Journal of Life Science (생명과학회지)

Korean Society of Life Science (한국생명과학회)
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Physiological Activity and Physicochemical Properties of Condensed Prunus mume Juice Prepared with Pectinase

Pectinase처리를 한 매실 농축액의 이화학적 특성 및 생리활성

  • Kim, Jeong-Ho (Department of Food Science and Technology, Kyungpook National University) ;
  • Cho, Hyun-Dong (Industry-Academy Cooperation, Dong-A University) ;
  • Won, Yeong-Seon (Institute of Agriculture Life Science, Dong-A University) ;
  • Park, Wool-Lim (Department of Biotechnology, Dong-A University) ;
  • Lee, Kwan-Woo (Department of Biotechnology, Dong-A University) ;
  • Kim, Hyuk-Joo (Department of Mechanical Engineering Industry, Sunchon National University) ;
  • Seo, Kwon-Il (Department of Biotechnology, Dong-A University)
  • 김정호 (경북대학교 식품공학부) ;
  • 조현동 (동아대학교 산학협력단) ;
  • 원영선 (동아대학교 농업생명과학연구소) ;
  • 박울림 (동아대학교 생명공학과) ;
  • 이관우 (동아대학교 생명공학과) ;
  • 김혁주 (순천대학교 산업기계공학과) ;
  • 서권일 (동아대학교 생명공학과)
  • Received : 2018.10.31
  • Accepted : 2018.11.22
  • Published : 2018.11.30
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Abstract

Prunus mume Siebold & Zucc., a member of the Rosaceae family (called Maesil in Korea), has been widely distributed in East Asia, e.g. Korea, Japan and China, and its fruit has been used as a traditional drug and health food. In this study, we evaluated physicochemical properties and physiological activities of condensed Prunus mume juice treated with pectinase (PJ). The values of total acidity, pH, sugar contents, turbidity moisture content of the PJ were 35.81%, 2.73, $54.36^{\circ}Brix$, 2.75 and 51.32%, respectively. The PJ had effective DPPH radical scavenging activity, reducing power effect, $H_2O_2$ scavenging activity and ${\beta}$-carotene bleaching effect. DPPH radical scavenging activities of PJ was 46.31%; their reducing power ($OD_{700}$) was 1.80; $H_2O_2$ scavenging activity of PJ was 91.62%; and ${\beta}$-carotene bleaching effect of PJ was 73.02%. Also, PJ showed effective levels of ${\alpha}$-glucosidase inhibition activity. The cell viability was measured by SRB assay. The PJ significantly decreased the cell viability of mouse melanoma cells (B16) and human melanoma cells (SK-MEL-2 and SK-MEL-28) in a dose-dependent manner, however, there was no effect on human keratinocyte HaCaT. In morphological study, PJ-treated SK-MEL-2 cells showed distorted and shrunken cell masses. Total polyphenol contents and total flavonoid contents of PJ were 588.31 mg% (gallic acid equivalent) and 860.45 mg% (rutin equivalent). The antiproliferative effect of PJ seems to be associated with the antioxidant activity of its flavonoid and polyphenol contents. In conclusion, PJ may be beneficial in development of a functional food material.

본 연구는 예로부터 한약재 및 식용으로 널리 사용되어지는 매실을 이용한 가공식품의 기능성 원료로서 활용하기 위해 pectinase를 사용하여 제조한 매실 농축액의 이화학적 특성 및 생리활성을 평가하였다. 총 산도는 35.81%, pH는 2.73, 당도는 $54.36^{\circ}Brix$ 및 탁도는 2.75를 나타냈다. 매실 농축액의 항산화 활성은 DPPH radical 소거활성, 환원력, $H_2O_2$ 소거활성 및 lipid peroxyl radical 소거활성을 통하여 확인하였고, positive control과 유사하거나 다소 낮게 나타나 우수한 항산화 활성을 보였다. 또한 당 분해효소인 ${\alpha}$-glucosidase 활성 저해 효과 또한 뛰어난 것으로 나타났다. 매실 농축액을 처리함에 따라 B16 마우스 피부암세포, SK-MEL-2 및 SK-MEL-28 인체 피부암세포 모두 성장이 억제되는 것을 확인할 수 있었으며 인체 피부정상세포인 HaCaT 세포에는 큰 영향을 미치지 않는 것으로 나타났고, 형태학적 관찰에서도 농도의존적으로 세포의 형태학적 변화가 유도되는 것으로 확인되었다. 매실 농축액의 폴리페놀 및 플라보노이드 함량은 각각 588.31 mg% 및 860.45 mg%로 나타났다. 결과적으로 매실 추출물은 항산화 및 당 분해 효소 활성 저해 및 암세포의 증식억제에 효능이 있는 기능성 식품 소재로 활용할 수 있을 것으로 생각된다.

Keywords

SMGHBM_2018_v28n11_1369_f0001.png 이미지

Fig 1. Antioxidant activities of Prunus mume juice treated with pectinase. (A) DPPH radical scavenging activity, (B) reducing power effect, (C) hydrogen peroxide scavenging activity and (D) β-carotene bleaching effect.

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Fig 2. Effect of α-Glucosidase inhibition of Prunus mume juice treated with pectinase.

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Fig 3. Effect of Prunus mume juice treated with pectinase on cell growth of (A) mouse melanoma B16 cells, (B) human melanoma SK-MEL-2 cells, (C) human melanoma SK-MEL-28 cells and (D) human keratinocyte HaCaT cells.

SMGHBM_2018_v28n11_1369_f0004.png 이미지

Fig. 4. Effects of Prunus mume juice treated with pectinase on proliferation of (A) human melanoma SK-MEL-2 cells and (B) human keratinocyte HaCaT cells.

Table 1. Physicochemical properties of Prunus mume juice treated with pectinase

SMGHBM_2018_v28n11_1369_t0001.png 이미지

Table 2. Total polyphenol and total flavonoid contents of Prunus mume juice treated with pectinase

SMGHBM_2018_v28n11_1369_t0002.png 이미지

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