Gossypol content analysis in Iranian whole cotton seeds and their meal

The aim of this study was to measurement the amount of the free and total gossypol content in most important Iranian cotton seed cultivars (Varamin, Sahel, Bakhtegan and meher and in limit area native cultivar) and their meals. Methods: the amount of free and total gossypol content in most important Iranian cotton seed cultivars (Varamin, Sahel, Bakhtegan and meher and in limit area native cultivar) and their meals were determined by the Official Methods of AOCS (AOCS, 1985 a, b). Results and conclusion: The highest amount of free (1.2% ± 0.029) and total gossypol (1.27% ± 0.085) were recorded in the seed of Sahel cultivar and the highest free (0.06% ± 0.025) and total gossypol (0.62% ± 0.042) was recorded in its meal (CSM) too. The free and total gossypol content in the seed of Varamin cultivar was recorded 1.1 ± 0.024 and 1.14% ± 0.023 and in its meal 0.033% ± 0.013 and 0.54% ± 0.127 respectively and in Bakhtegan cultivar free and total gossypol content were 1.1%±0.006 and 1.08%±0.005 in the cotton seed meat and 0.06% ± 0.02 and 0.6% ± 0.16 in its meal respectively. The lowest free (0.53% ± 0.103) and total gossypol (0.58% ± 0.142) was recorded in the meat of native cotton cultivar.