saponification


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Related to saponification: Saponification value

saponification

 [sah-pon″ĭ-fĭ-ka´shun]
conversion of an oil or fat into a soap by combination with an alkali. In chemistry, the term now denotes the hydrolysis of an ester by an alkali, resulting in the production of a free alcohol and an alkali salt of the ester acid.

sa·pon·i·fi·ca·tion

(să-pon'i-fi-kā'shŭn),
Conversion into soap, denoting the hydrolytic action of an alkali on fat, especially on triacylglycerols; in histochemistry, saponification is used to demethylate or reverse blockage of carboxylic acid groups, thus permitting basophilia to occur.
[sapo- (sapon-) + L. facio, to make]

saponification

/sa·pon·i·fi·ca·tion/ (sah-pon″ĭ-fĭ-ka´shun) conversion of an oil or fat into a soap by combination with an alkali. In chemistry, the term now denotes hydrolysis of an ester by an alkali, producing a free alcohol and an alkali salt of the ester acid.

saponification

[sapon′ifikā′shən]
Etymology: L, sapo, soap, facere, to make
the production of soap.

sa·pon·i·fi·ca·tion

(să-pon'i-fi-kā'shŭn)
Conversion into soap, denoting the hydrolytic action of an alkali on fat, especially on triacylglycerols.
[L. sapo- (sapon-), soap + L. facio, to make]

saponification

Hydrolysis of a fat by an alkali to form a soap and an alcohol, usually glycerol.

sa·pon·i·fi·ca·tion

(să-pon'i-fi-kā'shŭn)
Conversion into soap.
[L. sapo- (sapon-), soap + L. facio, to make]

saponification,

n the production of soap.

saponification

conversion of an oil or fat into a soap by combination with an alkali. In chemistry, the term now denotes the hydrolysis of an ester by an alkali, resulting in the production of a free alcohol and an alkali salt of the ester acid.
References in periodicals archive ?
The PEs were analyzed for hydroxyl value and saponification number using ASTM D 2849 (acetic anhydride --pyridine) and ASTM D5558-95 respectively.
A solution was formed, which on cooling becomes viscous, indicating positive saponification test for fixed oils.
The samples were categorized in categories on the basis of properties which include moisture content, free fatty acid amount, kinematic viscosity and saponification value.
These bacteria produce lipases, enzymes which break down meibum lipids--a saponification process--giving rise to foamy tears, and for some, a stinging sensation.
The hydroxyl number was determined according to DIN 53 240-2 and the saponification number according to DIN EN ISO 3681.
The histopathologic hallmark is the presence of "ghost cells," referring to necrotic adipocytes turned into an amorphous to granular blue-gray substance in the process of saponification (enzymatic hydrolysis of triglycerides) and dystrophic calcification (Figure 2).
Saponification and hydroxyl indexes were determined under the NF ISO 3657 and NF T60-213 regulations respectively.
808) indicates that the oil has a low quantity of free fatty acid, so it can be assumed that the oil, in a great percentage, is found in a triglyceride state and this is demonstrated with the value of the saponification or esterification rate (312.
The researchers concluded that the FOG deposition was mainly due to the saponification reaction that produces calcium soaps.
This is achieved by using only food grade oils, by refraining from using any additives or preservatives, and by leaving the naturally occurring glycerin from the saponification process in the final product.
05 [micro]m < d < 5 [micro]m containing an ethylene vinyl alcohol copolymer having an ethylene composition ratio of 20 to 50 mol % and a degree of saponification of 90% or more and at least one diene-based rubber composition layer containing 1 to 25 parts by weight of a silane-based coupling agent having a functional group reactive with rubber and having an aikoxysilyl group, based upon 100 parts by weight of the diene-based rubber and a pneumatic tire using the same as an inner liner.