Published July 1991 | Version v1
Journal article Metadata-only

Changes of relative crystallinity of potato starch under gamma irradiation

Creators

  • 1. Instytut Chemii i Teckniki Jadrowej, Warsaw (Poland). Dept. of Structural Research

Description

Indices of relative crystallinity of starch samples after gamma irradiation in dry form or in potatoes have been determined by differential and integral methods and compared with those calculated for corresponding reference samples. In the case of dry samples, the diminution of relative crystallinity was observed after gamma ray irradiation. In the case of starch samples extracted from irradiated potatoes, the influence of drying conditions was additionally observed. The diminution of relative crystallinity seems to be accompanied by destruction of long-range ordering as observed by SAXS experiment. (orig.)

Abstract (German)

Die relativen Kristallinitaetskoeffizienten von Staerkeproben, die in trockenem Zustand oder in Kartoffeln mit Gamma-Strahlen bestrahlt wurden, wurden mittels integralen und differentialen Methoden bestimmt und mit den bei Eichproben erhaltenen Werten verglichen. Bei trockenen Proben wurde eine Verringerung der relativen Kristallinitaet nach der Gamma-Bestrahlung beobachtet. Staerkeproben, die aus bestrahlten Kartoffeln extrahiert wurden, zeigen darueber hinaus, dass die Trocknungsbedingungen die Endergebnisse beeinflussen. Es scheint, dass die Verringerung der relativen Kristallinitaet von der mit SAXS-Methoden begleitenden Zerstoerung der Fernordnung zusammenhaengt. (orig.)

Additional details

Publishing Information

Journal Title
Starch/Staerke
Journal Volume
43
Journal Issue
7
Series
Starch/Staerke.
Journal Page Range
251-253
ISSN
0038-9056
CODEN
STARD

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
22079892
Subject category
S38: RADIATION CHEMISTRY, RADIOCHEMISTRY AND NUCLEAR CHEMISTRY;
Descriptors DEI
CHEMICAL RADIATION EFFECTS; CRYSTAL STRUCTURE; DRYING; GAMMA RADIATION; POTATOES; STARCH; X-RAY DIFFRACTION
Descriptors DEC
CARBOHYDRATES; COHERENT SCATTERING; DIFFRACTION; ELECTROMAGNETIC RADIATION; FOOD; IONIZING RADIATIONS; ORGANIC COMPOUNDS; POLYSACCHARIDES; RADIATION EFFECTS; RADIATIONS; REAGENTS; SACCHARIDES; SCATTERING; TUBERS; VEGETABLES