Insoluble condensed tannins of canola/rapeseed.
The contents of soluble, SDS-extractable, and insoluble condensed tannins were determined in canola/rapeseed hulls from several varieties by utilizing the proanthocyanidin assay. The total amount of tannins in rapeseed/canola hulls ranged from 1913 to 6213 mg per 100 g of oil-free hulls. Insoluble tannins predominated in canola/rapeseed hulls and comprised from 70 to 95.8% of total tannins present. The amounts of SDS-extractable tannins were comparable to those of soluble tannins but constituted only 4.7-14. 1% of insoluble tannins present.
Naczk
M
M
Department of Biochemistry, Memorial University of Newfoundland, St. John's, Newfoundland A1B 3X9, Canada. mnaczk@stfx.ca
Amarowicz
R
R
Pink
D
D
Shahidi
F
F
D000872:Anthocyanins / Q000032:analysis; D001937:Brassica / Q000737:chemistry*; D044945:Proanthocyanidins; D012995:Solubility; D013634:Tannins / Q000737:chemistry*
D000872:Anthocyanins; D044945:Proanthocyanidins; D013634:Tannins; C013221:proanthocyanidin