Untersuchungen an Polysaccharid-, Pektin- und Ballaststoff-Fraktionen von Sanddornbeeren

摘要: The alcohol-insoluble substance (AIS) was prepared from freshly picked buckthornton berries (Hippophae rhamnoides L.) (4.70% of the fresh substance). By sequential extraction with water, ammonium oxalate, 0.05 N HC1 and NaOH, following quantities galacturonan/ 100 g AIS were obtained: 0.15 g, 0.4 (ca.), 0.94 2.29 resp. These pectin extracts purified as Cu2+ salts. After dialysis they fractionated into a water-soluble water-insoluble part. In these fractions Glc, Gal Xyl predominant neutral saccharide units. Ara, Rha Man present in smaller amounts. A higher GalA content (in per original AIS) found soluble (with exception alkali extract). pectins are middle-esterified partially acetylated. composition determined 9.25% pectin, 34.8% protein 38.9% total polysaccharides. residue after (RE), which contained 60.0% AIS, 3.89% 12.9% 28.0% polysaccharides found. enzymatic method percentages insoluble dietary fiber estimated 13.6 % 34.1% respectively, whereas RE 5.1% 34.4% fiber. by detergent for both preparations: case 36.2% NDF, 3.0% NDF filtrate, ADF 9.6% lignin to be present, whilst RE, components estimated: 32.8% 1.4% 26.1% 10.1% lignin. data presented relates AIS. water binding capacity observed decrease 7.50 H2O 4.26 (RE) 1 For preparations, more than 40 bound approximately 30% fractions.