Article Info 제31권 2호 강원 농업생명환경연구 Vol.31, No.2, pp.57-63, 2019
Title Effects of OTR Film Types on the Quality during MA Storage of Lactuca indica L. Baby Leaf Vegetable
Author Kang, H. M.1 , I. L. Choi2 and J. Y. Kim3*
Institutions 1Professor, Division of Horticulture and Systems Engineering, Program of Horticulture, Kangwon National University, Chuncheon 24341, Korea
2Post Doctor, Division of Horticulture and Systems Engineering, Program of Horticulture, Kangwon National University, Chuncheon 24341, Korea
3Researcher, BCS Korea, Cheonan 31197, Korea 
Abstract This study was conducted to examine the effects of OTR film types on the quality during MA (modified atmosphere) storage of ‘Sheonhyang’ (Lactuca indica L.) baby leaf vegetable harvested at baby leaves size less than 10 cm plant height packed with 50 cc, 1,300 cc, 10,000 cc, 20,000 cc, 40,000 cc, and 80,000 cc/m-2/day-1/atm-1 OTR (oxygen transmission rate) films and MP (micro- perforated) film, and then stored at 8°C for 22 days. Fresh weight loss rate of all OTR film treatments showed a 1.1% until the storage end date, and MP treatment showed a 5.5% until the storage end date. The oxygen concentration in the packaging during storage period was maintained at 19% over in 20,000 cc, 40,000 cc, and 80,000 cc OTR film treatments, and the 50 cc OTR film treatment was maintained 15－16% during storage period. And concentration of the carbon dioxide was showed the highest at 50 cc treatments of 11% at the storage end date, and 1,300 cc, 10,000 cc OTR film treatments to show the levels of 7% and 5%, respectively, and the other OTR film treatment showed a concentration of less than 4%. Micro-perforated film treatment was showed more than 20% of oxygen concentration and less than 0.1% of carbon dioxide concentration at storage end date. Ethylene concentration in the package was maintained 1－4 µL/L-1 in the all treatments during the storage period, and tended to increase rapidly at 17 days of storage. The visual quality was maintained in the 50 cc, 1,300 cc treatments at end of storage date. The chlorophyll content and Hue angle value were surveyed highest at 50 cc and 1,300 cc treatments at the end of storage, and the b* value of yellow color was lowest in 50 cc and 1,300 cc treatments. The DPPH radical scavenging activity decreased with increasing oxygen permeability at the end of storage compared with before storage. Therefore, 1,300 cc OTR film treatment which was most effective for yellowing suppression and maintaining quality during storage is considered to be proper for packaging of ‘Sheonhyang’ (Lactuca indica L.) baby leaf vegetable.
Keyword DPPH radical scavenging ability, Visual quality, Wild vegetable, Yellowing
03_(57-63)J4_20190009_M1(김주영).pdf