Effect of Different Atmosphere Packaging on the Preservation of Bracken
Article
Figures
Metrics
Preview PDF
Reference
Related
Cited by
Materials
Abstract:
The effect of controlled atmosphere treatment on the fresh-keeping of Pteridophyte was studied in this paper. The effects of controlled atmosphere on the fresh-keeping of Pteridophyte were studied by using natural fern as blank control group and the modified atmosphere packaging of carbon dioxide and oxygen-mixed gases with different proportions of 6% CO2+2% O2, 6% CO2+6% O2 and 6% CO2+10% O2 as experimental groups. By testing the weight loss, soluble solids, Vc content, titratable acid content, hardness and chlorophyll content of fresh-keeping ferns, the effects of different gas ratios on fresh-keeping of ferns were analyzed, and the gas ratio with best fresh-keeping effect was selected. The experimental results showed that the modified atmosphere storage slowed down the decline rate of bracken quality. Modified atmosphere preservation prolong the time to reach the peak of soluble solids and chlorophyll a from the 4th day to the 8th day, and the peak of soluble solids in the experimental group was 1.56 times that of the control group. On the 14th day, the soluble solid content of 6% CO2+10% O2 was 1.31 times that of the control group, and the chlorophyll a content was 1.55 times that of the control group. Modified atmosphere preservation slowed down the decomposition of Vc by 5%, 5% and 10% respectively, and the slow-down effect for 6% CO2+10% O2 gas ratio was more obvious. The results showed that the fresh-keeping effect of Pteridium aquilinum was the best when the contents of CO2 and O2 were 6% and 10%, respectively.
