| Naslov: | Nanofiltration of the remaining whey after kefir grains’ cultivation |
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| Avtorji: | ID Simonič, Marjana (Avtor) |
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| Datoteke: |  Simonic_2022_Nanofiltration_of_the_Remaining_Whey.pdf (2,02 MB)
MD5: 582180416349AB701E71C533D4491E10
 https://doi.org/10.3390/membranes12100993
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| Jezik: | Angleški jezik |
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| Vrsta gradiva: | Znanstveno delo |
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| Tipologija: | 1.01 - Izvirni znanstveni članek |
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| Organizacija: | FKKT - Fakulteta za kemijo in kemijsko tehnologijo
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| Opis: | Acid whey is derived from fresh cheese. The proteins were isolated by a monolithic ion-exchange column. The remaining whey fraction was used as a starter culture substrate of kefir grains. The aim of this work was, firstly, to study the possibility of column replacement by a UF membrane. If we succeeded, the concentrate would be used as a starter culture substrate of kefir grains. The second part of the research was to purify the remaining solution. The idea was to separate this solution to the permeate and the concentrate by nanofiltration. Further application of both filtration streams was tested as aqueous solutions or dried matter. Chemical and microbiological analyses were performed of both the permeate and the concentrate. The permeate analyses showed that lactose had been fully removed. The aqueous permeate was not stable, mainly due to an increase of total bacteria from 103 to 106 CFU/mL. Therefore, the permeate was spray-dried. The dry permeate was added to the moisture solution in different concentrations. The results showed that up to 0.5% of the dry permeate could be added to the moisturizing solution, with negligible changes in properties having the ability to inhibit acne growth. Anaerobic digestion of industrial sludge was performed with the addition of an aqueous concentrate, which showed improvement in anaerobic fermentation. |
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| Ključne besede: | kefir grain cultivation, remaining whey, nanofiltration |
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| Status publikacije: | Objavljeno |
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| Verzija publikacije: | Objavljena publikacija |
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| Poslano v recenzijo: | 28.09.2022 |
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| Datum sprejetja članka: | 10.10.2022 |
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| Datum objave: | 13.10.2022 |
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| Založnik: | MDPI |
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| Leto izida: | 2022 |
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| Št. strani: | Str. 1-14 |
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| Številčenje: | Letn. 12, št. 10, št. članka 993 |
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| PID: | 20.500.12556/DKUM-91261  |
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| UDK: | 66 |
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| COBISS.SI-ID: | 126168579 |
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| DOI: | 10.3390/membranes12100993 |
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| ISSN pri članku: | 2077-0375 |
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| Avtorske pravice: | © 2022 by the author |
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| Datum objave v DKUM: | 05.12.2024 |
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| Število ogledov: | 234 |
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| Število prenosov: | 14 |
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| Metapodatki: |    |
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| Področja: | Ostalo
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