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Pomegranate (Punica granatum) Peels Powder as a Promising Application in Green Technology

Article

Last updated: 03 Jan 2025

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Abstract

Peels with rinds of Wonderful cultivar pomegranate were used. Pomegranate wastes (PW) globally represent
1.62 million tons. Such wastes have a detrimental effect to the environment and contribute to methane emissions.
An application of green technology to minimize processing wastes was suggested. Hot air and vacuum drying of PW
resulted in pomegranate peel powder (PPP). The hot air dried and vacuum dried of PPP contained pectin (10.9 & 14.9
%) , total phenols (125 & 151.7) as gallic acid equivalent /g, neutral detergent fiber (15.8 & 12.3), acid detergent fiber
(9.1 &6.6), lignin (2.4 &1.6), cellulose (6.7 & 5.0), and hemi-cellulose( 6.8 & 5.7%), respectively. The PPP was found
to be rich in potassium, sodium, calcium and phosphorus, in addition to iron, zinc, and manganese. Three methods for
extraction pectin and total polyphenols from PPP were investigated. The three extraction methods are hydrochloric
acid extraction, hydrothermal extraction, and a novel method of probe sonication with cellulase. The extraction of
pectin ranged between 4.5 to 11.0 %, and total phenols 51.4 to 108.6 mg gallic acid equivalent/g. Hydrochloric acid
extraction showed the highest pectin and total phenols yield. The yield from the three extraction methods is low and
the three methods are energy and time consuming, and are sources of corrosive chemicals. In conclusion drying PW
is considered a beneficial green technology for extending the shelf-life of PW. The dehydration resulted in PPP rich
in many bioactive components and minerals with acceptable colour.

DOI

10.21608/ajfs.2023.321115

Keywords

pomegranate, fibers, pectin, phenols, minerals, colour

Authors

First Name

Faten

Last Name

Abdel-salam

MiddleName

F

Affiliation

Food Science and Technology Dept. Fac. of Agric. El-Shatby, 21545, Univ. of Alex., Alexandria, Egypt.

Email

faten.mohamed@alexu.edu.eg

City

الإسكندرية

Orcid

0000-0002-4554-6440

First Name

Esmat

Last Name

Elzalaky

MiddleName

-

Affiliation

Food Science and Technology Dept. Fac. of Agric. El-Shatby, 21545, Univ. of Alex., Alexandria, Egypt.

Email

esza717@hotmail.com

City

-

Orcid

-

First Name

Amal

Last Name

Abd El-Razek

MiddleName

M

Affiliation

Food Science and Technology Dept. Fac. of Agric. El-Shatby, 21545, Univ. of Alex., Alexandria, Egypt.

Email

abdelrazek.amal@yahoo.com

City

-

Orcid

-

First Name

omaima

Last Name

Askar

MiddleName

N

Affiliation

Food Science and Technology Dept. Fac. of Agric. El-Shatby, 21545, Univ. of Alex., Alexandria, Egypt.

Email

omaimanagy523@gmail.com

City

الإسكندرية

Orcid

-

Volume

21

Article Issue

1

Related Issue

43910

Issue Date

2023-06-01

Receive Date

2023-10-12

Publish Date

2023-06-01

Page Start

1

Page End

10

Print ISSN

1687-3920

Link

https://ajfs.journals.ekb.eg/article_321115.html

Detail API

https://ajfs.journals.ekb.eg/service?article_code=321115

Order

321,115

Type

Original Article

Type Code

638

Publication Type

Journal

Publication Title

Alexandria Journal of Food Science and Technology

Publication Link

https://ajfs.journals.ekb.eg/

MainTitle

Pomegranate (Punica granatum) Peels Powder as a Promising Application in Green Technology

Details

Type

Article

Created At

30 Dec 2024