Yoghurt strain Lactobacillus LBL-4 cultivated for 8-10 h at pH ~6.0 was investigated as a considerable food-grade source of intracellular aminopeptidase. Cell-free extract manifesting >200 AP U/l was obtained from cells harvested from 1 L culture media. Subtilisin-induced hydrolysates of casein, soybean isolate, and Scenedesmus cell protein with degree of hydrolysis 20-22% incubated at 45°C for...

currently, white fish or kutum rutilus frisii is considered to be a good candidate for commercial aquaculture. however, little information is available regarding the nutritional requirement of this fish fry. experiments were conducted to examine the effects daphnia magna as live food cultured on two freshwater green algae, chlorella sp. and scenedesmus obliquus enriched with different b group v...

A . Kah, D . Dörnemann, and H . Senger Fachbereich Biologie/Botanik der Philipps-Universität Marburg, Lahnberge, D-3550 Marburg/L. , Bundesrepublik Deutschland Z . Naturforsch. 43c , 563-571 (1988); received March 3/Apr i l 12, 1988 C-5-Pathway, 4,5-Dioxovalerate, 5-Aminolevul inic Ac id , 4,5-Dioxovalerate Aminotransferase, Scenedesmus In the present paper the purif ication of a specific 4,5-d...

This work compared the sensitivity of three cyanobacteria (Anabaena flos-aquae, Microcystis flosaquae and Mirocystis aeruginosa) as well as five green algae (Pseudokirchneriella subcapitata, Scenedesmus quadricauda, Scenedesmus obliquus, Chlorella vulgaris and Chlorella pyrenoidosa) to four pesticides through 96h short-term chronic tests. The results showed that the toxicity of the pesticides t...

The cells of the green unicellular alga Scenedesmus incrassatulus Böhl, strain R-83 released organic chelators for Fe(III) in inorganic nutrient medium both in iron-deficient and in iron-replete conditions. Iron-deficient cells released chelators capable to bind 11nmol Fe. mg (cell DW)–1.h–1, while the chelators released from iron-sufficient cells after contact with Fe(III) were sufficient to b...

Current methods to remove algae from a liquid medium are energy intensive and expensive. This study characterized algae contained within a wastewater oxidation pond and sought to identify a more efficient harvesting technique. Analysis of oxidation pond wastewater revealed that algae, consisting primarily of Chlorella and Scenedesmus, composed approximately 80% of the solids inventory during th...

Nano ZnO is currently used in the rubber, electronics, electrical appliances, enamel, cosmeticsand medical industry. Whereas most studies have used the ecological toxicity of nanoparticles, the toxic effects of nanoparticles in diet is not extensively explored. Because the algaeare at the base of the food chain, any change in their density, biomass and population, wouldaffect the food chain in ...

1 Centre for Estuarine and Marine Ecology (CEME), The Netherlands Institute of Ecology (NIOO-KNAW), Korringaweg 7, 4401 NT Yerseke, The Netherlands 2 Max Planck Institute for Marine Microbiology, Celsiusstr. 1, Bremen, 28359, Germany 3 Department of Oceanography, Florida State University, Tallahassee, FL 32306-4320, USA * now at: CSIRO Land and Water, 120 Meiers Rd Indooroopilly, 4075, Qld, Aus...