Korean Journal of Food Science and Technology (한국식품과학회지)

Korean Society of Food Science and Technology (한국식품과학회)
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Quantitative Analysis of Various Carotenoids from Different Colored Paprika Using UPLC

UPLC를 이용한 색상별 파프리카 유래 카로티노이드의 정량적 평가

  • Hwang, Jeong Rok (Department of Food and Nutrition, College of Human Ecology, Seoul National University) ;
  • Hwang, In Kyeong (Department of Food and Nutrition, College of Human Ecology, Seoul National University) ;
  • Kim, Suna (Department of Home Economics, College of Natural Science, Korea National Open University)
  • 황정록 (서울대학교 식품영양학과) ;
  • 황인경 (서울대학교 식품영양학과) ;
  • 김선아 (한국방송통신대학교 자연과학대학 가정학과)
  • Received : 2014.06.11
  • Accepted : 2014.12.30
  • Published : 2015.02.28
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Abstract

This study aimed to simultaneously determine various carotenoids from different colored paprika using an ultra performance liquid chromatograph (UPLC) equipped with a HSS T3 column. Analysis was performed at 450 nm using gradient conditions with acetonitrile/methanol/methylene chloride (65/25/10) and distilled water. We improved the peak resolution and performed carotenoid analysis within 30 min. We qualitatively analyzed 11 carotenoids (neoxanthin, capsorubin, violaxanthin, capsanthin, zeaxanthin, lutein, ${\alpha}$-cryptoxanthin, ${\beta}$-cryptoxanthin, lycopene, ${\alpha}$-carotene, and ${\beta}$-carotene). For the validation of UPLC methods, we validated the precision and accuracy of capsanthin. Capsanthin showed good linearity ($R^2$=0.9998) in the concentration range of $1-200{\mu}g/mL$ with 2.4 and $7.2{\mu}g/mL$ of limit of detection (LOD) and limit of quantification (LOQ), respectively. The relative standard deviation (RSD) for intra- and inter-day precision was less than 3.83%. Recovery was in the range of 91.86-99.87%. We quantitatively analyzed carotenoid contents from 8 different colored paprika (red, orange, yellow, and green). The most abundant carotenoids were capsanthin in red paprika, and zeaxanthin in orange, yellow, and green paprika.

본 연구에서는 UPLC를 이용하여 11종 카로티노이드(neoxanthin, capsorubin, violaxanthin, capsanthin, zeaxanthin, lutein, ${\alpha}$-cryptoxanthin, ${\beta}$-cryptoxanthin, lycopene, ${\alpha}$-carotene, ${\beta}$-carotene)를 30분 내에 분석할 수 있는 방법을 확립하였으며, 이를 이용하여 다양한 색과 품종의 파프리카 내의 카로티노이드를 정량 분석하였다. 분석에는 HSS T3 컬럼과 acetonitrile:methanol:methylene chloride 혼합 용매와 증류수의 이동상을 이용하였으며, 개발한 조건 하에서 10종 카로티노이드를 잘 분리할 수 있었다. Capsanthin에 대한 검량선은 $1-200{\mu}g/mL$ 농도범위에서 상관계수($R^2$) 0.9998의 높은 직선성을 나타내었고 각각 2.4, $7.2{\mu}g/mL$의 검출한계와 정량 한계를 나타내었다. 일내 RSD값은 1.57-3.09%, 일간 RSD값은 1.98-3.83%를 나타냈으며, 회수율은 일내와 일간에서 각각 91.86-94.98, 98.10-99.87%의 값을 나타내어 분석에 적합함을 알 수 있었다. 이후 붉은색 파프리카 3종(레드마운틴, 바이런, 시로코), 주황색 파프리카 1종(오렌지프로), 노란색 파프리카 2종(피에스타, 볼란테), 녹색 파프리카 2종(레드마운틴, 바이런)의 카로티노이드 정량 분석을 실시하여 본 연구에서 제시한 카로티노이드의 분석 조건이 다양한 색상의 파프리카를 동시에 분석할 수 있는 방법임을 확인하였다. 본 연구에서의 분석 조건을 이용하여 파프리카 이외에도 다양한 카로티노이드 함유 식품의 정량 분석을 보다 정확하고 신속하게 수행할 수 있을 것으로 판단된다.

Keywords

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