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214556

Improving the Storage Stability and Keeping Quality of Modified Papaya Juices Stored under Refrigeration Conditions

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Last updated: 22 Jan 2023

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Abstract

Fresh papaya puree was blended with orange, strawberry, mango and guava to improve the nutritional and quality properties of the mixed juices. The produced juices were evaluated for their nutritional, physicochemical, microbiological and sensory characteristics. The effect of pasteurization (at ~ 65ºC/20 min) and/or chemical preservatives (0.05% potassium sorbate + 0.05% potassium metabisulphite) on the quality and shelf stability of papaya juices was also investigated during cold storage (at ~ 4oC) for 6 months. The results showed that, the combined action of the thermal treatment and chemical preservatives (T3) on the quality and shelf stability of papaya juices was better than using either of them alone. During refrigerated storage, the values of moisture, pH, ascorbic acid and total phenolics significantly decreased as the storage time increased. While, the total soluble solids and titratable acidity values significantly increased. Despite this decrease, all juice samples remained satisfactory sources of ascorbic acid and phenolic compounds over the storage period. The sensory quality of papaya juices remained acceptable for up to six months. The total bacterial counts were less than 102 cfu/g for all juice samples. Yeasts and moulds were absent during refrigerated storage. Consequently, no potential microbial risk was associated with the storage conditions. As a conclusion, the papaya fruits could be successfully used singly or in combination with orange, strawberry, mango and guava to obtain delicious and healthy nutritious juices. The modified papaya juices (75% papaya + 25% orange/strawberry/mango/guava) had acceptable quality attributes, improved nutritional value, improved shelf stability and microbiological safety.

DOI

10.21608/jfds.2021.110201.1030

Keywords

Papaya, Orange, strawberry, Mango, guava, preservatives, pasteurization

Authors

First Name

O.

Last Name

Abdel-Gawad

MiddleName

A.

Affiliation

Food Science Dept., Fac. of Agric., Minia Univ., Minia, Egypt.

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First Name

H.

Last Name

Abdel-Aal

MiddleName

A.

Affiliation

Food Science Dept., Fac. of Agric., Minia Univ., Minia, Egypt.

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Orcid

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First Name

F.

Last Name

El-Soukkary

MiddleName

A. H.

Affiliation

Food Science Dept., Fac. of Agric., Minia Univ., Minia, Egypt.

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Orcid

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First Name

Sanaa

Last Name

Abdel-Hameed

MiddleName

M.

Affiliation

Food Science Dept., Fac. of Agric., Minia Univ., Minia, Egypt

Email

sanaa.mohamed@minia.edu.eg

City

Minia

Orcid

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Volume

12

Article Issue

12

Related Issue

30180

Issue Date

2021-12-01

Receive Date

2022-01-17

Publish Date

2021-12-01

Page Start

301

Page End

313

Print ISSN

2090-3650

Online ISSN

2090-3731

Link

https://jfds.journals.ekb.eg/article_214556.html

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https://jfds.journals.ekb.eg/service?article_code=214556

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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