Korean Journal of Medicinal Crop Science (한국약용작물학회지)

The Korean Society of Medicinal Crop Science (한국약용작물학회)
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Changes in Composition of Gugija (Lycii Fructus) Species According to Harvest Time

수확시기에 따른 구기자 품종의 성분변화

  • 이희철 (충남농업기술원 청양구기자시험장) ;
  • 이봉춘 (충남농업기술원 생물환경과) ;
  • 김수동 (충남농업기술원 청양구기자시험장) ;
  • 이가순 (충남농업기술원 금산인삼약초시험장) ;
  • 백승우 (충남농업기술원 청양구기자시험장) ;
  • 이석수 (충남농업기술원 청양구기자시험장) ;
  • 김성민 (공주대학교 산업과학대학)
  • Published : 2008.10.30
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Abstract

Total sugar, crude protein, crude lipid, ash, total polyphenol, extract and betaine contents of various Lycii fructus species (Cheongyang jaerae, Myungan, Bulro, Cheongdae, Jangmyung, Cheongwoon, Cheongyang NO.6, and Cheongyang NO.7) were investigated according to harvest time at intervals of one momth from mid August to mid November. In Cheongyang NO.6, average content of total sugar and extract were the highest, 28.91% and 62.31%, respectively. In Cheongyang NO.7, crude protein (3.24%), total polyphenol (2.13%), betaine(10.77 mg/g) were the highest and crude lipid (6.82%) was the higest in Cheongdae species, and ash (5.83%) was the highest in Cheongwoon species. At the most of the species (except Cheongyang jaerae, Myungan) crude protein, crude lipid, ash and betaine contents were increased, and total sugar, total polyphenol and extract contents were decreased according to harvest time was lated. Also, a relationship among the components of Lycii fructus was found out. ; excract contents (r = 0.81) were increased as total sugar contents were increased, while crude protein (r = -0.88), crude lipid (r = -0.82), ash contents (r = -0.81) were decreased as that And betaine contents (r = 0.90) were increased as total polyphenol contents were increased.

시험장에서 육성한 품종인 명안, 불로, 청대, 장명, 청운과 육성중인 청양6호, 청양7호 및 청양재래의 가용성 무질소물, 조단백질, 조지질, 회분, 총 폴리페놀, 엑스, 베타인의 함량을 8, 9, 10 및 11월의 수확시기별로 조사한 결과, 가용성 무질소물 및 엑스는 육성중인 청양6호가 가장 높은 함량을 보였고, 조단백질, 총폴리페놀 및 베타인의 함량에서는 육성중인 청양 7호가 가장 높은 함량을 보였으며, 조지질은 청대에서, 조회분은 청운에서 가장 높았다. 건과비율은 육성중인 청양6호에서 가장 높았고, 건과비율이 높을수록 가용성 무질소물의 함량은 증가 (r = 0.70)하는 반면 조단백질 (r = -0.83) 및 조회분 (r = -0.71)등은 감소하였다. 일반성분 중에는 서로 일정한 상관을 보였는데, 가용성 무질소물의 함량이 증가하면 엑스의 함량 (r = 0.81)은 높아지는 반면, 단백질 (r = -0.88), 지질 (r = -0.82) 및 회분 함량 (r = -0.81)은 감소하고, 총폴리페놀 함량이 증가하면 베타인 함량이 증가 (r = 0.90)하는 경향이었다. 품종특성과 성분을 분석한 결과 육성중인 청양 6호는 가용성 무질소물 및 엑스분이 높게 관찰되었을 뿐만 아니라, 건과비율이 높아 타 품종에 비해 쉽게 건조될 수 있어 건조비용을 줄일 수 있는 것으로 예상되었고, 청양 7호는 조단백질, 총폴리페놀 및 베타인 함량이 높아 기능성 품종으로서의 가치를 보여주었다.

Keywords

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