KONJAC FLOUR
Prepared at the 46th JECFA (1996), published in FNP 52 Add 4 (1996) superseding specifications prepared at the 39th JECFA (1993), published in FNP 52 Add 3 (1993). Metals and arsenic specifications revised at the 57th JECFA (2001). An ADI 'not specified' was established at the 46th
JECFA (1996)
SYNONYMS Konjac mannan, Konjac, konnyaku; INS No. 425
DEFINITION The hydrocolloidal polysaccharide obtained from the tubers of various species of Amorphophallus; principal component is a high molecular weight, slightly branched, non-ionic glucomannan consisting of mannose and glucose, connected by ß-1,4 linkages, at a respective molar ratio of approximately 1.6-4:1; acetyl groups along the glucomannan back-bone contribute to solubility properties and are located, on average, every 9 to 19 sugar units
C.A.S. number 37220-17-0
Formula weight The main component, glucomannan, has an average molecular weight of 200,000 to 2,000,000
Assay Not less than 75% carbohydrate
DESCRIPTION White or cream to light tan powder
FUNCTIONAL USES Gelling agent, thickener, emulsifier, stabilizer
