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163511

Drying Temperature and Storage Period and Their Relation to Stevia Leaf Chemical Composition

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Last updated: 23 Jan 2023

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Abstract

Stevia (Stevia Rebaudiana Bertoni)is a herbal plant with increasing attention due to its high potency sweetener worldwide. Nevertheless, its leaves are highly moisten and are susceptible to rapid degrade. Therefore, two field experiments were carried out at the experimental farm, Sakha Agric. Res. Station in Kafr El-Sheikh-Governorate, Egypt in 2017 and 2018 seasons, to study the effect of drying temperatures (60, 70, 80 and 90 °C) in addition to shade drying and storage period (one, two, three and four months) compared to the control (after harvest directly) on quality of stevia leaves. All combination treatments were allocated in randomized complete block design (RCBD) in three replications, where one cut (one harvest) was taken after 5 months from planting to determine the i. e. stevioside%, rebaudioside% rebaudioside/ stevioside ratio, carbohydrate content and weight loss during storage (storability) as well as correlation coefficient during both seasons of 2017 and 2018. The most important results showed that Increasing drying temperature to 90 °C positively significantly affected;(p < em>≤0.05) stevioside, rebaudioside and carbohydrate percentages. However decreased both the ratio between rebaudioside/stevioside and weight loss of leaves was obtained during both seasons. All storage times, significantly (p < em>≤0.05) decreased values of all studied characters during storage up to four months during the both seasons. Correlation coefficients indicated significant positive correlation ones among stevioside and rebaudioside and ratio of rebaudioside/ stevioside and carbohydrate%; however, storability recorded negative significant correlation with other characters under study in the both seasons.

DOI

10.21608/jalexu.2019.163511

Keywords

stevia plant, Stevioside syrup and total phenols, Rebaudioside A, Carbohydrate Antigen CA 15-3, stevia storability, dry leaves of stevia

Authors

First Name

Moamn

Last Name

Zalat

MiddleName

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Affiliation

Plant. Prod. Dept., Fac. Agric. (Saba bash), Alex. Univ., Egypt

Email

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City

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Orcid

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First Name

Ali

Last Name

Abido

MiddleName

Ibrahim

Affiliation

Plant. Prod. Dept., Fac. Agric. (Saba bash), Alex. Univ., Egypt

Email

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City

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Orcid

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First Name

Fathy

Last Name

Radwan

MiddleName

Ibrahim

Affiliation

Plant. Prod. Dept., Fac. Agric. (Saba bash), Alex. Univ., Egypt

Email

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City

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Orcid

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First Name

Ashraf

Last Name

Zeitoun

MiddleName

Abdelmonem

Affiliation

Food. Sci. Dept., Fac. Agric. (Saba bash), Alex. Univ., Egypt

Email

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City

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Orcid

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First Name

Elsaid

Last Name

Shaaban

MiddleName

Hassan

Affiliation

Hort. Inst., Agric. Res. Center, Giza, Egypt

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Volume

24

Article Issue

4

Related Issue

23654

Issue Date

2019-12-01

Receive Date

2019-12-11

Publish Date

2019-12-31

Page Start

590

Page End

603

Print ISSN

1110-5585

Online ISSN

2785-9525

Link

https://jalexu.journals.ekb.eg/article_163511.html

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https://jalexu.journals.ekb.eg/service?article_code=163511

Order

12

Type

Research papers

Type Code

1,789

Publication Type

Journal

Publication Title

Journal of the Advances in Agricultural Researches

Publication Link

https://jalexu.journals.ekb.eg/

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Article

Created At

23 Jan 2023