Korean Journal of Food Science and Technology (한국식품과학회지)

Korean Society of Food Science and Technology (한국식품과학회)
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Growth Characteristics and Changes of Pigment Content of Purple Sweet Potato during Growth

자색고구마의 생육특성 및 색소함량의 변화

  • Kim, Seon-Jae (Department of Food Engineering, Mokpo National University) ;
  • Rhim, Jong-Whan (Department of Food Engineering, Mokpo National University) ;
  • Lee, Lan-Sook (Department of Food Engineering, Mokpo National University) ;
  • Lee, Joon-Seol (Mokpo Experiment Station, Honam Agriculture Experiment Station) ;
  • Jeong, Byeong-Choon (Mokpo Experiment Station, Honam Agriculture Experiment Station)
  • 김선재 (목포대학교 식품공학과) ;
  • 임종환 (목포대학교 식품공학과) ;
  • 이란숙 (목포대학교 식품공학과) ;
  • 이준설 (호남농업시험장 목포시험장) ;
  • 정병춘 (호남농업시험장 목포시험장)
  • Published : 1996.12.30
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Abstract

Growth characteristics and changes of pigment content of purple sweet potato (PSP) during growth were investigated. Vine length of PSP was increased to the maximum length of 130 cm after 100 days of growth. Numbers of branches and nodes were increased to the maximum of 21and 550, respectively, after 120 days of growth. Vine weight was also increased to the maximum of 4,384 kg/10a after 120 days of growth, while the weight of marketable root was increased continuously to the end of the growth period of 150 days to reach the production of 1,875 kg/10a. Uniquely considerable amount of anthocyanin pigment has been developed in both skin and flesh of young roots harvested after 40 days of growth. The pigment content was increased slowly until 140 days of growth then decreased. This fact indicates that the best time for harvesting of PSP is 140 days after planting.

자색고구마의 생육시기에 따른 수확량, 생육 특성 그리고 색소 함량의 변화를 조사하였다. 자색고구마의 지상부 길이는 생육시기 100일에 최고인 130cm에 도달하였고 분지수는 생육시기 120일에 최고인 21개였으며 절수는 생육시기 120일에 최고인 550개로 나타나 그 후로 서서히 감소하였다. 지상부 무게는 생육시기 120일에 최고인 4,384kg/10a에 도달하였으며 지하부 무게는 생육기간이 길어질수록 증가하는 경향을 나타냈고 생육 말기인 150일에는 1,8750g/10a로 나타났다. 자색고구마의 색소 함량은 생육 40일부터 색소가 생성되어 서서히 증가하는 경향을 보였으며 생육기간 140일째에는 색소 함량이 최대로 증가하다가 감소하는 경향을 나타내어 이 때가 자색고구마의 수확 적기임을 알 수 있었다.

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