Premium
Effect of Condensed Tannins in the Analysis of Dietary Fiber in Carob Pods
Author(s) -
SAURACALIXTO F.
Publication year - 1988
Publication title -
journal of food science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.772
H-Index - 150
eISSN - 1750-3841
pISSN - 0022-1147
DOI - 10.1111/j.1365-2621.1988.tb07838.x
Subject(s) - tannin , proanthocyanidin , chemistry , food science , dietary fiber , polysaccharide , composition (language) , dry matter , condensed tannin , protease , polyphenol , dry weight , fiber , enzyme , biochemistry , botany , antioxidant , organic chemistry , biology , linguistics , philosophy
Insoluble and soluble dietary fiber (IDF and SDF) determined gravimetrically from ripe carob pods after enzymatic treatments, were 32.6% and 6.8%, on dry matter basis. About 50% of the weight of the DF residues corresponded to tannins and protein, because of protease inhibition, and protein‐tannin complexes prevented the removal of these constituents in carobs. Nonstarch polysaccharides (14.7% dry weight) and composition were determined by GLC analysis in acid hydroly‐sates of samples. The results were discussed showing that the content of DF obtained by enzymatic procedures, including the suggested AOAC method, may be overestimated because of the presence of condensed tannins.