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中国精品科技期刊2020
额尔敦巴雅尔,春艳,白鹤飞,等. 聚丙烯和PBAT树脂共混薄膜对金针菇的贮藏保鲜效果[J]. 食品工业科技,2021,42(19):329−335. doi: 10.13386/j.issn1002-0306.2020110174.
引用本文: 额尔敦巴雅尔,春艳,白鹤飞,等. 聚丙烯和PBAT树脂共混薄膜对金针菇的贮藏保鲜效果[J]. 食品工业科技,2021,42(19):329−335. doi: 10.13386/j.issn1002-0306.2020110174.
Eerdunbayaer , CHUN Yan, BAI Hefei, et al. Preservation Effect of Polypropylene and PBAT Resin Blend Film on Flammulina velutipes [J]. Science and Technology of Food Industry, 2021, 42(19): 329−335. (in Chinese with English abstract). doi: 10.13386/j.issn1002-0306.2020110174.
Citation: Eerdunbayaer , CHUN Yan, BAI Hefei, et al. Preservation Effect of Polypropylene and PBAT Resin Blend Film on Flammulina velutipes [J]. Science and Technology of Food Industry, 2021, 42(19): 329−335. (in Chinese with English abstract). doi: 10.13386/j.issn1002-0306.2020110174.

聚丙烯和PBAT树脂共混薄膜对金针菇的贮藏保鲜效果

Preservation Effect of Polypropylene and PBAT Resin Blend Film on Flammulina velutipes

  • 摘要: 本研究选择具有耐化学性、耐热性、高强度机械性能和高耐磨加工性能的聚丙烯(PP)作为基材与具有较高的透湿性的生物可降解材料PBAT树脂进行共混,共混后选用改性效果最好的比例(PP80%/PBAT20%)制成PPT2共混薄膜,对金针菇进行PPT2真空包装和PPT2密封包装,通过对比无包装空白组、市场包装组、PPT2密封组和PPT2真空组后,发现无包装组在第3 d时出现萎蔫腐烂现象失去食用价值,市场包装组在18 d时可溶性固形物含量下降并在包装袋上出现结露和涨包现象失去食用价值,PPT2密封包装组由于前期对气氛控制不稳定,呼吸旺盛时可溶性固形物含量出现骤然上升的假象。PPT2真空包装组金针菇失重率、Vc含量变化、可溶性固形物含量下降的比较平缓,未出现涨包结露等现象,保存至27 d时才出现萎蔫腐烂现象失去食用价值,保鲜效果与其它三组相比较为优异。因此,PPT2共混薄膜结合真空包装能有效控制金针菇后生长引起的菌柄伸长现象,从而延长货架期。

     

    Abstract: In this study, polypropylene (PP) with chemical resistance, heat resistance, high strength mechanical properties and high wear resistance processing properties was selected as the base material to blend with the biodegradable material PBAT resin with high moisture permeability. After mixing, selected the ratio of the best modification effect (PP80%/PBAT20%) to make PPT2 blend film, and carried out PPT2 vacuum packaging and PPT2 sealed packaging on Flammulina velutipes. By comparing the blank group without packaging, the market packaging group, the PPT2 sealing group and the PPT2 vacuum group, it was found that the unpackaged group wilted and rotted at the 3rd day and lost its edible value. The market packaging group had a decline in soluble solid content at 18 days and condensation and swelling on the packaging bag lost its edible value. PPT2 was sealed due to the unstable atmosphere control of the packaging group in the early stage, the soluble solid content appears to rise suddenly when breathing is strong. PPT2 vacuum packaging group Flammulina velutipes weight loss rate, Vc content change, and soluble solid content decreased relatively smoothly, and there was no phenomenon such as swelling and condensation, and wilting and rotting do not appear until 27 days of storage. It losed its edible value. The comparison was excellent. Therefore, the PPT2 blend film combined with vacuum packaging could effectively control the elongation of the stalk caused by the growth of Flammulina velutipes, thereby extending the shelf life.

     

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