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237256

Is The Paper Tea Bags Chemically Contaminated?

Article

Last updated: 01 Jan 2025

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Tags

Home economics

Abstract

Aims: This study aimed to identify the risks of using three brands of the most Egyptian consumers' preferred black tea. Epichlorohydrin (ECH), its metabolite3-monochloropropane-1,2 dial (3-MCPD), and some , were analyzed in the infusions.
Methods: Tea infusion was prepared by adding 100 ml of  boiling deionized water  in fine bone china cups to one bag of the three studied brands, and steeped for 2, 6, and 10 minutes. The effect of adding table sugar (3 or 6 g per cup), as well as the effect of rinsing the bag prior to preparing the teadrink on ECH and 3-MCPD content were estimated. ECH and 3-MCPD were determined using HPGC, while the heavy metals were detected by ICP-MS. The data were statistically analyzed.
Results: The results revealed that, the levels of ECH in all of the teabag infusions of tested brands after the three studied steeping times ranged between 1.68 to 11.40 µg/L. Adding sugar decreased the concentration of ECH in the infusions by 13-20%. Because ECH is easily dissolved in water at room temperature, rinsing the teabag perior preparing the drink removed more than 93% of its ECH content, also empting the tea particles from the bag significantly reduced the ECH concentration in the infusion. Assuming an adult person consumes one litter of tea drink a day, therefore its ECH intake is in the safe levels according to the WHO (2017) when the steeping time 2 min for all studied brands. We recommended to rinse the tea bags or empting the tea particles from the bag before preparing the infusions.
The 3-MCPD was not detected in tea infusions of brand A, while of brand C contained the highest levels of 3-MCPD and these levels increased by increasing steeping time. Fortunately, the concentrations of toxic heavy metals Al, Pb, and Cd were too low in infused samples compared to established guidelines of drinking water (WHO, 2007).
 

DOI

10.21608/asejaiqjsae.2022.237256

Keywords

Black tea, Tea bags, Epichlorohydrin (ECH), metabolite3-monochloropropane-1, 2 dial (3-MCPD), heavy metals (Aluminum, Lead, and Cadmium)

Authors

First Name

Soheir

Last Name

Fouad Nour

MiddleName

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Affiliation

Department of Home Economics, Faculty of Agriculture, Alexandria University.

Email

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City

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Orcid

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First Name

Khalid

Last Name

A Osman

MiddleName

-

Affiliation

Department of Pesticide Chemistry and Technology, Faculty of Agriculture, Alexandria University.

Email

-

City

-

Orcid

-

First Name

Naglaa

Last Name

Abd Elfatah

MiddleName

-

Affiliation

Department of Home Economics, Faculty of Agriculture,Alexandria University.

Email

-

City

-

Orcid

-

First Name

Amany

Last Name

Desouky

MiddleName

-

Affiliation

Department of Home Economics, Faculty of Agriculture, Alexandria University.

Email

-

City

-

Orcid

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Volume

43

Article Issue

2

Related Issue

34169

Issue Date

2022-03-01

Receive Date

2022-03-01

Publish Date

2022-03-01

Page Start

1

Page End

8

Print ISSN

1110-0176

Online ISSN

2536-9784

Article File

ASEJAIQJSAE_Volume 43_Issue 2_Pages 1-8.pdf

PDF . 239.5kB

Link

https://asejaiqjsae.journals.ekb.eg/article_237256.html

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https://asejaiqjsae.journals.ekb.eg/service?article_code=237256

Order

11

Type

Original Article

Type Code

53

Publication Type

Journal

Publication Title

Alexandria Science Exchange Journal

Publication Link

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

MainTitle

Is The Paper Tea Bags Chemically Contaminated?

Details

Type

Article

Created At

22 Jan 2023