Following exposure to 24 days under all MAP conditions, the fruit showed a significantincrease (p<0.05) in ethanol content as can be seen in Fig. 2. Ethanol concentration increasedfrom 0.06 g/g fruit weight in fresh longkong to 0.21, 0.20 and 0.25 g/g fruit weight forlongkong which was stored under the MAP conditions of 5%CO2:5%O2, 5%CO2:10%O2 and5%CO2:5%O25%CO2:10%O210%CO2:5%O2Storage time (days)Carbon dioxide (%) As. J. Food Ag-Ind. 2009, 3(01), 64-74 6910%CO2:5%O2, respectively. The highest concentration of ethanol (0.25 g/g fruit weight) waspresented in longkong which was stored under the MAP condition of 10%CO2:5%O2. Thehighest CO2 concentration detected inside the package was approximately 84.25% at terminatetime. High CO2 concentration can induce anaerobic metabolism. Pyruvate, the end product ofglycolysis could undergo decarboxylation to produce acetaldehyde, which was reducedsubsequently to ethanol [12, 13]. In contrast, the lowest concentration of ethanol (0.20 g/g fruitweight) was found in longkong which was stored under the MAP condition of 5%CO2:10%O2which presented the lowest concentration of CO2 inside the package at the end of storage. increased ethanol content.
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