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Micro-perforated packaging delays leaf yellowing and maintains flavor of postharvest pak choi ( Brassica rapa subsp. chinensis ) following low-temperature storage

Food Packaging and Shelf Life, ISSN: 2214-2894, Vol: 29, Page: 100681
2021
  • 19
    Citations
  • 0
    Usage
  • 34
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    19
    • Citation Indexes
      19
  • Captures
    34

Article Description

The objective of this study was to investigate the effects of micro-perforated packaging on the quality attributes of pak choi ( Brassica rapa subsp. chinensi s) during shelf life (20 °C) removed after 7 d at 4 °C. Gas composition in macro-perforated control packaging stayed close to air, non-perforated packaging resulted in anoxia, and micro-perforated packaging effectively held high enough O 2 level, where 12.5 % O 2 and 8.9 % CO 2 was modified by 12 micro-perforations of 100 μm in diameter after 3 d of shelf life. Weight loss and yellowing were most serious in the control, and off-odor occurred in non-perforated packaging. Micro-perforated packaging delayed yellowing due to the lowered activities of chlorophyll-degrading enzymes, increased total polyphenol content, enhanced antioxidant capacity, and preserved flavor of pak choi. These results showed that micro-perforated packaging should be recommend for fresh leafy vegetables during shelf life following low-temperature storage, which is commonly utilized in the distribution chain.

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