Abstract: An oil and fat composition for food processing machines comprises polyglycerides of medium chain saturated fatty acids and/or mixed polyglycerides of medium chain saturated fatty acids and long chain saturated fatty acids and, optionally, triglycerides of medium chain saturated fatty acids. The composition is safe for food sanitation, has excellent oxidation stability and lubricating property and a suitable degree of viscosity and cloud point as well as a high viscosity and a low temperature fluidity which cannot be attained by MCT and is favorably utilized as lubricating oil for food processing machines and tools and agricultural machines and tools.

Abstract: A method for preserving the degree of freshness of poultry shell eggs is disclosed which comprises spraying the surface of a shell egg with an effective amount of a composition comprising a triglyceride of saturated fatty acids (I) of the following general formula: ##STR1## wherein: R.sup.1, R.sup.2 and R.sup.3 are the same or different, linear aliphatic hydrocarbon groups containing from 5 to 21 carbon atoms, and as an essential ingredient, a fatty acid (II) containing from 12 to 20 carbon atoms in an amount of from 0.01 to 0.5% by weight on the basis of the total weight of the composition.

Abstract: A composition for the freshness-preservation of foodstuffs is disclosed which comprises, as an active base a triglyceride of saturated fatty acids (I) corresponding to the following general formula: ##STR1## wherein: R.sup.1, R.sup.2 and R.sup.3 are the same or different, linear aliphatic hydrocarbon groups containing from 5 to 21 carbon atoms.

Abstract: Lubricating oil compositions favorably used for food processing machines are disclosed. The oil compositions exhibit highly improved oxidation stability, wear resistance and rust prevention. Raw materials quite harmless to human bodies can be used in the production of said lubricating oil composition which comprises (I) as the base oil, a saturated fatty acid glyceride represented by the following general formula ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 are each a straight-chain alkyl group and (II) as an essential component, a fatty acid in an amount of 0.001 to 5% by weight, based on the total composition.

Abstract: A lubricating oil composition for chains which comprises(A) as the base oil, a polyol ester represented by the general formula ##STR1## wherein R.sub.1 is an alkyl group having 1 to 4 carbon atoms, R.sub.2 to R.sub.4 are each an alkyl group having 2 to 17 carbon atoms, a and b are each an integer of 0 to 2 with the proviso that the total of a and b is 2, and n is an integer of 1 to 4, and(B) as an additive, a graphite fluoride represented by the experimental formulaCF.sub.xwherein x is a number of 0.5 to 1.2, in a specified amount of 0.5 to 30% by weight of the composition.