- Type of paper
: Book
Title:
- Authors:
- Duraković, Senadin (10973)
Publisher: Medicinska naklada
Year: 1991
Number of pages: 300
Language: hrvatski
- Type of paper
: Book
Title:
- Authors:
- Duraković, Senadin (10973)
Publisher: Znanstvena i stručna biblioteka
Year: 1995
Number of pages: 1250
Language: hrvatski
- Type of paper
: Paper in proceedings
Title: Antifungal and antimycotoxigenic properties of newly
synthesized derivates of tetraketone
- Authors:
- Duraković, Senadin (10973)
- Pavlaković, Z
- Filipović-Kovačević, Željka
- Šarac-Arneri, Ruža
- Lalić, Ljerka Marija
- Colić, I
- Duraković, Zijad (10962)
Proceedings title: Abstract books
Language: engleski
Place: Vienna, Austrija
Year: 1995
Pages: from 320 to 323
Meeting: Proc of Euro Food Chem VIII
Held: from 09/18/95 to 09/20/95
Summary: The effect of newly synthesized derivative 5-aryl-5-hydroxy
-2-/aryl-(hydroxyimino/ethyl/-1-cyclohexanone, on growth and
zearalenone accumulation by toxigenic mold Fusarium graminearum
ZMPBF 1244 was studied in yeast extract-sucrose (YES) medium to
determine the possible use of this compound as a mean of
controlling zearalenone accumulation.Experiments were carried out
in a stationary culture at temperatures of 10ř and 20řC , respec-
tively, with and without "temperature shock" for 25 days.Mycelial
dry weights were determined gravimetrically, and concentration
of zearalenone (ZEA) were measured fluorodensitometrically using
a Camag TLC Scanner.In experiments with a "temperature shock" and
at pH 5,5 concentration of investigated derivative higher than
15,0 Šg/mL of liquid medium completely inhibited growth and ZEA
accumulation after 15 days of incubation at temperatures of 10ř
and 20řC.Concentrations of 5,0 Šg/mL and 10,0 Šg/mL partially
inhibited growth and decreased ZEA accumulation by 45% and 70%
respectively.Inhibition was depending of the time of cultivation
and pH values of substrate.
Keywords: mycotoxins, zearalenone, "temperature shock", biosynthesis, inhibition
- Type of paper
: Paper in proceedings
Title: Relationship of Aspergillus parasiticus and Fusarium
graminearum Biomass to the Accumulation of Aflatoxins in Wheat
- Authors:
- Duraković, Senadin (10973)
- Duraković, Zijad (10962)
- Colić, I
- Golem, FV
- Lalić, Ljerka Marija
- Editors
- Collar, C
- Martinez-Anaya, M.A.
- Morell, J
- Benedito de Barber, C
Proceedings title: Progress in Food Fermentation
Language: engleski
Place: Valencia, Spain
Year: 1993
ISBN/ISSN: IATA/SCIC
Pages: from 558 to 563
Meeting: Progress in Food Fermentation
Held: from 09/20/93 to 09/22/93
Summary: The relationship between mold biomass and the biosynthesis
of
aflatoxins B1 and G1 (AFB1 and AFG1) on solid substrates (whole
and crushed wheat grain) at temperatures from 15-35řC and a water
content in the substrate of 20-40% has been investigated. The
experiments have been carried out with the aflatoxigenous mold
Aspergillus parasiticus NRRL 2999 in pure culture and in mixed
culture respectively, the latter with the mold Fusarium
graminearum ZMBF 1244. Mold F.graminearum does not produce
aflatoxins and chromatographically similar compounds.
The amount of biomass was estimated by measuring the chitin
content, and the aflatoxin concentration by means of a
fluorodensitometer. It has been established that the biosynthesis
of the examined aflatoxins and their ratio primarily depend on
the temperature of cultivation, rather than on the growth of the
mycelium.The biomass of the mixed culture of A.parasiticus and
F.graminearum after six weeks of cultivation reduces the amount
of AFB1 by 45-60%, and the amount of AFG1 by 35-70%. The
decrease of both toxins concentration is more pronounced in the
substrate with a higher initial water content and a higher
temperature of cultivation.
