The Effect of Temperature, Water Activity, pH and Time on the Growth of Aspergillus niger, Alternaria alternate and Penicillium sp. in the historical papers

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MOHSENIAN SOMAYE; AZADI MEHRNAZ; AFSHARPOUR MARYAM; MOZAFAR FARHANG

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Journal: GANJINE-YE ASNAD Year:2018 | Volume:28 | Issue:3 (111) Page(s): 166-202

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Title

The Effect of Temperature, Water Activity, pH and Time on the Growth of Aspergillus niger, Alternaria alternate and Penicillium sp. in the historical papers

Author(s)

MOHSENIAN SOMAYE | AZADI MEHRNAZ | AFSHARPOUR MARYAM | MOZAFAR FARHANG | Issue Writer Certificate

Keywords

Historical papers;Biodegradation;Aspergillus nigerQ1

Alternaria alternataQ1

Penicillium sp.Q1

Abstract

Purpose: To examine material the effect of microorganisms responsible for the biodegradation process of old paper. Method and Research Design: The effect of temperature (5– 40 ° C), water activity (aw; 0• 80-0. 99) on Munktel paper 393 (100% cellose) with pH values of 3 to 9 in 168 hour and their interactions with the temporal rates of germination and mycelial growth of three mycotoxigenic strains of Aspergillus niger(PTCC 5251), Alternaria alternate (PTCC: 5224) and Penicillium sp. (PTCC: 5224) in vitro was measured on historical papers. The aw of the media was controlled with glycerol. Findings and Conclusion: The most important factor influencing the growth of the above mentioned fungi is water activity, then temperature and finally pH. Therefore, the most effective way to prevent biodegradation of papers of art works is to reduce water activity in them. Reducing water activity along with temperature control and deacidification minimizes the process of biodegradation. C, aw: 0. 98 and, pH: 6. 5 for Alternaria alternate. C, aw: 0. 97 and, pH: 6. 5 for Asper-gillus niger and T: 25 C, aw: 0. 99, pH: 6 for Penicillium sp., T: 30 The optimum growth occurred at T: 25.

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APA: Copy

MOHSENIAN, SOMAYE, AZADI, MEHRNAZ, AFSHARPOUR, MARYAM, & MOZAFAR, FARHANG. (2018). The Effect of Temperature, Water Activity, pH and Time on the Growth of Aspergillus niger, Alternaria alternate and Penicillium sp. in the historical papers. GANJINE-YE ASNAD, 28(3 (111)), 166-202. SID. https://sid.ir/paper/99173/en

Vancouver: Copy

MOHSENIAN SOMAYE, AZADI MEHRNAZ, AFSHARPOUR MARYAM, MOZAFAR FARHANG. The Effect of Temperature, Water Activity, pH and Time on the Growth of Aspergillus niger, Alternaria alternate and Penicillium sp. in the historical papers. GANJINE-YE ASNAD[Internet]. 2018;28(3 (111)):166-202. Available from: https://sid.ir/paper/99173/en

IEEE: Copy

SOMAYE MOHSENIAN, MEHRNAZ AZADI, MARYAM AFSHARPOUR, and FARHANG MOZAFAR, “The Effect of Temperature, Water Activity, pH and Time on the Growth of Aspergillus niger, Alternaria alternate and Penicillium sp. in the historical papers,” GANJINE-YE ASNAD, vol. 28, no. 3 (111), pp. 166–202, 2018, [Online]. Available: https://sid.ir/paper/99173/en

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