Postharvest Changes in Quality and Biochemical Components of Perilla Leaves

들깻잎의 수확후 품질 및 성분변화

  • Hong, Young-Pyo (Agricultural Sciences Institute, Rural Development Administration) ;
  • Kim, Seung-Yeol (College of Agriculture, Chungnam National University) ;
  • Choi, Woo-Young (College of Agriculture, Chungnam National University)
  • 홍영표 (농촌진흥청 농업기술연구소) ;
  • 김성렬 (충남대학교 농과대학) ;
  • 최우영 (충남대학교 농과대학)
  • Published : 1986.08.01

Abstract

This study was carried out to determine the shelf-life and quality changes of perilla leaves (Perilla ocimoides L.) in relation to changes in the concentration of biochemical components during storage. The shelf-life of perilla leaves was 2 to 3 days at room temperature and 6 days at $3^{\circ}C$. This was extended to 12 days at room temperature and 20 days at $3^{\circ}C$ by packaging in a 0.01 mm thick polyethylene film sack (PEFS). The ascorbic acid concentration of fresh perilla leaves was 23 mg per 100 g fresh weight. This declined to 16 mg per 100 g fresh weight on the 4th day of storage in all treatments. Ascorbic acid concentrations decreased further to 7 mg on the 8th day at room temperature and 8 mg per 100 g on the 16th day at $3^{\circ}C$ in PEFS. Total and reducing sugar concentrations in the controls were higher than those in the PEFS storage at room temperature. Protein and free amino acid concentrations gradually increased during storage. A higher protein level was maintained in the control than in the PEFS treatment. Changes in nucleic acid concentration and peroxidase and polyphenoloxidase activities during storage were also measured in relation to the changes in quality of perilla leaves.

들깻잎(Perilla ocimoides L.)의 수확후 저장온도에 따른 채소로서의 shelf-life와 저장기간중의 생화학적인 성분변화를 품질변화와 관련하여 분석하였다. 들깻잎은 실온$(20^{\circ}C)$에서 $2{\sim}3$일간, 저온$(3^{\circ}C)$에서는 6일간 저장이 가능하였고 비닐포장에 의하여 실온에서는 12일, 저온에서는 20일간 저장이 가능하였다. 신선한 들깨잎의 비타민 C 함량은 생체중으로 23mg%이었고 저장 4일째까지는 모든 처리구에서 16mg%이상이었으나 그 후에는 크게 감소하였으며 비닐포장에 의하여 저장 8일후에 실온에서 7mg%, 16일후에 저온에서 8mg% 유지되었다. 엽록소함량은 실온의 대조구에서는 저장중에 감소하였으나 저온에서는 큰 변화가 없었다. 환원당 및 전당함량은 실온저장에서는 비닐포장에 의하여 낮아졌고 저온저장에서는 증가하는 경향이었으며 처리간의 차이는 뚜렸하지 않았다. 단백질과 유리아미노산 함량은 저장중에 서서히 증가하였고 비닐포장처리구보다 대조구에서 높은 단백질수준을 유지하였다. 핵산함량, peroxidase, polyphenoloxidase 활성의 변화 등을 측정하였고 들깻잎의 품질변화와 관련하여 고찰하였다.

Keywords