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Evaluation of the antimicrobial acti...

Wang, Chenbo.

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Evaluation of the antimicrobial activity of a bifidobacteria mix against Escherichia coli O157:H7 under aerobic conditions.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Evaluation of the antimicrobial activity of a bifidobacteria mix against Escherichia coli O157:H7 under aerobic conditions./
Author:	Wang, Chenbo.
Description:	105 p.
Notes:	Adviser: Juan L. Silva.
Contained By:	Masters Abstracts International45-02.
Subject:	Agriculture, Food Science and Technology. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1438715
ISBN:	9780542937101

Evaluation of the antimicrobial activity of a bifidobacteria mix against Escherichia coli O157:H7 under aerobic conditions.
Wang, Chenbo.

Evaluation of the antimicrobial activity of a bifidobacteria mix against Escherichia coli O157:H7 under aerobic conditions. - 105 p.

Adviser: Juan L. Silva.

Thesis (M.S.)--Mississippi State University, 2006.

A bifidobacteria mix (nine strains) was evaluated for its effect on the growth and survival of Escherichia coli O157:H7 (ATCC 43890) in 11% NFDM and MRS broth under the optimum growth conditions for E. coli O157:H7 growth (37°C, aerobic). Preliminary experiments were conducted to obtain the growth curves of the 9 strains of bifidobacteria and E. coli O157:H7 and confirm the inhibitory effect of acidity on E. coli O157:H7 (pH of media adjusted to 3.8). Acid-adapted E. coli O157:H7 showed no difference in resistance toward bifidobacteria (P>0.05) when compared to the non-acid adapted one. Escherichia coli O157:H7 did not survive in the supernatant of the bifidobacteria mix collected after incubation (37°C) with aerobic shaking (8 h). However, the pathogen was able to grow after the pH of the supernatant was adjusted to 6.50 (pH of fresh MRS broth). Results suggest that a high content of bifidobacteria has a strong inhibitory effect on E. coli O157:H7, in part due to the low pH. However, products from bifidobacteria may also exert inhibitory effects.

ISBN: 9780542937101Subjects--Topical Terms:

1017813
Agriculture, Food Science and Technology.

Evaluation of the antimicrobial activity of a bifidobacteria mix against Escherichia coli O157:H7 under aerobic conditions.
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005 20110901
008 110901s2006 eng d
020 $a 9780542937101
035 $a (UMI)AAI1438715
035 $a AAI1438715
040 $a UMI $c UMI
100 1 $a Wang, Chenbo. $3 1287232
245 1 0 $a Evaluation of the antimicrobial activity of a bifidobacteria mix against Escherichia coli O157:H7 under aerobic conditions.
300 $a 105 p.
500 $a Adviser: Juan L. Silva.
500 $a Source: Masters Abstracts International, Volume: 45-02, page: 0689.
502 $a Thesis (M.S.)--Mississippi State University, 2006.
520 $a A bifidobacteria mix (nine strains) was evaluated for its effect on the growth and survival of Escherichia coli O157:H7 (ATCC 43890) in 11% NFDM and MRS broth under the optimum growth conditions for E. coli O157:H7 growth (37°C, aerobic). Preliminary experiments were conducted to obtain the growth curves of the 9 strains of bifidobacteria and E. coli O157:H7 and confirm the inhibitory effect of acidity on E. coli O157:H7 (pH of media adjusted to 3.8). Acid-adapted E. coli O157:H7 showed no difference in resistance toward bifidobacteria (P>0.05) when compared to the non-acid adapted one. Escherichia coli O157:H7 did not survive in the supernatant of the bifidobacteria mix collected after incubation (37°C) with aerobic shaking (8 h). However, the pathogen was able to grow after the pH of the supernatant was adjusted to 6.50 (pH of fresh MRS broth). Results suggest that a high content of bifidobacteria has a strong inhibitory effect on E. coli O157:H7, in part due to the low pH. However, products from bifidobacteria may also exert inhibitory effects.
590 $a School code: 0132.
650 4 $a Agriculture, Food Science and Technology. $3 1017813
650 4 $a Biology, Microbiology. $3 1017734
650 4 $a Chemistry, Agricultural. $3 1021829
690 $a 0359
690 $a 0410
690 $a 0749
710 2 0 $a Mississippi State University. $3 1017550
773 0 $t Masters Abstracts International $g 45-02.
790 $a 0132
790 1 0 $a Silva, Juan L., $e advisor
791 $a M.S.
792 $a 2006
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1438715