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115795

PRODUCTION OF CLOUDY APPLE DRINKS USING PECTINASES

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Last updated: 22 Jan 2023

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Abstract

Apple fruits (Malus spp < /em>., Anna cultivar)which collected from Racheed (El-Behara governorate) in Egypt were processed to produce cloudy apple juices using commercial pectinases. Cellulase treatments were considered as comparable treatments. Apple pulp was blanched in microwave for 4 min for browning inhibition. Enzymes were applied to microwave-blanched apple mashes at different concentrations for 30 min at 45°C. Cloudy apple drinks stored at refrigerator temperature (4°C) for six months. Drinks were evaluated periodically for TSS, acidity % (as citric acid), pH, cloud stability (absorbance at 660nm), colour (L, a and b value), reducing sugars and total sugars % . The data showed that, addition of pectinases and cellulase increased TSS and juice yield on the expenses of clould stability. Conducted concentrations of the enzymes showed good balance between yield, TSS and cloud stability. All treatments including the control were highly accepted by the panelists and showed not less than "satisficatory" by the end of the storage period for any quality aspects. Also drinks remained good microbiological quality up to the end of the storage period.

DOI

10.21608/jfds.2009.115795

Keywords

Anna Apple, cloudy apple juices, pectinases, chemical and physical characteristics and sensory assessment

Authors

First Name

Nancy I.

Last Name

Fahem

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Affiliation

Food Technology Dept., Fac. of Agric., Suez Canal Univ., Ismailia, Egypt.

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First Name

G. A.

Last Name

Mostafa

MiddleName

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Affiliation

Food Technology Dept., Fac. of Agric., Suez Canal Univ., Ismailia, Egypt.

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Orcid

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First Name

H. T.

Last Name

Omran

MiddleName

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Affiliation

Food Technology Dept., Fac. of Agric., Suez Canal Univ., Ismailia, Egypt.

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City

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Orcid

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First Name

H.

Last Name

Buckenhueskes

MiddleName

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Affiliation

Hohenheim University, Germany.

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Volume

34

Article Issue

8

Related Issue

17503

Issue Date

2009-08-01

Receive Date

2020-09-28

Publish Date

2009-08-01

Page Start

8,773

Page End

8,788

Print ISSN

2090-3650

Online ISSN

2090-3731

Link

https://jfds.journals.ekb.eg/article_115795.html

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https://jfds.journals.ekb.eg/service?article_code=115795

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4

Type

Original Article

Type Code

886

Publication Type

Journal

Publication Title

Journal of Food and Dairy Sciences

Publication Link

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

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Article

Created At

22 Jan 2023