Korean Journal of Food Science and Technology (한국식품과학회지)

Korean Society of Food Science and Technology (한국식품과학회)
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Physico-chemical Characteristics of Black Raspberry Fruits (Bokbunja) and Wines in Korea

산지별 복분자와 시판 복분자주의 이화학적 특성 분석

  • Lee, Seung-Joo (Department of Culinary and Food Service Management, Sejong University)
  • 이승주 (세종대학교 조리외식경영학과)
  • Received : 2013.03.12
  • Accepted : 2013.05.14
  • Published : 2013.08.31
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Abstract

Korean black raspberry fruits (bokbunja) were collected from 11 different producing regions, and commercial black raspberry wines were obtained from 24 manufacturers. Samples were analyzed for soluble solids, titratable acidity, pH, reducing sugar content, hunter color values, intensity, hue, total phenolic content, and organic acids. The fruit samples showed similar pH levels (3.43-3.52), but significantly differed in total acidity levels (9.98-16.2 g/L). The predominant organic acids in the fruit samples were citric acids (1.39-5.63 mg/mL) and succinic acids (0.25-6.53 mg/mL). Among the samples, black raspberry fruits from Goksung and Nonsan showed the lowest levels of total phenolic content, and the lowest values in intensity. The fruits from Jeongeup and Sunchang showed higher levels of phenolic content, soluble solids, and intensity. Some wine samples, including BH, KO, SR, and SE, showed overall high levels of phenolic content, organic acids like citric and succinic acid, and color values such as $a^*$, $b^*$, and intensity. Other wine samples, including DW, SC, GJ, and NB, were high in acetic acid, color values like $L^*$, and hue.

국내 주요 산지 9개소(전북 고창, 순창, 정읍, 전남 함평, 강원도 횡성, 충남 당진, 충남 논산, 경남 거창, 전남 곡성)에서 생산된 복분자와 전국에서 시판되는 24종의 복분자주를 수거하여 이화학적 특성을 분석하였다. 전반적으로 각 지역별 복분자와 시판 복분자주의 이화학적 특성에서 차이가 크게 나타났다. 특히 당도와 총산도, L값, b값, Hue, Intensity와 같이 색상관련 항목과 총 페놀성 화합물 함량(phenolic), 유기산 함량에서 시료간의 차이가 컸다. 일반적으로 음료 및 주류로의 제품화에서 주요 항목인 총 산도, Brix, 환원당에서 정읍(naja) 시료가 다른 지역의 복분자에 비해 높게 나타났다. 반면 곡성(woori)과 논산(neulso) 시료의 경우 색상 진하기 정도인 Intensity, 총 페놀성 화합물 함량, 유기산 수준에서 다른 시료에 비해 현저히 낮은 수준을 보여 착색이 부족한 것으로 나타나 향후 품종 개량이나 재배 환경 최적화가 필요할 것으로 여겨진다. 현재 복분자 품종에 대한 정확한 조사 및 관리가 명확하지 않아 품종이나 지역 간의 비교가 정확히 이루어지지 못 하고 있다. 향후 복분자관련 산업의 활성화를 위해 가장 중요한 원료인 복분자의 품종, 재배지역 및 재배 방법 등에 따른 다양한 이화학적 및 생물학적 특성분석과 데이터베이스화 작업이 필요하리라 사료된다. 복분자주의 경우도 이화학적 특성에서 지역 간의 차이보다 각각 시료간의 차이가 크게 나타나 향후 관능특성 및 소비자 기호도 조사를 통한 좀 더 상세한 연계조사가 필요하리라 여겨진다.

Keywords

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