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Effects of 1-MCP and Controllable-Release SO2 Packaging on Cold Preservation of Grapes (C.V. Muscat Hamburg)
Abstract:
1-MCP is an ethylene inhibitor which can effective reduce the grape respiration. SO2 controllable-release packaging film is a self-made three-layer composite film which can release SO2 fungicide intelligently. In this work, we investigated the combined effects of 1-MCP and controllable-release SO2 packaging on grapes preservation under 5°C over 75 days. Grapes (C.V. Muscat Hamburg) were packed in three groups: controllable-release SO2 packaging with and without a 1-MCP sachet, and LDPE film packaging as control. Then, the headspace gas concentration in the packaging was evaluated. The physiological properties of grapes, including weight loss, decay incidence, grape stem browning, titratable acidity (TA) and total soluble solids content were evaluated, respectively. The experimental results showed that grapes packed by controllable-release SO2 packaging and 1-MCP achieved the best preservation effect. It decreased grapes stem browning and decay incidence, compared with the other treatments. The reason may be that it provided the grapes a suitable gas atmosphere, decreased the grape respiration rate and hence prolonged Muscat Hamburg grapes storage life.
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2335-2339
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August 2013
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© 2013 Trans Tech Publications Ltd. All Rights Reserved
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