본 연구는 절화 수국 ‘Ruby’의 보존화 가공 시 탈수 및 탈색 시간과 보존및 착색 적정 조건을 구명하고자 실 시하였다. 탈수 및 탈색의 적정 처리 시간은 18 ~ 24시 간으로 판단되었으며, 24시간 후부터 무게가 감소하고 Hunter value a 값이 낮게 조사되었다. 24시간 처리의 Hunter value a 값은 0.94로 0시간 보다 낮게 조사되었으 며, 36시간 처리는 꽃잎의 갈변 현상이 나타났다. 보존 및 착색 처리 결과, 관능평가에서 Solution II와 Black 염료 처리한 보존화가 65%로 가장 높은 선호도를 받았으며, Solution II, Red 6.7mL + Yellow 6.7mL+ Blue 6.7mL + Black 10mL 처리와 Red 5mL + Yellow 5mL + Blue 5mL + Black 15mL 처리가 각각 25%, 10%의 선호도를 받았다. 또한, Solution I은 건조과정 중 형태변형이 나 타나 Solution II의 형태유지성, 유연성, 질감이 Solution I(제작용액)에 비해 다소 높게 조사되었다. 그에 반해, Solution I의 색상재현성은 다른 처리보다 높은 점수를 받 았으며, Hunter value L 값도 15.33으로 가장 낮게 조사 되었다. 따라서, Solution II(시판용액)가 절화 수국의 보존 화 가공 시 적정 처리인 것으로 조사되었으며, 색 재현성 을 위해 검정색 표현을 위해 Black 염료 단독처리가 효과적인 것으로 판단된다.

This study was carried out to examine the several factors that influence optimum preservation conditioning on Hydrangea macrophylla ‘Ruby’ after cutting, including the dehydration and decoloring time. 18~24 hours duration was determined as the proper treatment time that conditioned dehydration and decoloring after cutting. Placing cut hydrangea in 95% ethanol for 24 hours, its weight and hunter value a were reduced. Hunter value a of 24 hours was 0.94, which was lower than 33.00, the control value at 0 hours. In addition, hunter value b when treated for 36 hours reached the maximum value, 2.80 because of petal browning. According to the scoring test concerning the degree to which the cut flowers were preserved, solution II consisting of a commercial floral preservative colored with black dye was able to keep 65% of the subjects fresh, which was the maximum preservation rate. Meanwhile, solution II mixed with several dyes including Red 6.7 mL + Yellow 6.7 mL + Blue 6.7 mL + Black 10 mL, and solution II including Red 5 mL + Yellow 5 mL + Blue 5 mL + Black 15 mL has led to 25%, 10% preservation rate, respectively. Furthermore, the characteristics of solution II which retained shape, flexibility and texture of flower were higher than the ones of solution I because solution I (made of 25 mL • L−1 glycol) caused a slight change in flower shape during the drying process. Nevertheless, solution I mixed with black dye showed the highest value of color reproducibility compared to other treatments, and Hunter value L of solution I was the lowest, 15.33 as well. Therefore, optimal treatment that kept cut hydrangea fresh was solution II preservative method, and black coloring treatment effectively dyed the subjects black.

• 오상임(단국대학교 생명자원과학대학 환경원예학과) | Sang Im Oh
• 윤지원(단국대학교 생명자원과학대학 환경원예학과) | Ji Won Yoon
• 이자희(단국대학교 생명자원과학대학 환경원예학과) | Ja Hee Lee
• 강민정(단국대학교 생명자원과학대학 환경원예학과) | Min Jung Kang
• 이애경(단국대학교 생명자원과학대학 환경원예학과) | Ae Kyung Lee Corresponding author