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浙江大学学报（农业与生命科学版）
Journal of Zhejiang University (Agriculture and Life Sciences)  2020, Vol. 46 Issue (1): 55-63    DOI: 10.3785/j.issn.1008-9209.2019.08.011
Research articles     
Effects of packaging of polyethylene bags with different thicknesses on storage quality and lignification of water bamboo
Hanqing ZHANG(),Haiyan GAO,Ruiling LIU,Yanchao HAN,Xiangjun FANG,Hangjun CHEN()
Institute of Food Science, Zhejiang Academy of Agricultural Sciences/Key Laboratory of Post-Harvest Handling of Fruits, Ministry of Agriculture and Rural Affairs/Key Laboratory of Fruits and Vegetables Postharvest and Processing Technology Research of Zhejiang Province/Key Laboratory of Postharvest Preservation and Processing of Fruits and Vegetables, China National Light Industry, Hangzhou 310021, China
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Abstract  

To study the effect of different polyethylene packaging bags on the preservation of water bamboo, the water bamboo (Zizania latifolia cv. Longjiao No. 2) from Tongxiang of Zhejiang Province were packaged in polyethylene (PE) bags with different thicknesses (0.02, 0.04, 0.06, 0.08 mm), and then stored at (2±1) ℃ with the relative humidity (RH) of 80%-85%. The gas content in the packaging bags, the color, firmness, pectin content, soluble pectin content, and the activities of polygalacturonase (PG) and Cx cellulose of water bamboo were analyzed to reveal the effects of PE bags with different thicknesses on the quality and lignification of water bamboo during storage. The results showed that, with the increase of PE packaging bag thickness, the O2 concentration decreased and the CO2 concentration increased. The PE packaging bags with 0.06 mm could maintain better color, higher firmness than the other three packaging bags. The change analysis on cell wall components of water bamboo showed that the packaging of the PE bags with 0.06 mm could delay the increase of lignin and cellulose contents. It also could delay the decline of pectin content and the increase of soluble pectin. In addition, the packaging of the PE bags with 0.06 mm could maintain the activities of PG and Cx cellulose; thus, it delayed the lignification process of water bamboo during storage. In brief, the modified atmosphere packaging with 0.06 mm PE bags shows the best effect on quality preservation and delaying lignification.

Key words： water bamboo (Zizania latifolia L.)      modified atmosphere packaging      storage quality      lignification     
Received: 01 August 2019      Published: 25 February 2020
CLC:  TS 255.3  
Corresponding Authors: Hangjun CHEN     E-mail: 553974785@qq.com;spshangjun@sina.com
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Hanqing ZHANG
Haiyan GAO
Ruiling LIU
Yanchao HAN
Xiangjun FANG
Hangjun CHEN
Cite this article:

Hanqing ZHANG,Haiyan GAO,Ruiling LIU,Yanchao HAN,Xiangjun FANG,Hangjun CHEN. Effects of packaging of polyethylene bags with different thicknesses on storage quality and lignification of water bamboo. Journal of Zhejiang University (Agriculture and Life Sciences), 2020, 46(1): 55-63.

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http://www.zjujournals.com/agr/10.3785/j.issn.1008-9209.2019.08.011     OR     http://www.zjujournals.com/agr/Y2020/V46/I1/55


不同厚度聚乙烯袋包装对茭白采后品质和木质化的影响

以‘龙茭2号’茭白为试验材料，采用不同厚度（0.02、0.04、0.06、0.08 mm）聚乙烯（polyethylene, PE）包装袋扎口分装，于（2±1） ℃、相对湿度80%～85%的冷库贮藏，通过测定包装袋内气体成分，茭白色泽、硬度、原果胶、可溶性果胶、木质素和纤维素含量以及多聚半乳糖醛酸酶、Cx纤维素酶活性等指标，研究不同厚度PE袋包装对茭白采后品质和木质化的影响。结果表明：随着PE包装袋厚度的增加，O2体积分数降低，而CO2体积分数增加。0.06 mm PE袋包装相比于其他厚度的包装能够保持茭白较好的色泽及较高的硬度；通过对细胞壁组分分析表明，0.06 mm PE袋包装能延缓茭白木质素和纤维素含量的升高，抑制可溶性果胶含量的下降和原果胶含量的增加。此外，0.06 mm PE袋包装能够较好地保持茭白多聚半乳糖醛酸酶和Cx纤维素酶活性，从而延缓茭白在贮藏期间的木质化进程。总之，0.06 mm PE袋的自发气调包装对保持茭白的品质和延缓木质化的作用最佳。


关键词： 茭白,  自发气调包装,  贮藏品质,  木质化 
Fig. 1 Changes of O2 (A) andCO2 (B) concentrations in PE packaging bags with different thicknesses during storage
Fig. 2 Effect of PE packaging bags with different thicknesses on the L* (A) and WH (B) values of water bamboo
Fig. 3 Effect of PE packaging bags with different thicknesses on the firmness of water bamboo
Fig. 4 Effect of PE packaging bags with different thicknesses on the lignin (A) and cellulose (B) contents of water bamboo
Fig. 5 Effect of PE packaging bags with different thicknesses on the pectin content of water bambooPectin content is calculated on the basis of fresh mass.
Fig. 6 Effect of PE packaging bags with different thicknesses on the activities of polygalacturonase (PG) (A) and Cx cellulase (B) of water bamboo
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