الرئيسية / الفعاليات العلمية / ابحاث / Study of the effect of different factors on growth of aspergillus terreus and penicillium fungi that isolated from apple fruits

Study of the effect of different factors on growth of aspergillus terreus and penicillium fungi that isolated from apple fruits

HASSAN A. BAYDAA
Department of Biology, Faculty of Science, Kufa University, Iraq
(Received 19 March , 2017; accepted 21 May, 2017)
Key words : Aspergillus terreus, Penicillium, Apple fruits, Growth factors
Abstract – The work was conducted in the laboratories of Biology Department, Faculty of Science,
University of Kufa, it dealt with the study of the effect of different factors on growth of
Aspergillus terreus
and Penicillium fungi isolated from apple fruits. The laboratory experiments demonstrated the optimal
pH for
Aspergillus terreus and Penicillium were pH=3 with 0.57 g and pH=9 with 0.46 g respectively, but no
growth about two fungi in pH=7. This study showed that ability of the two fungi to grow in different
temperature ranges, the optimal temperature for
Aspergillus terreus and Penicillium were 30°C with 1.76
g and 40 °C with 1.57 g respectively, but the growth of Aspergillus terreus in (20 and 40)°C with (0.26 and
0.64) g respectively, the growth of
Penicillium in (20 and 30) °C with (0.21 and 0.83) g respectively. Also the
laboratory experiments proved that efficiency of
A. terreus and Penicillium in growth in different NaCl
concentrations, the highest growth for
Aspergillus terreus and Penicillium when the concentration of 15 g/
L with (0.82 and 0.74 ) g respectively while the amount of growth of two fungi in 5 and 10 g/L with ( 0.27
, 0.54) g , (0.22 , 0.41 ) g respectively. This study showed that efficiency from the two fungi growth in
different of culture media but the best media for
Aspergillus terreus and Penicillium was the potota
dextrose broth with (1.46, 1.41)g respectively but the growth about two fungi in soybean dextrose broth
and yeast extract broth with (0.52, 0.24)g respectively for
Aspergillus terreus and (0.36 ,0.18) g
respectively for
Penicillium.

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