Food Science and Biotechnology

, Volume 20, Issue 2, pp 383–387 | Cite as

Ash gourd peel wax: Extraction, characterization, and application as an edible coat for fruits

  • K. M. Sreenivas
  • Kirtibala Chaudhari
  • S. S. LeleEmail author
Research Article


Ash gourd (Benincasa hispida Cogn) is a vegetable used in Asian countries and the peel contains high edible waxy materials. This paper reports extraction, characterization, and utilization of ash gourd peel wax as an edible coating in fruits; with strawberry (Fragaria ananassa) as a model system. Crude wax had melting point of 80°C and molecular weight by number (Mn) and molecular weight by weight (Mw) at 2,277 and 2,323 respectively. Dip method was used to coat crude wax as an emulsion on strawberry. Quantity of wax, concentration of sodium benzoate, and dip time were optimized and the values were 0.5%, 1M, and 3 min, respectively. Results were comparable with carnauba wax coating. Fruits without wax coating spoiled completely in less than 2 days at 25°C. Wax coating enhanced the shelf life to 7 days at 25°C and the properties such as texture, color, weight loss, titrable acidity, and microbial counts were well acceptable.


ash gourd peel wax characterization edible coating waste utilization 


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  1. 1.
    The Wealth of India. Raw Materials. Vol. 6. CSIR: New Delhi, India. pp. 446–459 (1962)Google Scholar
  2. 2.
    Saucedo-Pompa S, Rojas-Molina R, Aguilera-Carbó AF, Saenz-Galindo A, Garza HdL, Jasso-Cantú D, Aguilar CN. Edible film based on candelilla wax to improve the shelf life and quality of avocado. Food Res. Int. 42: 511–515 (2009)CrossRefGoogle Scholar
  3. 3.
    GarcÌa MA, Martino MN, Zaritzky NE. Plasticized starch-based coatings to improve strawberry (Fragaria ananassa) quality and stability. J. Agr. Food Chem. 46: 3758–3767 (1998)CrossRefGoogle Scholar
  4. 4.
    Donhowe IG, Fennema OR. The effects of plasticizers on crystallinity, permeability, and mechanical properties of methylcellulose films. J. Food Process. Pres. 17: 247–257 (1993)CrossRefGoogle Scholar
  5. 5.
    Bourtoom T. Edible films and coatings: Characteristics and properties. Int. Food Res. J. 15: 237–248 (2008)Google Scholar
  6. 6.
    Mhlongo FM, Luyt AS, van Sittert CGCE. Effect of cross-linking on the thermal stability and molar mass distribution of paraffin waxes. Polym. Degrad. Stabil. 73: 151–155 (2001)CrossRefGoogle Scholar
  7. 7.
    Laziæ ZR. Design of Experiments in Chemical Engineering: A Practical Guide. Wiley-VCH Verlag GmbH & Co., KGaA, Weinheim, Germany. pp. 157–464 (2004)Google Scholar
  8. 8.
    Milanovic J, Manojlovic V, Levic S, Rajic N, Nedovic V, Bugarski B. Microencapsulation of flavors in carnauba wax. Sensors 10: 901–912 (2010)CrossRefGoogle Scholar
  9. 9.
    Mercado JA, Trainotti L, Jiménez-Bermúdez L, Santiago-Doménech N, Posé S, Donolli R, Barceló M, Quesada MA. Evaluation of the role of the endo-β-(1,4)-glucanase gene FaEG3 in strawberry fruit softening. Postharvest Biol. Tec. 55: 8–14 (2010)CrossRefGoogle Scholar
  10. 10.
    Martìnez-Ferrer M, Harper C, Pérez-Muñoz F, Chaparro M. Modified atmosphere packaging of minimally processed mango and pineapple fruits. J. Food Sci. 67: 3365–3371 (2002)CrossRefGoogle Scholar
  11. 11.
    El Ghaouth A, Arul J, Ponnampalam R. Use of chitosan coating to reduce water loss and maintain quality of cucumber and bell pepper fruits. J. Food Process. Pres. 15: 359–368 (1991)CrossRefGoogle Scholar
  12. 12.
    Diab T, Biliaderis CG, Gerasopoulos D, Stakiotakis E. Physicochemical properties and application of pullulan edible films and coatings in fruit preservation. J. Sci. Food. Agr. 81: 988–1000 (2001)CrossRefGoogle Scholar
  13. 13.
    Shellhammer TH, Krochta JM. Whey protein emulsion film performance as affected by lipid type and amount. J. Food Sci. 62: 390–394 (1997)CrossRefGoogle Scholar
  14. 14.
    Hernández-Muñoz P, Almenar E, Ocio MJ, Gavara R. Effect of calcium dips and chitosan coatings on postharvest life of strawberries (Fragaria x ananassa). Postharvest Biol. Tec. 39: 247–253 (2006)CrossRefGoogle Scholar
  15. 15.
    Pádua JG, Filho JD, Caproni CM, Antunes LEC, Da Mota RV, Do Carmo EL. Physical-chemical characterization of strawberry cultivars. Acta Horticulturae 842: 891–894 (2009)Google Scholar
  16. 16.
    Han JH, Floros JD. Casting antimicrobial packaging films and measuring their physical properties and anti microbial activity. J. Plast. Film Sheet. 13: 287–298 (1997)Google Scholar

Copyright information

© The Korean Society of Food Science and Technology and Springer Netherlands 2011

Authors and Affiliations

  • K. M. Sreenivas
    • 1
  • Kirtibala Chaudhari
    • 1
  • S. S. Lele
    • 1
    Email author
  1. 1.Food Engineering and Technology Department, Institute of Chemical TechnologyNathalal Parikh MargMatunga, MumbaiIndia

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