We stored sweet pumpkins at 8℃, 12℃, 12℃ plasma curing and room temperature (control) for 180 days. During this time, the quality characteristics were analyzed within the different groups. No spoiling occurred in either of the storage conditions for up to 120 days, and the marketability was good. After 120 days, spoiling sharply increased by over 70% in the control group, while in the 12℃ group it decreased to 20~60%. Conversely, spoiling was completely absent in the 8℃ and 12℃ plasma curing groups during the overall 180 days of storage. The lowest moisture content was found in the 8℃ group and the quality of the pumpkins was excellent during the entire storage period. The color of pulp was better in the 12℃ and 12℃ plasma curing groups, with best results were found in the latest. Both the 8℃ and 12℃ plasma curing groups maintained their dark green surface colors, while both the 12℃ and control groups turned from green to yellow. All groups showed a reduction in their initial hardness, with the 8℃ group staying the hardest. Soluble solid and mealiness was increased to the storage during 90 days while decreased, that were long to maintain the mealiness texture in the 8℃ storage pumpkin. The overall acceptability from sensory evaluation was higher in the 12℃ plasma curing group, when compared to those of the 8℃, 12℃ and control groups storage conditions.

본 연구에서는 붉은보우짱, 미니홍, 미니골드, 보우짱단 호박, 한국산약호박 5품종의 영양성분을 비교 분석하여 호박의 이용 확대와 다양한 활용을 위한 기초 자료를 마련하고자 하였다. 품종별 영양성분 비교를 위해 일반성분 7종(탄수화물, 수분, 단백질, 지방, 회분, 에너지, 식이섬유), 무기질 5종(칼슘, 인, 철, 나트륨, 인), 비타민 6종(카로티노이드, 비타민 C, 티아민, 리보플라민, 나이아신, 엽산)이 각각 분석되었다. 영양성분 함량은 시료 100 g 기준으로 환산하였으며 품종별 영양소의 절대량 비교를 위해 건물 중(dry weight basis)과 습물 중(wet weight basis) 함량을 각각 환산하였다. 일반성분 분석결과 호박 5품종의 수분함량은 74~87%, 조단백은 1.6~3.2 g/100 g, 탄수화물은 10.1~20.7 g/100 g, 총 식이섬유는 2.0~3.4 g/100 g으로 각각 분석되었다. 호박의 무기질 함량은 칼륨이 가장 높았고 철이 가장 낮은 것으로 나타났다. 호박은 카로티노이드 성분이 풍부한 것으로 알려져 있는데 카로티노이드 이성체(루테인, 제아크산틴, 베타크립토크산틴, 알파카로틴, 베타카로틴)를 각각 분석한 결과 총 카로티노이드 함량에 영향을 미치는 성분은 주로 루테인, 제아크산틴, 베타카로틴 성분으로 나타났다. 일반성분과 무기질에서는 품종 간 뚜렷한 함량 차이를 나타내지 않은 반면 카로티노이드의 경우 생물 100 g 당 34∼280μg 수준으로 품종에 따라 그 함량 차이가 크게 나타났으며 약호박에서 가장 높았고 미니골드에서 가장 낮은 수준을 나타냈다. 엽산의 함량은 습물 기준 100 g 당 26∼74μg 수준으로 분석되었는데 특히 약호박과 보우짱이 각각 74와 40μg 으로 높은 함량을 나타내었다. 호박의 일반성분과 무기질의 성분 변이는 뚜렷하지 않지만 비타민 특히, 베타카로틴의 함량이 품종 간 차이가 특이적으로 큰 것으로 나타났다. 본 연구 결과는 기능성 식품 소재연구, 호박품종 개량연구, 국가표준식품성분표 작성을 위한 기초 데이터베이스 연구에 활용 될 것으로 기대된다.

To determine the characteristics of four different sweet pumpkins (Minimam, Bojjang, Ajikuroi and Kurijiman), juices were made from these varieties. The carotenoids in the flesh were 1.5∼2 times higher than those in the skin and were highest in the flesh of the Minimam pumpkin among all the pumpkin varieties studied. The vitamin A contents were higher in the skin than in the flesh, and Minimam had the highest vitamin A content (2,016.57 IU/100 g) while Kurijiman had the lowest (998.83 IU/100 g). The vitamin C contents varied from 43.21 to 82.35 mg%, but there were no significant differences between the flesh and the skin. That of Kurijiman was the highest among the varieties studied. The major mineral of these varieties was potassium, which was highest in the flesh of Ajikuroi, followed by phosphorus. The antioxidant activities of the sweet pumpkin water extracts were higher in the skin than in the flesh. The EC50 of the Minimam skin was the highest (4.01 mg/mL), and that of the Ajikuroi flesh was the lowest. The sweet pumpkin juice yields were 69.5∼89.4%, with significant differences shown according to the variety. That of the peeled Ajikuroi's flesh was the highest. The pH was 7.17∼7.83, and the unpeeled sweet pumpkin's pH was higher than that of the peeled sweet pumpkin. The Brix degree was 12.5∼16.6 °Brix, with that of the unpeeled Bojjang being the highest(16.1 °Brix) and that of the unpeeled Ajikuroi the lowest (12.7 °Brix). The sweet pumpkin beverage made with pressed juice was adjusted by pH 3.5 with citric acid, and the Brix degree was maintained at the 12 °Brix with sugar. The adjusted beverage, which was the peeled pumpkin flesh juice, had suspension stability for a short time. The sweet pumpkin beverage had a certain flovor and a slimy mouthfeel. Bojjang and Kurijiman were evaluated as the best in the terms of taste and color, but the peeled Minimam and Bojjang showed the best results overall.

전국에서 수집한 완숙과 호박의 중량은 대부분 4~8kg이었으며, '창녕 I', '횡성' 및 '장수' 품종은 과육의 중량이 10 kg 이상으로 비교적 크고 논산, 여주 및 삼척 지역에서 수집된 호박은 중량 2kg 이하로 작았다. 호박의 형태는 '보은'을 비롯한 12개 수집종이 편원형을, '탕녕II'를 비롯한 5개 수집종이 원형을, 나머지는 장타원형이었다. 가용성 고형물은 '삼척' 호박이 14.4 。Brix로 가장 높았으며, '합천'과 '임실'도 1