The harvested oil-palm fruit bunches are transported quickly to processing,
within 24 hours, due to a rapid increase in the free fatty acids (FFA). The FFA lower
the quality of palm oil. As an inhibitor of ethylene action, 1-methylcyclopropene
(1-MCP) is widely used and effectively delays the ripening of numerous climacteric
fruits, helping to maintain quality. The goal of this study is to find out whether 1-
MCP treatment can improve the quality of palm oil. We investigated fresh fruit
bunches at harvest stage of ‘Tenera’ oil-palm. Fumigations with 1-MCP at
concentrations of 0, 500 and 1000 nl L-1 were done in a closed plastic box for 18
hours. Each fruit bunch was evaluated for three sections: fruitlets at the bottom,
middle and top. The ripening of palm fruit was delayed by 1-MCP, when evaluated
by the fruit peel coloring that turns from black to reddish orange. The fumigations
did not affect total fruit oil content. FFA in palm fruit increased rapidly and were
the highest on day 1 after treatments. The percentage of FFA in 1-MCP treated
fruits, however, was lower than in untreated control, especially in fruit at the bottom
or top of a bunch. The 1-MCP applications also stopped further changes in FFA
content in the following 2 to 4 days. In conclusion, 1-MCP application has the
potential to maintain the level of FFA in palm fruit after harvest, and to allow longer
times of transportation from the fields to the manufacturers
The harvested oil-palm fruit bunches are transported quickly to processing,within 24 hours, due to a rapid increase in the free fatty acids (FFA). The FFA lowerthe quality of palm oil. As an inhibitor of ethylene action, 1-methylcyclopropene(1-MCP) is widely used and effectively delays the ripening of numerous climactericfruits, helping to maintain quality. The goal of this study is to find out whether 1-MCP treatment can improve the quality of palm oil. We investigated fresh fruitbunches at harvest stage of ‘Tenera’ oil-palm. Fumigations with 1-MCP atconcentrations of 0, 500 and 1000 nl L-1 were done in a closed plastic box for 18hours. Each fruit bunch was evaluated for three sections: fruitlets at the bottom,middle and top. The ripening of palm fruit was delayed by 1-MCP, when evaluatedby the fruit peel coloring that turns from black to reddish orange. The fumigationsdid not affect total fruit oil content. FFA in palm fruit increased rapidly and werethe highest on day 1 after treatments. The percentage of FFA in 1-MCP treatedfruits, however, was lower than in untreated control, especially in fruit at the bottomor top of a bunch. The 1-MCP applications also stopped further changes in FFAcontent in the following 2 to 4 days. In conclusion, 1-MCP application has thepotential to maintain the level of FFA in palm fruit after harvest, and to allow longertimes of transportation from the fields to the manufacturers
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