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보문 : Aspergillus oryzae를 이용한 배 착즙박 누룩의 제조 및 막 걸리 발효특성
신자원 ( Ja Won Shin ),김영헌 ( Young Hun Kim ),김재호 ( Jae Ho Kim ),나광출 ( Kwang Chul Na ),이종수 ( Jong Soo Lee ) 한국균학회 2013 韓國菌學會誌 Vol.41 No.4
In order to develop new valuable pear marc nuruk and further, reduce environmental pollution by pear marc from pear juice processing, we prepared pear marc nuruk by incubation of Aspergillus oryzae into pear marc containing 50% of moisture at 30oC for 7 days. α-Amylase and glucoamylase activities of the pear marc nuruk were 320.2 IU and 442.8 IU, respectively and its acidic protease activity was showed 142.6 IU. After brewed makgeolli by using the pear marc nuruk, cooked rice and Saccharmyces cerevisiae, its physicochemical characteristics was investigated. Ethanol content of pear marc nurukmakgeolli was 6.8% after fermentation at 25oC for 10 days and also pear marc makgeolli showed 45.6% of antihypertensive angiotensin I-converting enzyme (ACE) inhibitory activity. In conclusion, pear marc nuruk had high amylase activity and pear marc-makgeolli had also good fermentation characteristics and antihypertensive ACE inhibitory activity. Therefore, it has the potential to become a new nuruk for brewing makgeolli.
김경희,조양자,서인수,김재호 대한미생물학회 1987 大韓微生物學會誌 Vol.22 No.2
To determine the prevalence of antibiotic resistance in fecal I:. Coli and to investigate possible associations between antibiotic resistance and other plasmid-mediated virulence properties, antibiotic disk susceptibility tests for nine antibiotics were done on 141 strains of E. coli isolated from diarrheal children and well controls. Eighty two percent of the test strains were resistant to one or more antihiotics. Antibiotics which the test strains were most resistant in descending order were ampicillin (85%), trimethoprim/sulfamethoxazol (60%), and cephalothin (55%). Seventy nine percent of these resistant strains were resistant to two or more antibiotics. All 141 test strains were sorted into enteroto- xigenic E coli (ETEC), enteropathogenic I'. Coli (EPEC), eteroadherent E. coli (EAEC) and non-pa- thogenic E. Coli and the percentages of strains resistant to multiple antibiotics were compared. Arnong ETEC regard1ess of its source, multiple drug resistance was more frequent in strains producing heat-stable enterotoxin (ST) only than in strains producing only heat-labile enterotoxin (LT) or both. In EAEC, multiple resistance was more frequently associated with strains isolated from diarrheal patients than with those from well controls. The major antibiotic resistance patterns possessed by multiple resistant enteropathogenic strains were SXT^R AM^R, CR^R, and SXT^R AM CR^R. Of 28 ST-producing SXT^R BTEC, 26(96%) were also resistant to ampicillin and 17 (61%) were resistant to cephalothin. The similar pattern was observed in EAEC and EPEC as well. This study has important implications for the treatment of E. coh diarrhea with antibiotics because it is possib1e that dissemination of virulence could occur under the force of seleetive antibiotic pressure. In addition, this study suggests that the in vivo efficacy of SXT in treating diarrheal illness be reevaluated.