Keywords: molds, biomass, biosynthesis, aflatoxins, mixed cultures
- Type of paper
: Summary in proceedings
Title: Inhibition of Mold Growth and Ochratoxin Production by
Newly Synthetized Derivatives of Dehydroacetic Acid
- Authors:
- Duraković, Senadin (10973)
- Colić, I
- Delaš, Frane (9173)
- Markov, Ksenija (132383)
- Radić, B
- Editors
- Trichopoulou, A
Proceedings title: New Developments of Consumer Concern
Language: engleski
Place: Athens, Greece
Year: 1991
Pages: from 61 to 61
Meeting: Sixth European Nutrition Conference
Held: from 05/25/91 to 05/28/91
Summary: The effect of dehydroacetic acid (DHA) and its newly
synthetized
derivatives, 4-hydroxy-3-(p-toluoyl)-6-(p-tolil)-2H-pyrane-2-one
(DHT) and 5-Bromo-4-hydroxy-3-(p-toluoyl)-6-(p-tolil)-2H-pyrane-
2-one (BrDHT) on growth and ochratoxin A accumulation by mold
Aspergillus ochraceus NRRL 3174 wasw studied in yeast-extract-sucrose (YES)
medium to determine the possible use of these compounds as a means of
controlling ochratoxin A accumulation. Experiments were carried out in a
stationary culture attemperatures of 15ř and 25řC, respectively during 20
days. Mycelial dry weights were determined gravimetrically, and
concentrations of ochratoxin A was quantitated fluoro- densitometrically
using a Camag TLC Scanner.
Concentrations of DHA and DHT of 0,1 and 0,2 mmol/L respectively
stimulated, but concentrations higher than 0,5 mmol/L of these compounds,
mold growth and ochratoxin A synthesis partially inhibited. In experiments
with 0,2 mmol/L of BrDHT mold growth and synthesisof ochratoxin A were
inhibited completely depending on time and temperature of cultivation.
Keywords: molds,ochratoxins,dehydroacetic acid,newly synthetized derivatives
- Type of paper
: Summary in proceedings
Title: The Role of Fungal Growth in Mixed Cultures on Production
of Aflatoxins on Corn
- Authors:
- Duraković, Senadin (10973)
- Colić, I
- Delaš, Frane (9173)
- Markov, Ksenija (132383)
- Sušnik, I
- Editors
- Trichopoulou, A
Proceedings title: New Developments of Consumer Concern
Language: engleski
Place: Athens, Greece
Year: 1991
Pages: from 61 to 61
Meeting: Sixth European Nutrition Conference
Held: from 05/25/91 to 05/28/91
Summary: The relationship between biomass and the biosynthesis of
aflatoxins B1 and G1 on solid substrates (whole and crushed mains grain) at
temperatures from 15-40řC and the water content in the substrate of 20-40%
has been investigated. Experiments have been carried out with the
aflatoxigenic fungus Aspergillus parasiticus NRRL 2999 in pure and mixed
cultures with the fungus Trichothecium roseum ZMPBF 1226.Trichothecium
roseum does not produce aflatoxins and chromatographically similar
compounds. The amount of biomass was estimated by measuring the chitin
content the aflatoxin concentration by means of UV light and a
fluorodensitometer.It was established that the biosynthesis of the
aflatoxins and their ratio primarily depend on the temperature of
cultivation.The biomass of the mixed culture of A. parasiticus and T.roseum
after 28 days of cultivation reduced the amount of aflatoxin B1 by 15-40%
and the amount of aflatoxin G1 by 25-60% in respect to highest values
obtained in the process of biosynthesis.The decrease of concentration of
both toxins is more pronounced in the substrate at the higher initial water
contents and at the higher temperatures of cultivation.
Keywords: fungi,mixed cultures,aflatoxins,corn
- Type of paper
: Summary in proceedings
Title: New synthetized analogues of dehydroacetic acid to control
aflatoxin and ochratoxin accumulation
- Authors:
- Duraković, Senadin (10973)
- Radić, B
- Sušnik, I
Proceedings title: Ecologically rational development of chemical technologies
Language: engleski
Place: Zagreb
Year: 1993
Pages: from 0 to 0
Meeting: XII skup hrvatskih kemičara
Held: from 02/08/93 to 02/10/93
Summary: The effect of dehydracetic acid (DHA) and its newly
sinthesized
analogues,4-hydroxy-3-(p-toluoyl)-6-(p-tolyl)-2H-pyrane-2-one
(DHT) and 5-bromo-4-hydroxy-3-(p-toluoyl)-6-(p-tolyl)-2Hpyrane-
2-one (BrDHT), were tested for antifunal and antiaflatoxigenic
activity in experiments with the moulds Aspergillus parasiticus
NRRL 2999 and Aspergillus ochraceus NRRL 3174 in the yeast-extract-sucrose
(YES) medium.Investigations were carried out to determine the possible use
of these compounds as a means of controlling aflatoxin and ochratoxin A
accumulation. Experiments were carried out in a stacionary culture at
different temperatures during 15 and 28 days. The investigated compound DHA
and DHT are poor inhibitors. Very low DHA and DHT concentrations
even stimulated mould growth and production of this toxins. In experiments
with BrDHT analognes mould growth and synthesis of aflatoxins and
ochratoxin A were inhibited completely depending on the time and
temperature of cultivation. In all experiments mycelial dry weights were
determined gravimetrically. Concentration of this toxins were measured
fluoro-
densitometrically, and qualitative confirmation were made with mass
spectra.
