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EFFECT OF DRYING TEMPERATURES ON STRESS CRACKS AND BREAKAGE SUSEPTIBILITY OF CORN GRAINS

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Last updated: 04 Jan 2025

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Processing Engineering of Agricultural Products

Abstract

Stress cracking of two corn hybrids (White, SC-10 and Yellow, SC-162) dried at various temperatures (35, 50, 60, 75 and 100oC) from 21.2% to 13% moisture content and tempered for 24hr at ambient temperature  (221 oC with available relative humidity) were tested. A breakage tester (BT-drop tester) was manufactured and a single-grain breakage susceptibility of two corn hybrids at various grain temperatures and times after drying (0, 3 ,6 , 10, 20 and 30min) were evaluated. The results indicated that, the damage index significantly increased as the drying  temperature increased for two corn hybrids except at 100oC with SC-162, it was decreased. The SC-162 was more susceptible to cracking more than SC-10 hybrid especially at lower grain temperature. Also, the predicted models and observation showed that both hybrids were plastic and had minimal breakage susceptibility at high grain temperatures from 72 to 93oC, while, decreasing grain temperature increased breakage exponentially. After drying at both 75 and 100oC, the breakage of the two corn hybrids increased rapidly for the first 10min after drying and reached an asymptotic level after around 10min cooling after finishing drying at ambient temperature. At the same drying temperature (75oC), the breakage susceptibility increased by 37.4% for SC-10 and by 51.5% for SC-162 with the average stress cracks (multiple and checked) kernels for two hybrids of about 20.2%.

DOI

10.21608/mjae.2020.110163

Authors

First Name

Mohamed I.

Last Name

Shoughy

MiddleName

-

Affiliation

Researcher at the Agric. Eng Res. Inst. (AEnRI), Dokki, Giza, Egypt.

Email

shoughy_aeri@yahoo.com

City

-

Orcid

-

First Name

Sammy A.

Last Name

Marey

MiddleName

-

Affiliation

Researcher at the Agric. Eng Res. Inst. (AEnRI), Dokki, Giza, Egypt.

Email

-

City

-

Orcid

-

First Name

Abbas A.

Last Name

El-Shenawy

MiddleName

-

Affiliation

Chief Researcher and Head of the corn Res. Sec., Field Crops Res. Inst., Giza, Egypt.

Email

-

City

-

Orcid

-

Volume

26

Article Issue

1

Related Issue

16679

Issue Date

2009-01-01

Receive Date

2020-08-30

Publish Date

2009-01-01

Page Start

453

Page End

468

Print ISSN

1687-384X

Online ISSN

2636-3062

Article File

MJAE_Volume 26_Issue 1_Pages 453-468.pdf

PDF . 385.0kB

Link

https://mjae.journals.ekb.eg/article_110163.html

Detail API

https://mjae.journals.ekb.eg/service?article_code=110163

Order

24

Type

Original Article

Type Code

1,326

Publication Type

Journal

Publication Title

Misr Journal of Agricultural Engineering

Publication Link

https://mjae.journals.ekb.eg/

MainTitle

EFFECT OF DRYING TEMPERATURES ON STRESS CRACKS AND BREAKAGE SUSEPTIBILITY OF CORN GRAINS

Details

Type

Article

Created At

23 Jan 2023