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

The Korean Society of Food Science and Nutrition (한국식품영양과학회)
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Preparation and Quality Characterization of Low Sugar Sansuyu Jam Using Fresh Corni fructus

산수유를 이용한 저당 산수유잼의 제조 및 품질 특성

  • Received : 2015.10.15
  • Accepted : 2015.11.21
  • Published : 2016.02.29
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Abstract

Corni fructus is often distributed or processed in the form of dried fruit. However, Corni fructus is hard to develop due to its distinctive sour, bitter, and astringent taste. The aim of this study was to develop a puree to broaden the utilization of fresh Corni fructus. Manufacturing and quality characteristics of Sansuyu jam made from puree were investigated. Seeded Corni fructus pulp consisted of 20 to 26% whole fruit. The moisture and sugar contents of pulp were 52~63% and $15{\sim}31^{\circ}Brix$, respectively. Sterilized distilled water was added to seeded pulp to achieve a constant solids content in the puree. As the pectin content was low as $0.14{\pm}0.01%$, gelling agent was added to produce jam. The moisture content of the puree increased to 83~88%. The sugar content was reduced to $10^{\circ}Brix$. There was no significant difference in pH. DPPH radical scavenging activities of the puree according to ripening rate at a concentration of 100 ppm were 47.92% and 50.96%, respectively. The preference degree was $5.03{\pm}0.97$ at a ripening ratio of 50:50, 2% pectin, and 0.2% carrageenan. These results imply that Corni fructus pulp puree may be appropriate for development as a natural food product.

본 연구는 산수유 고유의 붉은색과 신맛, 쓴맛을 유지하기 위해 당 함유량을 줄인 산수유잼을 제조하였다. 고형분 농도가 일정한 산수유 퓨레를 제조한 후 이를 이용하여 저당 산수유잼 제조 배합비를 조사하였다. 산수유 퓨레는 과육 무게의 동량 멸균증류수를 첨가하여 제조하였으나 수분 함량은 20~30% 정도만 증가하였다. 펙틴 함량은 0.14%로 매우 낮게 나타나 잼 제조 시 겔화제의 첨가가 필요하였다. 퓨레는 과육에 비해 당도가 30% 수준으로 감소하였으나 pH는 차이가 없었다. 펙틴 첨가로 인한 잼의 pH 변화는 없었다. 퓨레의 L값, a값 및 b값 모두 성숙과 퓨레가 완숙과 퓨레에 비하여 높게 나타났다. 또한 잼 제조 시 성숙과의 함량이 증가할수록 L값, a값 및 b값 모두 증가하였다. 기계적 경도는 펙틴 함량이 증가할수록, 완숙과의 함유량이 증가할수록 산수유잼의 gel strength 및 hardness가 증가하였다. 산수유 성숙과 및 완숙과 퓨레의 DPPH 라디칼 소거능은 100 ppm 농도에서 각각 50.96%, 47.92%의 소거 활성을 보였으며, 산수유잼은 1,000 ppm 농도에서 41.24~49.98%의 소거 활성을 보였다. 총 폴리페놀 함량은 92.70~158.52 mg GAE/g으로 완숙과의 첨가량이 증가할수록 폴리페놀 함량은 감소하는 경향으로 산수유 과육이 농후해지면서 폴리페놀 함량은 감소하였다. 전반적인 기호도 평가에서는 펙틴 2.0%가 5.43, 성숙과 및 완숙과를 동량 첨가했을 때 5.03으로 가장 높은 점수를 보였다. 이와 같은 결과를 통해 건피에 국한되었던 산수유 가공품이 생과를 활용한다면 다양한 제품 개발이 가능할 것으로 생각된다.

Keywords

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