Developing optimum MAP conditions for mixed baby vegetables
Ji Young Chung, Ho-Min Kang, Jun Pill, and Kuen Woo Park
Abstracts of 27th International Horticultural Congress & Exhibition (IHC 2006), August 13-19, 2006, COEX (Convention & Exhibition), Seoul, Korea. 494 pages.
2006
บทคัดย่อ
Developing optimum MAP conditions for mixed baby vegetables
The objective of the present study was to find the optimum conditions for modified atmosphere packing (MAP) of mixed baby vegetables.The investigated crops were 9 cultivars; romaine green (Lactuca sativa cv. Romaine Green), oak leaf green (L. sativa cv. Oak Leaf Green), lollo rosa(L. sativa cv. Lollo Rosa), italiana (Cichorium intybus cv. ltaliana), beet (Betavugaris var. crunta), spinach (Spinacia oleracea). Tat soi (Brassica campestris var. narinosa), mizuna (B. rapa ssp. Nipposinica var. laciniata), Chinese mustard red (B. juncea). Plants were cultured using a non-woven fabric mat system and supplied with Yamazaki plant nutrient solution for lettuce that was changed every week.All crops were sown on 128 cell plug trays and harvested 30 days after sowing.Harvested baby vegetables were mixed and packed in MAP salad bags that were 25 or 50 mm low-density polyethylene film, ceramic film, hole film (200 hole 1m-2), and in a polyethylene box.Fresh weight was maintained well in air tight films and at low temperatures but lost rapidly with increased deterioration rate in hole-film bags and in polyethylene boxes.A carbon dioxide concentration in 50 mm film resulted in injury.Vitamin C content, and visual quality were maintained best, chlorosis rate was lowest in ceramic 25 mm film at 2°C.Therefore it was considered that the most appropriate film bag for marketing of mixed baby vegetable salads is ceramic 25 mm stored at an optimum temperature of 2°C