Effect of Pretreatment of Fresh Amorphophallus paeoniifolius on Physicocochemical Properties of Scratch

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Conclusion

Studies on the effect of pretreating fresh roots of Amor-phophallus paeoniifolius using a few selected chemicals, viz. SHMP, KMS, NaCL, GMS and NH4OH were carried out in order to assess the changes in starch yield, starch purity (%) and properties such as amylase blue value, intrinsic viscosity, swelling volume and solubility at 95°C. Changes in ά-amylase susceptibility and X-ray diffraction pattern were also looked into. The impact of pretreatment of fresh roots was more pronounced with respect to swelling volume and solubility and to some extent, ά-amylase susceptibility. No major change in X-ray diffraction pattern or total and apparent amylase blue value could be noticed.

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Addresses of authors: Miss V. Sunitha Rani, Senior Research Fellow, Technology Division, Central Tuber Crops Research Institute (CTCRI), Sreekaryam, Trivandrum Kerala-695 017; Ms Jansy K. John, Senior Research Fellow, BCP & WWT Division, Regional Research Laboratory (RRL), Trivandrum, Kerala 695 019; Dr. S.N. Moorthy, Scientist (CTCRI), Trivandrum 695 014; Dr. K.C.M. Raja*, Scientist * Corresponding author. (Received: May 29, 1997).