FOOD SCIENCE ›› 2016, Vol. 37 ›› Issue (20): 261-267.doi: 10.7506/spkx1002-6630-201620044

• Packaging & Storage • Previous Articles     Next Articles

Effect of Nano-Packing on Lignification and Related Enzyme Activities of Flammulina velutipes

FANG Donglu, CHANG Shijie, ZHAO Liyan, AN Xinxin, HU Qiuhui, YANG Wenjian   

  1. 1. College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China;
    2. Collaborative Innovation Center for Modern Grain Circulation and Safety, College of Food Science and Engineering,
    Nanjing University of Finance and Economics, Nanjing 210023, ChinaHO?
  • Received:2016-10-27 Revised:2016-10-27 Online:2016-10-25 Published:2016-12-01
  • Contact: YANG Wenjian

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Abstract:

A polyethylene (PE) packing material containing nano-Ag, nano-TiO2, attapulgite and nano-SiO2 was prepared
and applied in the preservation of Flammulina velutipes and its effects on sensory quality and lignification of F. velutipes
were determined during 14-day storage at 4 ℃. The influence of nano-packing material on the lignification of F. velutipes was
studied by tracking the changes in texture, weight loss, soluble protein contents, lignin contents, the activities of phenylalnine
ammonialyase (PAL), cinnamyl alcohol dehydrogenase (CAD), and peroxidase (POD) as well as cell microstructure. The
normal PE material was used as control. After 14 days of storage, the maximum shearing force, weight loss, PAL, CAD and
POD activities of F. velutipes packed with nano-packing material were 1.191 kg, 0.51%, 20.72 U/mg, 41.23 U/mg, 10.09 U/mg,
respectively, which were significantly lower than those of the control (P < 0.05). On the other hand, the lignin content in
nano-packaging samples increased by 4.7% while that in the control increased by 14.2% compared with the initial level.
Nano-packing material has the potential to maintain the preservation quality and extend the shelf life of F. velutipes by
inhibiting the accumulation of lignin and increasing the related enzyme activities.

Key words: Flammulina velutipes, nano-packing, preservation, lignification, shelf-life

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