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• W843083739 abstract "항생제 대체물질로서 가축용 생균제를 개발하기 위하여, 오리의 소장 및 맹장으로부터 416주의 미생물을 분리하였으며, 항균물질인 박테리오신을 생산하는 13주를 최종적으로 선발하였다. 선발균주들은 Lactobacillus salivarius 1주, Lactobacillus plantarum 1주, Pediococcus pentosaceus 1주, Enterococcus 7주, 그리고 3주의 E. coli로 동정되었으며, 복합생균제를 제조할 목적으로 상기 균주중 5균주에 대한 박테리오신 및 생균제적인 특성를 조사하였다. 유산균인 Lact. salivarius JWS 58, Ent. faecium JWS 833, 그리고 Ped. pentosaceus JWS 939는 식품관련 병원성 균주로 알려진 Listeria mono- cytogenes에 대하여 강한 항균능력을 나타냈으며, 상기 균주의 cell-free supernatant를 단백질 분해효소 처리시 대부분이 병원균 억제활성을 상실하였다. 선발균주인 E. coli JWS 108은 그람음성균주인 E. coli와 Staphylococcus aureus 균주에 대한 생육억제활성을 나타냈다. 또한 Lact. salivarius JWS 58균주와 Ent. faecium JWS 833균주는 각각 Lactobacillus sp. 및 Enterococcus sp. 균주에 대하여 억제활성을 지니고 있었다. Lact. salivarius JWS 58균주는 pH 2.5 완충용액에서 2시간 동안 50% 이상 생존하였으며, pH 2.0 이하에서는 대부분의 선발균주들이 사멸하였다. 그러나 선발균주 모두 0.5% 담즙산 농도까지 아무런 억제현상없이 정상적으로 성장하였다. Ped. pentosaceus JWS 939와 Lact. plantarum JWS 1354 균주는 상대적으로 높은 amylase와 cellulase 효소 활성를 나타냈으며, E. coli JWS 108 균주는 낮은 효소활성을 보였다. Protease 및 lipase 효소 활성은 5균주 모두 유사하게 나타내었다. The aim of this study was to isolate and characterize bacteriocin-producing bacteria from the intestine of duck to use as probiotics for livestock. A total of 416 strains were isolated from the small intestine and cecum of ducks and 13 isolates were finally selected after determinging inhibitory activity against pathogenic indicators by spot-on-lawn method. The selected strains were identified as Lactobacillus salivarius JWS 58, Lactobacillus plantarum JWS 1354, Pediococcus pentosaceus JWS 939, 7 strains of enterococci, and 3 strains of Escherichia coli. Lact. salivarius JWS 58, Ent. faecium JWS 833, and Ped. pentosaceus JWS 939 showed a strong inhibitory activity against Listeria monocytogenes. E. coli JWS 108 inhibited the growth of E. coli and Staphylococcus aureus. Lact. salivarius JWS 58 strain survived almost 50% in pH 2.5 phosphate buffer for 2 hr. Ped. pentosaceus JWS 939 and Lact. plantarum JWS 1354 showed strong amylolytic activity. These results suggest that a combination of bacteriocins or multispecies probiotics of the selected strains has a strong potential of alternative to antibiotics in livestock production." @default.
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• W843083739 date "2007-10-31" @default.
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• W843083739 title "Isolation and Characteristics of Bacteriocin-producing Bacteria from the Intestine of Duck for Probiotics" @default.
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• W843083739 doi "https://doi.org/10.5187/jast.2007.49.5.621" @default.
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