Keywords: dehydroacetic acid, newly synthetized analogues, aflatoxins,ochratoxins
- Type of paper
: Summary in proceedings
Title: Growth and biosynthesis of aflatoxins by Aspergillus
parasiticus in the presence of newly synthetized derivatives of
dehydroacetic acid
- Authors:
- Duraković, Senadin (10973)
- Colić, I
- Duraković, Zijad (10962)
- Golem, FV
- Radić, B
- Sušnik, I
Proceedings title: Abstract books
Language: engleski
Place: Firenze, Italy
Year: 1993
Pages: from 0 to 0
Meeting: Sixth European Congress on Biotechnology
Held: from 06/13/93 to 06/17/93
Summary: Dehydroacetic acid (DHA) and its newly synthetized
derivatives,
4-hydroxy-3-(p-toluoyl)-6-(p-tolyl)-2H-pyrane-2-one (DHT) and
5-Bromo-4-hydroxy-3-(p-toluoyl)-6-(p-tolyl)-2H-pyrane-2-one
(BrDHT), were tested for antifungal and antiaflatoxigenicactivity in
experiments with the aflatoxigenic mold Aspergillus
parasiticus NRRL 2999 in yeast-extract-sucrose (YES) medium.
Experiments were carried out in a stationary culture at temperatures of 20
and 28řC respectively during 28 days.
Mycelial dry weights were determined gravimetrically, and
concentration of aflatoxin B1 and G1 were quantitated
fluorodensitometrically, using a Camag TLC scanner.DHA and
DHT concentrations of 1,5 ŠM/L and 3,0 ŠM/L respectively
stimulated mold growth and aflatoxin B1 and G1 synthesis,
but concentrations higher than 5,0 ŠM/L produced an inhibitory effect.In
the presence of low BrDHT concentrations mold growth
decreased by 60% and 80% and toxin concentrations by 85% and 100%,
respectively.
Keywords: aflatoxigenous molds,aflatoxins,dehydracetic acid, newly synthetized derivatives
- Type of paper
: Summary in proceedings
Title: Antifungal and antiohratoxigenic properties of newly
synthetized derivatives of tetraketone
- Authors:
- Duraković, Senadin (10973)
- Duraković, Zijad (10962)
- Colić, I
- Golem, FV
- Filipović-Marinić, N
- Šarac-Arneri, Ruža
Proceedings title: Abstract books
Language: engleski
Place: Firenze, Italy
Year: 1993
Pages: from 0 to 0
Meeting: Sixth European Congress on Biotechnology
Held: from 06/13/93 to 06/17/93
Summary: The effect of newly synthetized derivative
5-aryl-5-hydroxy-
2-/aryl-(hydroxyimino) ethyl/-1-cyclohexanone, on growth and
ochratoxin A accumulation by ochratoxigenous mould Aspergillus
ochraceus NRRL 3174 was studied in yeast-extract-sucrose (YES)
medium to determine the possible use of this compound as a mean
of controlling ochratoxin A accumulation.At pH 5,5, concentration
of investigated derivative higher than 20,0 Šg/L of liquid
medium completely inhibited growth and ochratoxin A accumulation
after 10 days of incubation at temperatures of 15ř and 25řC.
Concentration of 5,0 Šg/L and 10,0 Šg/L partially inhibited growth and
decreased ochratoxin A accumalition by 55% and 70%,
respectively. Inhibition was depending on the time of cultivation
and pH values of substrate.
Keywords: ochratoxin A, Aspergillus ochraceus, inhibition
- Type of paper
: Summary in proceedings
Title: Growth and Biosynthesis of Zearalenone by Fusarium
graminearum in the Presence of Newly Synthesized Schiff Base
- Authors:
- Duraković, Senadin (10973)
- Pavlaković, Z
- Filipović-Kovačević, Željka
- Sušnik, I
- Lalić, Ljerka Marija
- Radić, B
- Colić, I
Proceedings title: Book of Abstracts
Language: engleski
Place: Vienna, Austrija
Year: 1995
Meeting: Seventh European Nutrition Conference
Held: from 05/24/95 to 05/28/95
Summary: The effect of newly synthetized Schiff base on the growth
and biosynthesis of zearalenone by mould Fusarium graminearum ZMPBF
1244 was studied on barleycorn to determine the possible use of this
compound as a means of controlling zearalenone accumulation.
