Wiktionary
apiose
n. (context carbohydrate English) A branched-chain sugar ''3-C-(hydroxymethyl)-D-glycerotetrose'' that occurs in parsley and many other plants
Wikipedia
Apiose
' Apiose' is a branched-chain sugar found as residues in galacturonans-type pectins; that occurs in parsley and many other plants.
Apiose 1-reductase uses D-apiitol and NAD to produce D-apiose, NADH, and H.
Flavone apiosyltransferase uses UDP-apiose and 5,7,4'-trihydroxyflavone 7-O-beta-D-glucoside to produce UDP, 5,7,4'-trihydroxyflavone (apigenin), and 7-O-[beta-D-apiosyl-(1->2)-beta-D-glucoside.