Determination of microbiological contamination, antibacterial and antioxidant activities of natural plant hazelnut (Corylus avellana L.) pollen.

Determination of microbiological contamination, antibacterial and antioxidant activities of natural plant hazelnut (Corylus avellana L.) pollen. J Environ Sci Health B. 2019 May 03;:1-8 Authors: Nikolaieva N, Kačániová M, González JC, Grygorieva O, Nôžková J Abstract The aim of our study is to determine microbial contamination, antibacterial and antioxidant activities of 14 pollen samples of Corylus avellana collected from different locations in Slovakia. Microbiological analysis was carried out in two steps: microbiological assays and studies of antibacterial activity of pollen extracts. The antimicrobial properties of pollen extracts were carried out with the disc-diffusion method. Methanol (70%), ethanol (70%) and distilled water were used for pollen extracts. Five strains of bacteria such as gram-negative (Salmonella enterica subsp. enterica CCM 3807, Escherichia coli CCM 2024, and Yersinia enterocolitica CCM 5671) and gram-positive (Staphylococcus aureus CCM 2461 and Bacillus thuringiensis CCM 19T) were tested. Antioxidant activity of pollen extracts was determined by the DPPH method. Bacterial analysis includes the determination of the total bacterial count ranged from 4.08 to 4.61 log CFU g-1, mesophilic aerobic bacteria ranged from 3.40 to 4.89 log CFU g-1, mesophilic anaerobic bacteria ranged from 3.20 to 4.52 log CFU g-1, coliform bacteria ranged from 3.30 to 4.55 log CFU g-1, yeasts and filamentous fungi ran...
Source: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes - Category: Environmental Health Authors: Tags: J Environ Sci Health B Source Type: research

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Source: Journal of Pharmaceutical and Biomedical Analysis - Category: Drugs & Pharmacology Source Type: research
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