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Antimicrobial properties of phenolic compounds from berries
Identifier
017823
Type of Spiritual Experience
Background
A description of the experience
J Appl Microbiol. 2001 Apr;90(4):494-507.
Antimicrobial properties of phenolic compounds from berries.
Puupponen-Pimiä R1, Nohynek L, Meier C, Kähkönen M, Heinonen M, Hopia A, Oksman-Caldentey KM.
- 1VTT Biotechnology, PO Box 1500 (Tietotie 2), FIN-02044 VTT, Finland. riitta.puupponen-pimia@vtt.fi
Abstract
AIMS:
To investigate the antimicrobial properties of phenolic compounds present in Finnish berries against probiotic bacteria and other intestinal bacteria, including pathogenic species.
METHODS AND RESULTS:
Antimicrobial activity of pure phenolic compounds representing flavonoids and phenolic acids, and eight extracts from common Finnish berries, was measured against selected Gram-positive and Gram-negative bacterial species, including probiotic bacteria and the intestinal pathogen Salmonella.
Antimicrobial activity was screened by an agar diffusion method and bacterial growth was measured in liquid culture as a more accurate assay. Myricetin inhibited the growth of all lactic acid bacteria derived from the human gastrointestinal tract flora but it did not affect the Salmonella strain.
In general, berry extracts inhibited the growth of Gram-negative but not Gram-positive bacteria. These variations may reflect differences in cell surface structures between Gram-negative and Gram-positive bacteria.
Cloudberry, raspberry and strawberry were strong inhibitors of Salmonella. Sea buckthorn berry and blackcurrant showed the least activity against Gram-negative bacteria.
CONCLUSION:
Different bacterial species exhibit different sensitivities towards phenolics.
SIGNIFICANCE AND IMPACT OF THE STUDY:
These properties can be utilized in functional food development and in food preservative purposes.
PMID:
11309059
The source of the experience
PubMedConcepts, symbols and science items
Concepts
Symbols
Science Items
Activities and commonsteps
Activities
Overloads
AntibioticsBacterial infection
Suppressions
CloudberriesPolyphenols
Raspberries
Strawberries
Tannins