Vs. Rani et al., EFFECT OF PRETREATMENT OF FRESH AMORPHOPHALLUS-PAEONIIFOLIUS ON PHYSICOCHEMICAL PROPERTIES OF STARCH, Starke, 50(2-3), 1998, pp. 72-77
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 aqueo
us extraction. The starch samples prepared from chemically pretreated
roots showed characteristic changes in properties of water soluble amy
lose content. swelling and solubility and alpha-amylase susceptibility
. X-ray diffraction of starch samples from chemically pretreated roots
although resembled that of control, there was noticeable shift with r
espect to their 'd' spacing and I-o/I-max values.