Abstract
This study was aimed to assess the effects of calcium lactate (CL) on quality, shelf-life and storage physiology of bitter gourd. Fruits were dipped in the aqueous solution of CL (50, 75, and 100 mM) and stored at 10 °C and 85–95% relative humidity (RH). The changes in physical, biochemical and enzymological parameters were recorded at five days interval. The results showed that in CL@100 mM treated fruit, physiological loss in weight (PLW) and decay incidence were minimized. Conversely, their firmness, total phenolics, antioxidants and total chlorophyll retained at higher side. The CL @ 75 mM was able to retain higher ascorbic acid up to 20 days while CL@100 mM was effective in controlling pectin methylesterase (PME) activity and increasing the inhibitory activity of α-amylase and α-glucosidase. Therefore, our observations suggested that by applying CL@100 mM, 5 days extra (20 days) shelf-life of bitter gourd fruit can be achieved with notable retention of biochemical compounds over untreated fruit (15 days with poor retention of important nutrients).
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Abbreviations
- 1-MCP:
-
1-Methylcyclopropene
- CL:
-
Calcium lactate
- DPPH:
-
2,2-Diphenyl-1-picrylhydrazyl
- FW:
-
Fresh weight
- GAE:
-
Gallic acid equivalents
- GRAS:
-
Generally recognized as safe
- LDPE:
-
Low-density polyethylene
- OD:
-
Optical density
- PLW:
-
Physiological loss in weight
- PME:
-
Pectin methylesterase
- RH:
-
Relative humidity
- SE:
-
Standard error
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The authors are thankful to ICAR-Indian Agricultural Research Institute for financial support and laboratory facility for conducting the experiment.
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The study was anticipated, planned and coordinated by RA. UP performed the experiment. RRS rendered scientific advice. EV analyzed the experimental data. UP and RA have written the manuscript. All the authors have approved the manuscript.
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Prajapati, U., Asrey, R., Varghese, E. et al. Effects of calcium lactate on postharvest quality of bitter gourd fruit during cold storage. Physiol Mol Biol Plants 27, 1811–1821 (2021). https://doi.org/10.1007/s12298-021-01045-8
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DOI: https://doi.org/10.1007/s12298-021-01045-8