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105392

DEVELOPMENT OF THE DRYING CHARACTERISTIC COEFFICIENTS OF DRIED MARIGOLD PETALS BY USING OF AN ELECTRICAL LABORATORY DRYING SYSTEM

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Last updated: 04 Jan 2025

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Processing Engineering of Agricultural Products

Abstract

Marigold plant is considered one of the most important medicinal plants.  It is used in pharmacological industrials, beauty tools and its pigment is utilized as a natural alternative of chemical pigment. So, the objectives of this paper are to determine the drying characteristic coefficients and investigate the chemical and sensory characteristics of dried marigold petals by utilizing electrical drying equipment at different drying air temperatures and airflow rates. In electrical laboratory drying system (ELDS), the experiments were conducted at two controlled factors to study the drying characteristics for marigold petals, airflow rate (Qe), cu-m/min. at three levels of (0.65, 0.81 and 1.05 cu-m/min.) and drying air temperature (T), °C at four levels of (43, 48, 53 and 63° C).  At high drying air temperature levels of 63°C and air flow rates ranged at 0.65 -1.05 had the best average drying rates of (9.28-11.63% db/min) and the best constant drying rate of (18.61-21.35% db/min).  The highest drying factors were in the range of (3.462-4.56 1/h).  It had the low critical moisture content time of (20-40 min.).  Also it had the best sensory characteristics for color, appearance and quality.  It had the best carotene concentration (Con) value range of 310.35-312.29 mg/g with an excellent unchanging control treatment which had value of 332.39 mg/g.  Drying air temperature (T), °C had a high significant increasing effect on all drying, sensory and chemical characteristics.  Meanwhile, the air flow rate had no significant effect on the previous drying characteristics.

DOI

10.21608/mjae.2011.105392

Authors

First Name

A. Z.

Last Name

Shokr

MiddleName

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Affiliation

Ag. Eng. Dept., Fac. of Ag. (EL-Shatby), Alexandria U., Egypt.

Email

-

City

-

Orcid

-

First Name

E. A.

Last Name

Abdel Ghaffar

MiddleName

-

Affiliation

Ag. Eng. Dept., Fac. of Ag. (EL-Shatby), Alexandria U., Egypt.

Email

-

City

-

Orcid

-

First Name

M. A

Last Name

Rashwan

MiddleName

-

Affiliation

Ag. Eng. Dept., Fac. of Ag. (EL-Shatby), Alexandria U., Egypt.

Email

-

City

-

Orcid

-

First Name

S. S.

Last Name

Shaaban

MiddleName

-

Affiliation

Ag. Eng. Dept., Fac. of Ag. (EL-Shatby), Alexandria U., Egypt.

Email

-

City

-

Orcid

-

Volume

28

Article Issue

1

Related Issue

15951

Issue Date

2011-01-01

Receive Date

2020-07-27

Publish Date

2011-01-01

Page Start

181

Page End

200

Print ISSN

1687-384X

Online ISSN

2636-3062

Article File

MJAE_Volume 28_Issue 1_Pages 181-200.pdf

PDF . 519.4kB

Link

https://mjae.journals.ekb.eg/article_105392.html

Detail API

https://mjae.journals.ekb.eg/service?article_code=105392

Order

11

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

DEVELOPMENT OF THE DRYING CHARACTERISTIC COEFFICIENTS OF DRIED MARIGOLD PETALS BY USING OF AN ELECTRICAL LABORATORY DRYING SYSTEM

Details

Type

Article

Created At

23 Jan 2023