Cellulase yields of 250 to 430 IU/g of cellulose were recorded in a new approach to solid-state fermentation of wheat straw with Trichoderma reesei QMY-1. This is an increase of ca. 72% compared with the yields (160 to 250 IU/g of cellulose) in liquid-state fermentation reported in the literature. High cellulase activity (16 to 17 IU/ml) per unit volume of enzyme broth and high yields of cellul...

Diabetes mellitus is a multifactorial disease. The nature has a plentiful sources as a remeady for this slow-killing condition. The aim of the present to assess the medicinal plants for anti-diabetic activity by using -amylase and -glucosidase inhibition assay. Anti-diabeticactivities of medicinal plants weredetermined by -amylase and -glucosidase inhibition assay. Results revealed that methono...

Y. GUEGUEN, P. CHEMARDIN, P. LABROT, A. ARNAUD AND P. GALZY. 1997. The lactic acid bacterium, Leuconostoc mesenteroides, when grown on an arbutin-containing medium, was found to produce an intracellular b-glucosidase. The enzyme was purified by chromatofocusing, ion-exchange chromatography and gel filtration. The molecular mass of the purified intracellular b-glucosidase, as estimated by gel fi...

application of chemical pesticides has increased significantly worldwide and has raised serious concerns about environmental pollutions. one of the encouraging trends to minimize pesticide risk is production of resistant plants containing toxic proteins against insect pests. considering the importance of purification and characterization of digestive enzymes in the production of resistant plant...

The H antigen of the dimorphic fungal pathogen Histoplasma capsulatum was first described over 40 years ago. It is a secreted glycoprotein that is immunogenic during infection. Recent cloning of the H antigen gene (HAG1) indicated sequence homology with genes for fungal beta-glucosidases. To understand the biological role of this immunodominant antigen in H. capsulatum, enzymatic assays were pe...

We performed a biochemical study on the patient with mucolipidosis III (ML-III, pseudo-Hurler polydystrophy) in Korea. Confluent fibroblasts from the patient and from normal controls were cultured for 4, 12, 24, 48, and 72 hr, respectively. Lysosomal enzyme activities in culture media after different incubation times and in plasma, leuko-cytes, and fibroblasts were determined. Most of the leuko...

1. A crude cellulase extract was prepared from the hepatopancreas of a marine mollusc, Dolabella sp., and partially purified by ammonium sulphate fractionation. 2. The optimum pH values of the partially purified preparation were 6.5 and 8.0 for Walseth cellulose and CM-cellulose respectively. It was most stable at pH6.0 and showed moderate thermostability. 3. The partially purified preparation ...

Gene duplications are believed to facilitate evolutionary innovation. However, the mechanisms shaping the fate of duplicated genes remain heavily debated because the molecular processes and evolutionary forces involved are difficult to reconstruct. Here, we study a large family of fungal glucosidase genes that underwent several duplication events. We reconstruct all key ancestral enzymes and sh...

The dried rhizome of Belamcanda chinensis is an important Chinese traditional medicine used for the treatment of inflammation and many other disorders. Previously, we reported the hypoand antihyper-glycemic effects of the aqueous leaf extract of B. chinensis (BCL) and identified the isoflavones as its principal active fraction. In the present study, the α-glucosidase inhibitory effect of BCL an...