Total Gossypol Content and Properties of Cottonseed Oil as Affected by Borax Treatment Before and After Oil Storage
✍ Scribed by Gad, T. E. ;El-Zalaki, E. M.
- Publisher
- John Wiley and Sons
- Year
- 1980
- Weight
- 473 KB
- Volume
- 82
- Category
- Article
- ISSN
- 0931-5985
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✦ Synopsis
Abstract
Crude cotton seed oil obtained by hydraulic press in two Egyptian factories was used. The oil was treated with different concentrations of borax before and after oil storage. Treatment with borax decreased the total gossypol content of the oil by 94.6–99.3% whether the borax treatment was carried out before or after crude oil storage. Crude oil storage prior to borax treatment resulted in oil of dark colour, hard to bleach, even after borax treatment as the borax treated bleached oil had a colour of 9.5–24 red units. While borax treatment prior to oil storage resulted in oil of light colour of 3.7–4.8 and 3.0–4.0 red units before and after storage of the borax treated oil, respectively. Borax treatments had no undesirable effect on the viscosity, refractive index, surface tension, free fatty acids, saponification value, and iodine value of the oil.