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1

Purification and general properties of pectin methyl esterase from Curvularia inaequalis NRRL 13884 in solid state culture using orange peels as an inducer

100%
Afifi A. F., Fawzi E. M., Foaad M. A.
Acta Microbiologica Polonica
|
2002
|
tom 51
|
nr 3
2
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Immobilization of pseudomonas sp. KLM9 in sodium alginate: a promising technique for L-glutaminase production

88%
Divatar M., Sandhya G., Ahemad S., Lingappa K.
International Letters of Natural Sciences
|
2015
|
tom 04
Microbes and process development are gaining considerable importance owing to their exploitation and suitability for the production of the enzymes of therapeutic and industrial significance. In the present study attempts were made to immobilize the Pseudomonas Sp. KLM9 in different supporting matrix to analyze the possible enhancement in the production of L-Glutaminase. The consequences of the study reveal that, sodium alginate at 3.5% concentration was found to be the better supporting matrix than the others. Further, initial pH 7 of the incubation media, incubation temperature of 37 °C were supported good yield of L-Glutaminase by immobilized Pseudomonas Sp KLM9. The fermentation period was reduced to 36 hr with immobilized cells. There is moderate increase in the production L-Glutaminase by the immobilized cells than the free cells of Pseudomonas Sp KLM9. Biomass obtained from the 18 hr old culture of Pseudomonas Sp KLM9 was found better to immobilize for the production of L-Glutaminase.
3

Statistical optimization of alpha-amylase production by probiotic Lactobacillus plantarum MTCC 1407 in submerged fermentation

75%
Panda S. H., Swain M. R., Kar S., Ray R. C., Montet D.
Polish Journal of Microbiology
|
2008
|
tom 57
|
nr 2
Production and purification of α-amylase by probiotic Lactobacillus plantarum MTCC 1407 has been investigated under submerged fennentation using Mann Rogassa Sharpe medium containing (1%) soluble starch in lieu of glucose (2%) as carbon source. Response Surface Methodology was used to evaluate the effect of main variables, i.e. incubation period, pH and temperature on enzyme production. A full factorial Central Composite Design was applied to study these main factors that affected α-amylase production. The experimental results showed that the optimum incubation period, pH and temperature were 36 h, 7.0 and 35°C, respectively. The purified enzyme (by ammonium sulphate precipitation) had a molecular mass of 75 450 Da in SDS-PAGE.
4

Influence of medium components and metabolic inhibitors on glucose oxidase production by Aspergillus niger mycelium

75%
Gromada A., Fiedurek J.
Acta Microbiologica Polonica
|
1996
|
tom 45
|
nr 1
5

Study of solar photosensitization processes on dermatophytic fungi

75%
Ouf S. A., Abdel-Kader M. H., Shokeir H. A., El-Adly A. A.
Acta Microbiologica Polonica
|
2003
|
tom 52
|
nr 1
6

Enzyme production and biotypes of vaginal Candida albicans

75%
Cybulski Z., Krzeminska-Jaskowiak E., Majewski P., Chylak J., Pawlik M.
Polish Journal of Microbiology
|
2005
|
tom 54
|
nr 3
Candidial vulvovaginitis is one of the most common forms of vaginal infection. However, the origin of the infecting organism is sometimes doubtful. Therefore, epidemiological investigation can help to recognize routes of infection spreading. The aim of the present study was to determine the ability to produce esterases by clinical isolates of C. albicans and to find the relationship between their serotypes. Also, it was intended to determine the ability of these strains to produce proteases and lipases as well as the ability of the strains to assimilate carbohydrates. 46 strains of C. albicans isolates from the vagina of women suffering from vulvovaginitis were examined. Three main kinds of esterases were distinquished by their spectra of hydrolytic activity toward a-naphthyl acetate, P-naphthyl propionate and indoxyl acetate. The strains were grouped into four categories: three categories in which esterase patterns were observed and one category in which esterase bands were not observed. On the basis of the 20 carbon sources assimilated, the C. albicans strains were categorized into 11 biotypes with the major biotype accounting for 21 (45.7%) strains. The examination of proteolytic activity using casein and albumin enabled to divide the strains into four groups. All of the examined strains belonged to serotype A and all of them expressed lipolytic activity. Esterase electrophoretic patterns and biotypes based on proteolytic activities were compared with the ability to assimilate carbon from various sources.
7
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Screening and characterization of Fibrinolytic protease producing Bacillus circulans from mangrove sediments pitchavaram, South East Coast of India

