Enhancing the Quality of Fresh Pistachio Fruit Using Sodium Alginate Enriched with Thyme Essential Oil

Document Type : Original Research

Authors
A. Shakerardekani 1
M. Hashemi 2
M. Shahedi 3
A. Mirzaalian Dastjerdi 2
1 Pistachio Research Center, Horticultural Sciences Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Rafsanjan, Islamic Republic of Iran.
2 Department of Horticultural Sciences, University of Hormozgan, Bandar Abbas, Islamic Republic of Iran.
3 Department of Food Science and Technology, College of Agriculture, Isfahan University of Technology, Isfahan, Islamic Republic of Iran.
Abstract
The combined coating-effects of Sodium Alginate (SA) and Thyme Essential Oil (TEO) was investigated at three levels of, respectively, (0.0, 1.0, and 1.5 %) and (0.0, 0.3, and 0.5%) on fresh pistachio during 6 weeks of cold (3±1°C) storage. Physiochemical parameters (hull and hard-shell color, hull hardness, soluble sugar, chlorophyll, and soluble solids content) and microbial load (plate count agar) were measured every 2 weeks of storage. Similarly, the sensory attributes of pistachio were evaluated by trained panelists and Quantitative Descriptive Analysis (QDA) method from minimum (1) to maximum level (15) score. While weight loss of each pistachio sample increased during storage time, those treated with alginate had considerably less weight losses than other treatments. The pistachio treated with combination of SA (1%) and TEO(0.3 or 0.5%) showed significantly higher hull hardness, L* values, soluble sugar, chlorophyll, and lower growth of microorganisms (mainly yeast and mold) than other treated and non-treated (control) samples. The highest sensory scores of 12.3 and 10.6 for hull color of pistachio were related to samples coated again with combinations of SA (1%) and TEO (0.3 or 0.5%), respectively, and were significantly higher than the score of control sample (6.4). Since the pistachio treated with the above-mentioned concentrations of SA and TEO had significantly higher physiochemical, microbiological, and sensory attributes than the other samples, their quality indicators were superior to other treatments (including control samples) and, most probably, they had longer shelf lives and potential to preserve their natural characteristics of fresh pistachio during storage.

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References
Aloui, H., Khwaldia, K., Licciardello, F., Mazzaglia, A., Muratore, G., Hamdi, M. and Restuccia, C. 2014. Efficacy of the combined application of chitosan and Locust Bean Gum with different citrus essential oils to control postharvest spoilage caused by Aspergillus flavus in dates. Int. J. Food Microbiol., 170, 21-28.
Antunes, M. D. C. and Cavaco, A. M. 2010. The use of essential oils for postharvest decay control. A review. Flavour Fragr. J., 25(5), 351-366.
Azarakhsh, N., Osman, A., Ghazali, H. M., Tan, C. P. and Adzahan, N. M. 2014. Lemongrass essential oil incorporated into alginate-based edible coating for shelf-life extension and quality retention of fresh-cut pineapple. Postharvest Biol. Tec., 88, 1-7.
Buchanan, R. and Shepherd, A. 1981. Inhibition of Aspergillus parasiticus by thymol. J. Food Sci., 46(3), 976-977.
Carvalho, R. L., Cabral, M. F., Germano, T. A., de Carvalho, W. M., Brasil, I. M., Gallao, M. I. and de Miranda, M. R. A. 2016. Chitosan coating with trans-cinnamaldehyde improves structural integrity and antioxidant metabolism of fresh-cut melon. Postharvest Biol. Tec., 113, 29-39.
Chong, J. X., Lai, S. and Yang, H. 2015. Chitosan combined with calcium chloride impacts fresh-cut honeydew melon by stabilising nanostructures of sodium-carbonate-soluble pectin. Food Control, 53, 195-205.
Chrysargyris, A., Nikou, A. and Tzortzakis, N. 2016. Effectiveness of Aloe vera gel coating for maintaining tomato fruit quality. New Zeal. J. Crop. Hort., 44(3), 203-217.
Díaz-Mula, H. M., Serrano, M. and Valero, D. 2012. Alginate coatings preserve fruit quality and bioactive compounds during storage of sweet cherry fruit. Food Bioprocess. Tech., 5(8), 2990-2997.
