A comparative study of the effects of the two preservatives, sodium benzoate and potassium sorbate on Aspergillus niger and Penicillium notatum

Ahmad Heydaryinia; Masoud Veissi; Ali Sadadi

Jundishapur Journal of Microbiology

Ahvaz Jundishapur University of Medical Sciences

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A comparative study of the effects of the two preservatives, sodium benzoate and potassium sorbate on Aspergillus niger and Penicillium notatum

Author(s):

Ahmad Heydaryinia¹,

Masoud Veissi

^2,*,

Ali Sadadi¹

1Department of Nutrition, School of Paramedical Sciences, Ahvaz Jundishapur University of Medical Sciences, Iran

2Department of Nutrition, School of Paramedical Sciences, Ahvaz Jundishapur University of Medical Sciences, [email protected], Iran

Jundishapur Journal of Microbiology:Vol. 4, issue 4

Published online:Oct 31, 2011

Article type:Research Article

How to Cite:Heydaryinia A, Veissi M, Sadadi A. A comparative study of the effects of the two preservatives, sodium benzoate and potassium sorbate on Aspergillus niger and Penicillium notatum. Jundishapur J Microbiol. 2011;4(4):. doi:

Abstract

Introduction and objective: Sodium benzoate (SB) and potassium sorbate (PS) have long been used as preservatives in foods and other products. The aims of this study were to compare the inhibitory effect of different concentrations of two preservatives SB and PS on Aspergillus niger and Penicillium notatum, and to study the probability of existing and synergistic effect in combining these two preservative together.

Materials and methods: Preservative effects of separate concentrations (0.02, 0.04, 0.06, 0.08 and 0.1%) and different combinations of SB and PS (0.08 SB + 0.02 PS, 0.06 SB + 0.04 PS, 0.04 SB + 0.06 PS, 0.02 SB + 0.08 PS) on A. niger and P. notatum in yeast extract sucrose broth at preschedule days i.e. 0, 4, 10, 14, 18, 21, 24, 28 and 40 were investigated.

Results: Sodium benzoate at 0.02% and 0.04% concentrations had no effect on the growth of A. niger but the 0.1% concentration had the highest effect. Sodium benzoate at 0.02% had a better effect than the same level of PS on P. notatum. Potassium sorbate with all the concentrations had a better effect on A. niger: like benzoate, increasing concentrations of sorbate resulted in a higher preservative effect; PS at 0.1% had the highest effect. Combination 0.02 SB+ 0.08 PS and 0.08 SB+ 0.02 PS had the greatest and the least effects respectively.

Conclusion: Regarding the combinations, no synergistic effect has been observed, and no combination in the prevention of growth was better than the 0.1% concentrations of the two preservatives.

Significance and impact of the study: The better use of preservatives includes increase of antimicrobial spectrum, extension of pH range, reduction of toxicity, and prevention of microbial resistance.

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Author(s):

Ahmad Heydaryinia:[PubMed][Scholar]
Masoud Veissi:[PubMed][Scholar]
Ali Sadadi:[PubMed][Scholar]

Ahvaz Jundishapur University of Medical Sciences

Outlines

A comparative study of the effects of the two preservatives, sodium benzoate and potassium sorbate on Aspergillus niger and Penicillium notatum

Abstract

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