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Haryadi Haryadi
Faculty of Agricultural Technology, Universitas Gadjah Mada
Agriculture, Biological Sciences & Forestry

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Some Characteristics of Cross-Linked Hidroxypropyl Sago Starch Haryadi Haryadi; Kapti Rahayu Kuswanto
agriTECH Vol 16, No 4 (1996)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1564.12 KB) | DOI: 10.22146/agritech.19316

Abstract

Sago starch was laboratory hydroxypropylated using 1% propylene oxide in alkaline condition, then cross-linked using 9.000 - 0.025 % phosphorus oxychloride. The dual modified starches with level of cross-linking ranging from 0.0000 to 0.0186 were characterized for amylographic properties, swelling power, paste turbidity, and in vitro digestibility using porcine pancreatic a-amylase. The cross-linking procedure applied to dual modification nearly unchanged the pasting temperature, i. e. at 62.5°C. Cross-linked, hydroxypropyl starches with DS more than 0.0150 had similar amylographic properties which showed high heat and shear stability of the paste. Cross-linking resulted in decrease in the swelling power and the in vitro digestibility of the starch. Hydroxypropylationprior to subsequent modification facilitate the cross-linking with a consequence of lower pasting temperature, higher maximum viscosity, higher swelling power, and lower digestibility.
Co-Authors Kapti Rahayu Kuswanto