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48522

IMPACT OF HOT-AIR DRYING TEMPERATURE AND VELOCITY ON DRYING KINETICS, COLOR, PHYTOCHEMICALS AND ANTIOXIDANT ACTIVITY OF CAPE GOOSEBERRY (Physalis peruviana l.) FRUITS

Article

Last updated: 04 Jan 2025

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Abstract

                The impact of temperature and air velocity during hot-air drying on the drying kinetics and some quality attributes of cape gooseberry fruit halves was studied. Experiments were conducted at 60 and 70 ºC as well as at air velocities of 0.4 and 0.6 m/ s. Experimental drying curves showed that drying process took place in the falling rate period. Thomson, Wand and Singh, and Page models showed a better fit to describe the drying curves of cape gooseberry fruits. Effective moisture diffusion increased with increasing the temperature, air velocity and the activation energy was found to be 38.78 KJ/ mol. Chromatic coordinates (L*, a* and b*) as well as total color difference (ΔE), Chroma and Hue angle were affected by drying air temperature and velocity. Drying process caused a reduction in the β–carotene, total phenolics, total flavonoids contents and antioxidant activity; either determined by DPPH and/ or ABTS assays, of the dried fruits with non-significant reduction at 70 ºC as compared to fresh fruits. A high correlation was observed between fruit bioactive components (total phenolics and flavonoids as well as β–carotene) with antioxidant capacity. Thus, the dried fruits have potential for the development  and production of many functional food products.

DOI

10.21608/jfds.2015.48522

Keywords

Cape gooseberry, Drying kinetics, phytochemicals, Antioxidant activity, Color, Quality

Authors

First Name

K.

Last Name

Youssef

MiddleName

M.

Affiliation

Food Technology Department, Faculty of Agriculture, Suez Canal University, Ismailia 41522, Egypt

Email

kmyoussef73@yahoo.com

City

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Orcid

-

Volume

6

Article Issue

1

Related Issue

7548

Issue Date

2015-01-01

Receive Date

2019-09-19

Publish Date

2015-01-01

Page Start

23

Page End

40

Print ISSN

2090-3650

Online ISSN

2090-3731

Link

https://jfds.journals.ekb.eg/article_48522.html

Detail API

https://jfds.journals.ekb.eg/service?article_code=48522

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2

Type

Original Article

Type Code

886

Publication Type

Journal

Publication Title

Journal of Food and Dairy Sciences

Publication Link

https://jfds.journals.ekb.eg/

MainTitle

IMPACT OF HOT-AIR DRYING TEMPERATURE AND VELOCITY ON DRYING KINETICS, COLOR, PHYTOCHEMICALS AND ANTIOXIDANT ACTIVITY OF CAPE GOOSEBERRY (Physalis peruviana l.) FRUITS

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Article

Created At

22 Jan 2023