Effect of pretreatment of fresh Amorphophallus paeoniifolius on physicochemical properties of starch

• Published in: Die Stärke Vol. 50; no. 2-3; pp. 72 - 77
• Main Authors: Sunitha Rani, V, John, J.K, Moorthy, S.N, Raja, K.C.M
• Format: Journal Article
• Language: English
• Published: Weinheim WILEY-VCH Verlag GmbH 01.03.1998; WILEY‐VCH Verlag GmbH; Wiley-VCH
• Subjects: AGUA; ALKALI TREATMENT; ALMIDON; AMIDON; AMILOSA; AMMONIA; AMMONIAC; AMONIACO; AMORPHOPHALLUS; AMYLOSE; ARACEAE; Biological and medical sciences; CHEMICOPHYSICAL PROPERTIES; CHLORURE DE SODIUM; CLORURO SODICO; EAU; Food industries; Fundamental and applied biological sciences. Psychology; GONFLEMENT; HINCHAMIENTO; PROPIEDADES FISICOQUIMICAS; PROPIEDADES REOLOGICAS; PROPRIETE PHYSICOCHIMIQUE; PROPRIETE RHEOLOGIQUE; RHEOLOGICAL PROPERTIES; SODIUM CHLORIDE; SOLUBILIDAD; SOLUBILITE; SOLUBILITY; STARCH; Starch and starchy product industries; SWELLING; TRAITEMENT AUX ALCALIS; TRATAMIENTO ALCALINO; WATER; Monocotyledones; Starch; Purity; Starch crop; Araceae; Chemical treatment; Quality; Angiospermae; Tuber; Spermatophyta; Yield; Tuber plant; Pretreatment; Polysaccharide; Physicochemical properties
• ISSN: 0038-9056; 1521-379X
• DOI: 10.1002/(SICI)1521-379X(199803)50:2/3<72::AID-STAR72>3.0.CO;2-I

Fresh roots of Amorphophallus paeoniifolius were separately pretreated with sodium hexametaphosphate (SHMP), potassium metabisulphite (KMS), sodium chloride (NaCl), and ammonium hydroxide (NH4OH) within a range of 1-5% (w/v) concentration and glyceryl monostearate (GMS) at 0.025-0.125% concentration. The quality of starch extracted from pretreated roots was compared with that obtained from fresh roots by direct aqueous extraction. The starch samples prepared from chemically pretreated roots showed characteristic changes in properties of water soluble amylose content. Swelling and solubility and alpha-amylase susceptibility. X-ray diffraction of starch samples from chemically pretreated roots although resembled that of control.