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Appl. Environ. Microbiol., 02 1995, 501-506, Vol 61, No. 2
S Teraguchi, K Shin, K Ozawa, S Nakamura, Y Fukuwatari, S Tsuyuki, H Namihira and S Shimamura
When milk-fed mice were orally inoculated with Clostridium ramosum C1, this
strain proliferated in the gut and became the dominant component of the
fecal microflora. In this experimental model, bovine lactoferrin (bLF)
administered with milk suppressed the proliferation of this strain in vivo
and decreased the numbers of C. ramosum and other bacteria in the feces.
This bacteriostatic effect of bLF was dependent on the concentration of
bLF, the duration of feeding, and the administered dose of C. ramosum C1.
Compared with bovine serum albumin, ovalbumin, bovine whey protein isolate,
or bovine casein, only bLF showed this specific activity. A similar effect
of bLF was observed after oral inoculation with C. ramosum JCM 1298, C.
paraputrificum VPI 6372, or C. perfringens ATCC 13124. A hydrolysate
prepared by digestion of bLF with porcine pepsin showed the same inhibitory
effect on proliferation of C. ramosum in vivo as occurred with undigested
bLF. These results indicate that ingested bLF can exert a bacteriostatic
effect against clostridia in the gut even after it has been digested to
some extent.
Copyright © 1995, American Society for Microbiology
Bacteriostatic effect of orally administered bovine lactoferrin on proliferation of Clostridium species in the gut of mice fed bovine milk
Nutritional Science Laboratory, Morinaga Milk Industry Co., Ltd., Kanagawa, Japan.
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