Postharvest quality and shelf life of radish microgreens as impacted by storage temperature, packaging film, and chlorine wash treatment

Microgreens are new and emerging products, which are young seedlings of vegetables and herbs. A recent study showed that microgreens contain higher nutrients compared to their mature counterparts. However, they typically have a short shelf life (1–2 days) at ambient temperature. The objective of this study was to optimize postharvest handling conditions to reduce the quality loss and extend the shelf life of daikon radish (Raphanus sativus L. var. longipinnatus) microgreens. Storage temperature, packaging film, and wash treatment were investigated. Changes in headspace composition, quality index, chlorophyll concentration, tissue electrolyte leakage, and aerobic mesophilic bacteria (AMB) and yeast & mold (YM (2) film oxygen transmission rate (OTR) significantly (P < 0.05) affected O2 and CO2 composition, but OTR did not significantly affect quality attributes during 28 days of storage at 1 °C; (3) Chlorine wash treatment (100 mg/L) significantly reduced initial microbial populations by 0.5 log cfu g−1, including AMB and Y& M. However, microbial populations rebounded after day 7.

[1]  Morten Meilgaard,et al.  Sensory Evaluation Techniques , 2020 .

[2]  Kim JiGang,et al.  Effects of chlorine wash on the quality and microbial population of 'Tah Tasai' Chinese cabbage (Brassica campestris var. narinosa) microgreen. , 2009 .

[3]  D. Rodriguez-Amaya,et al.  Behavior of flavonols and carotenoids of minimally processed kale leaves during storage in passive modified atmosphere packaging. , 2011, Journal of food science.

[4]  Yaguang Luo,et al.  Delayed Modified Atmosphere Packaging of Fresh-cut Romaine Lettuce: Effects on Quality Maintenance and Shelf-life , 2005 .

[5]  Qin Wang,et al.  Postharvest biology, quality and shelf life of buckwheat microgreens , 2013 .

[6]  Yaguang Luo,et al.  Package Atmosphere Affects Postharvest Biology and Quality of Fresh-cut Cilantro Leaves , 2004 .

[7]  Kazuhiko Itoh,et al.  Effect of nitrogen gas packaging on the quality and microbial growth of fresh-cut vegetables under low temperatures. , 2002, Journal of food protection.

[8]  C. Forney,et al.  Processing line effects on storage attributes of fresh-cut spinach leaves. , 2000 .

[9]  Hao Feng,et al.  Microbial reduction and storage quality of fresh-cut cilantro washed with acidic electrolyzed water and aqueous ozone , 2004 .

[10]  Francisco Artés-Hernández,et al.  Sustainable sanitation techniques for keeping quality and safety of fresh-cut plant commodities , 2009 .

[11]  R. Paull,et al.  Effect of temperature and relative humidity on fresh commodity quality , 1999 .

[12]  Ana Allende,et al.  Microbial and quality changes in minimally processed baby spinach leaves stored under super atmospheric oxygen and modified atmosphere conditions , 2004 .

[13]  José M. Barat,et al.  Extending and Measuring the Quality of Fresh-cut Fruit and Vegetables: a Review , 2007 .

[14]  A. Brightman,et al.  Isolation of plasma membrane and tonoplast fractions from spinach leaves by preparative free-flow electrophoresis and effect of photoinduction , 1986 .

[15]  Ji Gang Kim,et al.  Changes in microbial population and quality of microgreens treated with different sanitizers and packaging films , 2012, Horticulture, Environment, and Biotechnology.

[16]  B. Pogson,et al.  Consequences of Cool Storage of Broccoli on Physiological and Biochemical Changes and Subsequent Senescence at 20 °C , 1997 .

[17]  Qin Wang,et al.  Assessment of vitamin and carotenoid concentrations of emerging food products: edible microgreens. , 2012, Journal of agricultural and food chemistry.

[18]  A. Spinardi,et al.  Effect of storage temperature on quality changes of minimally processed baby lettuce , 2012 .

[19]  Yaguang Luo,et al.  Quality and Shelf-life of Salad Savoy under Different Storage Temperatures , 2004 .

[20]  J. A. Valenzuela,et al.  EFFECT OF GRADUAL COOLING STORAGE ON CHILLING INJURY AND PHENYLALANINE AMMONIA-LYASE ACTIVITY IN TOMATO FRUIT , 2010 .

[21]  Sandhya..  Modified atmosphere packaging of fresh produce: Current status and future needs , 2010 .

[22]  Xuetong Fan,et al.  Assessment of radiation sensitivity of fresh-cut vegetables using electrolyte leakage measurement , 2005 .

[23]  G. Lambrinos,et al.  EFFECT OF TEMPERATURE AND MODIFIED ATMOSPHERE PACKAGING ON STORAGE QUALITY OF FRESH‐CUT ROMAINE LETTUCE , 2010 .