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Quality Characteristics of the Flesh and Juice for Different Varieties of Sweet Pumpkins

단호박의 품종에 따른 과육 및 착즙액의 품질 특성

  • Kim, Mi-Hyang (Aram Co, Ltd.) ;
  • Lee, Woo-Moon (Vegetable Research Division, National Institute of Horticultural & Herbal Science, RDA) ;
  • Lee, Hee-Ju (Vegetable Research Division, National Institute of Horticultural & Herbal Science, RDA) ;
  • Park, Dong-Kum (Vegetable Research Division, National Institute of Horticultural & Herbal Science, RDA) ;
  • Lee, Myung-Hee (Dept. of Bio Food Science, Kyongbuk Collage of Science) ;
  • Youn, Sun-Joo (Aram Co, Ltd.)
  • Received : 2012.07.24
  • Accepted : 2012.09.28
  • Published : 2012.10.30

Abstract

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 $EC_{50}$ 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 $12.5{\sim}16.6^{\circ}Brix$, with that of the unpeeled Bojjang being the highest($16.1^{\circ}Brix$) and that of the unpeeled Ajikuroi the lowest ($12.7^{\circ}Brix$). 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 $12^{\circ}Brix$ 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.

본 연구에서는 단호박 품종 4종(미나맘, 보짱, 아지구로이, 구리지망)의 특징을 살펴보고, 이를 이용한 음료의 기본적인 특징을 살펴보았다. 카로티노이드는 과피 보다 과육에 1.5~2배의 높았으며 4품종 중 미니맘 과육에 가장 높은 함량을 보였다. 비타민 A는 과육에서 보다 과피에서 높은 함량을 보였으며, 미니맘 과피가 2,016.57 IU/100 g으로 가장 높고, 구리지망 과육이 998.83 IU/100 g으로 가장 낮았다. 비타민 C의 함량은 43.21~82.35 mg% 수준으로 과육과 과피에서 비슷한 수준의 함량을 보여 유의적인 차이는 없는 것으로 나타났으며, 구리지망 품종이 높은 것으로 나타났다. 단호박의 무기질 함량은 칼륨이 가장 높았으며 다음으로 인의 순이었으며, 아지구로이의 과육에 칼륨 함량이 가장 높은 것으로 나타났다. 과육과 과피 물 추출물의 항산화 활성은 과육보다 과피에서 활성이 높은 것으로 나타났으며 미니맘 과피의 $EC_{50}$이 4.01 mg/mL로 가장 활성이 높았으며, 아지구로이 과육의 활성이 가장 낮은 것으로 나타났다. 착즙 수율은 69.5~89.4% 수준으로 품종에 따른 착즙 수율에 유의적인 차이가 있는 것으로 나타났으며, 아지구로이가 가장 높았다. 착즙액의 pH는 7.17~7.83으로 박피하지 않은 단호박이 박피 과육을 이용한 것보다 높았다. 당도는 $12.5{\sim}16.6^{\circ}brix$로 보짱이 $16.1^{\circ}brix$로 가장 높았고 아지구로이가 $12.7^{\circ}brix$로 가장 낮은 것으로 나타났다. 착즙액으로 단맛과 pH를 조정한 단호박 음료는 박피 과육을 사용한 경우 단기간 부유 안정성을 나타내었다. 단호박 음료는 특유의 향과 약간의 미끈거리는 질감이 있었으며, 색상 기호도는 보짱과 아지구로이가 좋은 것으로 평가하였다. 종합적인 맛 평가에서는 미니맘과 보짱이 좋은 결과를 보였다.

