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Effect of Packaging Materiales, Storage Conditions, Cultivar and Extraction Methods on The Extraction Quality of Roselle Calyxes

Article

Last updated: 01 Jan 2025

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Tags

Food Science and technology

Abstract

Effect of packaging materiales, extraction methods and storage period on some quality of two cultivars of Roselle calyxes extracts has been studied. Dark red and light red Roselle calyxes packed in- low density polyethylene (LDPE) and Glass bottles and stored for eight months at room temperature. Two methods were carried out for preparation of Roselle extract from both dark and light cultivars. Soaking in distilled water or acidic water (2% citric acid) at different temperatures (5, 20, 60 and 100 0C) for several periods (1/2 : 24 hrs). The packaging type, cultivars of Roselle, extraction method soaking temperature, soaking period and storage period were highly significant effect for TSS, and anthocyanin, but there are no significant different in pH value with packaging type or extraction method. T.S.S. content was found to be increased by increasing soaking temperature, soaking period and storage period for both  dark and light cultivars packed in (LDPE and Glass bottles) and soaked in distilled water or acidic water (2% citric acid). High total soluble solids content was recorded for dark red cultivar packed in low density polyethylene (LDPE)  and extracted with acidic water (2% citric acid) at 100 0C  for 90 min.The PH values of Roselle calyxes extract was found to be  depending on soaking temperature, soaking period and  storge time.The pH value of light Roselle calyxes extract was less than that of dark red Roselle calyxes extract with all treatments. High decreament in pH value of Roselle calyxes extract was recorded for light red cultivar packed in glass bottle  and extracted with acidic water (2% citric acid) at 100 0C for 90 min. Anthocyanin value increased in Roselle calyxes extracts of both dark and light cultivars with increasing soaking temperature and soaking period in both water or  acidic water (2% citric acid) but decreased with increasing storage period.  

DOI

10.21608/asejaiqjsae.2011.2243

Authors

First Name

Gomaa

Last Name

R. B. A.

MiddleName

-

Affiliation

Food Tech. Res. Inst., Agric. Res. Center, Giza, Egypt.,

Email

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City

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Orcid

-

First Name

M.M.

Last Name

Rashed Nahed

MiddleName

-

Affiliation

Department Medicinal and Aromatic Plants, Agricultural Research Center, Dokki, Giza. Egypt.

Email

-

City

-

Orcid

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Volume

32

Article Issue

APRIL- JUNE

Related Issue

408

Issue Date

2011-06-01

Receive Date

2011-04-03

Publish Date

2011-06-30

Page Start

130

Page End

139

Print ISSN

1110-0176

Online ISSN

2536-9784

Link

https://asejaiqjsae.journals.ekb.eg/article_2243.html

Detail API

https://asejaiqjsae.journals.ekb.eg/service?article_code=2243

Order

5

Type

Original Article

Type Code

53

Publication Type

Journal

Publication Title

Alexandria Science Exchange Journal

Publication Link

https://asejaiqjsae.journals.ekb.eg/

MainTitle

Effect of Packaging Materiales, Storage Conditions, Cultivar and Extraction Methods on The Extraction Quality of Roselle Calyxes

Details

Type

Article

Created At

22 Jan 2023