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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.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	Evaluation of the antimicrobial activity of a bifidobacteria mix against Escherichia coli O157:H7 under aerobic conditions./
作者:	Wang, Chenbo.
面頁冊數:	105 p.
附註:	Adviser: Juan L. Silva.
Contained By:	Masters Abstracts International45-02.
標題:	Agriculture, Food Science and Technology. -
電子資源:	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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