Subscribe to our Newsletter and get informed about new publication regulary and special discounts for subscribers!

ILNS > Volume 60 > Gamma Radiation Treated Chitosan Solution for...
< Back to Volume

Gamma Radiation Treated Chitosan Solution for Strawberry Preservation: Physico-Chemical Properties and Sensory Evaluation

Full Text PDF


The research was designed to extend shelf life of stored strawberry by bioactive chitosan coating. Strawberry fruits were dipped for 2 min in different concentration of irradiated chitosan (300, 500, 1000 and 1500 ppm) solution which were subjected to different gamma radiation doses (30, 40, 50 and 60 kGy) while uncoated fruits were served as control. Samples were packed in zip bags and stored in 4°C and kept for observation. Fruits treated with 50 kGy irradiated chitosan at 1500 ppm concentration showed significant delays in the change of weight loss, decay percentage, pH, and ascorbic acid content as compared with the uncoated control fruits. Samples stored in 4°C and packed in zip bags showed an increased shelf life up to 21 days whereas control samples with same condition could maintain edible quality only up to 3 days. Compared to the controls, all coating formulations had positive effect on the inhibition of cell wall degrading enzymes. These findings suggest that the use of irradiated chitosan coatings can be very useful for extending the shelf-life and maintaining quality of strawberry fruit.


International Letters of Natural Sciences (Volume 60)
S. Jesmin et al., "Gamma Radiation Treated Chitosan Solution for Strawberry Preservation: Physico-Chemical Properties and Sensory Evaluation", International Letters of Natural Sciences, Vol. 60, pp. 30-37, 2016
Online since:
Nov 2016

[1] F. Van De Velde et al., Bioactive compounds and antioxidant capacity of Camarosa and Selva strawberries (Fragaria x ananassa Duch. ), Foods. 2 (2013) 120–131.

[2] F. Lopes da Silva et al., Anthocyanin pigments in strawberry, LWT, Food Sci. Technol. 40 (2007) 374–382.

[3] K.D. Vu et al., Development of edible bioactive coating based on modified chitosan for increasing the shelf life of strawberries, Food Res. Int. 44 (2011) 198–203.

[4] G. Romanazzi, Chitosan treatment for the control of postharvest decay of table grapes, strawberries and sweet cherries, Fresh Produce. 4 (2009) 111–115.

[5] B.V. Sallato et al., Effect of boscalid on postharvest decay of strawberry caused by Botrytis cinerea and Rhizopus stolonifer, Span. J. Agric. Res. 5 (2007) 67–78.

[6] H. Li, T. Yu, Effect of chitosan on incidence of brown rot, quality and physiological attributes of postharvest peach fruit, J. Sci. Food Agric. 81 (2000) 269–274.

[7] D. Lin, Y. Zhao, Innovations in the development and application of edible coatings for fresh and minimally processed fruits and vegetables, Compr. Rev. Food Sci. Food Saf. 6 (2007) 59–75.

[8] E.A. Baldwin, New Coating Formulations for the Conservation of Tropical Fruits, Available on http: /technofruits2001. cirad. fr 10/08/(2002).

[9] A. Cagri, Z. Uspunol, E. Ryser, Antimicrobial edible films and coating, J. Food Prot. 67 (2004) 833–848.

[10] R.N. Tharanathan, F.S. Kittur, Chitin—the undisputed biomolecule of great potential, Crit. Rev. Food Sci. Nutr. 43 (2003) 61–87.

[11] A. El Ghaouth et al., Antifungal activity of chitosan on postharvest pathogens induction of morphological and cytological alterations in Rhizopus stolonifer, Mycol. Res. 96 (1992) 769–779.

[12] B.E. Amborabe et al., Early events induced by chitosan on plant cells. J Exp Bot. 59 (2008) 2317–2324.

[13] N.F.F. Soares et al., Antimicrobial edible coating in post-harvest conservation of guava, Rev. Bras. Frutic. 33 (2011) 281–289.

[14] A. Islam et al., Effective γ-radiation Dose on Chitosan for Preservation of Mangoes (Mangifera indica). Jahangirnagar University Environmental Bulletin. 2 (2013) 35-40.

[15] S.M. Ebrahim et al., Effect of Low Molecular Weight Chitosan Coating on Physico-chemical Properties and Shelf life Extension of Pineapple (Ananas sativus), Journal of forest products & industries. 3(3) (2014) 161-166.

[16] F. Dong et al., Chunde Jin, Improvement of quality and shelf life of strawberry with nanocellulose/chitosan composite coatings, Bangladesh J. Bot. 44(5) (2015) 709-717.

[17] A.O.M. Talbea, M.A. Rabie, G.M. El-Araby, Extending the shelf-life of cold stored strawberry by chitosan and carnauba coatings, Zagazig J. Agric. Res. 41(5) (2014) 1067-1076.

[18] AOAC, Official Methods of Analysis, 16th ed., Association of Official Analytical Chemists, Virginia, USA, (1994).

[19] J. Bai et al., Formulation of zein coatings for apple (Malus domestica Borkh. ), Postharvest Biol. Technol. 28 (2003) 259-268.

[20] A. Baxter et al., Improved method for i. r. determination of the degree of N-acetylation of chitosan, Int J Biol Macromol. 14 (1992) 166-169.

[21] B.L. Butler et al., Mechanical and barrier properties of edible chitosan films as affected by composition and storage, J. Food. Sci. 61 (1996) 953–955.

[22] P. Hernández-Munõz et al., Effect of chitosan coating combined with postharvest calcium treatment on strawberry (Fragaria x ananassa) quality during refrigerated storage, Food Chem. 110 (2008) 428–435.

[23] P. Jitareerat, S. Paumchai, S. Kanlayanarat, Effect of chitosan on ripening, enzymatic activity, and disease development in mango (Mangifera indica) fruit, New Zealand Journal of Crop and Horticultural Sciences, 35 (2007) 211–218.

[24] M.A. Hossain et al., Foliar Application of Radiation Processed Chitosan as Plant Growth Promoter and Anti-fungal Agent on Tea Plants, International Journal of Scientific and Engineering Research. 4(8) (2013) 1693-1698.

Show More Hide