Effect of chitosan-olive oil emulsion coating on quality of tomatoes during storage at ambient conditions

BACKGROUND: Tomato, a berry with a high nutritional content, is one of the most important vegetables due to its commercial importance, easy manipulation and rapid production cycle. The application of biodegradable films and coatings as alternative preservation method, provides a protective layer and creates a modified atmosphere in the fruit. OBJECTIVE: The aim of the present study was to evaluate the influence of chitosan-olive oil coatings on the quality of tomatoes cv. Charleston during their storage at 27 ± 1◦C and 80% RH. METHODS: According with the treatments, chitosan at 1 and 2% (w/v) in 1% (v/v) of lactic acid was dissolved by stirring during 2 h at 40◦C and then was emulsified with olive oil at 2 and 4% (v/v). RESULTS: Tomatoes coated with chitosan at 2% (w/v) with 2 and 4% (v/v) of olive oil presented the higher weight losses. CONCLUSIONS: Coatings from chitosan-olive oil emulsion delayed the ripening and maintained the firmness of tomatoes cv. Charleston with respect to uncoated fruits during storage, although these coatings did not act as an effective barriers against the weight loss. These results can be helpful for horticulturists and agro-food products distributors, as well as for the postharvest technologists.

[1]  Alicia Casariego,et al.  Effect of edible chitosan/zeolite coating on tomatoes quality duringrefrigerated storage , 2014 .

[2]  Alicia Casariego,et al.  Effects of Aloe vera coating on postharvest quality of tomato , 2014 .

[3]  Haiyan Gao,et al.  Effect of chitosan-based edible coating on antioxidants, antioxidant enzyme system, and postharvest fruit quality of strawberries (Fragaria x aranassa Duch.) , 2013 .

[4]  Abraham Gastélum,et al.  Tomato quality evaluation with image processing: A review , 2011 .

[5]  Elia Cruz Crespo.  Mezclas de vermicompost y tezontle, diseñadas mediante un programa de optimización en SAS, para el cultivo de tomate bajo invernadero e hidroponía. , 2010 .

[6]  I. Vroman,et al.  Biodegradable Polymers , 2009, Materials.

[7]  K. Woldetsadik,et al.  The effect of cultivar, maturity stage and storage environment on quality of tomatoes , 2008 .

[8]  Chieri Kubota,et al.  Effects of high electrical conductivity of nutrient solution and its application timing on lycopene, chlorophyll and sugar concentrations of hydroponic tomatoes during ripening , 2008 .

[9]  Mario García.  Películas y cubiertas de quitosana en la conservación de vegetales , 2008 .

[10]  A. Krumbein,et al.  Long-term response of tomato plants to changing nutrient concentration in the root environment-the role of proline as an indicator of sensory fruit quality. , 2006, Plant science : an international journal of experimental plant biology.

[11]  Amparo Chiralt,et al.  Quality of cold-stored strawberries as affected by chitosan–oleic acid edible coatings , 2006 .

[12]  W. Schnitzler,et al.  The influence of different electrical conductivity values in a simplified recirculating soilless system on inner and outer fruit quality characteristics of tomato. , 2006, Journal of agricultural and food chemistry.

[13]  R. Tharanathan,et al.  Properties of chitosan films prepared under different drying conditions , 2004 .

[14]  V. Gekas,et al.  Factors Affecting Quality and Postharvest Properties of Vegetables: Integration of Water Relations and Metabolism , 2004, Critical reviews in food science and nutrition.

[15]  H. Ramírez,et al.  Influencia de la temperatura sobre procesos fisiológicos en postcosecha de tomate (Lycopersicon esculentum Mill.) , 2004 .

[16]  C. Kubota,et al.  EFFECTS OF NUTRIENT SOLUTION EC, PLANT MICROCLIMATE AND CULTIVARS ON FRUIT QUALITY AND YIELD OF HYDROPONIC TOMATOES (LYCOPERSICON ESCULENTUM) , 2004 .

[17]  Jorge Mosset Iturraspe.  La Difusa Frontera entre lo Público y lo Privado , 2003 .

[18]  John W. Scott,et al.  Linking Sensory Descriptors to Volatile and Nonvolatile Components of Fresh Tomato Flavor , 2003 .

[19]  Yueming Jiang,et al.  Effects of chitosan coating on shelf life and quality of fresh-cut Chinese water chestnut , 2003 .

[20]  Yan Mei,et al.  Barrier and mechanical properties of milk protein-based edible films containing nutraceuticals. , 2003, Journal of agricultural and food chemistry.

[21]  V. Trejo,et al.  Estimación de la permeabilidad al vapor de agua en películas a basede quitosán , 2001 .

[22]  Carl E. Sams,et al.  Preharvest factors affecting postharvest texture , 1999 .

[23]  S. Roy,et al.  Storage performance of kinnow mandarins in evaporative cool chamber and ambient condition , 1997 .

[24]  David W. Stanley,et al.  Perspectives in the textural evaluation of plant foods , 1995 .