Abstract
In order to investigate the effect of different barrier packaging materials on the preservation of harvested lettuce. Lettuces were encased in modified atmosphere packaging (MAP) with LDPE, PE, HDPE and EVOH/PE films and stored at 4℃, while the ones without packaging were used for comparison under the same conditions. During storage, the gas composition in packaging, sensory quality, weight loss, chlorophyll content and relative conductivity of lettuces were measured regularly. On the sixth day, lettuces in the control group lost the commodity value due to serious water loss. In the EVOH/PE group, O2 was running out and the CO2 ratio reached 203%. It also produced an alcohol smell in the bag. The O2 ratio in the other three groups decreased first, then fluctuated within a small range, and the proportion of CO2 increased first and then relatively stable. The preservation effect of HDPE group was the best, and the storage time could reach 18 days. Barrier suitable packaging materials could effectively improve the preservation effect of lettuce, therefore their shelf life was extended.
Publication Date
8-28-2017
First Page
122
Last Page
125
DOI
10.13652/j.issn.1003-5788.2017.08.028
Recommended Citation
Yonghang, MA; Jianxin, LIU; Xiangning, CHEN; and Xiaofei, YANG
(2017)
"Effects of different barrier packaging materials on preservation of lettuce,"
Food and Machinery: Vol. 33:
Iss.
8, Article 28.
DOI: 10.13652/j.issn.1003-5788.2017.08.028
Available at:
https://www.ifoodmm.cn/journal/vol33/iss8/28
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