Bulletin of the Imperial Institute Volume 4 (Paperback)

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1906 Excerpt: ...value. 145 cubic centimetres of deci normal potash required to neutralise the volatile acid from 5 grams of oil. Acid value.. 52 to 78 cubic centimetres of deci normal potash required for 1 gram of oil. Titer test (solidifying point of the fatty acids).. 22 C. The following table shows the composition of the dry residual meal after extraction of the oil. No determinations of moisture in the meal were made as most of the water was taken out by the dry light petroleum used in extracting the oil from the ground kernels. Calculated on dry material. Per cent. Proteids 4151 f Reducing 1-32 Sugars j /-(Non-reducing (sucrose).. 250 Other carbohydrates.... 3692 Crude fibre 9 00 Ash 875 The ash contained 491 per cent. of phosphoric acid (expressed as P2Os) in the form of phosphates. The oil resembles, on the whole, cotton-seed oil, but has a lower "titer" number, which is an important constant from the point of view of the soap-maker. It would for this reason be unsafe to state that the oil from these " Inoy" kernels could be used as a substitute for cotton-seed oil, even if it could be produced as cheaply. In fact, there seems hardly any commercial application for an oil of this kind, unless it could compete in quality and price with ground-nut, olive or sesame-oils for edible use. In order to determine the suitability of the oil for edible purposes, it will be necessary to have a consignment of a few hundredweights of the kernels so that the oil could be expressed on a commercial scale, and specially examined from this point of view. If the oil thus obtained should prove to be of edible quality, the question of exporting the kernels from West Africa would be worth consideration. The meal compares favourably in composition with linseed an...