Abstract: A composition comprising material suitable for promoting cell growth and its preparation from serum is described.

Abstract: An improved chromogenic substrate for .alpha.-amylase assays is synthesized by reacting amylose with Cibachron Blue F3GA, sodium sulfate and trisodium phosphate and incubating the resultant dyed amylose substrate with a buffer containing calcium chloride. The new substrate is more sensitive than commercially available chromogenic substrates in determining the .alpha.-amylase activity of the enzymes of sweet potato, tobacco, and human saliva.

Abstract: 7-Ethoxy-1-(p-ethylphenoxy)-3,7-dimethyl-2-octene is highly active in preventing normal maturation of the yellow mealworm and the confused flour beetle.

Abstract: Beef tallow is partitioned into five well defined fractions, each having its own distinctive fatty acid and glyceride composition and its own distinctive thermal characteristics, by a precise multi-step crystallization. Two of the five fractions are crystalline, one is a plastic solid and two are liquid. One of the liquid fractions accounts for 60% of the tallow and has a variety of uses in the formulation of salad oils, margarines and liquid and plastic shortenings. The composition and properties of the plastic solid fraction are very similar to those of cocoa butter and when it is mixed with cocoa butter it does not produce any significant change in thermal characteristics. In fact, an increment of one of the crystalline fractions or of one of the liquid fractions can be blended with an increment of the solid plastic fraction to make products that are compatible with cocoa butter and that have desirable thermal characteristics.

Abstract: A number of terpenoid compounds and their epoxides were synthesized and found to prevent insect maturation when applied to insects in an immature stage of growth.