Storage Stability of Antioxidant in Milk Products Fermented with Selected Kefir Grain Microflora

The aim of the study was to assess the antioxidant potential of goat’s milk and whey from goat’s milk fermented with selected bacteria strains from kefir grain (<i>L. plantarum</i>, <i>L. fermentum</i>, <i>L. rhamnosus</i> and <i>L. acidophilus</i>) wi...

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Main Authors: Agata Biadała, Noranizan Mohd Adzahan
Format: Article
Language:English
Published: MDPI AG 2021-05-01
Series:Molecules
Subjects:
Online Access:https://www.mdpi.com/1420-3049/26/11/3307
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author Agata Biadała
Noranizan Mohd Adzahan
author_facet Agata Biadała
Noranizan Mohd Adzahan
author_sort Agata Biadała
collection DOAJ
description The aim of the study was to assess the antioxidant potential of goat’s milk and whey from goat’s milk fermented with selected bacteria strains from kefir grain (<i>L. plantarum</i>, <i>L. fermentum</i>, <i>L. rhamnosus</i> and <i>L. acidophilus</i>) with regard to fermented cow’s milk with the same bacteria strains. The assessment of antioxidant potential was made by ABTS, DPPH, TPC and FRAP methods. The work also assessed metabolic activity of tested lactic acid bacteria using measurement of electrical impedance changes in the growing medium. The highest values describing the antioxidant potential were found for fermented milk by <i>L. acidophilus</i>. It was also found that the time of cooling storage causes significantly increasing the antioxidant potential of most analyzed samples. Metabolic activity of tested lactic acid bacteria was the highest for cow’s milk. The course of curves for goat’s milk and whey from goat’s milk was similar, which confirms the differences between cow and goat milk.
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spelling doaj.art-d8bbbc1ea395449bbad105432bb618a52023-11-21T22:13:24ZengMDPI AGMolecules1420-30492021-05-012611330710.3390/molecules26113307Storage Stability of Antioxidant in Milk Products Fermented with Selected Kefir Grain MicrofloraAgata Biadała0Noranizan Mohd Adzahan1Department of Food Quality and Safety Management, Faculty of Food Science and Nutrition, Poznan University of Life Sciences, Wojska Polskiego 31, 60-624 Poznan, PolandDepartment of Food Technology, Faculty of Food Science and Technology, University Putra Malaysia, Serdang 43400, Selangor, MalaysiaThe aim of the study was to assess the antioxidant potential of goat’s milk and whey from goat’s milk fermented with selected bacteria strains from kefir grain (<i>L. plantarum</i>, <i>L. fermentum</i>, <i>L. rhamnosus</i> and <i>L. acidophilus</i>) with regard to fermented cow’s milk with the same bacteria strains. The assessment of antioxidant potential was made by ABTS, DPPH, TPC and FRAP methods. The work also assessed metabolic activity of tested lactic acid bacteria using measurement of electrical impedance changes in the growing medium. The highest values describing the antioxidant potential were found for fermented milk by <i>L. acidophilus</i>. It was also found that the time of cooling storage causes significantly increasing the antioxidant potential of most analyzed samples. Metabolic activity of tested lactic acid bacteria was the highest for cow’s milk. The course of curves for goat’s milk and whey from goat’s milk was similar, which confirms the differences between cow and goat milk.https://www.mdpi.com/1420-3049/26/11/3307goat milkkefir grain microfloraantioxidant activity
spellingShingle Agata Biadała
Noranizan Mohd Adzahan
Storage Stability of Antioxidant in Milk Products Fermented with Selected Kefir Grain Microflora
Molecules
goat milk
kefir grain microflora
antioxidant activity
title Storage Stability of Antioxidant in Milk Products Fermented with Selected Kefir Grain Microflora
title_full Storage Stability of Antioxidant in Milk Products Fermented with Selected Kefir Grain Microflora
title_fullStr Storage Stability of Antioxidant in Milk Products Fermented with Selected Kefir Grain Microflora
title_full_unstemmed Storage Stability of Antioxidant in Milk Products Fermented with Selected Kefir Grain Microflora
title_short Storage Stability of Antioxidant in Milk Products Fermented with Selected Kefir Grain Microflora
title_sort storage stability of antioxidant in milk products fermented with selected kefir grain microflora
topic goat milk
kefir grain microflora
antioxidant activity
url https://www.mdpi.com/1420-3049/26/11/3307
work_keys_str_mv AT agatabiadała storagestabilityofantioxidantinmilkproductsfermentedwithselectedkefirgrainmicroflora
AT noranizanmohdadzahan storagestabilityofantioxidantinmilkproductsfermentedwithselectedkefirgrainmicroflora