Polygalacturonase production by Rhizopus spp.

Screening of Mucor Spp. for the Production of Amylase, Lipase, Polygalacturonase and Protease

Fungi are well known by their ability to excrete enzymes into the environment. Among them, representatives of Mucor Fresen. have important biotechnological potential and some of them produce industrial enzymes. This work studied amylase, lipase, polygalacturonase and protease production by fifty-six isolates of Mucor belonging to 11 different taxa, selected from herbivores dung using solid medi...

optimization of polygalacturonase production by delftia sp.

Toxin production by Campylobacter spp.

Of all the virulence factors that were proposed for Campylobacter jejuni and related species to cause disease in humans, the discovery of toxin production was the most promising but led to a rather confusing and even disappointing stream of data. The discussion of whether proteinaceous exotoxins are relevant in disease remains open. One important reason for this lack of consensus is the anecdot...

Production of L-lactic acid by Rhizopus species.

Of 19 Rhizopus spp. only four produced L-lactic acid in shake-flask culture. Aerobically and in the presence of a neutralizing agent, Rhizopus oryzae NRRL 395 produced the highest concentration of L-lactic acid (65 g/l) but with O2-limited growth ethanol was produced instead.

Polygalacturonase Production by Aspergillus sp. in Air-Lift and Agitated Fermentor

Polygalacturonase production under different shear stress environments by Aspergillus sp. was studied. It was found that the rate of enzyme production in the stirred tank fermentor decreased with increasing the stirrer speed in the range 300-750 rpm. On the other hand, in a split cylinder air-lift fermentor, the rate of polygalacturonase production slightly increased with increasing in air ...