Journal of Food Science and Technology

, Volume 52, Issue 2, pp 1200–1205 | Cite as

Shellac and Aloe vera gel based surface coating for shelf life extension of tomatoes

  • O. P. Chauhan
  • C. Nanjappa
  • N. Ashok
  • N. Ravi
  • N. Roopa
  • P. S. Raju
Original Article


Shellac (S) and Aloe vera gel (AG) were used to develop edible surface coatings for shelf-life extension of tomato fruits. The coating was prepared by dissolving de-waxed and bleached shellac in an alkaline aqueous medium as such as well as in combination with AG. Incorporation of AG in shellac coating improved permeability characteristics of the coating film towards oxygen and carbon dioxide and water vapours. The coatings when applied to tomatoes delayed senescence which was characterized by restricted changes in respiration and ethylene synthesis rates during storage. Texture of the fruits when measured in terms of firmness showed restricted changes as compared to untreated control. Similar observations were also recorded in the case of instrumental colour (L*, a* and b* values). The developed coatings extended shelf-life of tomatoes by 10, 8 and 12 days in case of shellac (S), AG and composite coating (S + AG) coated fruits, respectively; when kept at ambient storage conditions (28 ± 2 °C).


Shellac Aloe vera Coating Shelf-life Tomato 





Aloe gel


Physiological loss in weight


Relative humidity


Oxygen transmission rate


Carbon dioxide transmission rate


Water vapor transmission rate


  1. Alleyne V, Hagenmaier RD (2002) Candelilla-shellac: an alternative formulation for coating apples. Hortic Sci 35:691–693Google Scholar
  2. ASTM (1998) Standard test methods for water vapour transmission of materials. In: Annual book of ASTM standards, Weat Conshohocken: American Society for Testing and Materials, PAGoogle Scholar
  3. Chauhan OP, Raju PS, Khanum F, Bawa AS (2007) Aloe vera—pharmaceutical and food applications. Ind Food Ind 26:43–51Google Scholar
  4. Chauhan OP, Raju PS, Singh A, Bawa AS (2011a) Shellac and Aloe vera gel based surface coatings for maintaining keeping quality of apple slices. Food Chem 126:961–966CrossRefGoogle Scholar
  5. Chauhan OP, Raju PS, Dasgupta DK, Bawa AS (2011b) Coating composition of fruits and vegetables and method thereof. Indian Patent 246270Google Scholar
  6. Damasceno S, Vierira Sutil-de-Olivera P, Moro E, Macedo EK, Lopes MC, Vicentini NM (2003) Application of cassava starch film effect in the tomato postharvest conservation. Ciencia-e-Tecnologia-de-Alimentos 23:377–380CrossRefGoogle Scholar
  7. El-Ghaouth A, Ponnampalam R, Castaigne F, Arul J (1992) Chitosan coating to extend the storage life of tomatoes. Hortic Sci 27:1016–1018Google Scholar
  8. Goyal GK, Paltani IP (2003) Shellac: most versatile edible coating material for food industry. Ind Food Ind 22:55–58Google Scholar
  9. Hagenmaier RD, Shaw PE (1991) Permeability of shellac coatings to gases and water vapour. J Agric Food Chem 39:825–829CrossRefGoogle Scholar
  10. Hagenmaier RD, Shaw PE (2002) Changes in volatile components of stored tangerines and other citrus fruits with different coatings. J Food Sci 67:1742–1745CrossRefGoogle Scholar
  11. Jinhe B, Hagenmaier RD, Elizabeth AB (2002) Volatile response of four apple varieties with different coatings during marketing at room temperature. J Agric Food Chem 50:7660–7668CrossRefGoogle Scholar
  12. Jinhe B, Alleeyne V, Hagenmaier RD, Mattheis JP, Baldwin EA (2003) Formulation of zein coatings for apples (Malus domestica Borkh). Postharvest Biol Technol 28:259–268CrossRefGoogle Scholar
  13. Kabir J, Ghosh B, Dutta Ray SK, Mitra SK (1995) Post harvest use of edible coatings on shelf life of tomato. Ind Food Packer 49:25–28Google Scholar
  14. Kajuo A, Toshihiko U, Tomoyoshi S, Tomonori T (2001) Method for preventing oxidation of seeds and fruits. European Patent No. JP 20011258515.Google Scholar
  15. Martinez RD, Alburquerque N, Valverde JM, Guillen F, Castillo S, Valero D, Serrano M (2006) Postharvest sweet cherry quality and safety maintenance by Aloe vera treatment: a new edible coating. Postharvest Biol Technol 39:93–100CrossRefGoogle Scholar
  16. Okamoto MY, Ibanez PS (1986) Final report on the safety assessment of shellac. J Am Coll Toxicol 5:309–327Google Scholar
  17. Patel MM (1987) Shellac encapsulant for high potency sweeteners in chewing gum. US Patent No. 4673577Google Scholar
  18. Perez Gago MB, Rojas C, Del Rio MA (2002) Effect of lipid type and amount of edible hydroxypropyl methylcellulose-lipid composite coating used to protect postharvest quality of mandarins cv. fortune. J Food Sci 8:2903–2910CrossRefGoogle Scholar
  19. Raju PS, Chauhan OP, Bawa AS (2010) Postharvest handling systems and storage of vegetables. In: Sinha NK, Jasim A (eds) Postharvest handling of vegetables. Blackwell Publishing Limited, Iowa, pp 185–198Google Scholar
  20. Saftener RA (1999) The potential of fruit coating and film treatments for improving the storage and shelf life qualities of ‘Gala’ and ‘Golden delicious’ apples. J Am Soc Hortic Sci 124:682–689Google Scholar
  21. Shupe K (2003) Antimicrobial agent isolated from Aloe vera. US Patent No. 6551631Google Scholar
  22. Thai Thi H, Ducamp MN, Lebrun M, Baldwin EA (2002) Effect of different coating treatment on the quality of mango fruits. J Food Qual 25:471–486CrossRefGoogle Scholar
  23. Togrul H, Arslan N (2005) Carboxymethyl cellulose from sugar beet pulp cellulose as a hydrophilic polymer in coating of apples. J Food Sci Technol 42:139–144Google Scholar

Copyright information

© Association of Food Scientists & Technologists (India) 2013

Authors and Affiliations

  • O. P. Chauhan
    • 1
  • C. Nanjappa
    • 1
  • N. Ashok
    • 1
  • N. Ravi
    • 1
  • N. Roopa
    • 1
  • P. S. Raju
    • 1
  1. 1.Defence Food Research LaboratoryMysoreIndia

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