| Primary (First) - acidic |
| FL | laevo- | aspartic acid |
| | odor: odorless |
| | flavor: acid |
| FL/FR | | butyric acid |
| | odor: sharp acetic cheese butter fruit |
| | flavor: Acidic sour, cheesy, dairy, creamy with a fruity nuance |
| FL/FR | iso | butyric acid |
| | odor: acidic sour cheese dairy buttery rancid |
| | flavor: acidic sour cheesy limburger cheese dairy creamy |
| FL | | citric acid |
| | flavor: strong acidic |
| FL/FR | 2- | ethyl butyric acid |
| | odor: acidic fruity whiskey dry berry |
| | flavor: Acidic, fruity, tropical with a creamy aftertaste |
| FL | 2- | furoic acid |
| | flavor: acidic caramellic earthy |
| FL | (E)-2- | hexenoic acid |
| | odor: powerful fruity sweet warm herbal |
| | flavor: acidic cheesy fruity sweet |
| CS | | hibiscus rosa-sinensis flower extract |
| | flavor: acidic astringent cooked fruity vegetable |
| FL/FR | | levulinic acid |
| | odor: sweet caramel acidic acetoin buttery |
| | flavor: Acidic, sweet, creamy and slight dairy |
| FL | | malic acid |
| | flavor: strong acidic |
| FD | | polydextrose |
| | flavor: slightly acidic |
| FL | | propionic acid |
| | odor: pungent acidic cheesy vinegar |
| | flavor: Acidic, dairy with a pronounced fruity lift |
| FL/FR | | valeric acid |
| | odor: Acidic and sharp, cheese-like, sour milky, tobacco, with fruity nuances |
| | flavor: Acidic, dairy-like with milky and cheese nuances |
| Secondary (Second) - acidic |
| FL | | acetic acid |
| | flavor: pungent sour overripe fruit |
| FL | (Z)- | aconitic acid |
| | flavor: wine acid |
| FL | | araza flavor |
| | 2,5- | dimethyl-3,6-dipropyl pyrazine |
| | flavor: hazelnut acidic |
| FL | 2,4- | dimethyl-2-pentenoic acid |
| | odor: acidic fruity cheese honey |
| | flavor: Tangy, acidic and cheesy with ripe, fruity and animal nuances |
| | 2- | ethyl thiopyridine |
| | flavor: green, acid, cereal, bitter, sour |
| | 1- | furfuryl-2-pyrrole carbaldehyde |
| | flavor: slightly burnt taste, slightly acid |
| FL/FR | | lactic acid |
| | flavor: sour acid |
| FL | laevo- | lactic acid |
| | flavor: sour acidic |
| | 2- | methyl-3-butyl quinoxaline |
| | flavor: bitter acidic woody |
| FL/FR | 2- | methyl-2-pentenoic acid |
| | odor: dry acid sweaty strawberry woody fruity jam |
| | flavor: Sour, acidic, sweaty, berry- and fruit-like |
| | 2- | methyl-3-propyl quinoxaline |
| | flavor: bitter acidic earthy |
| FL | 3- | methyl valeric acid |
| | odor: Animalic, sharp acidic cheesey, green with a fruity sweaty nuance |
| | flavor: Sour, cheesey, fresh with fruity notes |
| FL | | nephelium lappaceum fruit |
| | flavor: sweet mild acidic |
| FL | | succinic acid |
| | flavor: sour acidic |
| FL | | tartaric acid |
| | flavor: tart acidic |
| FL | dextro,laevo- | tartaric acid |
| | odor: very mild caramellic |
| | flavor: tart acidic |
| FL | laevo-(+)- | tartaric acid |
| | flavor: tart acidic |
| Tertiary (Third) - acidic |
| | | cimicifuga racemosa root distillates |
| FL/FR | 2- | methyl butyric acid |
| | odor: pungent acid roquefort cheese |
| | flavor: Fruity, dirty, acidic with a dairy buttery and cheesey nuance |
| FL | | tamarindus indica extract |
| | odor: sweet sour fruity |
| | flavor: fruity jammy acidic dried fruit astringent sour |
| FL | | tomato distillates |
| | flavor: tropical tart acidic green fruity vegetable earthy umami |
| FL | | tomato flavor |
| Quaternary (Fourth) - acidic |
| FL | 5- | ethyl-2-methyl pyridine |
| | odor: nutty strong raw potato roasted earthy |
| | flavor: winey buttery acidic cereal sulfurous solvent |
| FL | | sea buckthorn flavor |
| Quinary (Fifth) - acidic |
| FL | | malt distillates |
| | odor: sweet sugar creamy brown malt honey |
| | flavor: malty sugar molasses honey caramellic acidic |
| FL/FR | | methyl butyrate |
| | odor: Pungent, etherial, fruity, perfumey and fusel with a fermented, cultured, creamy undernote |
| | flavor: Impacting, fusel, fruity and estry with a cultured dairy, acidic depth |
| Senary (Sixth) - acidic |
| Septenary (Seventh) - acidic |
| Octonary (Eighth) - acidic |