Extraction à l'éthanol de l'huile, du gossypol et de l'aflatoxine

  • Extraction d’huile de gossypol et d’aflatoxine à l’éthanol de Madagascar
  • Extraction d’huile de gossypol et d’aflatoxine à l’éthanol de Madagascar
  • Extraction d’huile de gossypol et d’aflatoxine à l’éthanol de Madagascar

Extraction à l'éthanol de l'huile, du gossypol et de l'aflatoxine

Extraction à l'éthanol de l'huile, du gossypol et de l'aflatoxine

Extraction de graines de coton avec un nouveau système de solvants : isohexane et alcool

Extraction par lots de gossypol à partir de farine de graines de coton à l'aide d'un solvant mixte

  • Does ethanol remove gossypol?
  • Extractions conducted without acid were ineffective at removing gossypol, which differs somewhat from the prior report by Saxena et al. (2012) that noted a 60% gossypol reduction by extraction with ethanol.
  • How do you extract gossypol?
  • Damaty and Hudson (1975) proposed a multi-step extraction process, first extracting the oil with hexane, then rupturing the pigment glands by the addition of aqueous acetone, followed by gossypol extraction with anhydrous acetone. Meal total gossypol levels of 1 g/kg were reported by this method.
  • Can gossypol be extracted from cottonseed meal?
  • To test for the possibility of extracting gossypol from cottonseed meal, commercial meal was extracted with solvent, water, and acid. The solvents used were acetone and ethanol, both GRAS (generally considered as safe) for use in food processing and capable of dissolving gossypol.
  • How much hexane does gossypol produce?
  • This process produced meal fractions with between 0.3 and 4 g/kg of total gossypol, compared with 14.8 g/kg obtained by a more traditional hexane extraction.
  • How does gossypol extraction differ from acetone extraction?
  • Gossypol extraction occurred much faster in the ethanol-based extractions than it did in the acetone-based extractions. Treated meals tended to retain phosphorus but most of this could be removed by conducting a final water wash. Water washing also removed hydrophilic components resulting in reduced product yields but increased protein levels.
  • Which solvent is used to catalyze the hydrolysis of protein-bound gossypol?
  • Phosphoric acid and water were included in the solutions to catalyze the hydrolysis of protein-bound gossypol. Both solvents were effective at reducing the total gossypol level in meal to between 5% and 10% of its initial value. Gossypol extraction occurred much faster in the ethanol-based extractions than it did in the acetone-based extractions.