|
C-FAR Research Reporting
| Project Number |
01I-006-3-ISU
|
Prior Number
|
502009603
|
| Status |
Completed |
| Project Title |
Corn Hybrid & Drying Temperature Effects on End Use Quality
|
| Research Program |
Illinois State University Internal Program
|
| Principal Investigator |
Kevin Baker
|
| Department/College |
Agriculture
|
| Institution |
Illinois State University
|
Co-Investigator(s) (name, department/
college and institution) |
S.R. Eckhoff and M.R. Paulsen; Agricultural Engineering Dept.; University of Illinois at Urbana-Champaign
|
| Total C-FAR Funding |
$5,564 |
| Type of Research |
Inter-Institutional
|
| Funding Period |
Jul 01, 2000
|
--
|
Jun 30, 2001
|
C-FAR Research
Focus Area |
Agricultural Production Systems
|
| Research Category |
Corn
|
Purpose and Goals
|
The objectives of this project were: to use a laboratory-scale dryer to dry corn samples at four drying temperatures and evaluate hybrids by drying temperature differences in wet milling yield; and to improve estimates of added value for processing of specialty corn hybrids, including waxy, high-starch, and hard endosperm hybrids.
|
Outcomes and Impact
|
Fifteen commercial hybrids including three waxy varieties were used in this study. They were grown on the Agricultural Engineering Farm at the University of Illinois. They were harvested at three harvest moistures of about 30, 25, and 14% wet basis. The two higher moisture samples were dried at temperatures of 50, 70, 85 and 100oC, using a convection drier at ISU Bloomington to a target moisture of about 14% wet basis. Samples harvested at 14% were not dried further.
Stress cracks in the samples were measured as an index of the effect of drying severity. The dried samples were scanned with an Infratec 1229, that uses near infrared transmittance. Extractable starch yields were predicted using an equation with an R2 of 0.81, and SECV of 1.33. The starch was studied for the effects of high drying temperature on gelatinization using a differential scanning calorimeter (DSC 2920), an electron microscope, and with water activity measurements.
The results indicated that the two harvest moistures were significantly different, with the 25% harvest moisture having higher starch yields, than the 30% corn. Corn dried at temperatures of 50 and 70oC had significantly higher starch yields than those dried at 85 and 100oC.
|
| Beneficiaries |
The beneficiaries of this research are farmers, seed producers, wet millers, ethanol producers, grain traders, and consumers. This research assists in elucidating the effects of temperature and high moisture on reduction in starch yield.
|
Outreach
|
Results of the project have been published as an abstract for the American Association of Cereal Chemists and have been presented at Regional Grain Quality meetings. Research is also discussed with the grain trade, farmers and processors.
|
| Leveraged Funding |
Dupont, $38,000
|
| Related Websites |
|
| Initial Entry Date |
|
| Information Updated
|
December 5, 2001 |
|
