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102353

EFFECT OF WHEAT GERM PRETREATMENT ON OIL EXTRACTION BY EXPELLING MACHINE

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Last updated: 26 Dec 2024

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Processing Engineering of Agricultural Products

Abstract

An atmospheric steam process is used for preheating (in the range of 60-70°C) and increasing the moisture content (m.c.) of the wheat germ to study the effect of such process on machine capacity, percentage of oil recovery, percentage of residual oil, and specific energy consumption (SEC)of a double stage expelling machine for wheat germ oil extraction. Four levels of m.c. (13.2, 15.4, 16.2, and 16.8%), and five screw rotation speeds (25, 35, 45, 55, and 65 rpm) were used. It was found that at 25 rpm of screw speed, increasing m.c. from 13.2% (initial m.c.) to 16.2% (wb.), increased the machine capacity by 23.7%, and increased SEC from 0.043 to 0.482kWhkg-1feed(including the energy consumption needed for steam generation). At 16.2% m.c. and 65rpm screw speed, the percentage of oil recovery and oil productivity were 53.42% and 1.97 litter/h, respectively. The maximum percentage of oil recovery (62%) was obtained at 16.2% m.c. and 25rpm screw speed. The economic feasibility data indicated that the total hourly cost was about 11.80EGP/h, and the total cost of oil extraction was about 49.48 EGP/litter of oil. A net annual profit of 160941.3 EGP can be earned providing a Benefit-Cost-Ratio of 1.07, a Return on Investment (ROI) of 106.5% with a Pay-Back Period of 0.07 yr. In addition, the unit would generate an employment of 480 man-days at rural level.

DOI

10.21608/mjae.2012.102353

Keywords

Wheat germ, Preheating - Oil extraction - Expelling machine

Authors

First Name

M.

Last Name

Mubarak

MiddleName

-

Affiliation

Agric. Eng. Dep., Fac. of Agric., Ain Shams Univ., Cairo, Egypt.

Email

-

City

-

Orcid

-

First Name

M.

Last Name

El-Nono

MiddleName

-

Affiliation

Agric. Eng. Dep., Fac. of Agric., Ain Shams Univ., Cairo, Egypt.

Email

-

City

-

Orcid

-

First Name

T. R.

Last Name

Owies

MiddleName

-

Affiliation

Agric., Eng. Res. Inst. (AEnRI), Dokki- Giza, Egypt.

Email

-

City

-

Orcid

-

First Name

A.M.

Last Name

Abdel-Gawad

MiddleName

-

Affiliation

Agric., Eng. Res. Inst. (AEnRI), Dokki- Giza, Egypt.

Email

-

City

-

Orcid

-

Volume

29

Article Issue

2

Related Issue

15446

Issue Date

2012-04-01

Receive Date

2020-07-11

Publish Date

2012-04-01

Page Start

817

Page End

836

Print ISSN

1687-384X

Online ISSN

2636-3062

Article File

MJAE_Volume 29_Issue 2_Pages 817-836.pdf

PDF . 643.7kB

Link

https://mjae.journals.ekb.eg/article_102353.html

Detail API

https://mjae.journals.ekb.eg/service?article_code=102353

Order

19

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 WHEAT GERM PRETREATMENT ON OIL EXTRACTION BY EXPELLING MACHINE

Details

Type

Article

Created At

23 Jan 2023