Surface exclusive reaction of corn starch
Abstract
Reactivity of the starch granule was investigated with a goal of controlling the site of reaction. It was found that swelling was necessary for reaction of corn starch granules, even for surface reactions. Myristoyl chloride was found to react almost exclusively at the surfaces of pyridine-swollen granules, whereas hexanoyl chloride could diffuse into the granule. Swollen granules were accessible to acyl chlorides of chain sizes between C$\sb6$ and C$\sb{14}$ to different degrees. N-Hydroxymethyl stearamide reacted with corn starch when heated, even without an acid catalyst, and effectively imparts hydrophobicity.
Degree
Ph.D.
Advisors
BeMiller, Purdue University.
Subject Area
Food science
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