hydrolysing

Most species of fungi produce a range of carbohydrate-hydrolysing enzymes

Chapter 7 1983

This may be attributed to increased activity of the starch-hydrolysing enzymes when the sugar concentration drops to a low level or to decreased growth rate of an organism that has probably reached the stationary phase while enzyme activity remains the same, leading to accumulation of the released sugar in the medium.

Chapter 7 1983

So far, however, attempts at explaining the constitution of the complex decomposition products obtained by hydrolysing high molecular tannoids have not been successful.

Synthetic Tannins Georg Grasser

_ -- The hydrolysing action of concentrated sulphuric acid upon oils and fats has been known since the latter part of the eighteenth century, but was not applied on a practical scale till 1840 when Gwynne patented a process in which sulphuric acid was used to liberate the fatty acids, the latter being subsequently purified by steam distillation.

The Handbook of Soap Manufacture H. A. Appleton

There exist in the mud of marshes, rivers and cloacae, &c., however, other anaerobic bacteria which decompose cellulose, probably hydrolysing it first and then splitting the products into carbon dioxide and marsh gas.

Encyclopaedia Britannica, 11th Edition, Volume 3, Part 1, Slice 2 "Baconthorpe" to "Bankruptcy" Various

Here, again, E. Fischer and Freudenberg [Footnote: _Ibid. _] were able to conclusively prove that on hydrolysing tannin with dilute acids,

Synthetic Tannins Georg Grasser

Acid of 60 per cent. or less appears to be practically useless as a hydrolysing agent, while with 70 per cent. acid only 47.7 per cent. fatty acids were developed after twenty-two hours 'steaming, and with 80 and 85 per cent. acid, the maximum of 89.9 per cent. of fatty acids was only reached after fourteen and fifteen hours' steaming respectively.

The Handbook of Soap Manufacture H. A. Appleton

Early attempts at _hydrolysing tannin_ gave varying results, some investigators claiming the presence, and others the absence of sugars.

Synthetic Tannins Georg Grasser

_ -- The hydrolysing power of enzymes throws a good deal of light on the development of rancidity in oils and fats, which is now generally regarded as due to the oxidation by air in the presence of light and moisture of the free fatty acids contained by the oil or fat.

The Handbook of Soap Manufacture H. A. Appleton

Bé. solutions were completely gelatinised; this may be accounted for by assuming that the surface was "dead" tanned, and that hence the free dissociated sulphonic acid diffused into the leather, towards which it exhibited hydrolysing rather than a tannoid effect with the consequent result described above.

Synthetic Tannins Georg Grasser