Dong, F. and Wang, X. 2017. Effects of carboxymethyl cellulose incorporated with garlic essential oil composite coatings for improving quality of strawberries. Int. J. Biol. Macromol., 104, 821-826.
Du, J., Gemma, H. and Iwahori, S. 1997. Effects of chitosan coating on the storage of peach, Japanese pear, and kiwifruit. J. Jpn. Soc. Hortic. Sci., 66(1), 15-22.
Duan, J., Wu, R., Strik, B. C. and Zhao, Y. 2011. Effect of edible coatings on the quality of fresh blueberries (Duke and Elliott) under commercial storage conditions. Postharvest Biol. Tec., 59(1), 71-79.
Flores-Lopez, M. L., Cerqueira, M. A., de Rodriguez, D. J. and Vicente, A. A. 2016. Perspectives on utilization of edible coatings and nano-laminate coatings for extension of postharvest storage of fruits and vegetables. Food Eng Rev., 8(3), 292-305.
Guerreiro, A. C., Gago, C. M., Faleiro, M. L., Miguel, M. G. and Antunes, M. D. 2015. The effect of alginate-based edible coatings enriched with essential oils constituents on Arbutus unedo L. fresh fruit storage. Postharvest Biol. Tec., 100, 226-233.
Harker, F. R., Redgwell, R. J., Hallett, I. C., Murray, S. H. and Carter, G. 2010. Texture of fresh fruit. Hortic Rev., 20, 121-224.
Irigoyen, J., Einerich, D. and Sanchez‐Diaz, M. 1992. Water stress induced changes in concentrations of proline and total soluble sugars in nodulated alfalfa (Medicago sativd) plants. Physiol. Plant. 84(1), 55-60.
Javanmard, M. 2008. Shelf life of whey protein-coated pistachio kernel (Pistacia Vera L.). J. Food Process Eng. 31(2), 247-259.
Javanmard, M. and Ramazan, Y. 2009. Application of edible coatings incorporated Avishan-e Shirazi (Zalaria multiflora) alcoholic extract for inhibition of Aspergillus flavus growth on the pistachio kernel. J. Med. Plants, 8(30), 61-167.
Joshi, A. V., Baraiya, N. S., Vyas, P. B. and Rao, T. R. 2017. Gum Ghatti Based Edible Coating Emulsion with an Additive of Clove Oil Improves the Storage Life and Maintains the Quality of Papaya (Carica papaya L., cv. Madhu bindu). IJCMAS, 6(5), 160-174.
Khaliq, G., Mohamed, M., Ding, P., Ghazali, H. and Ali, A. 2016. Storage behaviour and quality responses of mango (Mangifera indica L.) fruit treated with chitosan and gum arabic coatings during cold storage conditions. Int. Food Res. J. 23, S141-S148.
Khaliq, G., Mohamed, M. T. M., Ali, A., Ding, P. and Ghazali, H. M. 2015. Effect of gum arabic coating combined with calcium chloride on physico-chemical and qualitative properties of mango (Mangifera indica L.) fruit during low temperature storage. Sci. Hort., 190, 187-194.
Lemoine, M. L., Civello, P. M., Chaves, A. R. and Martinez, G. A. 2008. Effect of combined treatment with hot air and UV-C on senescence and quality parameters of minimally processed broccoli (Brassica oleracea L. var. Italica). Postharvest Biol. Tec., 48(1), 15-21.
Li, Z. and Thomas, C. 2014. Quantitative evaluation of mechanical damage to fresh fruits. Trends Food Sci. Technol., 35(2), 138-150.
Lin, B., Du, Y., Liang, X., Wang, X., Wang, X. and Yang, J. 2011. Effect of chitosan coating on respiratory behavior and quality of stored litchi under ambient temperature. J. Food Eng., 102(1), 94-99.
Maftoonazad, N., Ramaswamy, H. S. and Marcotte, M. 2008. Shelf‐life extension of peaches through sodium alginate and methyl cellulose edible coatings. Int. J. Food Sci. Technol. 43(6), 951-957.
