Biomedical subjects

N Aksöz

Publications and source records attributed to N Aksöz.

7 recordsLinked to original sources

PubMed1996

Production of gibberellic acid by Aspergillus niger using some food industry wastes.

The production of gibberellic acid by Aspergillus niger and the possibility of utilizing food industry waste and residues as the sources of carbon in media were investigated. Media prepared from molasses, vinasse, whey, sugar-beet waste and fruit pomace were used and GA3 yields were found in concentrations 310, 273.14, 120, 73, 118.13 mg/l in such media, respectively. It was observed that food industry wastes can be used as cheap sources of carbon for gibberellic acid production by Aspergillus niger.

Aspergillus niger↗

PubMed1987

[The isolation, classification and some physiological properties of a protease-producing bacterium].

A proteolytic bacterium was isolated from specimen collected from soil. The protease producing bacterium showed optimal growth in media with neutral pH and when incubated at 30 degrees C aerobically. According to the classification results, the gram (+), sporulating bacillus was a Bacillus genus member. Also some physiological properties of the isolated bacterium was determined.

Aerobiosis↗

PubMed1987

[Effects of some physiologic factors on Bacillus sp. urease activity].

In this study, culture supernatant of Bacillus sp. has been used as crude enzyme source. It has been determined that 1% urea is the optimal substrate concentration for maximal urease activity. On the other hand, Bacillus sp. urease showed its maximal activity at pH:7.0-8.0, 30 degrees C. 50 minutes of incubation has been found to be the most suitable incubation period. The activity of the enzyme showed a 36% decrease when stored at +4 degrees C for a month.

Bacillus↗

PubMed1987

[Effect of physiological factors on biosynthesis of urease in Bacillus spp].

In this study, urea was shown to be the inducer of the urease enzyme of the soil isolate Bacillus spp. The extracellular urease enzyme production was repressed in UGT cultures containing ammonia, ammonium chloride or tryptophane and in nutrient broth cultures. The optimal urease production culture conditions were determined as pH: 7.0, 30 degrees C and 150 rpm.

Bacillus↗

PubMed1985

[Halophilic bacteria].

Explore the source record for details and available documents.

Bacterial Proteins↗

PubMed1984

[Isolation of a moderately halophilic bacterium from Salt Lake, Turkey].

A moderate halophilic bacterium was isolated from Salt Lake, Turkey. Dundas' complex medium was used for further investigations. The bacterium showed optimal growth in medium containing 8% NaCl. Growth was also detected in media with 0, 5, 12.5, 20 and 25 (%) NaCl.

Bacteria↗

PubMed1976

[The fungal flora of Ankara air in January 1972 and 1974 and its relationship to allergic diseases].

The fungal flora of the air in Ankara was searched during first week of January 1972 and 1974. Different areas of the city were chosen for investigation. The central and outskirt areas showed different patterns of fungal flora during January 1972 and January 1974. In the central areas there was a remarkable decrease in yeast flora between the two years. However, mould flora was increased in some extent. No notable difference could be detected in outskirt areas. Penicillium and Aspergillus species were isolated most frequently. It is concluded that this flora was influenced by heavy pollution of the air in Ankara. This pollution is caused mainly by: (1) Heating systems with crude coal and oil, (2) Heavy motor traffic, (3) Geographical situation of the city, cup-shaped land with poor air draughts.

Air Microbiology↗