Production and physicochemical characterization of resistant starch type III derived from pea starch.
Smooth pea starch was used for the production of physiological important resistant starch type III. For reduction of the molecular weight of the starch, different strategies including enzymatic debranching and acid hydrolysis (lintnerization), were tested to obtain an optimal starting material for retrogradation. The resulting polymer chain lengths were analyzed by high-performance anion-exchange chromatography. Temperature regimes and starch concentrations in gel were optimized during the retrogradation with the aim to obtain a high yield of resistant starch. Optimal conditions led to resistant starch contents up to 74%. The products were thermostable and showed no loss of resistant structures after autoclaving. The peak temperatures of the thermal transition were at approximately 147 degrees C. The resulting resistant starch products are suitable for the generation of functional foods.
Lehmann
Undine
U
German Institute of Human Nutrition, Department of Food Chemistry and Preventive Nutrition, Arthur-Scheunert-Allee 114-116, D-14558 Bergholz-Rehbrücke, Germany. undinelehmann@gmx.de
Rössler
Christine
C
Schmiedl
Detlef
D
Jacobasch
Gisela
G
D055598:Chemical Phenomena; D002627:Chemistry, Physical; D002852:Chromatography, Ion Exchange; D006358:Hot Temperature; D015394:Molecular Structure; D008970:Molecular Weight; D018532:Pisum sativum / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry; D012212:Rheology; D013213:Starch / Q000032:analysis* / Q000737:chemistry*
D011108:Polymers; D013213:Starch