Viability and growth promotion of starter and probiotic bacteria in yogurt supplemented with whey protein hydrolysate during refrigerated storage
The effect of whey protein hydrolysate (WPH) addition on growth of standard yoghurt cultures and Bifidobacterium adolescentis during co-fermentation and its viability during storage at 4ºC in yoghurts has been evaluated. WPH was obtained with the use of serine protease from Y. lipolytica yeast. Stir...
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Index Copernicus International S.A.
2017-11-01
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doaj-19d921f2e36d4128be261a639cb4597a2020-11-24T23:07:12ZengIndex Copernicus International S.A.Postępy Higieny i Medycyny Doświadczalnej0032-54491732-26932017-11-017195295910.5604/01.3001.0010.586601.3001.0010.5866Viability and growth promotion of starter and probiotic bacteria in yogurt supplemented with whey protein hydrolysate during refrigerated storageAnna Dąbrowska0Konrad Babij1Marek Szołtysik2Józefa Chrzanowska3Department of Animal Products Technology and Quality Management Wrocław University of Environmental and Life Sciences, Wrocław, PolandDepartment of Animal Products Technology and Quality Management Wrocław University of Environmental and Life Sciences, Wrocław, PolandDepartment of Animal Products Technology and Quality Management Wrocław University of Environmental and Life Sciences, Wrocław, PolandDepartment of Animal Products Technology and Quality Management Wrocław University of Environmental and Life Sciences, Wrocław, PolandThe effect of whey protein hydrolysate (WPH) addition on growth of standard yoghurt cultures and Bifidobacterium adolescentis during co-fermentation and its viability during storage at 4ºC in yoghurts has been evaluated. WPH was obtained with the use of serine protease from Y. lipolytica yeast. Stirred probiotic yoghurts were prepared by using whole milk standardized to 16% of dry matter with the addition of either whey protein concentrate, skim milk powder (SMP), WPH-SMP (ratio 1:1), WPH. The hydrolysate increased the yoghurt culture counts at the initial stage of fermentation and significantly inhibited the decrease in population viability throughout the storage at 4ºC in comparison to the control. The post-fermentation acidification was also retarded by the addition of WPH. The hydrolysate did not increase the Bifidobacterium adolescentis counts at the initial stage. However, the WPH significantly improved its viability. After 21 days of storage, in the yogurts supplemented with WPH, the population of these bacteria oscillated around 3.04 log10 CFU/g, while in samples where SMP or whey protein concentrate was used, the bacteria were no longer detected. http://phmd.pl/gicid/01.3001.0010.5866Bifidobacteriumwhey protein hydrolysateYarrowia lipolyticacell viability |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Anna Dąbrowska Konrad Babij Marek Szołtysik Józefa Chrzanowska |
spellingShingle |
Anna Dąbrowska Konrad Babij Marek Szołtysik Józefa Chrzanowska Viability and growth promotion of starter and probiotic bacteria in yogurt supplemented with whey protein hydrolysate during refrigerated storage Postępy Higieny i Medycyny Doświadczalnej Bifidobacterium whey protein hydrolysate Yarrowia lipolytica cell viability |
author_facet |
Anna Dąbrowska Konrad Babij Marek Szołtysik Józefa Chrzanowska |
author_sort |
Anna Dąbrowska |
title |
Viability and growth promotion of starter and probiotic bacteria in yogurt supplemented with whey protein hydrolysate during refrigerated storage |
title_short |
Viability and growth promotion of starter and probiotic bacteria in yogurt supplemented with whey protein hydrolysate during refrigerated storage |
title_full |
Viability and growth promotion of starter and probiotic bacteria in yogurt supplemented with whey protein hydrolysate during refrigerated storage |
title_fullStr |
Viability and growth promotion of starter and probiotic bacteria in yogurt supplemented with whey protein hydrolysate during refrigerated storage |
title_full_unstemmed |
Viability and growth promotion of starter and probiotic bacteria in yogurt supplemented with whey protein hydrolysate during refrigerated storage |
title_sort |
viability and growth promotion of starter and probiotic bacteria in yogurt supplemented with whey protein hydrolysate during refrigerated storage |
publisher |
Index Copernicus International S.A. |
series |
Postępy Higieny i Medycyny Doświadczalnej |
issn |
0032-5449 1732-2693 |
publishDate |
2017-11-01 |
description |
The effect of whey protein hydrolysate (WPH) addition on growth of standard yoghurt cultures and Bifidobacterium adolescentis during co-fermentation and its viability during storage at 4ºC in yoghurts has been evaluated. WPH was obtained with the use of serine protease from Y. lipolytica yeast. Stirred probiotic yoghurts were prepared by using whole milk standardized to 16% of dry matter with the addition of either whey protein concentrate, skim milk powder (SMP), WPH-SMP (ratio 1:1), WPH. The hydrolysate increased the yoghurt culture counts at the initial stage of fermentation and significantly inhibited the decrease in population viability throughout the storage at 4ºC in comparison to the control. The post-fermentation acidification was also retarded by the addition of WPH. The hydrolysate did not increase the Bifidobacterium adolescentis counts at the initial stage. However, the WPH significantly improved its viability. After 21 days of storage, in the yogurts supplemented with WPH, the population of these bacteria oscillated around 3.04 log10 CFU/g, while in samples where SMP or whey protein concentrate was used, the bacteria were no longer detected.
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topic |
Bifidobacterium whey protein hydrolysate Yarrowia lipolytica cell viability |
url |
http://phmd.pl/gicid/01.3001.0010.5866 |
work_keys_str_mv |
AT annadabrowska viabilityandgrowthpromotionofstarterandprobioticbacteriainyogurtsupplementedwithwheyproteinhydrolysateduringrefrigeratedstorage AT konradbabij viabilityandgrowthpromotionofstarterandprobioticbacteriainyogurtsupplementedwithwheyproteinhydrolysateduringrefrigeratedstorage AT marekszołtysik viabilityandgrowthpromotionofstarterandprobioticbacteriainyogurtsupplementedwithwheyproteinhydrolysateduringrefrigeratedstorage AT jozefachrzanowska viabilityandgrowthpromotionofstarterandprobioticbacteriainyogurtsupplementedwithwheyproteinhydrolysateduringrefrigeratedstorage |
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