UTILIZATION OF WASTE TOMATO SEEDS AND SKINS. 



11 



quent salting and pressing, a soap of good texture with excellent 

 lathering qualities was produced. If combined with oils rich in 

 palmitin or stearin, satisfactory toilet soap doubtless could be pre- 

 pared. Owing to the present threatened shortage of oils for the 

 manufacture of soaps and glycerine the utilization of tomato-seed 

 oil as a soap stock asserts itself. 



Experiments to determine the drying properties of the oil showed 

 that 16 days were required to form a soft, sticky film. The nature 

 of the film as well as the time of drying could in all probability be 

 improved and hastened by the addition of siccatives or driers to the 

 oil. It appears, therefore, that the oil possesses a certain value as 

 a paint or varnish oil. 



The value of the oil in commerce would necessarily depend upon 

 the particular use to which it could be applied and to the demand 

 in general for fatty oils. From the results of the investigation, it 

 appears that it should prove a valuable addition to the edible or 

 condiment al oils now in use. Likewise it should find an important 

 place among the much-needed soap oils of commerce. 



TOMATO-SEED MEAL. 



UTILIZATION FOR STOCK FEEDING. 



The residue remaining after extracting the oil from the seeds 

 constitutes the meal. The utilization of this meal as stock feed is 

 suggested. In order to ascertain the approximate composition of 

 the meal, a careful analysis was made. The results are shown in 

 Table IV, together with analyses of some commercial stock feeds 

 as given by Henry and Morrison (7, p. 634-636). 



Table IV. — Composition of tomato-seed meal as compared with various commer- 

 cial stock feeds. 





Constituents (per cent). 



Feeding stuff. 



Moisture. 



Ash. 



Protein. 



Nitrogen- 

 free 

 extract. 



Fiber. 



Ether 

 extract. 





7.15 



7.8 

 10.0 



9.8 

 10.4 

 10.0 



9.6 



4.64 

 6.6 

 4.2 

 10.7 

 4.3 

 7.9 

 5.6 



37.0 



39.8 

 34.8 

 37.5 

 16.8 

 31.2 

 36.9 



29.10 



27.4 



21.8 



21.7 



35.0 



30.0 



36.3 



22.11 



10.1 



10.9 



6.3 

 24.0 

 11.3 



8.7 







8.3 





18.3 





14.0 





9.5 





9.6 





2.9 







In moisture and ash content, the tomato-seed meal compares favor- 

 ably with the other feed stuffs. In protein content, it ranks with sun- 

 flower seedcake, cottonseed meal, sesame-oil cake, rape seedcake, and 

 linseed meal, being considerably higher than palm-nut cake and some- 



