Physico-Chemical Analysis of Colocasia esculenta Starch

Authors

  • Jyoti P. Saikia Department of Molecular Biology and Biotechnology (A Department of Biotechnology Centre, Govt. of India), School of Science and Techology, Tezpur University, Tezpur-784 028, Assam, India
  • Bolin K. Konwar Department of Molecular Biology and Biotechnology (A Department of Biotechnology Centre, Govt. of India), School of Science and Techology, Tezpur University, Tezpur-784 028, Assam, India
  • Ashok Kumar Department of Molecular Biology and Biotechnology (A Department of Biotechnology Centre, Govt. of India), School of Science and Techology, Tezpur University, Tezpur-784 028, Assam, India

Abstract

The physico-chemical properties of  Colocasia esculenta (var. Ghee Kochu) starch was studied in detail. The starch was isolated and analyses were done for microscopy, X-ray diffraction (XRD), furier transform infrared spectroscopy (FT-IR), differential scanning calorimetry (DSC) characterizations. The chemical characterizations were done using the investigation parameters like amylose content, both apparent and total, amylose leaching, acid and enzymatic hydrolysis and solubility and 1’-1’diphenylpicryl-hydrazyle (DPPH) scavenging in methanol, water and dimethyl sulfoxide (DMSO). The crystallinity of the starch (41.20%) was found to be high as reported for  C. esculenta starches and the starch was A-type. The amylose content of the starch was found to be very poor as compared to the previous reports. The size of the starch granules was found to be 0.50-3.5 μm. An average of 42.27% of degradation was observed during 15 days of acid hydrolysis process. The enthalpy of gelatinization was found to be 13.1 J g-1. Swelling power of the starch granules at room temperature was found to be 81.99 ±4.32%.

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Published

2013-07-23

How to Cite

Saikia, J. P., Konwar, B. K., & Kumar, A. (2013). Physico-Chemical Analysis of Colocasia esculenta Starch. JOURNAL OF ROOT CROPS, 37(1), 77–85. Retrieved from https://journal.isrc.in/index.php/jrc/article/view/13

Issue

Vol. 37 No. 1 (2011): Jounal of Root Crops 37(1)

Section

Research Articles

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