전기분해수 처리에 의한 딸기의 살균 효과 및 저장 중 품질변화
Disinfection Effects of Electrolyzed Water on Strawberry and Quality Changes during Storage
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전해 방식에 따라 제조된 전기분해수로 세정처리한 딸기의 살균효과 및 저장중 품질변화를 살펴본 결과, 전기분해수에 의한 딸기의 미생물학적 살균효과는 침지수량은 중량대비 10배수, 침지시간은 20분 처리시 초기균수에 대하여 2 log cycle 정도 감소하며 저장중 균증식 속도도 다소 느리게 나타났다. 폐기율은 5℃ 저장시 EW-2 처리구에서 저장 5일째까지 10% 수준을 보여 무처리 및 염소수 처리에 비해 낮은 폐기율을 보여주었고, 조직감도 5℃ 저장 전기분해수 처리구에서는 저장 3일까지는 조직감 변화가 거의 없다가 그 이후 오히려 증가하는 경향을 나타내었다. 딸기의 표면색도 변화는 저장기간이 경과할 수록 무처리구와 CW 처리구는 전반적으로 L값이 증가하는 경향을 보인 반면에 전기분해수 처리구는 감소하는 경향을 보여 주었고, 저장기간별 색차(△E)값은 저장 3일까지는 무처리구가 가장 적은 변화를 나타내었다. 전기분해수 처리에 의한 초기 잔류염소량은 0.04～0.06ppm 수준이며 저장 1-3일 경과 후에는 모든 처리구에서 0.02～0.03ppm 수준으로 잔류염소량이 거의 동일하게 나타났다. 저장중 관능적 특성은 전기분해수 처리구(EW-1 및 EW-2)가 무처리 및 CW 처리구에 비해 높게 나타났다.
Abstract
Disinfection of electrolyzed water (EW) on strawberry by immersion washing and quality changes during storage at 5℃ was compared with one immersed in chlorine water and not treated. Total count of strawberry washed with EW by immersion in 10 volumes of EW for 20min was decreased to about 2 log cycle compared to the untreated. And rate of microbial growth during storage was lower than others. Decaying ratio in strawberry treated with electrolyzed low-alkalinewater (EW-2) showed lower as of 10% level after 5 days of storage compared) to the untreated and the treated with chlorine water (CW). Hardness in the treatment of EW was not changed significantly until 3 days of storage, after then rather increased. Change in surface color of strawberries was observed; L value in the CW treated and the untreated increased whereas it decreased in the treatment of EW. And color difference(△E) during storage was observed the lowest in the untreated until 3 days of storage. The initial value of residual chlorine in the treatment of EW was at the level of 0.04~0.06ppm, and 1~3 days later, showed almost the equal value to level of 0.02~0.03ppm in all treatments. Sensory characteristic during storage was preferable on strawberry washed with EW (EW-1 and EW-2) to the other treatments.
참고문헌 (18)
- "저온처리 전해산화수를 이용한 과채류의 선도유지 기술개발.", pp.17~21 (1999)
- "과채류의 표면살균 기술개발.", pp.87~104 (1996)
- "Microbial contamination levels of fresh vegetables distribution in markets.", 20, pp.43~47 (2005)
- "Microbial population dynamics in ready-to-use vegetable salads. Ital. J. Food Sci. 2", pp.97~108 (1992)
- "Microbiological spoilage and pathogens in minimally processed refrigerated fruits and vegetables. in minimally processed refrigerated fruits and vegetables", pp.269~312 (1994)
- "Bacteriological survey on ready-to-use sliced carrots. Lebensm.-Wiss. Technol. 27", pp.487~490 (1994)
- "Effect of storage condition on the quality and microbiological changes of strawberry "Minyunbond" during storage", 11, pp.7~11 (2004)
- "Modified atmosphere packaging of fresh strawberries by antimicrobial plastic films.", 30, pp.1140~1145 (1998)
- "Effects of gamma irradiation and cooking methods on the contents of thiamin in chicken breast and vitamin C in strawberry and mandarine orange.", 32, pp.864~869 (2003)
- "Effect of antimicrobial packaging films on the keeping quality of strawberries.", 2, pp.157~161 (1998)
- "Preservation of strawberries and cucumbers packaged by low density polyethylene film impregnated with antimicrobial agent, 98FB98;color:#000000; Filter:Alpha(opacity=40);> Scutellariae baicalensis extract.", 9, pp.271~276 (2002)
- "Postharvest heat treatment on spanish strawberry (Fragaria xananassa Cv. Tudla) .", 43, pp.1489~1492 (1995)
- "Changes in strawberry anthocyanins and other polyphenols in response to carbon dioxide treatments.", 45, pp.1662~1667 (1997)
- "Application of electrolyzed-oxidizing water on food processing. Shokuhin Kagyo Gisyus", 14, pp.332~338 (1994)
- "Electrolyzed NaCl solution in food industry.", 33, pp.10~14 (1998)
- "Fundamental properties of electrolyzed water.", 47, pp.390~393 (2000)
- "Postharvest physiology and quality of cilantroCoriandrum sativum L.).", 32, pp.104~107 (1997)
- "Physico-chemical properties of electrolyzed functional water and its application.", 3, pp.18~22 (1999)