eCommons

 

LACTOSE OXIDASE AS AN INHIBITORY AGENT EFFECTIVE AGAINST BLUE DISCOLORATION IN TWO TYPES OF MOZZARELLA CHEESE

Other Titles

Abstract

Blue discoloration in fresh mozzarella cheese (FMC) is a defect caused specifically by Pseudomonas fluorescens. In the current study, lactose oxidase (LO) was demonstrated to be an effective hurdle to prevent the formation of blue color defects in FMC. In cheese produced through direct acidification (DA) by addition of citric acid, surface application of LO at a concentration of 1.2 g/L resulted in retention of conventional color characteristics; a concentration of 0.12 g/L also performed favorably, depending on variables such as product composition or initial contamination level. A LO concentration of 0.012 g/L did not show an inhibitory effect. Quantification of LO’s effects on blue discoloration in fresh mozzarella produced by starter fermentation (SF) revealed less consistency than that seen with DA FMC. However, based on the researchers’ visual assessments, the 1.2 g/L concentration performed the best out of those investigated, with obvious blue coloration occurring in only 1 out of 6 samples. This study demonstrates a promising clean-label approach to prevent blue color defects in FMC; further studies need to be conducted to fine-tune this process depending on the method used for acidification of cheese, potential initial levels of contamination, and packaging applied.

Journal / Series

Volume & Issue

Description

Sponsorship

Date Issued

2021-05

Publisher

Keywords

Location

Effective Date

Expiration Date

Sector

Employer

Union

Union Local

NAICS

Number of Workers

Committee Chair

Weidmann, Martin

Committee Co-Chair

Committee Member

Degree Discipline

Degree Name

Degree Level

Master of Professional Studies

Related Version

Related DOI

Related To

Related Part

Based on Related Item

Has Other Format(s)

Part of Related Item

Related To

Related Publication(s)

Link(s) to Related Publication(s)

References

Link(s) to Reference(s)

Previously Published As

Government Document

ISBN

ISMN

ISSN

Other Identifiers

Rights

Attribution-NonCommercial-NoDerivatives 4.0 International

Types

term paper

Accessibility Feature

Accessibility Hazard

Accessibility Summary

Link(s) to Catalog Record