63%
Sadeesh Kumar R., Rajesh R., Gokulakrishnan S., Subramanian J.
International Letters of Natural Sciences
|
2015
|
tom 01
Regulation and production of Fibrinolytic enzymes from bacterial sources especially from Bacillus strains has taken a leading role in the medical sciences for the treatment of cardiovascular disorders as it removes thrombus or clots adding to its significant role in curing human health issues saving millions. Significant progress has been made during the last few years on the studies of fibrinolytic enzymes in identifying, cloning, purification, characterization and overproduction of these for commercialization in medical sciences and in fields like detergents development. Production of fibrinolytic enzyme from Bacillus circulans was done using Nutrient broth medium. In addition, a strong fibrinolytic enzyme was purified from the cultivation media. The purified enzyme was almost homogeneous with other species of same genus, as examined by SDS−PAGE and sephadex G-75 column chromatography. The enzyme had an optimal pH of 7-12, an optimal temperature of 50 °C, for fibrin hydrolysis. The molecular mass estimated by gel filtration was 24 to36 KDa. Further studies for characterization and structural elucidation are necessary for their medicinal applications and molecular biological characteristics.
8

Production of cell wall degrading enzymes and toxins by Colletotrichum capsici and Alternaria alternata causing fruit rot of chillies

51%
Anand T., Bhaskaran R., Raguchander T., Karthikeyan G., Rajesh M., Senthilraja G.
Journal of Plant Protection Research
|
2008
|
tom 48
|
nr 4
437-451
The virulent isolates of Colletotrichum capsici and Alternaria alternata produced more cellulolytic enzymes viz., C1 and Cxin vitro than the avirulent ones and the activity of these enzymes increased with the increase in age of culture. The virulent isolates of C. capsici and A. alternata produced more pectinolytic enzymes (macerating enzymes, pectin methyl esterase and endo polygalacturonase) than the avirulent ones. All the pectinolytic enzymes were highly active in 10-day-old culture and the activities decreased with the increase of culture age. Whereas the activity of enzymes produced by avirulent isolate of pathogens did not decrease and these enzyme activities increased with the increase in the age of culture. These pathogens also produced nonspecific toxic metabolites in culture filtrate which reduced seed germination, root length, shoot length and vigour index of the seedlings of chilli, rice, mungbean, maize, cotton, groundnut, okra, egg plant, cucumber and tomato. The toxins of the pathogens reduced seed germination and caused mortality of chilli seedlings in pot culture. The toxins also produced phytotoxic symptoms in the treated ripe and green chilli fruits and leaves.
9

Polysaccharase activities of Chaetomium murorum and C.bostrychodes grown on groundnut shells

51%
El-Gindy A. A., Saad R. R.
Acta Microbiologica Polonica
|
1992
|
tom 41
|
nr 1-2
10

Alpha-amylase production by Streptomyces erumpens MTCC 7317 in solid state fermentation using response surface methodology [RSM]

51%
Kar S., Ray R. C., Mohapatra U. B.
Polish Journal of Microbiology
|
2008
|
tom 57
|
nr 4
ProductiomnftFamylase under solid state fermentation by Streptomyces erumpens MTCC 7317 has been investigated using different agro-industrial residues, i.e. cassava bagasse, sugarcane bagasse and wheat bran; wheat bran was found to be the best substrate. Among different nitrogen source supplemented to wheat bran, beef extract or peptone (1 %) showed maximum enzyme production. Response surface methodology was used to evaluate the effect of main process parameters as incubation period (48 h), moisture holding capacity (70%), pH (7.0) and temperature (50°C) on enzyme production by applying a full factorial central composite design. The maximum hydrolysis of soluble starch (90%) and cassava starch (75%) was obtained with the application of 4 ml (~12096 U) of S. erumpens crude enzyme after 5 h of incubation.
11

Effect of heavy metals on enzymes production by Hebeloma crustuliniforme

51%
Dahm H., Strzelczyk E.
Acta Mycologica
|
1996
|
tom 31
|
nr 2
12

Optimization of physico-chemical conditions for improved production of beta-amylase by Bacillus megaterium B6

45%
Ray R. R., Jana S. C., Nanda G.
Acta Microbiologica Polonica
|
1995
|
tom 44
|
nr 1
13

Selection of strain, culture conditions and extraction procedures for optimum production of beta-galactosidase from Kluyveromyces fragilis

38%
Fiedurek J., Szczodrak J.
Acta Microbiologica Polonica
|
1994
|
tom 43
|
nr 1
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