Detail publikace

Extraction of ferulic acid from wheat bran by alkaline hydrolysis

Originální název

Extraction of ferulic acid from wheat bran by alkaline hydrolysis

Anglický název

Extraction of ferulic acid from wheat bran by alkaline hydrolysis

Jazyk

en

Originální abstrakt

Wheat bran is a low-cost by-product of the milling industry. Traditionally, it is used as livestock feed, but nowadays intention of wheat flour industry is to find a new value-added applications for a wheat bran. Wheat is a good source of phenolic compounds, from which the ferulic acid is the most abundant one. Ferulic acid exhibits lots of beneficial effects so it is widely used in food, health and cosmetic industries. In this paper, the optimization of extraction process of ferulic acid from wheat bran is presented. Ferulic acid was extracted by alkaline-hydrolysis using NaOH and later purified by precipitating hemicelluloses and glucomannans with ethanol. To optimize the extraction process for laboratory conditions, three initial weights of wheat bran, four concentrations of NaOH and three hydrolysis temperatures were examined. Obtained extracts were analysed by HPLC and amount of ferulic and other phenolic acids were determined. It was found out that only initial weight of ferulic acid had statistically significant effect on ferulic acid yields, however effects of concentration of NaOH and hydrolysis temperature were not so statistically significant. Besides ferulic acid, other phenolic compounds were also found to be present in wheat bran extracts such as sinapic, caffeic and coumaric acid, but they were found only in minor amounts

Anglický abstrakt

Wheat bran is a low-cost by-product of the milling industry. Traditionally, it is used as livestock feed, but nowadays intention of wheat flour industry is to find a new value-added applications for a wheat bran. Wheat is a good source of phenolic compounds, from which the ferulic acid is the most abundant one. Ferulic acid exhibits lots of beneficial effects so it is widely used in food, health and cosmetic industries. In this paper, the optimization of extraction process of ferulic acid from wheat bran is presented. Ferulic acid was extracted by alkaline-hydrolysis using NaOH and later purified by precipitating hemicelluloses and glucomannans with ethanol. To optimize the extraction process for laboratory conditions, three initial weights of wheat bran, four concentrations of NaOH and three hydrolysis temperatures were examined. Obtained extracts were analysed by HPLC and amount of ferulic and other phenolic acids were determined. It was found out that only initial weight of ferulic acid had statistically significant effect on ferulic acid yields, however effects of concentration of NaOH and hydrolysis temperature were not so statistically significant. Besides ferulic acid, other phenolic compounds were also found to be present in wheat bran extracts such as sinapic, caffeic and coumaric acid, but they were found only in minor amounts

BibTex


@inproceedings{BUT145660,
  author="Elena {Šťávová} and Jaromír {Pořízka} and Václav {Štursa} and Vojtěch {Enev} and Pavel {Diviš}",
  title="Extraction of ferulic acid from wheat bran by alkaline hydrolysis",
  annote="Wheat bran is a low-cost by-product of the milling industry. Traditionally, it is used
as livestock feed, but nowadays intention of wheat flour industry is to find a new value-added
applications for a wheat bran. Wheat is a good source of phenolic compounds, from which the ferulic
acid is the most abundant one. Ferulic acid exhibits lots of beneficial effects so it is widely used
in food, health and cosmetic industries. In this paper, the optimization of extraction process of ferulic
acid from wheat bran is presented. Ferulic acid was extracted by alkaline-hydrolysis using NaOH
and later purified by precipitating hemicelluloses and glucomannans with ethanol. To optimize
the extraction process for laboratory conditions, three initial weights of wheat bran, four
concentrations of NaOH and three hydrolysis temperatures were examined. Obtained extracts were
analysed by HPLC and amount of ferulic and other phenolic acids were determined. It was found out
that only initial weight of ferulic acid had statistically significant effect on ferulic acid yields, however
effects of concentration of NaOH and hydrolysis temperature were not so statistically significant.
Besides ferulic acid, other phenolic compounds were also found to be present in wheat bran extracts
such as sinapic, caffeic and coumaric acid, but they were found only in minor amounts",
  booktitle="PROCEEDINGS OF 24TH INTERNATIONAL PHD STUDENTS CONFERENCE (MENDELNET 2017)",
  chapter="145660",
  howpublished="online",
  year="2017",
  month="december",
  pages="574--579",
  type="conference paper"
}