Open AccessStudy of changes in physical and chemical properties of corn during drying and storage process using a modified in-store dryer
Author(s) -
Diswandi Nurba,
Raida Agustina,
M. Zahara
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/644/1/012016
Subject(s) - water content , chemical composition , chemistry , fiber , moisture , food science , pulp and paper industry , geotechnical engineering , organic chemistry , engineering
In-Store Dryer (ISD) is a dryer with a convective system for grain that also serves as a storage. This research was conducted to study the effect of drying and storage—In-Store Dryer (ISD) on maize's physical and chemical properties. Carried out a 200 kg maize capacity test with 60 cm material stack thickness divided into three layers of piles with a thickness of each layer is 20 cm. Drying occurs at the average drying temperature of 38,6°C with an average RH environment of 76,8% and an average RH of dryer space of 52,2%. Drying for 32 hours using ISD can dry the maize with the pre-drying material's initial moisture content of 20.14% to 13.56%, the right water content for storage. The drying process can affect ash, fat, protein, and maize fiber's physical and chemical composition. The chemical composition on the pre-drying are: Ash content 0,72%, Fat content 5,62%, Protein 7,64% and Fiber 2,81%. The maize's chemical components undergo post-drying change to become: Ash content 0,8%, Fat content 5,11%, Protein 7,82%, and Fiber 2,52%. The changing of all components is affected by temperature during the drying process, causing a decrease in water content, affecting other chemical components. The analysis result of maize's nutritional components after drying and storage for 30 days using the In-Store Dryer can maintain maize quality. The analysis result of each component that is the Water Content 11.98%, Ash 1.13%, Fat 5.03%, Protein 8, 05%, and 1.8% fiber, and this is by the provisions of SNI 01-4483-1998 for animal feed.