Korean Journal of Food Science and Technology (한국식품과학회지)

Korean Society of Food Science and Technology (한국식품과학회)
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Nutritional composition, antioxidant capacity, and brain neuronal cell protective effect of cultivars of dried persimmon (Diospyros kaki)

품종별 곶감(Diospyros kaki)의 영양성분 분석, 산화방지 효과 및 뇌 신경세포 보호효과

  • Kim, Jong Min (Division of Applied Life Science (BK21 Plus), Institute of Agriculture and Life Science, Gyeongsang National University) ;
  • Park, Seon Kyeong (Division of Applied Life Science (BK21 Plus), Institute of Agriculture and Life Science, Gyeongsang National University) ;
  • Kang, Jin Yong (Division of Applied Life Science (BK21 Plus), Institute of Agriculture and Life Science, Gyeongsang National University) ;
  • Park, Sang Hyun (Division of Applied Life Science (BK21 Plus), Institute of Agriculture and Life Science, Gyeongsang National University) ;
  • Park, Su Bin (Division of Applied Life Science (BK21 Plus), Institute of Agriculture and Life Science, Gyeongsang National University) ;
  • Yoo, Seul Ki (Division of Applied Life Science (BK21 Plus), Institute of Agriculture and Life Science, Gyeongsang National University) ;
  • Han, Hye Ju (Division of Applied Life Science (BK21 Plus), Institute of Agriculture and Life Science, Gyeongsang National University) ;
  • Lee, Su-Gwang (National Institute of Forest Science, Division of Special Forest Products) ;
  • Lee, Uk (National Institute of Forest Science, Division of Special Forest Products) ;
  • Heo, Ho Jin (Division of Applied Life Science (BK21 Plus), Institute of Agriculture and Life Science, Gyeongsang National University)
  • 김종민 (경상대학교 응용생명과학부(BK21 plus), 농업생명과학연구원) ;
  • 박선경 (경상대학교 응용생명과학부(BK21 plus), 농업생명과학연구원) ;
  • 강진용 (경상대학교 응용생명과학부(BK21 plus), 농업생명과학연구원) ;
  • 박상현 (경상대학교 응용생명과학부(BK21 plus), 농업생명과학연구원) ;
  • 박수빈 (경상대학교 응용생명과학부(BK21 plus), 농업생명과학연구원) ;
  • 유슬기 (경상대학교 응용생명과학부(BK21 plus), 농업생명과학연구원) ;
  • 한혜주 (경상대학교 응용생명과학부(BK21 plus), 농업생명과학연구원) ;
  • 이수광 (국립산림과학원 산림소득자원연구과) ;
  • 이욱 (국립산림과학원 산림소득자원연구과) ;
  • 허호진 (경상대학교 응용생명과학부(BK21 plus), 농업생명과학연구원)
  • Received : 2018.01.05
  • Accepted : 2018.02.20
  • Published : 2018.04.30
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Abstract

This study was conducted to compare nutritional analysis and neuroprotective effect of 5 cultivars of Diospyros kaki (Dungsi, Godongsi, Gojongsi, Gabjubaekmok, and Bansi). In nutritional analysis, three free sugars: sucrose, glucose, and fructose, and six fatty acids: tartaric acid, hexadecanoic acid, palmitic acid, oleic acid, octadecenamide, and octadecane, were detected. Potassium and phosphorus levels were the highest in inorganic component analysis, and glutamic acid and aspartic acid were the highest contents in amino acid analysis. Vitamin C was detected in all cultivars. Total phenolic content was the highest in Dungsi. Antioxidant activities such as ABTS (3-ethylbenzothiazoline-6-sulfonic acid), DPPH (1,1-diphenyl-2-picrylhydrazyl) radical scavenging activities, FRAP (ferric reducing/antioxidant power), and MDA (malondialdehyde) inhibitory effect were the highest in Gabjubaekmok. Acetylcholinesterase inhibitory activity, cell viability, intracellular reactive oxygen species (ROS) accumulation, and lactate dehydrogenase (LDH) release were measured to confirm the neuroprotective effect in MC-IXC cells. Gabjubaekmok showed significant acetylcholinesterase (AChE) inhibition and neuroprotection.

본 연구에서는 떫은감의 5가지 공시품종인 상주둥시, 고종시, 고동시, 갑주백목, 청도반시를 이용하여 가공된 곶감의 유리당, 지방산, 무기성분, 구성 아미노산, 바이타민 C와 같은 영양성분 분석을 진행하였고, 총 페놀성 화합물의 함량을 측정함과 동시에 in vitro 상에서 ABTS, DPPH 라디칼 제거 활성을 측정하였고, FRAP, 지방질과산화물 생성 억제효과, 아세틸콜린 분해효소 억제효과를 확인하였다. 이를 토대로 MC-IXC 뇌 신경세포에서 신경세포 생존율과 산화적 스트레스 억제효과, 세포막 보호효과를 확인하였다. 유리당 분석에서는 상주둥시 품종이 포도당(glucose), 과당(fructose) 함량이 가장 높았고, 지방산 함량은 상주둥시 품종에서는 올레산(oleic acid)이, 고동시, 고종시, 갑주백목, 반시에서는 팔미트산(palmitic acid)이 가장 높은 비율을 나타내었다. 포타슘과 인의 함량이 다른 무기성분들에 비해 월등히 높았으며, 주요 아미노산으로는 아스파트산(aspartic acid)과 글루탐산(glutamic acid)이 상대적으로 높았고, 바이타민 C 역시 5 품종 모두 검출되었다. 또한, 총 페놀성 화합물을 상주둥시의 95% 에탄올 추출물이 가장 높았고, ABTS, DPPH 라디칼 제거 활성과 FRAP, 지방질 과산화물 생성 억제활성 그리고 아세틸콜린 분해효소 억제 활성에서 갑주백목의 80% 에탄올 추출물이 가장 높은 활성을 나타내었다. 산화적 스트레스에 대한 뇌 신경세포 생존율은 갑주백목이 가장 높은 생존율을 나타내었으며, 산화적 스트레스 생성 억제와 뇌 신경세포 세포막 보호효과 역시 갑주백목이 가장 큰 억제 활성과 보호효과를 보였다. 이와 같은 결과로 보아 곶감은 뛰어난 산화방지 효과를 가지고 있으며, 이를 근간으로 뇌 신경세포 보호효과도 우수한 것으로 나타났다. 이러한 생리활성능력은 임산물의 고부가가치 소재개발에 있어 산업적 활용 가능성을 재고하는데 도움이 될 것으로 판단된다. 다만 생리활성 물질의 검증이 부족하고, 산화방지 활성이 in vitro 상의 효과에 국한된 점에서 향후 물질분석과 인기지능 개선 효과 검증을 통해 인기지능 개선 건강기능식품 소재로서 연구될 수 있을 것으로 판단된다.

Keywords

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