Experiments were carried out in a stationary culture at tempera- tures of
10,15 and 20řC, respectively, with and without "temperature shock" for 42
days. In experiments with a "temperature shock", Schiff base inhibited the
growth of mold by 70% and zearalenone accumulation by 95% in respect to
highest values obtained in control. Using different concentrations of
Schiff base we found that, although Schiff base did strongly inhibit
zearalenone accumulation by 95%, it did not completely prevent its 20,0
Šg/g of barleycorn.
Keywords: molds, zearalenone, biosynthesis, Schiff base
- Type of paper
: Summary in proceedings
Title: Biological indicators in mycotoxin toxicity control
- Authors:
- Duraković, Senadin (10973)
- Zlojić, Ivan
- Piljac, Ivan (37231)
- Delaš, Frane (9173)
- Pavlinić, S
Proceedings title: Abstract books
Language: engleski
Place: Zagreb
Year: 1994
Meeting: 2nd Croatian congress of Food technologists, Biotechnologists and Nutritionists with International participations
Held: from 06/15/94 to 06/17/94
Summary: The larvicidal effect of concentration of aflatoxin B1 and
diacetoxyscirpenol at temperatures of 20 and 35řC, on the
larvae Artemia salina was investigated.Concentrations resulting
in 50% mortality, determined with these organisms exposed to
known mycotoxin for 24 hours were(Šg/mL): aflatoxin B1 1.0, 2.0
and 3.0, and diacetoxyscirpenol 0.8, 1.8, 2.0 and 4.0.In a study
of aflatoxin B1 and diacetoxyscirpenol synergism in acute toxicity, the
LD50 values of toxin pairs exhibited a distinct increase in toxicity.
Keywords: mycotoxins, aflatoxins, diacetoxyscirpenol, mycotoxic synergism
- Type of paper
: Mentorship
Title:
Faculty: Prehrambeno-biotehnološki fakultet Sveučilište u Zagrebu,
Mentor: DURAKOVIĆ SENADIN
Author: Radoičić Vlasta
Degree level: D.A.
- Type of paper
: Mentorship
Title:
Faculty: Prehrambeno-biotehnološki fakultet Sveučilište u Zagrebu,
Mentor: DURAKOVIĆ SENADIN
Author: Kuhar Vedranka
Degree level: D.A.
- Type of paper
: Mentorship
Title:
Faculty: Prehrambeno-biotehnološki fakultet Sveučilište u Zagrebu,
Mentor: DURAKOVIĆ SENADIN
Author: Raguž Ivica
Degree level: D.A.
- Type of paper
: Mentorship
Title:
Faculty: Prehrambeno-biotehnološki fakultet Sveučilište u Zagrebu,
Mentor: DURAKOVIĆ SENADIN
Author: Štimac Irena
Degree level: D.A.
- Type of paper
: Mentorship
Title:
Faculty: Prehrambeno-biotehnološki fakultet Sveučilište u Zagrebu,
Mentor: DURAKOVIĆ SENADIN
Author: Režić Vesna
Degree level: D.A.
- Type of paper
: Mentorship
Title:
Faculty: Prehrambeno-biotehnološki fakultet Sveučilište u Zagrebu,
Mentor: DURAKOVIĆ SENADIN
Author: Uskok Dalibor
Degree level: D.A.
- Type of paper
: Mentorship
Title:
Faculty: Prehrambeno-biotehnološki fakultet Sveučilište u Zagrebu,
Mentor: DURAKOVIĆ SENADIN
Author: Jović Nataša
Degree level: D.A.
- Type of paper
: Mentorship
Title:
Faculty: Prehrambeno-biotehnološki fakultet Sveučilište u Zagrebu,
Mentor: DURAKOVIĆ SENADIN
Author: Talapko Josip
Degree level: M.A.
- Type of paper
: Mentorship
Title:
Faculty: Prehrambeno-biotehnološki fakultet Sveučilište u Zagrebu,
Mentor: DURAKOVIĆ SENADIN
Author: Zlojić Ivan
Degree level: M.A.
- Type of paper
: Mentorship
Title:
Faculty: Prehrambeno-biotehnološki fakultet Sveučilište u Zagrebu,
Mentor: DURAKOVIĆ SENADIN
Author: Markov mr.sc. Ksenija
Degree level: M.A.
- Type of paper
: Mentorship
Title:
Faculty: Prehrambeno-biotehnološki fakultet Sveučilište u Zagrebu,
Mentor: DURAKOVIĆ SENADIN
Author: Delaš Frane
Degree level: Ph.D.
