Effect of initial oxygen concentration and film oxygen transmission rate on the quality of fresh‐cut romaine lettuce

Journal of the Science of Food and Agriculture - Tập 85 Số 10 - Trang 1622-1630 - 2005
Ji Gang Kim1, Yaguang Luo1, Tao Yang2, Robert A. Saftner1, Kenneth C. Gross1
1Produce Quality and Safety Laboratory, Agricultural Research Service, US Department of Agriculture, Beltsville, MD 20705, USA
2Department of Biological Resources Engineering, University of Maryland, College Park, MD 20740, USA

Tóm tắt

AbstractModified atmosphere packaging (MAP) is widely used to maintain the quality of fresh‐cut produce by matching the oxygen transmission rate (OTR) of the packaging film to the respiration rate of the packaged product. The effect of the interaction between film OTR and the initial headspace O2 on quality of fresh‐cut vegetables has not previously been reported. Romaine lettuce leaves were sliced, washed, dried and packaged with film OTRs of 8.0 and 16.6 pmol s−1 m−2 Pa−1, and with initial headspace O2 of 0, 1, 2.5, 10 and 21 kPa. Packages were hermetically sealed and stored at 5 °C for up to 14 days. For samples packaged in 16.6 OTR film, increasing the initial headspace O2 concentration delayed O2 depletion within the packages, hastened the onset and increased the intensity of discoloration, and inhibited the development of CO2 injury, acetaldehyde and ethanol accumulation, off‐odors and electrolyte leakage. With 8.0 OTR‐packaged lettuce pieces, ≤1 kPa initial headspace O2 treatments induced an essentially anaerobic environment within the packages and increased acetaldehyde and ethanol accumulation and off‐odor development. Increasing the initial O2 concentration above 1 kPa in 8.0 OTR packages transiently increased O2 concentrations and reduced fermentative volatile production, off‐odors, electrolyte leakage and CO2 injury. Regardless of initial headspace O2 concentration, all 16.6 OTR‐packaged samples had severe discoloration after 14 days of storage. Quality was better maintained in 8.0 OTR‐packaged lettuce pieces as the initial headspace O2 concentration was increased. A 21 kPa initial O2 treatment of 8.0 OTR‐packaged lettuce maintained good quality throughout storage and had the best overall quality score. Copyright © 2005 Society of Chemical Industry

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Tài liệu tham khảo

10.1021/bk-1989-0405.ch016

10.1016/S0168-1605(01)00669-9

Schlimme D, 1995, Marketing lightly processed fruits and vegetables, HortScience, 30, 15, 10.21273/HORTSCI.30.1.15

10.1006/jaer.2000.0654

Day A, 1996, High oxygen modified atmosphere packaging for fresh prepared produce, Postharvest News Inf, 7, 31

10.1006/fstl.1999.0558

10.1007/s002170050125

10.1021/jf980208s

10.1111/j.1365-2621.1988.tb00578.x

10.1016/0925-5214(93)90058-B

10.1111/j.1365-2621.1995.tb04570.x

ASTM International, 1986, Annual Book of ASTM Standards, 387

10.13031/2013.28728

10.1111/j.1365-2621.2001.tb15220.x

10.1016/S0925-5214(97)00072-0

10.1016/0925-5214(95)00002-X

Meilgaard MC, 1991, Sensory Evaluation Techniques, 213

Loaiza J, 1997, Postharvest physiology and quality of cilantro (Coriandrum sativum L), HortScience, 32, 104, 10.21273/HORTSCI.32.1.104

10.21273/HORTSCI.30.1.18

10.1016/S0925-5214(96)00041-5

Lipton W, 1987, Carbon dioxide‐induced injury of romaine lettuce stored in controlled atmospheres, HortScience, 22, 461, 10.21273/HORTSCI.22.3.461

10.21273/JASHS.125.6.729

10.21273/JASHS.130.1.116

10.21273/HORTSCI.30.1.25

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Thông tin xuất bản

Journal of the Science of Food and Agriculture

Tập 85 Số 10

1622-1630

Thông tin tác giả