Analysis on Hazard Microorganisms in Raw Materials and Processing Environment for Sunsik Manufacture

Cereals are the main raw material for sunsik manufacture. As the fundamental processing step, it is very important to confirm the level of the microorganism contamination in the cereals. This study was carried out a micrbiological screening of cereal samples for sunsik from 19 companies located in South Korea. Ten kinds of cereals which were glutinous rice, barley, brownrice, blackbean, blackrice, blacksesame, sorghum, millet, perilla seed, and adlay were investigated. As the results, the contaminations of general bacterial were 3.1~8.6 log(CFU/g). The results of Escherichia coli were 1.0~3.4 log(CFU/g). There was no contamination of Salmonella. spp in any cereal samples except black sesame and mold was detected in barley. The experiment for microbiological contamination during sunsik processing was also investigated in this study. The results of general bacteria were detected as 5.1~8.5, 4.4~7.5, 1.0~2.3, 2.4~4.2, 1.0~4.0, 3.4~4.2, 4.3~5.2, and 3.3~5.5 log(CFU/g) during environment of warehousing, washing, steaming, 1st cooling, drying, 2nd cooling, grinding, and packaging process, respectively. The results of coliform were 1.0~2.0 log(CFU/g) during warehousing respectively. Mold was found in warehousing. In case of the instruments, the contaminations of general bacterial were 4.2~7.5, 0.1~2.0, 0.1~3.2, 3.7~4.0, 2.5~3.0, and 3.8~5.2 log(CFU/g) in cereals tanks, washing machines, grinding machines, packaging machines, and workrooms. The results of coliform were 2.4~4.0, 0.0~4.1 log(CFU/g) in cereals tanks and grinding machines, respectively. Mold were only found in cereals tanks, grinding machines, and workings. Therefore, the risk of hazard microorganisms contmination might be decrased as the exhaustive management is applied to the whole sunsik process.

선식용 곡류원료 및 제조공정에 따른 유해미생물 오염도 분석

선식의 품질향상과 위생적인 선식제조에 기초단계인 곡류원료에 위생 상태를 파악하기 위해 선식업체 19곳을 방문하여 선식용 곡류원료 10종류에 대한 일반생균수는 찹쌀 4.8~7.2, 보리 4.8~8.6, 현미 4.6~7.4, 검정콩 4.3~7.1, 검정쌀 4.1~7.1, 검정깨 4.1~6.1, 찰수수 3.1~5.1, 찰조 4.2~5.1, 들깨 3.1~5.1, 율무 3.6~5.2 log(CFU/g)로 검출되었고, Coliform, E. coli은 찹쌀 4.4~2.1, 2.1~3.4, 보리 2.2~4.4, 2.1~3.1, 현미 3.1~3.2, 1.0~2.8, 검정콩 2.3~3.8, 검정쌀 2.1~3.1, 1.0~2.1, 검정깨 2.3~3.6, 찰수수 2.2~2.4, 찰조 2.3~3.2, 들깨 2.3~3.1, 1.0~2.1, 율무 2.2~3.2, 1.0~2.1 log(CFU/g)검출되었으며, B. cereus은 찹쌀 1.0~2.1, 보리 2.1~3.1, 현미 2.4~2.6, 검정쌀 2.1~3.5, 들깨 1.0~2.1 log(CFU/g)로 검출되었다. Sal. spp은 검정깨에서 검출되었고, mold는 보리에서 검출되었다. 제조공정 중 미생물 오염도에 대해 조사한 결과 일반생균수는 입고단계의 경우 5.1~8.5 log(CFU/g)로 검출되었고, 세척 및 증자 공정은 4.4~7.5, 1.0~2.3 log(CFU/g)로 검출되었으며, 냉각, 건조, 방냉, 마쇄, 포장공정에서는 2.4~4.2, 1.0~4.0, 3.4~4.2, 4.3~5.2, 3.3~5.8로 검출되었다. 대장균군는 입고공정에서 1.0~2.01 (CFU/g)로 검출되었고, mold은 입고단계에서 검출되었다. 선식 가공업체의 환경 중 미생 물 결과 일반생균수는 원료탱크 40.2~7.5(CFU/g), 세척기와 건조기는 0.1~2.0, 0.1~3.2(CFU/g)로 검출되었고, 분쇄기, 포장지, 작업실은 3.2~4.0, 2.5~3.0, 3.8~5.2로 검출되었으며, 대장균군은 원료탱크와 분쇄기에서 각각 2.4~4.0, 0.0~4.1 log(CFU/g) 검출되었으며, 대장균은 검출되지 않았다. Mold은 원료탱크와 분쇄기, 작업실에서 검출되었다.