Metallreducerande förmåga hos Weissella sp.
(2026) YTHL05 20261Livsmedelsteknik (kandidat)
Food Technology and Nutrition (M.Sc.)
Food Science
- Abstract (Swedish)
- Förekomsten av metalljoner i miljö och livsmedel är en viktig fråga ur både miljö och livsmedelssäkerhetsperspektiv. Traditionella metoder för metallreduktion är ofta kemiska och kan vara resurskrävande, vilket skapar behov av mer hållbara biologiska alternativ. Mjölksyrabakterier, inklusive Weissella sp. har i tidigare studier visat potential att binda metalljoner genom biosorption.
Syftet med denna studie var att undersöka om Weissella sp. kunde reducera koncentrationen av koppar och aluminiumjoner vid olika koncentrationer och inkubationstider. Studien genomfördes som ett experimentellt in vitro försök där bakterietillväxt analyserades med OD600 och metallkoncentrationen bestämdes spektrofotometriskt efter centrifugering och... (More) - Förekomsten av metalljoner i miljö och livsmedel är en viktig fråga ur både miljö och livsmedelssäkerhetsperspektiv. Traditionella metoder för metallreduktion är ofta kemiska och kan vara resurskrävande, vilket skapar behov av mer hållbara biologiska alternativ. Mjölksyrabakterier, inklusive Weissella sp. har i tidigare studier visat potential att binda metalljoner genom biosorption.
Syftet med denna studie var att undersöka om Weissella sp. kunde reducera koncentrationen av koppar och aluminiumjoner vid olika koncentrationer och inkubationstider. Studien genomfördes som ett experimentellt in vitro försök där bakterietillväxt analyserades med OD600 och metallkoncentrationen bestämdes spektrofotometriskt efter centrifugering och separation av supernatant.
Resultaten visade att Weissella sp. kunde växa i närvaro av både koppar och aluminium. För koppar observerades statistisk signifikanta minskningar i koncentration efter 6 timmars inkubering, vilket tyder på en initial interaktion mellan bakterierna och kopparjonerna. Aluminiumresultaten var mer osäkra, då analysmetoden påverkades av pH förändringar som försvårade tolkningen.
Sammantaget indikerar resultaten att Weissella sp. har potential att interagera med metalljoner, särskilt koppar, men ytterligare studier med mer robust metodik krävs för att bekräfta resultaten och undersöka möjlig framtida användning inom biologisk metallreduktion. (Less) - Abstract
- Heavy metal contamination in the environment and food systems is an important issue from both environmental and food safety perspectives. Traditional methods for metal removal are often chemical based and may be resource intensive, creating a need for more sustainable biological alternatives. Lactic acid bacteria, including Weissella sp. have in previous studies demonstrated the potential to bind metal ions through biosorption.
The aim of this study was to investigate whether Weissella sp. could reduce the concentration of copper and aluminum ions at different concentrations and incubation times. The study was conducted as an experimental in vitro investigation, where bacterial growth was monitored using OD600 measurements and metal... (More) - Heavy metal contamination in the environment and food systems is an important issue from both environmental and food safety perspectives. Traditional methods for metal removal are often chemical based and may be resource intensive, creating a need for more sustainable biological alternatives. Lactic acid bacteria, including Weissella sp. have in previous studies demonstrated the potential to bind metal ions through biosorption.
The aim of this study was to investigate whether Weissella sp. could reduce the concentration of copper and aluminum ions at different concentrations and incubation times. The study was conducted as an experimental in vitro investigation, where bacterial growth was monitored using OD600 measurements and metal concentrations were determined spectrophotometrically after centrifugation and separation of the supernatant.
The results showed that Weissella sp. Was able to grow in the presence of both copper and aluminum. For copper, statistically significant reductions in concentration were observed after 6 hours of incubation, suggesting an initial interaction between the bacteria and copper ions. The aluminium results were less reliable, as the analytical method was strongly affected by pH changes, which complicated interpretation of the results.
Overall, the findings indicate that Weissella sp. may have the potential to interact with metal ions, particularly copper, but further studies with more robust and standardized methodology are required to confirm these findings and evaluate possible future applications in biological metal remediation. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/student-papers/record/9237488
- author
- Jones, Michael LU and Bengtsson, Jesper Elemer LU
- supervisor
-
- Olena Prykhodko LU
- Ia Rosenlind LU
- organization
- course
- YTHL05 20261
- year
- 2026
- type
- M2 - Bachelor Degree
- subject
- keywords
- Weissella, koppar, aluminium, tungmetall, livsmedelsteknik
- language
- Swedish
- id
- 9237488
- date added to LUP
- 2026-06-16 13:54:51
- date last changed
- 2026-06-16 13:54:51
@misc{9237488,
abstract = {{Heavy metal contamination in the environment and food systems is an important issue from both environmental and food safety perspectives. Traditional methods for metal removal are often chemical based and may be resource intensive, creating a need for more sustainable biological alternatives. Lactic acid bacteria, including Weissella sp. have in previous studies demonstrated the potential to bind metal ions through biosorption.
The aim of this study was to investigate whether Weissella sp. could reduce the concentration of copper and aluminum ions at different concentrations and incubation times. The study was conducted as an experimental in vitro investigation, where bacterial growth was monitored using OD600 measurements and metal concentrations were determined spectrophotometrically after centrifugation and separation of the supernatant.
The results showed that Weissella sp. Was able to grow in the presence of both copper and aluminum. For copper, statistically significant reductions in concentration were observed after 6 hours of incubation, suggesting an initial interaction between the bacteria and copper ions. The aluminium results were less reliable, as the analytical method was strongly affected by pH changes, which complicated interpretation of the results.
Overall, the findings indicate that Weissella sp. may have the potential to interact with metal ions, particularly copper, but further studies with more robust and standardized methodology are required to confirm these findings and evaluate possible future applications in biological metal remediation.}},
author = {{Jones, Michael and Bengtsson, Jesper Elemer}},
language = {{swe}},
note = {{Student Paper}},
title = {{Metallreducerande förmåga hos Weissella sp.}},
year = {{2026}},
}