Assessment of Seasonal and Diurnal Variations of Alkaline Phosphatase Activity in Pasteurized Milk

The present study was conducted to detect the concentration levels of ALP (alkaline phosphatase) in pasteurized milk and determine whether the pasteurization was successful or not, according to WHO Directives, which clearly state that the ALP (alkaline phosphatase) substance in pasteurized milk must...

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Main Authors: Vaia Gerokomou, Georgios Rozos, Panagiotis Demertzis, Konstantoula Akrida-Demertzi
Format: Article
Language:English
Published: MDPI AG 2022-05-01
Series:Applied Sciences
Subjects:
Online Access:https://www.mdpi.com/2076-3417/12/10/4833
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author Vaia Gerokomou
Georgios Rozos
Panagiotis Demertzis
Konstantoula Akrida-Demertzi
author_facet Vaia Gerokomou
Georgios Rozos
Panagiotis Demertzis
Konstantoula Akrida-Demertzi
author_sort Vaia Gerokomou
collection DOAJ
description The present study was conducted to detect the concentration levels of ALP (alkaline phosphatase) in pasteurized milk and determine whether the pasteurization was successful or not, according to WHO Directives, which clearly state that the ALP (alkaline phosphatase) substance in pasteurized milk must be totally inactivated, by implementing a newly developed method. The study, additionally, focused on repeatability, stability of results, the effect of the environmental temperature, the effect of the different origins of the milk and convenience with respect to performance characteristics of three methods for the detection of ALP. The milk samples were collected from different areas of Greece during February 2016–February 2018 and May 2019–January 2020. The novel enzymatic biochemical method, named the “AP test”, showed superior characteristics for a diversity of materials such as milk, whey, cheese and butter in comparison to the other two methods that were used for screening and quantitative estimation of the concentration of ALP in samples.
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spelling doaj.art-10a3379d5e514a2b989dd86bc1cfabc52023-11-23T09:53:51ZengMDPI AGApplied Sciences2076-34172022-05-011210483310.3390/app12104833Assessment of Seasonal and Diurnal Variations of Alkaline Phosphatase Activity in Pasteurized MilkVaia Gerokomou0Georgios Rozos1Panagiotis Demertzis2Konstantoula Akrida-Demertzi3Food Chemistry Lab, Section of Industrial and Food Chemistry, Department of Chemistry, University of Ioannina, 45110 Ioannina, GreeceDepartment of Agriculture, School of Agriculture, University of Ioannina, Kostakioi Artas, 47100 Arta, GreeceFood Chemistry Lab, Section of Industrial and Food Chemistry, Department of Chemistry, University of Ioannina, 45110 Ioannina, GreeceFood Chemistry Lab, Section of Industrial and Food Chemistry, Department of Chemistry, University of Ioannina, 45110 Ioannina, GreeceThe present study was conducted to detect the concentration levels of ALP (alkaline phosphatase) in pasteurized milk and determine whether the pasteurization was successful or not, according to WHO Directives, which clearly state that the ALP (alkaline phosphatase) substance in pasteurized milk must be totally inactivated, by implementing a newly developed method. The study, additionally, focused on repeatability, stability of results, the effect of the environmental temperature, the effect of the different origins of the milk and convenience with respect to performance characteristics of three methods for the detection of ALP. The milk samples were collected from different areas of Greece during February 2016–February 2018 and May 2019–January 2020. The novel enzymatic biochemical method, named the “AP test”, showed superior characteristics for a diversity of materials such as milk, whey, cheese and butter in comparison to the other two methods that were used for screening and quantitative estimation of the concentration of ALP in samples.https://www.mdpi.com/2076-3417/12/10/4833food microbiologyfood industryalkaline phosphatasemilkmilk pasteurization
spellingShingle Vaia Gerokomou
Georgios Rozos
Panagiotis Demertzis
Konstantoula Akrida-Demertzi
Assessment of Seasonal and Diurnal Variations of Alkaline Phosphatase Activity in Pasteurized Milk
Applied Sciences
food microbiology
food industry
alkaline phosphatase
milk
milk pasteurization
title Assessment of Seasonal and Diurnal Variations of Alkaline Phosphatase Activity in Pasteurized Milk
title_full Assessment of Seasonal and Diurnal Variations of Alkaline Phosphatase Activity in Pasteurized Milk
title_fullStr Assessment of Seasonal and Diurnal Variations of Alkaline Phosphatase Activity in Pasteurized Milk
title_full_unstemmed Assessment of Seasonal and Diurnal Variations of Alkaline Phosphatase Activity in Pasteurized Milk
title_short Assessment of Seasonal and Diurnal Variations of Alkaline Phosphatase Activity in Pasteurized Milk
title_sort assessment of seasonal and diurnal variations of alkaline phosphatase activity in pasteurized milk
topic food microbiology
food industry
alkaline phosphatase
milk
milk pasteurization
url https://www.mdpi.com/2076-3417/12/10/4833
work_keys_str_mv AT vaiagerokomou assessmentofseasonalanddiurnalvariationsofalkalinephosphataseactivityinpasteurizedmilk
AT georgiosrozos assessmentofseasonalanddiurnalvariationsofalkalinephosphataseactivityinpasteurizedmilk
AT panagiotisdemertzis assessmentofseasonalanddiurnalvariationsofalkalinephosphataseactivityinpasteurizedmilk
AT konstantoulaakridademertzi assessmentofseasonalanddiurnalvariationsofalkalinephosphataseactivityinpasteurizedmilk