Pulsed electric field treatment of wheat bran to improve arabinoxylan extraction
Valorization of agricultural and industrial by-products reduces the environmental impact of food production. Innovative low impact processes for food processing further limit the contribution and additionally enhances the generation of novel health-promoting foods. Wheat bran (WB) is an industrial b...
| Autor principal: | |
|---|---|
| Formato: | Second cycle, A2E |
| Lenguaje: | sueco Inglés |
| Publicado: |
2021
|
| Materias: | |
| Acceso en línea: | https://stud.epsilon.slu.se/16898/ |
| _version_ | 1855572813087244288 |
|---|---|
| author | Wahlsten, Agnes |
| author_browse | Wahlsten, Agnes |
| author_facet | Wahlsten, Agnes |
| author_sort | Wahlsten, Agnes |
| collection | Epsilon Archive for Student Projects |
| description | Valorization of agricultural and industrial by-products reduces the environmental impact of food production. Innovative low impact processes for food processing further limit the contribution and additionally enhances the generation of novel health-promoting foods. Wheat bran (WB) is an industrial by-product produced during milling which currently have limited use for food applications, despite its exceptional nutritional content. Arabinoxylan is the main non-starch polysaccharide in WB and can be used to improve the quality and physiochemical properties of foods as well as improve the nutritional value.
The aim of this study was to determine if PEF enhances the extraction yield of extracted arabinoxylan and modulates the chemical composition of arabinoxylan extracts.
It was hypothesized that pulsed electric field technology (PEF) can aid extraction of arabinoxylans (AX) from WB. WB was treated with highest possible field strenght (3,7 kV/cm), a frequency of 2Hz, pulse width of 5 μ s and either 100, 250, 500. 750 or 1000 pulses.
PEF had a significant effect on total carbohydrate content of AX extracts (p<0,05). There was an increase in carbohydrate content for AX extracts treated with 250, 500 and 1000 pulses. PEF additionally decreased the A/X ratio. PEF treated AX extracts had ratios between 0,92-0,84.
The result confirms that PEF increases the purity and changes the chemical composition of alkaline extracted AX. PEF treatments with 1000 pulses is most effective in increasing purity. Further studies should examine the effect of different PEF parameters on extraction yield and physiochemical properties of AX extracts. |
| format | Second cycle, A2E |
| id | RepoSLU16898 |
| institution | Swedish University of Agricultural Sciences |
| language | Swedish Inglés |
| publishDate | 2021 |
| publishDateSort | 2021 |
| record_format | eprints |
| spelling | RepoSLU168982021-07-02T12:13:16Z https://stud.epsilon.slu.se/16898/ Pulsed electric field treatment of wheat bran to improve arabinoxylan extraction Wahlsten, Agnes Food science and technology Valorization of agricultural and industrial by-products reduces the environmental impact of food production. Innovative low impact processes for food processing further limit the contribution and additionally enhances the generation of novel health-promoting foods. Wheat bran (WB) is an industrial by-product produced during milling which currently have limited use for food applications, despite its exceptional nutritional content. Arabinoxylan is the main non-starch polysaccharide in WB and can be used to improve the quality and physiochemical properties of foods as well as improve the nutritional value. The aim of this study was to determine if PEF enhances the extraction yield of extracted arabinoxylan and modulates the chemical composition of arabinoxylan extracts. It was hypothesized that pulsed electric field technology (PEF) can aid extraction of arabinoxylans (AX) from WB. WB was treated with highest possible field strenght (3,7 kV/cm), a frequency of 2Hz, pulse width of 5 μ s and either 100, 250, 500. 750 or 1000 pulses. PEF had a significant effect on total carbohydrate content of AX extracts (p<0,05). There was an increase in carbohydrate content for AX extracts treated with 250, 500 and 1000 pulses. PEF additionally decreased the A/X ratio. PEF treated AX extracts had ratios between 0,92-0,84. The result confirms that PEF increases the purity and changes the chemical composition of alkaline extracted AX. PEF treatments with 1000 pulses is most effective in increasing purity. Further studies should examine the effect of different PEF parameters on extraction yield and physiochemical properties of AX extracts. Valorisering av jordbruks- och industribiprodukter kan medverka till en minskning av livsmedelsproduktionens miljöpåverkan. Resurseffektiva innovativa processer för bearbetning av livsmedel minskar ytterligare miljöpåverkan samt förbättrar tillika genereringen av nya hälsofrämjande livsmedel. Vetekli är en industriell biprodukt vid vetemjölsproduktion, som för närvarande används begränsat i livsmedel, trots dess exceptionella näringsinnehåll. Arabinoxylan är den dominerande icke-stärkelsepolysackariden i vetekli och kan användas för att förbättra livsmedlens kvalitet och fysiokemiska egenskaper samt förbättra näringsvärdet. Det antogs att pulserad elektrisk fältteknik (PEF) kan underlätta utvinningen av arabinoxylaner (AX) från vetekli. Vetekli behandlades med högsta möjliga fältstyrka (3,7 kV / cm), en frekvens på 2Hz, en pulsbredd på 5 µ s och antingen 100, 250, 500. 750 eller 1000 pulser. PEF hade en signifikant effekt på det totala kolhydratinnehållet i AX-extrakt (p <0,05). Det förekom en ökning av kolhydratinnehåll i AX-extrakt behandlade med 250, 500 och 1000 pulser. PEF minskade dessutom A/X-ratiot. PEF-behandlade AX-extrakt hade ration mellan 0,92-0,84. Resultatet bekräftar att PEF ökar renheten samt förändrar den kemiska sammansättningen av alkaliskt extraherat AX. PEF-behandlingar med 1000 pulser var mest effektivt för att öka renheten. Ytterligare studier bör utföras för att undersöka effekten av olika PEF-parametrar på extraktionsutbyte och fysiokemiska egenskaper hos AX-extrakt. 2021-06-24 Second cycle, A2E NonPeerReviewed application/pdf sv https://stud.epsilon.slu.se/16898/3/wahlsten_a_210701.pdf Wahlsten, Agnes, 2021. Pulsed electric field treatment of wheat bran to improve arabinoxylan extraction. Second cycle, A2E. Uppsala: (NL, NJ) > Department of Molecular Sciences <https://stud.epsilon.slu.se/view/divisions/OID-425.html> urn:nbn:se:slu:epsilon-s-16898 eng |
| spellingShingle | Food science and technology Wahlsten, Agnes Pulsed electric field treatment of wheat bran to improve arabinoxylan extraction |
| title | Pulsed electric field treatment of wheat bran to improve arabinoxylan extraction |
| title_full | Pulsed electric field treatment of wheat bran to improve arabinoxylan extraction |
| title_fullStr | Pulsed electric field treatment of wheat bran to improve arabinoxylan extraction |
| title_full_unstemmed | Pulsed electric field treatment of wheat bran to improve arabinoxylan extraction |
| title_short | Pulsed electric field treatment of wheat bran to improve arabinoxylan extraction |
| title_sort | pulsed electric field treatment of wheat bran to improve arabinoxylan extraction |
| topic | Food science and technology |
| url | https://stud.epsilon.slu.se/16898/ https://stud.epsilon.slu.se/16898/ |