Effect of cherry leaves’ extracts on Aspergillus niger in juice

Authors:

Sabire Yerlikaya, Sefa Topuz

 


Volume 29, Issue 2;
Pages: 59-61; 2023
ISSN: 2069-0053 (print), Agroprint;
ISSN (online): 2068-9551

Abstract:

In this research, Aspergillus niger inhibition with ethanol and methanol extracts of cherry leaves in juice was investigated. Aspergillus niger concentration 3.2 log cfu/mL is selected. Ethanolic (air-dried, microwave-dried) and methanolic (air-dried, microwave-dried) extracts (1 mL) are added to juice (9 mL), separetely. They were left for incubation at 25°C for 5 minutes. Then Aspergillus niger (1 mL) is put into test tubes on extracts and left for incubation at 25°C for 24 h. All extracts significantly reduced Aspergillus niger numbers in juice compared to control samples. The highest inhibitory activity was detected in the sample extracted with ethanol from air-dried cherry leaves (2.8 log cfu/mL). The effect of cherry leaves ethanol extract was found to be higher than methanol extract. The reason for this might be that the phenolic compounds in cherry leaves are more soluble in ethanol than in methanol. These results demonstrated that cherry leaves can be used for decrease Aspergillus niger in juice at 25°C.

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