Читать книгу Whole Grains and Health - Группа авторов - Страница 20

The pericarp consists of several complete and incomplete layers of dry, largely empty cells. During development, it serves to protect and support the growing endosperm and embryo. The outer layers of wheat bran, pericarp and testa are formed by thick cell walls containing cellulose, lignin and complex xylans with high arabinose to xylose ratios and substitution by ferulic acid dehydromers as cross‐linkers between polymer chains (Hemery et al. 2007).