Food Science and Preservation (한국식품저장유통학회지)

The Korean Society of Food Preservation (한국식품저장유통학회)
권호 표지

Chemical Components and Physiological Activities of Young Mulberry(Morus alba) Stem

뽕나무 어린줄기의 화학성분 및 생리활성

  • 정창호 (경상대학교 식품공학과·농업생명과학연구원) ;
  • 주옥수 (진주산업대학교 식품가공학과) ;
  • 심기환 (경상대학교 식품공학과·농업생명과학연구원)
  • Published : 2002.06.01
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Abstract

In order to exploit as a new functional decocted beverage, chemical components, antioxidative and antimicrobial activities young stems of mulberry(Morus alba) were surveyed. The proximate composition was composed of crude fiber 51.12%, ash 13.46%, total sugar 10.38%, crude fat 9.10% and crude protein 5.01%. The P(295.9 mg%) was the highest mineral found in young stem of mulberry and Ca 289.6 mg%, K 209.6 mg%, Na 58.3 mg%, Mg 45.0 mg% and Fe 4.6 mg% in that order. Free sugars was composed of glucose 1.08%, galactose 022%, sucrose 0.20% and fructose 0.16%. Eight fatty acids in stem of mulberry were identified and the major fatty acids were linoleic acid(46.10%), palmitic acid(27.84%) and linolenic acid(10.85%). Among the 17 amino acids detected, total amino acid was 2,450.5 mg% and proline(313.7 mg%) was the most predominant. Methanol extract and ethyl acetate fraction showed stronger activity of the hydrogen donating activities, each of 77.24% and 80.08%, respectively. The methanol extract from young stem of mulberry showed the strongest antimicrobial activities to Bacillus subtitis and Bacitus cereus. Chloroform and ethyl acetate fractions from methanol extract of young stem showed a inhibition zone of 9.0∼19.0 ㎜ in diameter against pathogen bacteria.

뽕나무 어린줄기를 이용하여 새로운 기능성 추출 음료개발을 위한 목적으로 뽕나무 줄기의 화학성분, 항산화 및 항균활성을 조사하였다. 일반성분은 조섬유 51.12%, 회분 13.46%, 총당 10.38%, 조지방 9.10% 및 조단백 5.01% 순으로 나타났다 뽕나무 어린줄기에 가장 많은 무기성분으로는 P(295.9 mg%)으로 나타났으며, 그 외 Ca 289.6 mg%, K 209.6 mg%, Na 58.3 mg%, Mg 45.0 mg% and Fe 4.6 mg% 순으로 나타났다. 유리당은 총 4종이 분리, 동정되었으며, 그 중 glucose가 1.08%로 높게 나타났고, galactose 0.22%, sucrose 0.20% 및 fructose 0.16%로 함유되어 있었다. 지방산은 8종이 분리되었으며, 주된 지방산으로는 linoleic acid, palmitic acid 및 linolenic acid로 나타났다. 분리된 18종의 총 아미노산 중 proline이 313.7mg%로 가장 높은 함량을 차지하였으며, 총 아미노산함량은2,450.5 mg%로 나타났다. 항산화 효과는 용매별 추출물에서는 methanol 추출물이 77.24%, 용매분획별 추출물에서는 ethyl acetate 분획층에서 80.08%로 각각 높게 나타났다. 뽕나무 어린 줄기의 메탄올 추출물은 Bacillus subtilis와 Bacillu scereus에 대하여 강한 항균활성을 나타내었다. 메탄을 추출물의 chloroform 분획층과 ethyl acetate분획층에서 병원성 미생물에 대하여 9.0~l9.0 mm의 저해활성을 나타내었다.

Keywords

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