한국식품과학회지 (Korean Journal of Food Science and Technology)

한국식품과학회 (Korean Society of Food Science and Technology)
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시판 인스턴트 커피에서 추출한 다당류의 화학적 특성 및 면역활성

Chemical Characteristics and Immunostimulating Activity of Crude Polysaccharide Isolated from Commercial Instant Coffee

  • 곽봉신 (경기대학교 식품생물공학과) ;
  • 신광순 (경기대학교 식품생물공학과)
  • Kwak, Bong-Shin (Department of Food Science and Biotechnology, Kyonggi University) ;
  • Shin, Kwang-Soon (Department of Food Science and Biotechnology, Kyonggi University)
  • 투고 : 2016.04.05
  • 심사 : 2016.05.10
  • 발행 : 2016.06.30
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초록

국내 시판중인 인스턴트 커피에서 다당류를 추출하여 새로운 면역 활성 물질을 확인하고자 하였다. 시판중인 인스턴트 커피를 구입하여 냉수추출 후, 에탄올 침전과 투석을 통하여 약 24%의 높은 수율로 다당류(ICP-0)를 얻을 수 있었다. ICP-0은 중성당 89.9%, 산성당 10.1%로 이루어진 다당체로써, 구성 성분으로는 갈락토스 55.5%, 만노스 25.7%와 소량의 아라비노스, 람노스 등으로 이루어진 것을 확인하였으며, 갈락토만난(galactomannan)이나 팩틴 다당류(pectic polysaccharide)가 혼합된 구조일 것이라고 추정되었다. 인스턴트 커피 유래 ICP-0에 대하여 대식세포 자극에 대한 세포증식능을 확인한 결과, NC 대비 유의적으로 높은 증식활성을 보였으며, IL-6, IL-12 및 TNF-${\alpha}$의 경우, $10{\mu}g/mL$에서도 NC 대비 우수한 사이토카인 분비 유도능을 보임이 확인되었다. 또한 NO, ROS를 분석한 결과에서도 NO의 경우 $10{\mu}g/mL$ 이상에서 NC 대비 양호한 활성을 보여 주었다. ICP-0에 대하여 2차 면역기관 중 하나인 비장세포상의 증식능을 확인한 결과, NC 대비 115% 정도 증식하는 것이 확인되어 면역세포를 직접 증진시키는 마이토겐 활성이 있음을 나타내었다. 인스턴트 커피 유래 ICP-0가 장관 내 분포되어 있는 Peyer's patch를 경유하여 장관면역에 공헌할 수 있는지 여부를 확인한 결과, NC 대비 유의적으로 골수세포의 증식능을 확인하였으며 GM-CSF와 같은 관련 사이토카인의 분비 유도가 확인되었다. 이상의 결과는 시판 인스턴트 커피로부터 분리한 다당류가 대식세포의 기능과 장관면역계를 증진시킬 수 있는 가능성을 제시한다.

To elucidate the new biologically active ingredient in commercial instant coffee, a crude polysaccharide (ICP-0) was isolated by ethanol precipitation, and its immunostimulatory activity was estimated. ICP-0 mainly consisted of galactose (55.5%), mannose (25.7%), arabinose (6.0%), and galacturonic acid (10.1%), suggesting the possibility of its existence as a mixture of galactomannan or pectic polysaccharide. ICP-0 showed proliferative activity in peritoneal macrophages and splenocytes. ICP-0 dose-dependently augmented the production of nitric oxide and reactive oxygen species by peritoneal macrophages. In addition, murine peritoneal macrophages stimulated by ICP-0 showed enhanced production of various cytokines (tumor necrosis factor-${\alpha}$, interleukin-6, and interleukin-12) as compared to unstimulated murine peritoneal macrophages. In an in vitro assay for assessing intestinal immunomodulation, the ICP-0-treated Peyer's patch cells showed higher bone marrow cell proliferation activity at $100{\mu}g/mL$ and higher production of granulocyte-macrophage colony-stimulating factor, compared to the untreated Peyer's patch cells. These results suggest that polysaccharides in commercial instant coffee have a potentiality for macrophage functions and the intestinal immune system.

키워드

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피인용 문헌

  1. Structural polymeric features that contribute to in vitro immunostimulatory activity of instant coffee vol.242, 2018, https://doi.org/10.1016/j.foodchem.2017.09.059