2-cyclohexen-1-one

C8H12O (124.0888102)


2,3-Dimethyl-2-cyclohexen-1-one has been used in food flavourin

   

3-Methyl-5-propyl-2-cyclohexen-1-one

3-Methyl-5-propylcyclohex-2-en-1-one

C10H16O (152.12010859999998)


Celery flavour ingredien

   

xi-8,9-Dehydrotheaspirone

2,6,10,10-tetramethyl-1-oxaspiro[4.5]deca-2,6-dien-8-one

C13H18O2 (206.1306728)


Volatile flavour constituent of white-fleshed nectarines, oranges and Riesling wine. xi-8,9-Dehydrotheaspirone is found in alcoholic beverages, citrus, and fruits. The more odiferous enantiomer of the compound 8,9-Dehydrotheaspirone, a flavour and perfumery ingredient [CCD].

   

3,5,5-Trimethyl-1,2-cyclohexanedione

2-Hydroxy-3,5,5-trimethyl-2-cyclohexen-1-one, 9ci

C9H14O2 (154.09937440000002)


3,5,5-Trimethyl-1,2-cyclohexanedione is a flavouring ingredient. 3,5,5-Trimethyl-1,2-cyclohexanedione is present in alfalfa extract, red clover extract and burley tobacc It is used as a food additive

   

19alpha-19-Hydroxy-3,11-dioxo-12-ursen-28-oic acid

(2R,4aR,6bS,12aS)-1-hydroxy-1,2,6b,9,9,12a-hexamethyl-10,13-dioxo-1,2,3,4,4a,5,6,6a,6b,7,8,8a,9,10,11,12,12a,12b,13,14b-icosahydropicene-4a-carboxylic acid

C29H42O5 (470.30320820000003)


19alpha-19-Hydroxy-3,11-dioxo-12-ursen-28-oic acid is found in herbs and spices. 19alpha-19-Hydroxy-3,11-dioxo-12-ursen-28-oic acid is a constituent of Sanguisorba officinalis (burnet bloodwort). Constituent of Sanguisorba officinalis (burnet bloodwort). 19alpha-19-Hydroxy-3,11-dioxo-12-ursen-28-oic acid is found in tea and herbs and spices.

   

4,4alpha,5,6-Tetrahydro-7-methyl-2(3H)-naphthalenone

4,4alpha,5,6-Tetrahydro-7-methyl-2(3H)-naphthalenone

C11H14O (162.1044594)


(±)-4,4alpha,5,6-Tetrahydro-7-methyl-2(3H)-naphthalenone is a flavouring ingredient for foods and chewing gum. It is used as a food additive

   

Manumycin A

N-(5-Hydroxy-5-{6-[(2-hydroxy-5-oxocyclopent-1-en-1-yl)-C-hydroxycarbonimidoyl]hexa-1,3,5-trien-1-yl}-2-oxo-7-oxabicyclo[4.1.0]hept-3-en-3-yl)-2,4,6-trimethyldeca-2,4-dienimidate

C31H38N2O7 (550.2678877999999)


   

Bardoxolone

11-cyano-2,2,6a,6b,9,9,12a-heptamethyl-10,14-dioxo-1,2,3,4,4a,5,6,6a,6b,7,8,8a,9,10,12a,14,14a,14b-octadecahydropicene-4a-carboxylic acid

C31H41NO4 (491.30354260000007)


   

Bardoxolone methyl

Methyl (4AS,6AR,6BS,8AR,12AS,14AR,14BS)-11-cyano-2,2,6A,6B,9,9,12A-heptamethyl-10,14-dioxo-1,2,3,4,4A,5,6,6A,6B,7,8,8A,9,10,12A,14,14A,14B-octadecahydropicene-4A-carboxylate

C32H43NO4 (505.31919180000006)


   

Clethodim

2-((1E)-N-(((2E)-3-Chloro-2-propen-1-yl)oxy)propanimidoyl)-5-(2-(ethylsulfanyl)propyl)-3-hydroxy-2-cyclohexen-1-one

C17H26ClNO3S (359.1321836000001)


   

Epicocconone

6-(1-hydroxy-3-oxodeca-1,4,6,8-tetraen-1-yl)-11-(hydroxymethyl)-3-methyl-4,12-dioxatricyclo[7.4.0.0³,⁷]trideca-1(13),6,8-triene-2,5-dione

C23H22O7 (410.1365462)


   

Irofulven

6-hydroxy-3-(hydroxymethyl)-2,4,6-trimethyl-6,7-dihydrospiro[cyclopropane-1,5-indene]-7-one

C15H18O3 (246.1255878)


   

Monascin

3-hexanoyl-9a-methyl-6-(prop-1-en-1-yl)-2H,3H,3aH,4H,8H,9H,9aH-furo[3,2-g]isochromene-2,9-dione

C21H26O5 (358.17801460000004)


   

3-(5-Methoxy-4-oxocyclohex-2-en-1-yl)prop-2-enoic acid

3-(5-Methoxy-4-oxocyclohex-2-en-1-yl)prop-2-enoic acid

C10H12O4 (196.0735552)


   

