Analysis of Nutritional Composition and Phenolic Compound in Propolis Collected from Falseacacia and Chestnut Tree in Korea

국내산 아까시나무와 밤나무 유래 propolis의 영양성분 및 페놀성 화합물 분석

  • Song, Hyo-Nam (Department of Oriental Medical Food and Nutrition, Semyung University) ;
  • Gil, Bog-Im (Department of Food and Nutrition, Anyang University)
  • 송효남 (세명대학교 한방식품영양학과) ;
  • 길복임 (안양대학교 식품영양학과)
  • Published : 2002.08.01

Abstract

Nutritional composition and phenolic compounds of raw propolis collected from falseacacia (Robinia pseudoacacia L.) and chestnut tree (Castanea crenata), and their 70% ethanol extracts of propolis (EEP) were analyzed. Propolis had high crude lipid content, but no significant differences in general compositions in terms of collection area and plant origins. Mineral contents varied greatly depending on the plant origins, with falseacacia propolis showing the highest mineral content. Sixteen amino acids were analyzed, among which aspartic acid content was the highest at $328.4{\sim}410.6\;mg%$ and methionine the lowest at $0{\sim}21.1\;mg%$. Extraction yield for EEP was relatively high at $64.2{\sim}81.9%$, and total polyphenol and flavonoid contents were $13.9{\sim}23.7$ and $8.6{\sim}10.8%$, respectively. HPTLC and HPLC analysis on the phenolic compounds revealed the overall chromatographic patterns were almost equal, showing similar polyphenol compositions between the propolis. About 16 peaks were identified by HPLC analysis, among which 6 peaks of p-hydroxy benzoic acid, caffeic acid, ferulic acid, benzoic acid, cinnamic acid, and chrysin were identified.

국내에서 채집되는 propolis에 대한 기초자료를 얻고자 아까시나무와 밤나무를 밀원 식물로 하여 채집된 propolis와 그의 70% ethanol 추출물(EEP)에 대한 영양성분 및 페놀성 화합물을 분석하였다. 일반성분은 밀원식물에 따른 큰 차이 없이 비슷한 분포를 보였고, EEP의 경우 propolis 분말에서보다 대부분의 성분들이 상당량 감소되었다. 주요 무기질 5종은 일반성분과는 달리 채집지역과 수종에 따른 차이를 보였고, 대체로 아까시나무의 propolis가 무기물 함량이 많았다. 아까시나무의 propolis에는 칼슘함량이 가장 많았고, 밤나무 propolis는 칼륨이 가장 많이 함유되어 있었다. 반면에 EEP에서는 두 시료 모두 칼륨의 함량이 가장 많았다. 아미노산은 총 16종이 검출되었고, aparagine, cysteine, glutamine 및 tryptophan은 검출되지 않았다. 특히 밤나무 propolis에서는 methionine도 검출되지 않았다. Aspartic acid가 가장 많았고, methionine의 함유량은 극히 적었으며, 아까시나무 propolis가 아미노산 함유량이 전반적으로 더 높았다. 추출수율이 비교적 높게 나타난 EEP의 total polyphenol 함량은 $13.9{\sim}23.7%$였고, propolis의 phenolic fraction중 대부분을 차지하는 성분인 flavonoids 함량은 $8.6{\sim}10.8%$로 나타나 다른 식품재료에 비하여 매우 높은 수준이었다. 고성능 박막크로마토그래피로 페놀성 화합물을 정성분석한 결과 시료종류에 상관없이 거의 동일한 pattern의 chromatogram을 나타내었다. Polyphenol 화합물의 HPLC 분석에서는 약 16개의 peak가 검출되었고, 이중 p-hydroxy benzoic acid, caffeic acid, ferulic acid, benzoic acid, cinnamic acid 및 chrysin의 6종을 동정하였다. 시료간의 chromatographic pattern은 동일하여 propolis를 구성하는 페놀성 화합물의 종류는 큰 차이가 없는 것으로 판단되었다.

Keywords

References

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