SummaryPilot‐plant production of peanut protein from solvent‐extracted meal was investigated with respect to the effect of temperature of extract liquor during precipitation and the rate of addition of sulfur dioxide on the settling rate of the precipitated protein. As the rate of addition of sulfur dioxide was increased, and the temperature of the extract liquor was decreased the density and the settling rate of the protein curd increased. Spray washing of the extracted meal was more efficient than the previously reported dilution method of washing and resulted in a greater yield of protein.

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Summary Data are presented which show the effects of different solvents on the yield and properties of liquid wax fromSimondsia chinensis (jojoba) and on the characteristics of the hydrogenated waxes obtained from the liquid waxes. Three reagent grade solvents, carbon tetrachloride, benzene, and isopropyl alcohol, and three commercial grade solvents, heptane, hexane, and tetrachloroethylene, were evaluated as extractants for the liquid wax from jojoba. Soxhlet‐type of extractions were carried out under conditions in which the solvent was the only significant variable. Four of the solvents extracted essentially the same amount of material from the seed while isopropyl alcohol extracted significantly more material and tetrachloroethylene significantly less. Obviously the difficulties involved in separating the solids recovered from the isopropyl alcohol extraction preclude its use as the extracting solvent for jojoba wax. The density of the liquid waxes varies from 0.8631 to 0.8648; the waxes from the tetrachloroethylene and hexane extractions had the lowest value and the wax from isopropyl alcohol the highest. In each case, regardless of the solvent used, a precipitate developed in the liquid wax after it had been desolventized and stored for 7–10 days. Hydrogenation of clear fractions and precipitate containing fractions of these liquid waxes showed that the precipitate had no apparent effect upon the melting point or hardness of the resulting solid wax. Some of the liquid waxes required a longer hydrogenation time to attain an iodine value of about 1. At this iodine value all of the solid waxes had melting points between 66 and 68°C. Hardness values of all the solid waxes as measured by the Trionic hardness gauge were 90.

SummaryJojoba oil is a liquid wax composed essentially of C20 and C22 straight‐chain monoethylenic acids and alcohols in the form of esters. Sodium reduction of the wax fatty esters in jojoba oil yielded quantitatively a mixture of unsaturated, long‐chain alcohols from the acid moiety of the jojoba oil. Yields of about 91% were obtained in the laboratory‐scale experiments and 82 to 86 for the pilot‐plant experiments. Analytical data, including detailed infrared spectra information, are given for the resulting product alcohols.