제목

분말김치 저장 중 젖산균 생육에 대한
동결건조보호제 첨가 효과

요약

This study was conducted to evaluate effect of adding cryoprotectant agents on the growth of lactic acid bacteria during storage of powdered Kimchi. Powdered Kimchi was prepared by adding 1.5% cryoprotectant (glucose, maltose, lactose, and sucrose) and freeze-dried. For the preparation of micro-sized particle of Kimchi powder, the freeze-dried Kimchi was powered at 14,000 rpm for 2 min. The survival ratio of lactic acid bacteria in the powdered Kimchi was monitored during storage period of 4 months at -20, 0, 4, and 25℃ after the capsulation of the powedered Kimchi. The number of lactic acid bacteria in the powdered Kimchi capsule was the greatest stored at -20℃, and the addition of glucose in cryoprotectant showed higher survival rate of lactic acid bacteria than that of control. More than 107 CFU/g of lactic acid bacteria were survived in the powdered Kimchi stored at 0 and 4℃. However, the lactic acid bacteria were not detected in the powdered Kimchi stored at 25℃. As a results, the addition of cryoprotectant agents in the manufacturing process improved the survival rate of lactic acid bacteria in powered Kimchi products with accompanying with a cold-chain system for the distributon of powdered Kimchi products.