Articles
EFFECTS OF ACTIVE MODIFIED ATMOSPHERE PACKAGING (MAP) ON CARBOHYDRATES CONTENTS AND QUALITY IN POTTED CARNATIONS (DIANTHUS CARYOPHYLLUS)
Article number
970_9
Pages
93 – 99
Language
English
Abstract
Quality of potted carnation is often lowered by unfavorable environmental conditions during transportation and under consumers residents.
Modified atmosphere packaging (MAP) during simulated shipment for 48 h slightly increased the number of open florets in potted carnation.
In this study, we applied passive and active MAP to potted carnation Scarlet plants.
Plants were placed in polyethylene bags of 0.05 mm thickness and held at 20°C for 48 h under dark condition (i.e., passive MAP). O2 concentration was lowered to 10% and CO2 increased to 2.8% by using 5.16% CO2 in N2 gas at the start of MAP (i.e., active MAP). At the beginning of MAP, 0 or 0.1 μlL-1 of 1-methylcyclopropene (1-MCP) was released by using EthylBloc®. Then the quality of potted plants was evaluated under continuous light of PPFD 15 μmolm-2 s-1. After 48 h of passive and active MAP, O2 concentration dropped to 17 and 7%; CO2 concentration rose to 3 and 3.7%, respectively.
Ethylene concentration was higher in the 1-MCP treated bags.
Active MAP treatment slightly delayed opening of florets and tended to increase the number of open florets 4 days after treatment (DAT). Active MAP tended to increase dry weight and soluble carbohydrates, especially pinitol, in the leaves. 1-MCP delayed the peaks of floret wilting from 6 to 10 DAT. Combined treatment of active MAP and 1-MCP significantly increased the number of open florets.
These results suggested that 1-MCP is beneficial to retain open florets, and active MAP plus 1-MCP treatment alleviated loss of carbohydrates and suppressed ethylene action, and thus improved quality of potted carnations.
Modified atmosphere packaging (MAP) during simulated shipment for 48 h slightly increased the number of open florets in potted carnation.
In this study, we applied passive and active MAP to potted carnation Scarlet plants.
Plants were placed in polyethylene bags of 0.05 mm thickness and held at 20°C for 48 h under dark condition (i.e., passive MAP). O2 concentration was lowered to 10% and CO2 increased to 2.8% by using 5.16% CO2 in N2 gas at the start of MAP (i.e., active MAP). At the beginning of MAP, 0 or 0.1 μlL-1 of 1-methylcyclopropene (1-MCP) was released by using EthylBloc®. Then the quality of potted plants was evaluated under continuous light of PPFD 15 μmolm-2 s-1. After 48 h of passive and active MAP, O2 concentration dropped to 17 and 7%; CO2 concentration rose to 3 and 3.7%, respectively.
Ethylene concentration was higher in the 1-MCP treated bags.
Active MAP treatment slightly delayed opening of florets and tended to increase the number of open florets 4 days after treatment (DAT). Active MAP tended to increase dry weight and soluble carbohydrates, especially pinitol, in the leaves. 1-MCP delayed the peaks of floret wilting from 6 to 10 DAT. Combined treatment of active MAP and 1-MCP significantly increased the number of open florets.
These results suggested that 1-MCP is beneficial to retain open florets, and active MAP plus 1-MCP treatment alleviated loss of carbohydrates and suppressed ethylene action, and thus improved quality of potted carnations.
Publication
Authors
K. Yamane, W. Ohira, Y. Yamaki, C. Burana
Keywords
Dianthus caryophyllus, potted plant, MAP, 1-MCP, carbohydrates
Online Articles (45)