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Spectrophotometric determination of total gossypol in cottonseeds and cottonseed meals

, : Spectrophotometric determination of total gossypol in cottonseeds and cottonseed meals. Analytical Chemistry 56(1): 30-32

A new spectrophotometric method for the determination of total gossypol content in cottonseeds and cottonseed meals was developed. The method was based on the reaction of gossypol with 3-amino-1-propanol an its subsequent complexation with Fe(III). The green colored Fe(III)-bis-(aminopropanol)-gossypol complex had a characteristic absorption maximum at 620 nm. The colored system obeyed Beer's law in the concentration range of 4-80 ppm gossypol. The effects of several experimental variables on the determination of gossypol were studied and the stolchlometric composition of the complex was determined. The new method was simple, rapid and precise and yielded results comparable with the standard AOCS [American Oil Chemists' Society] method. The method was applied for the determination of total gossypol in several cottonseed and cottonseed meal samples.

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Accession: 006460595

PMID: 6546479

DOI: 10.1021/ac00265a010

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Ellery W.N.; Ellery K.; Rogers K.H.; Mccarthy T.S.; Walker B.H., 1990: Vegetation of channels of the northeastern okavango delta botswana. Plant assemblages rooted within channels, as well as in peat deposits flanking channels, in the northeastern Okavango Delta have been classified and their distribution related to environmental conditions. Within-channel assemblages appeared to be...

NIELSON.M.H.; WARREN.J.C., 1965: Tpnh Generation In The Human Ovary. The endogenous activities of 4 major supernatant enzymes which produce TPNH (glucose-6-phosphate dehydrogenase, 6-phosphogluconate dehydro-genase, malate dehydrogenase and isocitrate dehydrogenase) were quantitated in both normal and pathologic hu...

Gvozdanović, V.; Simunić, S.; Nutrizio, V.; Papa, J.; Marinsek-Cicin-Sain, V.; Crkvenac, Z.; Dogan, S.; Poljaković, Z., 1976: Computerized tomography of the cranium. Radovi Medicinskog Faculteta U Zagrebu 24(1-3): 93-106

Sato, C.R.O.; Reis, R.G. dos; Lima, U. de A., 2006: Use of pectinase in the clarification of must of fermented orange. This article describes the use of pectinase to test the clarification of a fermented orange juice; the enzyme contributed to a reduction in the time of clarification and an increase in the sedimentation of the colloidal constituents of the ferment...

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MOORE.R.D.; REAGAN.J.W., 1953: A cellular study of lymph-node imprints. This study of the morphology of normal and abnormal cells encountered in lymph node imprints was made in order to determine whether cancer cells could be identified and distinguished from those derived from primary hyperplastic or neoplastic proce...

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