Abstract
With 1.5% of pomegranate peel extract (PPE) as antimicrobial agent, polyethylene resin (PE) and polypropylene resin (PP) as base material, PE, PPE—PE, PP/PPE—PE active films were prepared and their basic properties were investigated. Pork stored at refrigeration (4±1) ℃ with PE, PPE—PE, PP/PPE—PE active packaging films, and the effects of preservation were evaluated by total viable count (TVC), total volatile basic nitrogen (TVB-N), pH value, thiobarbituric acid (TBA) value, drip loss and sensory scores. PPE—PE film was 1.96 times the oxygen transmission rate of PE film, 4 times of PP/PPE—PE film. PPE caused the light transmittance of PE film decreased, haze and tensile strength increased. On 6th day, the total viable counts (TVC) of pork samples in PE group increased to 6.54 lg (CFU/g) from 3.54 lg (CFU/g), while TVC of pork samples in PP/PPE—PE and PPE—PE Group exceeded 6 lg (CFU/g) on day 8. PP/PPE—PE and PPE—PE active packaging films can extend the shelf life of by approximately 2～3 days, compared with control treatment. And the preservation effect of PP/PPE—PE active packaging film was relatively better than that of the PPE—PE active packaging film.
Publication Date
5-28-2016
First Page
131
Last Page
136
DOI
10.13652/j.issn.1003-5788.2016.05.032
Recommended Citation
Shuaifeng, HU; Qingchao, XIE; Xianbo, LIANG; and Li, LI
(2016)
"Preservative effect of active films containing pomegranate peel extract as antimicrobial agent on chilled pork,"
Food and Machinery: Vol. 32:
Iss.
5, Article 32.
DOI: 10.13652/j.issn.1003-5788.2016.05.032
Available at:
https://www.ifoodmm.cn/journal/vol32/iss5/32
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