Moreira, M. R., Cassani, L., Martin-Belloso, O. and Soliva-Fortuny, R. 2015. Effects of polysaccharide-based edible coatings enriched with dietary fiber on quality attributes of fresh-cut apples. J. Food Sci. Tech., 52(12), 7795-7805.
Nair, M. S., Saxena, A. and Kaur, C. 2018. Effect of chitosan and alginate based coatings enriched with pomegranate peel extract to extend the postharvest quality of guava (Psidium guajava L.). Food Chem., 240, 245-252.
Oregel-Zamudio, E., Angoa-Perez, M. V., Oyoque-Salcedo, G., Aguilar-González, C. N. and Mena-Violante, H. G. 2017. Effect of candelilla wax edible coatings combined with biocontrol bacteria on strawberry quality during the shelf-life. Sci. Hort., 214, 273-279.
Ozturk, I., Sagdic, O., Yalcin, H., Capar, T. D. and Asyali, M. H. 2016. The effects of packaging type on the quality characteristics of fresh raw pistachios (Pistacia vera L.) during the storage. LWT, 65, 457-463.
Raybaudi-Massilia, R. M., Mosqueda-Melgar, J. and Martín-Belloso, O. 2008. Edible alginate-based coating as carrier of antimicrobials to improve shelf-life and safety of fresh-cut melon. Int. J. Food Microbiol. 121(3), 313-327.
Rojas-Grau, M. A., Raybaudi-Massilia, R. M., Soliva-Fortuny, R. C., Avena-Bustillos, R. J., McHugh, T. H. and Martin-Belloso, O. 2007. Apple puree-alginate edible coating as carrier of antimicrobial agents to prolong shelf-life of fresh-cut apples. Postharvest Biol. Tec., 45(2), 254-264.
Rojas-Grau, M. A., Tapia, M. S. and Martin-Belloso, O. 2008. Using polysaccharide-based edible coatings to maintain quality of fresh-cut Fuji apples. LWT, 41(1), 139-147.
Rojas‐Grau, M., Oms‐Oliu, G., Soliva‐Fortuny, R. and Martin‐Belloso, O. 2009. The use of packaging techniques to maintain freshness in fresh‐cut fruits and vegetables: a review. Int.J. Food Sci. Tech., 44(5), 875-889.
Shakerardekani, A., Hashemi, M. & Mirzaalian Dastjerdi, A. (2019). Effect of Arabic gum coating enriched with Shirazi thyme essential oil on quality characteristics of fresh pistachio (Pistacia vera L cv. Ahmad-Aghaghi). FSCT, 16(87), 113-126.
Shakerardekani, A., 2017. Consumer acceptance and quantitative descriptive analysis of pistachio spread. JAST, 19(1), 85-95.
Shakerardekani, A., Karim, R., Ghazali, H. M. and Chin, N. L. 2013. Textural, rheological and sensory properties and oxidative stability of nut spreads-a review. Int. J. Mol. Sci. , 14(2), 4223-4241.
Stone, H., 2012. Sensory evaluation practices: Academic press.
Tavassoli-Kafrani, E., Shekarchizadeh, H. and Masoudpour-Behabadi, M. 2016. Development of edible films and coatings from alginates and carrageenans. Carbohydr. Polym. 137, 360-374.
Valero, D., Diaz-Mula, H. M., Zapata, P. J., Guillen, F., Martínez-Romero, D., Castillo, S. and Serrano, M. 2013. Effects of alginate edible coating on preserving fruit quality in four plum cultivars during postharvest storage. Postharvest Biol. Tec., 77, 1-6.
Vishwasrao, C. and Ananthanarayan, L. 2016. Postharvest shelf-life extension of pink guavas (Psidium guajava L.) using HPMC-based edible surface coatings. J. Food Sci. Tech., 53(4), 1966-1974.
Yousuf, B., Qadri, O. S. and Srivastava, A. K. 2018. Recent developments in shelf-life extension of fresh-cut fruits and vegetables by application of different edible coatings: A review. LWT, 89, 198-209.
Journal of Agricultural Science and Technology
Volume 23, Issue 1
January and February 2021
Pages 65-82