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从保藏的芽孢杆菌中筛选到产蛋白酶且抑制肠道细菌的美丽短芽孢杆菌Brevibacillus formosus FJAT-10011,研究该菌株发酵上清液的蛋白酶酶学性质以及抑菌性质.结果表明,上清液中蛋白酶的最适反应温度为40℃,最适pH为6.0.此外,在pH5.0~9.0、低于40℃的范围内酶稳定性较高.发酵上清液中拮抗大肠杆菌的抑菌物质具有高的热稳定性,80℃处理30 min后抑菌活性仅降低20%.在pH6.0~8.0的范围内抑菌物质稳定性相对较高,且对蛋白酶K、胃蛋白酶及胰蛋白酶不敏感.除肠道细菌外,FJAT-10011还能显著抑制尖孢镰刀菌Fusarium oxysporum,其效果相当于1 mg·mL-1的潮霉素.
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福建农业学报
ISSN: 1008-0384
CN: 35-1195/S
Year: 2015
Issue: 12
Volume: 30
Page: 1184-1192
Cited Count:
WoS CC Cited Count: 0
SCOPUS Cited Count:
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count: -1
Chinese Cited Count:
30 Days PV: 1
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