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KMID : 0380619880200060794
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Korean Journal of Food Science and Technology
1988 Volume.20 No. 6 p.794 ~ p.800
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Retrogradation Properties of Waxy Starches
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Abstract
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The retrogradation properties of waxy starches isolated from waxy rice(Shin sun, Tong il), waxy barley(Suwon # 227), waxy Indian millet, waxy millet and Jobs tears(Yullmoo) were investigated. The extent of retrogradation determined by the glucoamyase method during freeze-thaw treatment and storage in low temperature(0-5℃) showed that six kinds of waxy starches were very slowly retrograded. The order of the retrogradation tendencies of these starches were waxy Indian millet $gt; Suwon # 227 Waxy millet $gt; Yullmoo $gt; Tong il $gt; Shin sun. Waxy Indian millet and Suwon # 227 starches were distinctively retrograded compared with other starches. Retrogradation properties observed during freeze-thaw 30 cycles were similar to those of storage for 30 days at 0-5℃. Suwon # 227, which has been the only recommened variety in our nation, was composed of 15% of non-waxy starch and 85% of waxy starch granule.
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