EFSA Compendium of Botanicals

Draft - work in progress

Konjac root (as plant) // Amorphophallus konjac K.Koch

Family:: Araceae
Approval state:: Approved
Number of articles retrieved:: 677
Number of processed references:: 2

Compositions

#1: 3,4-dihydroxybenzaldehyde in roots #2: 3,4-Dihydroxybenzoic acid in roots #3: 3,4-DIHYDROXYBENZALDEHYDE-D-GLUCOSIDE in roots

Endpoint Studies

Genotoxicity

Composition #1: Niwa, T., Murakami, K., Ohtake, T., Etoh, H., Shimizu, A., Shimizu, Y., Kato, Y., Tanaka, H. Peroxynitrite scavenging activities of aromatic compounds isolated from konnyaku, Amorphophallus konjac K.Koch. . bioscience biotechnology and biochemistry, 2002, vol. 66, no. 6, p. 1386–1388. .

Language:

English (en)
Plant part:

Roots and other underground parts (as part-nature) (A067M)
Extraction/Preparation method:

Solvent extraction (A0BZR)
Additional extraction description:

MeOH
Substance:

3,4-Dihydroxybenzaldehyde (RF-00001977-PAR)
Analytical method code:

Chromatographic tests (F015A)
Yes/No Qualitative:

Positive/Present (POS)
Result type:

Qualitative Value (Binary) (BIN)
Internal remarks:

3,4-dihydroxybenzaldehyde in roots

Composition #2: Niwa, T., Murakami, K., Ohtake, T., Etoh, H., Shimizu, A., Shimizu, Y., Kato, Y., Tanaka, H. Peroxynitrite scavenging activities of aromatic compounds isolated from konnyaku, Amorphophallus konjac K.Koch. . bioscience biotechnology and biochemistry, 2002, vol. 66, no. 6, p. 1386–1388. .

Language:

English (en)
Plant part:

Roots and other underground parts (as part-nature) (A067M)
Extraction/Preparation method:

Solvent extraction (A0BZR)
Additional extraction description:

MeOH
Substance:

3,4-Dihydroxybenzoic acid (RF-00008853-PAR)
Analytical method code:

Chromatographic tests (F015A)
Yes/No Qualitative:

Positive/Present (POS)
Result type:

Qualitative Value (Binary) (BIN)
Internal remarks:

3,4-Dihydroxybenzoic acid in roots

Composition #3: SUZUKI, M. 3,4-DIHYDROXYBENZALDEHYDE-D-GLUCOSIDE, THE IRRITANT SUBSTANCE OF KONNYAKU . journal of food science, 1980, vol. 45, no. 4, p. 1075–&. DOI: 10.1111/j.1365-2621.1980.tb07521.x. [DOI link]

Language:

English (en)
Plant part:

Roots and other underground parts (as part-nature) (A067M)
Extraction/Preparation method:

Solvent extraction (A0BZR)
Additional extraction description:

ethanol
Substance:

3,4-Dihydroxybenzaldehyde (RF-00001977-PAR)
Additional substance description:

3,4-DIHYDROXYBENZALDEHYDE-D-GLUCOSIDE
Analytical method code:

Standard Chromatographic tests (paper- thin layer- and column chromatography) (F016A)
Analytical method - additional description:

TLC
Yes/No Qualitative:

Positive/Present (POS)
Result type:

Qualitative Value (Binary) (BIN)
Internal remarks:

3,4-DIHYDROXYBENZALDEHYDE-D-GLUCOSIDE in roots