Keywords

References

  1. Hidaka T, Annno T, Nakatsu S (1987) The composition and vitamin A values of the carotenoid of sweet pumpkins of different colors. J Food Biochem, 11, 59-64 https://doi.org/10.1111/j.1745-4514.1987.tb00112.x
  2. Cumarasamy R, Corriggan V, Hurst P, Bendall M (2002) cultivar differences in New Zealand 'kabocha'(buttercup squash, Cucubita maxima). New Zealand J Crop Hort Sci, 30, 197-208 https://doi.org/10.1080/01140671.2002.9514215
  3. Han JS, Chung MC, Kim SR (2007) Effects of storage conditions on qualities of buttercup Squash (Kabocha). Korean J Food Sci Thechnol, 39, 644-651
  4. Manseka VD (1997) Weight loss and other physiological aspects of butternut squash: The effect of pre-storage and storage conditions and price variation of winter squash at northeast wholesale market. PhD thesis. Cornell Univ, ltaca, NY, USA
  5. Osuna CJ, Carrillo LA, Bedollo VS (1995) Hydrothermal treatment of kabocha squashes for control of weight loss and spoilage. Thechnologia de Alimentos, 30, 18-21
  6. Kim SR, Ha TY, Kim YS, Park YK (2005) Comparison of nutritional composition and antioxidant activity for kabocha squash and pumpkin. Korean J Food Sci Thechnol, 37, 171-177
  7. Heo SJ, Kim JH, Kim JK, Moon KD (1998) Processing of purees from pumpkin and sweet-pumpkin. Korean J Food Presery, 5, 172-176
  8. Jung GT, Ju IO, Choi JS (2001) Preparation and quality of instant gruel using pumpkin (Cucurbita maxima Duch var. Evis). Korean J Food Presery, 8, 74-78
  9. Park HK, Yim SK, Sohn KH, Kim HJ (2001) Preparation of semi-solid Infant foods using sweet-pumpkin. J Korean Soc Food Sci Nutr, 30, 1108-1114
  10. Park ID (2012) Effects of sweet pumpkin powder on quality characteristics of cookies. Korean J Food Culture, 27, 89-94 https://doi.org/10.7318/KJFC.2012.27.1.089
  11. Yoon SJ (1999) Sensory and quality characteristics of pumpkin rice cake prepared with different amounts of pumpkin. Korean J Food Cookery Sci, 15, 586-590
  12. Song HY, Kim SR, Rho JH (2005) Preparation of kobacha squash nectar and its quality characteristics during storage. Korean J Food Cookery Sci, 21, 176-781
  13. AOAC (1990) Official Methods of Analysis. 15th ed, Association Official Analytical Chemists, Washington DC, USA
  14. Blois MS (1958) Antioxidant activity determination by use of stable free radical. Nature 181, 1199-1200 https://doi.org/10.1038/1811199a0
  15. Burton, GW, Ingold GW (1984) $\beta$-carotene: Unusual type of lipid antioxidant Science, 224, 56-63 https://doi.org/10.1126/science.224.4644.56
  16. Krinsky NI, Deneke SM (1982) Interaction of oxygen and oxy-radicals with carotenoids. J Nat Cancer Inst, 69, 205-210
  17. Peto R, Doll R, Buckley ID, Sporn MB (1981) Can dietary beta-carotene materially reduce human cancer rates. Nature, 290, 201-208 https://doi.org/10.1038/290201a0
  18. Whang HJ (1999) The change of carotenoid pigment in Korean pumpkin using drying. Food Eng prog, 13, 214-219
  19. The Korea Nutrition Society (2005) Dietary reference intakes for Koreans. The Korea Nutrition Society. Seoul, Korea, p 83-91
  20. Hong JH, Lee WY (2004) Quality characteristics of osmotic dehydrated sweet pumpkin by different drying methods. J Korean Soc Food Sci, 33, 1573-1579 https://doi.org/10.3746/jkfn.2004.33.9.1573
  21. Heo SJ, Kim JH, Kim JK, Moon KD (1998) The comparison of food constituents in pumpkin and sweet-pumpkin. Korean J Dietary Culture, 13, 92-96
  22. Jeong KY, Kim MY, Chun SS (2008) Quality characteristics of Sulgidduk with concentrated sweet pumpkin powder. Korean J Food Cookery Sci, 24, 849-855
  23. Chung HS, Kim HS, Lee YG, Seong JH (2010) Effects of freezing pretreatment on juice expression and drying characteristics of prunus mume fruit. Korean J Food Persery, 17, 507-512
  24. Jeon JY, Choi SH (2010) Volatile flavor components in a mixed tea of sweet pumpkin (Cucurbita spp.) and green tea. J Korean Tea Soc, 16, 124-128

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