Journal of the Korean Society of Food Science and Nutrition (한국식품영양과학회지)

The Korean Society of Food Science and Nutrition (한국식품영양과학회)
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Effect of Cooking Methods on Elemental Composition of Pumpkin (Cucurbitaceae spp.)

호박류의 조리방법에 따른 무기질 성분의 변화

  • 홍영신 (조선대학교 식품영양학과) ;
  • 김경수 (조선대학교 식품영양학과)
  • Received : 2017.08.17
  • Accepted : 2017.10.02
  • Published : 2017.10.31
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Abstract

This study was designed to determine the effects of three cooking methods, boiling, microwave, and steaming, on elemental compositions of green pumpkin, zucchini, and sweet and ripened pumpkin. The cooking methods were carried out at 3, 5, and 10 min. The samples were then dried, crushed, and decomposed by microwave-assisted digestion method. Macro elements were analyzed by Inductively Coupled Plasma-Optical Emission Spectrometer (ICP-OES), whereas ICP-Mass Spectrometer (ICP-MS) was used for micro elements determination. From the results, macro elements were present in the order of K, P, Ca, Mg, S, Fe, Zn, and Na in all analyzed pumpkins. Among micro elements, Mn, Cu, Rb, and Ba, were present at high levels. For the effects of cooking methods, boiling significantly reduced the concentrations of elements. Cooking time affected concentrations of elements in the same manner with large differences between elemental contents in samples cooked for 5 and 10 min. Regarding micro elements contents, both effects were not significant. Similar elemental compositions with different concentration levels in all pumpkin types were observed. Green pumpkin and ripened pumpkin showed high retention rates of inorganic components upon steaming, and zucchini and sweet pumpkin showed high retention rates upon microwave cooking. Conclusively, cooking method and time affect amounts of residual inorganic ingredients in pumpkin.

본 연구는 애호박, 쥬키니, 단호박 및 늙은호박 조리방법에 따른 무기성분 변화를 확인하고자 하였다. 조리방법은 데치기, 전자레인지 및 찌기를 이용하였으며, 조리시간은 3분, 5분 및 10분으로 설정하였다. 설정된 시간에 따라 3가지 조리방법을 이용하여 조리한 후 건조하였다. 건조된 시료는 분쇄 후 microwave법을 이용하여 분해하였으며, 다량 무기성분은 ICP-OES로, 미량 무기성분은 ICP-MS를 이용하여 분석하였다. 4종의 호박에 함유된 다량 무기성분은 칼륨, 인, 칼슘, 마그네슘, 황, 철, 아연, 나트륨 순으로 확인되었으며, 미량 무기성분은 망간, 구리, 루비듐, 바륨, 니켈, 크롬, 갈륨, 코발트, 리튬, 바나듐, 셀레늄 순으로 검출되었다. 4종의 호박에 함유된 무기성분은 데치기, 전자레인지 조리 및 찌기에서 모두 감소하였으며, 데치는 조리에서 가장 많은 감소를 보였다. 조리시간에 따른 무기성분의 함량 변화는 조리시간이 증가할수록 낮은 함량을 보였으며, 5분과 10분에서 큰 차이를 확인하였다. 미량 무기성분의 함량은 조리방법과 조리시간에 따른 큰 변화를 확인할 수 없었다. 호박의 종류에 따른 무기성분의 조성은 비슷하였으며, 무기성분의 함량은 약간의 차이를 나타내었다. 애호박과 늙은호박의 무기성분은 찌는 조리법에서 높은 잔존율을 보였으며, 쥬키니와 단호박은 전자레인지 조리 시 가장 높은 잔존율을 나타내었다. 결과적으로 조리방법과 시간은 호박의 무기성분 잔존량에 영향을 주는 것으로 확인되었다.

Keywords

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