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논문 상세정보

메밀 새싹채소의 주요 내재미생물 분석 및 염소처리에 따른 품질변화

Microbiological Characterization and Chlorine Treatment of Buckwheat Sprouts

초록

친환경 기능성 채소로서 시장수요가 증가하고 있는 고품질 새싹채소의 수확 후 미생물 안전관리와 품질유지 유통기술을 개발하고자 메밀 새싹의 내재미생물을 검지하고 살균소독제로서 차아염소산나트륨의 적용 농도별 미생물 억제효과를 살펴보았다. 그 결과, 메밀 새싹의 주요 내재미생물 균총은 Enterobacter, Sphingomonas, Klebsiella 등이 대부분으로 $10^5-10^7$ CFU/g 수준이었으며, 그 종류는 종자 자체의 내재미생물과 유사하였고, E. coli O157:H7, Sal. Typhimurium, L. monocytogenes 등의 병원균은 검출되지 않았다. 50-150 ppm의 차아염소산염 용액으로 처리한 메밀 새싹의 생균수는 무처리구에 비해 약 1 log cycle 이상 감소하였으나 적용농도에 따른 차이는 유의적이지 않았다. 저온저장 7일 후 관능평가에서 100 ppm 이상의 염소수처리 새싹이 상대적으로 우수하게 평가되어 적정 농도의 염소수처리가 메밀 새싹채소의 미생물 억제 및 외관품질 유지에 긍정적인 효과를 나타내는 것으로 확인되었다.

Abstract

In order to secure microbiological safety and quality of commercial vegetable sprouts, buckwheat seeds and sprouts were investigated for their microbiological flora and for the effect of chlorine treatment on quality. Microbiological analyses showed that major inherent bacteria including Enterobacter, Sphingomonas, and Klebsiella were found in commercial buckwheat sprouts with a population size ranging from $10^5$ to $10^7$ CFU/g. In addition, buckwheat seeds had a similar microbial flora to sprouts. Foodborne pathogenic bacteria such as Escherichia coli O157:H7, Staphylococcus aureus, Salmonella Typhimurium, and Listeria monocytogenes were not detected in the sprout or in the seed samples. Chlorine treatment with 50-150 ppm sodium hypochlorite noticeably reduced viable bacteria cell counts of the sprouts by about 1 log. However, no significant difference was observed among the different chlorine concentrations. After storage for 7 days at $5^{\circ}C$, the sprouts treated with 100-150 ppm chlorine showed higher sensory scores in visual quality than the others (p<0.05). The results indicated that proper pretreatment, such as dipping in chlorinated water, could confer a beneficial effect on the microbiological safety and visual quality of buckwheat sprouts.

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이 논문을 인용한 문헌 (2)

  1. Lee, Hyun-Hee ; Hong, Seok-In ; Kim, Dong-Man 2011. "Effect of Postharvest Treatments on Storage Quality of Buckwheat Sprouts" 한국식품과학회지 = Korean journal of food science and technology, 43(1): 98~104 
  2. 2014. "" Journal of biosystems engineering : JBE, 39(4): 318~323 

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