Pre-Treatment Effects of Hot-Water and Sodium Hypochlorite on Storage quality of Cured Winter squash var. ‘Bochang’

Authors

  • Alexander Joel Gatil Gibe Philippine Centre for Postharvest Development and Mechanization
  • Jae Wook Lee

Keywords:

Key words, firmness, fungi, rind color, weight loss, chilling injury

Abstract

Winter squash var. Bochang were subjected to hot water treatment (HWT) at 55°C and dipped in NaOCl solution at 200 ppm separately prior to curing. Cured squash were immediately stored at 5°C, 12°C and at room temperature (RT) of 25±3°C. Stored winter squash were monitored for changes in quality including weight loss, mold infection and incidence of chilling injury.

Rind color of ‘Bochang’ as expressed by color value ‘b’ was delayed by pre-treatment of NaOCl 90 days after storage at 12°C and 60 days by HWT at RT. NaOCl and HWT have no influence on the rate of rind color change in ‘Bochang’ stored at 5°C. Firmness regardless of treatment was generally higher in squash stored at 5°C until four months. Level of soluble solids content (SSC) on the first month of storage increased as triggered by HWT and curing when stored at 5°C. Levels of SSC in the succeeding stage of storage further increased in a stable manner until three months. Pre-treatment with NaOCl and HWT is effective in reducing mold infection until four months but not enough to reduce weight loss until three months of storage. ‘Bochang’ stored at 5°C exhibited the lowest weight loss. The presence of fungi belonging to Fusarium genera contributed much to loss in weight. Unlike other varieties of winter squash, chilling injury was not manifested in ‘Bochang’ stored at 5°C.

 

 

Author Biography

Alexander Joel Gatil Gibe, Philippine Centre for Postharvest Development and Mechanization

Chief Science Research Specialist

References

APHIS. Plant Protection and Quarantine Treatment Manual. United States Department of Agriculture. Animal and Plant Health Inspection Service, 1993.

Armstrong JW. Development of a hot-water immersion quarantine treatment for Hawaiian grown 'Brazilian' bananas. J. Econ. Entomol. Vol 75 pp787-790, 1982.

Corrigan, V. K., P. L. Hurst and J. F. Potter. Winter squash (Cucurbita maxima) texture: sensory, chemical and physical measures. New Zealand J. Crop and Hort. Sci. Vol. 29 111-124, 2001.

Couey HM. Heat treatment for control of postharvest diseases and insect pests of fruits. Hort. Science. Vol 24(2) 198-202, 1989.

Couey HM and Hayes CF. A quarantine system for Hawaiian papaya using fruit selection and a two-stage hot-water treatment. J. Econ. Entomol. Vol 79 1307-1314, 1986.

Gibe, A. J. G and J. W. Lee. Incidence of chilling injury in two varieties of winter squash (Cucurbita maxima Duch.) at low temperature storage. Hort. Environ. Biotechnol. Vol. 49(2) 104-108, 2008.

Lee, J. W., K. S. Yoon and A. J. G. Gibe. NaOCl application and curing in winter squash, ‘Bochang’ for longer storability. Hort. Environ. Biotechnol. Vol 49(3) 168-174, 2008.

Gibe, A. J. G; K. S. Yoon; S. P. Kyoung and J. W. Lee. Influence of curing on the quality of Cucurbita maxima Duch. var. Ebis stored at different conditions. Asia Life Sci. Vol. 17(2) 325-336, 2008

Gould WP and Sharp JL. Hot-water immersion quarantine treatment for guavas infested with Caribbean fruit fly (Diptera: Tephritidae). J. Econ. Entomol. Vol 85(4) 1235-1239, 1992.

Hansen JD, Hara AH, and Tenbrink VL. Vapor heat: a potential treatment to disinfest tropical cut flowers and foliage. Hort. Science Vol. 27(2) 139-143, 1992.

Harvey W. J., D. G. Grant, and J. P. Lammerink. Physical and sensory changes during the development and storage of buttercup squash. New Zealand J Crop and Hort. Sci. 25:341-351. 1997.

Hong S I, Lee H H and Kim D M. Effects of hot water treatment on the storage stability of Satsuma mandarin as a postharvest decay control. Postharv Biol. Tech. Vol. 43 271-279, 2007.

Irving D. E.; G. J. Shingleton and P. L. Hurst. Starch degradation in buttercup squash (Cucurbita maxima) Journal of American Society of Horticultural Science Vol. 124(6) 587-590, 1999.

Lee, C. H., J. K. Cho, S. J. Lee, W. Koh, W. Park, and C. H. Kim. Enhancing β-carotene content in asian noodles by adding pumpkin powder. Cereal Chem. Vol. 79(4) 593-595, 2002.

Nagao A., Indou, T. and Dolhi H. Effects of curing conditions and storage temperature on postharvest quality of squash. J. Jap. Soc. Hort. Sci. Vol. 60 175-181, 1991

McGuire R. G. Concomitant decay reductions when mangoes are treated with heat to control infestations of Caribbean fruit flies. Plant Disease Vol. 75(9) 946-949, 1991.

Palou L. Smilanick J L., Usall J., and Vinas I. Control of postharvest blue and green molds of oranges by hot water, sodium carbonate and sodium bicarbonate. Plant Disease. Vol. 85(4) 371-376, 2001.

Roura S. I.; M. Moreira and C. E. del Valle. Shelf life of fresh-like ready-to-use diced squash. J. Food Quality Vol. 27 91-101, 2004.

Rubatzky, V. E. and M. Yamaguchi. World vegetables; principles, production and nutritive values. New York, Chapman and Hall 843 pp., 1997.

Tsang, MMC, AH Hara, TY Hata, BKS Hu, RT Kaneko, and V. Tenbrink. Hot water immersion unit for disinfection of tropical floral commodities. Am. Soc. Agric. Engr. Vol. 11(3) 397-402, 1995.

Wood, R J Buttercup squash cultural techniques. Horticultural Produce and Practice. Ministry of Agric and Fisheries, Wellington, New Zealand, 4 pp., 1981.

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Published

2015-12-18

How to Cite

Gibe, A. J. G., & Lee, J. W. (2015). Pre-Treatment Effects of Hot-Water and Sodium Hypochlorite on Storage quality of Cured Winter squash var. ‘Bochang’. Asian Journal of Applied Sciences, 3(6). Retrieved from https://www.ajouronline.com/index.php/AJAS/article/view/3420

Issue

Vol. 3 No. 6 (2015): December 2015

Section

Articles

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