Octahydrohyperforin

4-hydroxy-8-methyl-3,5,7,8-tetrakis(3-methylbutyl)-1-(2-methylpropanoyl)bicyclo[3.3.1]non-3-ene-2,9-dione

C34H58O4 (530.4334868)


   

Scutellarein 7-glucuronide

6-{[5,6-dihydroxy-2-(4-hydroxyphenyl)-4-oxo-4H-chromen-7-yl]oxy}-3,4,5-trihydroxyoxane-2-carboxylic acid

C21H18O12 (462.0798228)


   

Scyphostatin

N-(1-Hydroxy-3-{2-hydroxy-3-oxo-7-oxabicyclo[4.1.0]hept-4-en-2-yl}propan-2-yl)-8,10,12,14-tetramethylhexadeca-2,4,6,12-tetraenimidate

C29H43NO5 (485.31410680000005)


   

Terreic acid

3-hydroxy-4-methyl-7-oxabicyclo[4.1.0]hept-3-ene-2,5-dione

C7H6O4 (154.0266076)


   

2,6,6-Trimethylcyclohex-2-en-1-one

2,6,6-Trimethylcyclohex-2-en-1-one

C9H14O (138.1044594)


2,6,6-trimethylcyclohex-2-en-1-one is a member of the class of compounds known as cyclohexenones. Cyclohexenones are compounds containing a cylohexenone moiety, which is a six-membered aliphatic ring that carries a ketone and has one endocyclic double bond. 2,6,6-trimethylcyclohex-2-en-1-one is slightly soluble (in water) and an extremely weak basic (essentially neutral) compound (based on its pKa). 2,6,6-trimethylcyclohex-2-en-1-one can be found in tea, which makes 2,6,6-trimethylcyclohex-2-en-1-one a potential biomarker for the consumption of this food product.

   

Oxyglutinosone

3,4a-dihydroxy-4-methyl-6-(prop-1-en-2-yl)-2,3,4,4a,5,6,7,8-octahydronaphthalen-2-one

C14H20O3 (236.14123700000002)


Oxyglutinosone is a member of the class of compounds known as cyclohexenones. Cyclohexenones are compounds containing a cylohexenone moiety, which is a six-membered aliphatic ring that carries a ketone and has one endocyclic double bond. Oxyglutinosone is slightly soluble (in water) and a very weakly acidic compound (based on its pKa). Oxyglutinosone can be found in potato, which makes oxyglutinosone a potential biomarker for the consumption of this food product.

   

3-Oxo-beta-damascone

4-[(2E)-but-2-enoyl]-3,5,5-trimethylcyclohex-3-en-1-one

C13H18O2 (206.1306728)


3-oxo-beta-damascone is a member of the class of compounds known as cyclohexenones. Cyclohexenones are compounds containing a cylohexenone moiety, which is a six-membered aliphatic ring that carries a ketone and has one endocyclic double bond. 3-oxo-beta-damascone is practically insoluble (in water) and a very weakly acidic compound (based on its pKa). 3-oxo-beta-damascone can be found in common grape, which makes 3-oxo-beta-damascone a potential biomarker for the consumption of this food product.

   

alpha-3-Oxo-damascone

(4S)-4-[(2E)-but-2-enoyl]-3,5,5-trimethylcyclohex-2-en-1-one

C13H18O2 (206.1306728)


Alpha-3-oxo-damascone is practically insoluble (in water) and an extremely weak acidic compound (based on its pKa). Alpha-3-oxo-damascone can be found in common grape, which makes alpha-3-oxo-damascone a potential biomarker for the consumption of this food product.

   

3-dehydroshikimate

4,5-dihydroxy-3-oxocyclohex-1-ene-1-carboxylate

C7H7O5 (171.02934720000002)


3-dehydro-shikimate is a member of the class of compounds known as cyclohexenones. Cyclohexenones are compounds containing a cylohexenone moiety, which is a six-membered aliphatic ring that carries a ketone and has one endocyclic double bond. 3-dehydro-shikimate is soluble (in water) and a weakly acidic compound (based on its pKa). 3-dehydro-shikimate can be found in a number of food items such as pot marjoram, salmonberry, purple laver, and lichee, which makes 3-dehydro-shikimate a potential biomarker for the consumption of these food products. 3-dehydro-shikimate may be a unique E.coli metabolite.

   

6-hydroxy-2-cyclohexen-one-carboxylate

1-Hydroxy-6-oxocyclohex-2-ene-1-carboxylic acid

C7H7O4- (155.0344322)


6-hydroxy-2-cyclohexen-one-carboxylate, also known as hcc, is a member of the class of compounds known as cyclohexenones. Cyclohexenones are compounds containing a cylohexenone moiety, which is a six-membered aliphatic ring that carries a ketone and has one endocyclic double bond. 6-hydroxy-2-cyclohexen-one-carboxylate is soluble (in water) and a weakly acidic compound (based on its pKa). 6-hydroxy-2-cyclohexen-one-carboxylate can be found in a number of food items such as avocado, bitter gourd, endive, and pepper (c. frutescens), which makes 6-hydroxy-2-cyclohexen-one-carboxylate a potential biomarker for the consumption of these food products.