Author
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WU, YING VICTOR |
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Submitted to: American Association of Cereal Chemists Meetings
Publication Type: Abstract Only Publication Acceptance Date: 5/24/1999 Publication Date: N/A Citation: N/A Interpretive Summary: Technical Abstract: A better understanding regarding dry milling responses of high-oil and waxy corns is needed for enhanced utilization, including as a biofuel feedstock, of these corns. Accordingly, dry milling responses of high- oil, waxy, and yellow dent corns were compared. Corn was tempered successively to 16%, 21%, and 24% moisture before degerming in an experimental degermer. The degermed corn was processed by corrugated rolls, aspirator, and sifter into degerminator fines; low fat meal; low fat flour; high fat meal; high fat flour; first, second, and third break grits; bran meal; first, second, and third germs; and hull fractions. Dry milling of all three corns processed well, although the high-oil corn had more than twice the fat content of yellow dent or waxy corn. Yield of degerminator fines for yellow dent corn was higher than that of waxy corn, which was higher than that of high-oil corn. Yield of third break grits was higher for waxy corn than yellow dent corn. Yields of high fat meal for yellow dent corn and waxy corn were higher than that of high-oil corn. Yields of other fractions were not significantly different (P>0.05) for high-oil, waxy, and yellow dent corns. Yellow dent and waxy corns had similar fat, protein, starch, and ash contents. High-oil corn had higher fat and protein but lower starch contents than yellow dent and waxy corns. Fat contents of first break grits for yellow dent and waxy corns were similar, but first break grits from high-oil corn had more fat. Fat content of second break grits from yellow dent corn was similar to that from waxy corn but lower than that from high-oil corn. Fat contents of first germ was highest for high-oil corn and lowest for yellow dent corn. |
