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Interpretation of results. After proper incubation, growth of isolated colonies or a group of colonies may be observed. Gram-positive bacteria demonstrate good growth (Fig. 1c and 2c) while most gram-negative bacteria do not grow or are partially inhibited (Fig. 1b and 2b). FIG. 1.
Phenylethyl alcohol agar (PEA) is a selective medium used to cultivate Gram-positive organisms, particularly cocci, from a sample containing a mixture of pathogens. The active ingredient, phenylethyl alcohol, inhibits or markedly reduces the growth of Gram-negative organisms by interfering with DNA synthesis.
1 lis 2011 · Protocol (PDF) Phenylethyl alcohol (PEA) agar allows growth of gram-positive organisms, particularly cocci, while inhibiting most gram-negative bacteria and fungi. Specifically, PEA agar is a selective medium that is used for the isolation of gram-positive Staphylococcus species and Streptococcus species from clinical specimens or specimens ...
15 maj 2024 · A selective medium called phenylethyl alcohol (PEA), is used to cultivate Gram positive organisms, especially cocci, in a sample containing pathogens. Phenylethyl alcohol is the active ingredient that inhibits or significantly reduces growth of Gram-negative organisms. It interferes with DNA synthesis.
5 lip 2024 · Phenylethyl alcohol agar (PEA) is a specialized growth medium extensively used in microbiology. Its importance lies in its ability to selectively isolate certain types of bacteria while inhibiting others, which makes it a vital tool for clinical and research laboratories.
Remel Phenylethyl Alcohol Agar (PEA) is a solid medium recommended for use in qualitative procedures for selective isolation of gram- positive cocci. SUMMARY AND EXPLANATION
Interpretation of Results PEA plates should be examined closely after incubation. The growth characteristics of gram-positive cocci are similar to those seen on sheep blood agar (BAP) except that colonies are smaller. Although gram-negative bacteria such as E. coli and Proteus species are inhibited on PEA Agar, prolonged incubation
