The action of invertase preparations.

In vitro carbohydrate stress: salicylic acid increases soluble invertase activity in Pistacia vera L. in vitro plantlets. Françoise Bernard *, Majid Baghai and Shirin Hadad Kaveh

The action of salicylic acid (SA) has been well investigated in plant resistance against pathogen attacks but its role may be extended to a more global anti-stress plant cell strategy. The expression of defense-related functions may be also enhanced by elevated hexose levels. To verify if there exists a relation between these two defense programs, SA effect on soluble acid invertase (EC 3.2.1.2...

T H E Influence of Proteins on T H E Reactivation of Yeast Invertase by Harry Wagreich, Lawrence I. Schwartz, and Henry Kamin

Saul and Nelson (1) studied the influence of proteins on the activity of yeast invertase, and found that native and denatured proteins accelerate the activity of purified invertase preparations at pH 3, but not at pH 4.5, the pH optimum of the enzyme. Herriott (2) had shown that yeast invertase inactivated by acid can be reactivated by following Anson and Mirsky's (3) procedure of allowing a so...

Action de diverses preparations denommees (vitamin b1) sur les cultures de Leishmania tropica

Hydrolysis of Galacto-oligosaccharides in Soy Molasses by α-galactosidases and Invertase from Aspergillus terreus

Two α-galactosidase (P1 and P2) and one invertase present in the culture of Aspergillus terreus grown on wheat straw for 168 h at 28°C were partially purified by gel filtration and hydrophobic interaction chromatographies. Optimum pH and temperatures for P1, P2 and invertase preparations were 4.5-5.0, 5.5 and 4.0 and 60, 55 and 65°C, respectively. The KM app for ρ-nitrophenyl-α-D-galactopyranos...

Preparation of Highly Active Yeast Invertase*

In some preliminary experiments it was found that certain yeast invertase preparations which had been variously purified by adsorption to kaolin and alumina in accordance with the Willstiitter procedures (1) were soluble in saturated aqueous solutions of ammoniym sulfate. This solubility of the enzyme is interesting for two reasons. In the first place, saturated aqueous solution of ammonium sul...