Skip to main content
SpringerLink
Log in

Processing of cottonseed

1. Pigment distribution in oils and meals produced by hydraulic and screw press methods

  • Published:
Journal of the American Oil Chemists Society

Summary

  1. 1.

    The pigmentation of cooked cottonseed has been shown to depend principally upon the moisture content and period of heating of the seed.

  2. 2.

    Several samples of crude hydraulic-pressed and screw-pressed oils produced under known processing conditions were found to differ markedly from each other with respect to their original colors and refining characteristics.

  3. 3.

    The screw-pressed crude oils were more deeply colored and contained one principal pigment, whereas the hydraulic-pressed oils contained two principal pigments.

  4. 4.

    The absence of significant amounts of gossypol in the crude oils has been demonstrated by means of a new technic for the quantitative isolation of gossypol.

  5. 5.

    The crude oil pigments differed from gossypol, but like gossypol, they were removed during alkali refining.

  6. 6.

    The pigmentation of the crude oils has been shown to depend principally upon the pigmentation of the original seed and the moisture content of the seed during cooking.

  7. 7.

    On the basis of their absorption spectra it has been deduced that the alkali-refined hydraulic-pressed oils contain two to three pigments originally present in the crude oils whereas the alkali-refined serewpressed oils contain these same pigments as well as a large number of decomposition products of the principal crude oil pigment.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. Carruth, F. E., J. Biol. Chem.,32, 87–90 (1917).

    CAS  Google Scholar 

  2. Clark, E. P., J. Biol. Chem.,76, 229–235 (1928).

    CAS  Google Scholar 

  3. Gallup, W. D., Ind. Eng. Chem.,19, 726–728 (1927).

    Article  CAS  Google Scholar 

  4. Gallup, W. D., Ind. Eng. Chem.,20, 59–63 (1928).

    Article  CAS  Google Scholar 

  5. Royce, H. D., and Lindsay, F. A., Jr., Ind. Eng. Chem.,25, 1047–1050 (1933).

    Article  CAS  Google Scholar 

  6. Owen, G. W., Oil and Soap,14, 149–151 (1937).

    Article  CAS  Google Scholar 

  7. Boatner, C. H., Caravella, M., and Samuels, C. S., J. Am. Chem. Soc.,66, 838 (1944).

    Article  CAS  Google Scholar 

  8. Boatner, C. H., Oil and Soap,21, 10–15 (1944).

    Article  CAS  Google Scholar 

  9. Boatner, C. H., Samuels, C. S., Hall, C. M., and Curet, M. C., J. Am. Chem. Soc., (In press).

  10. Boatner, C. H., and Hall, C. M., Oil and Soap,23, 123–128 (1946).

    Article  CAS  Google Scholar 

  11. Boatner, C. H., Hall, C. M., Rollins, M. L., and Castillon, L. E., Bot. Gaz., (In press).

  12. Boatner, C. H., O'Conner, R. T., Samuels, C. S., and Caravella, M., J. Am. Chem. Soc., (In press).

  13. Official and Tentative Methods of the American Oil Chemists' Society, Revised to January 1, 1944.

  14. Boatner, C. H., Caravella, M., and Kyame, L., Ind. Eng. Chem., Anal. Ed.,16, 566–572 (1944).

    Article  CAS  Google Scholar 

  15. Smith, F. H., Ind. Eng. Chem., Anal. Ed.,18, 41–43 (1946).

    Article  CAS  Google Scholar 

  16. Podolskaya, M., and Tobler, L., Masloboina Zhirovoe Delo,16, 5–7 (1940); C. A.,35, 924 (1941).

    CAS  Google Scholar 

  17. Royce, H. D., Oil and Soap,10, 183–185 (1933).

    Article  CAS  Google Scholar 

  18. Markley, K. S., J. Am. Soc. Ag.,20, 1102–1107 (1928).

    CAS  Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Southern Regional Research Laboratory, New Orleans, Louisiana

    Charlotte H. Boatner, Catherine M. Hall, Robert T. O'Connor, Leah E. Castillon & Maizie C. Curet

Authors
  1. Charlotte H. Boatner
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Catherine M. Hall
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Robert T. O'Connor
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. Leah E. Castillon
    View author publications

    You can also search for this author in PubMed Google Scholar

  5. Maizie C. Curet
    View author publications

    You can also search for this author in PubMed Google Scholar

Additional information

Presented before the New Orleans Academy of Sciences, New Orleans, Louisiana, April 26, 1946; and the 37th annual meeting of the American Oil Chemists' Society, New Orleans, Louisiana, May 15, 1946.

One of the laboratories of the Bureau of Agricultural and Industrial Chemistry, Agricultural Research Administration, U. S. Department of Agriculture.

About this article

Cite this article

Boatner, C.H., Hall, C.M., O'Connor, R.T. et al. Processing of cottonseed. J Am Oil Chem Soc 24, 97–106 (1947). https://doi.org/10.1007/BF02643255

Download citation

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF02643255

Keywords

Search

Navigation