hydrolysis

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hydrolysis

 [hi-drol´ĭsis] (pl. hydrol´yses)
the cleavage of a compound by the addition of water, the hydroxyl group being incorporated in one fragment and the hydrogen atom in the other. adj., adj hydrolyt´ic.

hy·drol·y·sis

(hī-drol'i-sis),
A chemical process whereby a compound is cleaved into two or more simpler compounds with the uptake of the H and OH parts of a water molecule on either side of the chemical bond cleaved; hydrolysis is effected by the action of acids, alkalies, or enzymes. Compare: hydration.
Synonym(s): hydrolytic cleavage
[hydro- + G. lysis, dissolution]

hy·drol·y·sis

(hī-drol'i-sis)
A chemical process whereby a compound is cleaved into two or more simpler compounds with the uptake of the H and OH parts of a water molecule on either side of the chemical bond cleaved; hydrolysis is effected by the action of acids, alkalies, or enzymes.
Compare: hydration
[hydro- + G. lysis, dissolution]

hydrolysis

Splitting of a compound into two parts by the addition of water (H2O), the hydrogen atom (H) joining to one part and the hydroxyl group (OH) joining to the other. Hydrolysis is usually effected by a hydrolytic ENZYME.

hydrolysis

a chemical reaction in which large molecules are broken down by the addition of water. For example, fat to fatty acids and glycerol, MALTOSE to glucose, DIPEPTIDE to two amino acids. The reactions are usually enzymically activated. Compare CONDENSATION REACTION.

hy·drol·y·sis

(hī-drol'i-sis)
1. Process by which water slowly penetrates suture filaments and breaks down the suture's polymer chain; hydroxylation produces less tissue reaction.
2. Chemical process in which compound is cloven into two or more simpler compounds; effected by action of acids, alkalis, or enzymes.
[hydro- + G. lysis, dissolution]
References in periodicals archive ?
Caption: Figure 7: Timeline of hydrolysis reaction at [S] = 2 mg/mL (pH 7.0 and temperature 45[degrees]C).
Furthermore, the contribution of ultrasonic irradiation to the hydrolysis reaction became decreasing with increase of temperature, as the averaged rate constant among three methods was 5.64 [+ or -] 0.28 x [10.sup.4] [min.sup.-1] at 60[degrees]C.
Because catalytic activity of lipase is conducted on emulsion of oil and water, increasing the amount of buffer will have more links between oil and water which were formed as well as having more substrates for lipase to catalyze hydrolysis reaction, leading to the rise of hydrolysis degree.
Using lipase to hydrolyze VCO received the less changed FFAs because the hydrolysis reaction is conducted under milder condition of pH and temperature than acidic or alkaline hydrolysis.
At a moisture level slightly above this range there will be no splay or foaming of the purge--again, because the water is consumed in the hydrolysis reaction of breaking the chains.
For the purpose of this discussion, it is convenient to assume that the hydrolysis reaction initially occurs, followed by the condensation reactions.
With some polymers, water is produced as a byproduct of the hydrolysis reaction, and in these cases the degradation proceeds relatively rapidly.
The presence of high amount of calcium and sodium indicates that the deposit is not only made of FOG but also metallic soaps that formed during the hydrolysis reaction (6).
Results of the research showed that the rate of hydrolysis reaction in titania sol greatly affected the rate of deposition in electrophoresis sol-gel method.
In stober process, due to the hydrolysis process, the ethoxy groups are replaced by TEOS; the hydrolysis reaction initiates by the attachment of hydroxyl anions on TEOS molecules [6,7].
These ranges of pHs had been chosen due to their influences on hydrolysis reaction, condensation of silane with itself and with the particle, as well as to their effects on protonation of amino functional groups of silane molecules used.