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98929

ONION PROPERTIES CHANGES AS AFFECTED BY DIFFERENT STORAGE CONDITIONS

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Last updated: 26 Dec 2024

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Abstract

In the tropics, onion (Allium cepa L.) bulbs are usually stored in shelters under ambient conditions resulting in severe losses. Storage conditions play an important role in affecting the physical, chemical, and biological change of onion bulbs. The objective of this work was to study the properties of onion bulbs as affected by storage conditions. Three different storage conditions were used namely, forced ventilated, natural ventilated and traditional storage systems. The properties of the onion bulbs that to be studied were equatorial and polar diameters, hardness, dry matter, total soluble solids, total carbohydrates. The results indicated that, the average temperature in center of onion pile   during the storage period ranged between 16.73 to 28.61 ˚C for the forced ventilated, where it was ranged between 18.18 to 31.03 ˚C for the natural ventilated, while in traditional storage system ranged between 19.52 to 32.93 ˚C. The equatorial and polar diametre change ranged between 69.33-73.44, 68.56-72.78 and 66.22-73.11mm and 53.22-57.11, 55.22-59 and 49-57.56mm for the forced ventilated, natural ventilated and traditional storage system, respectively, and the lowest changes in equatorial and polar diameter were 1.1 and 1.17%, respectively, which recorded in traditional storage system, the highest  value of hardness was recorded the onion stored in forced ventilated and natural ventilated (17.20 and 17.07 kgf), respectively. The highest TSS% was obtained in forced ventilated 14.40% and  highest mean of dry  matter contents recorded when  the  bulbs  stored  in  natural ventilated and forced ventilated (15.94, 15.89%), respectively, On the other hand, bulbs after 7 months of storage showed highest carbohydrates mean percentage in forced and natural ventilated  (8.08 and 8.05%), respectively. 

DOI

10.21608/mjae.2014.98929

Keywords

onion bulbs, Temperature, relative humidity, forced ventilation, Natural Ventilation, equatorial and polar diameters, hardness, total soluble solids, carbohydrates

Authors

First Name

M. H.

Last Name

Hatem

MiddleName

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Affiliation

Agric. Eng. Dept., Fac. of Agric., Cairo University, Egypt

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Orcid

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First Name

S. A.

Last Name

Shehata

MiddleName

-

Affiliation

Agric. Eng. Dept., Fac. of Agric., Cairo University, Egypt

Email

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City

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Orcid

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First Name

Y. B.

Last Name

AbdEl-hay

MiddleName

-

Affiliation

Veg. Dept., Fac. of Agric., Cairo University, Egypt

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Orcid

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First Name

Karima F.

Last Name

AbdEl-Gwad

MiddleName

-

Affiliation

Agric. Eng. Dept., Fac. of Agric.,Zalingei University, Sudan

Email

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City

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Orcid

-

First Name

B. A

Last Name

Abaker

MiddleName

-

Affiliation

Agric. Eng. Dept., Fac. of Agric.,Zalingei University, Sudan

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Volume

31

Article Issue

3

Related Issue

14934

Issue Date

2014-07-01

Receive Date

2020-06-29

Publish Date

2014-07-01

Page Start

937

Page End

958

Print ISSN

1687-384X

Online ISSN

2636-3062

Article File

MJAE_Volume 31_Issue 3_Pages 937-958.pdf

PDF . 1.5MB

Link

https://mjae.journals.ekb.eg/article_98929.html

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https://mjae.journals.ekb.eg/service?article_code=98929

Order

14

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

ONION PROPERTIES CHANGES AS AFFECTED BY DIFFERENT STORAGE CONDITIONS

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Article

Created At

23 Jan 2023