Abstract
ABSTRACT Cupuaçu (Theobroma grandiflorum Schum.) is an exotic fruit with a promising economic potential, particularly due to its strong aroma and creamy texture. This study aimed to produce sweetened cupuaçu puree and evaluate the effects of packaging corrosion on its sensory properties and shelf-life in tinplated cans. After 240 days of storage, the commercially sterile product had average sensory analysis scores of 5.89 ± 0.21, 5.39 ± 0.30, 5.45 ± 0.21 and 5.49 ± 0.25, for appearance, aroma, flavor and overall appreciation, respectively. Sensory acceptance scores did not change during storage (p>0.05). Corrosion potential and low tin and iron levels in the product, which are parameters used to evaluate food-packaging interaction, demonstrated the product remained food-safe throughout its shelf-life. Tinplate is a promising packaging material for sweetened cupuaçu puree due to its mechanical and protective properties. Furthermore, tin plating is an economically viable food technology to extend the shelf-life of cupuaçu products and expand its domestic and international markets.
Highlights
Brazil is the third largest fruit producer and fifteenth ranked exporter in the agroindustry
The results indicated that the structure of the TCI and TCII tin cans did not affect the sensory acceptances of sweetened cupuaçu puree, despite the migration of tin and iron
Considering the detachment of lacquer observed at 180 days of storage, it is recommended that manufacturers improve the quality of the lacquer coating, the adhesion and minimization of pinholes
Summary
Brazil is the third largest fruit producer and fifteenth ranked exporter in the agroindustry. According to Oliveira et al (2012), Brazilian plant produce is not optimally exploited. Cupuaçu (Theobroma grandiflorum Schum.) is an Amazonian fruit native to the region’s rain forests (SANTOS et al, 2002). In addition to its domestic market potential, this fruit has been considered for international export, to Europe (BASTOS et al, 2002; COSTA et al, 2003; SANTOS et al, 2010). Pará state is Brazil’s main cupuaçu producer (approximately 41,142 tons in 2010). Only 15% of cupuaçu production is exported, while 15% meets the local demand and 70% is sold in other Brazilian states. Its annual exports are growing, with a 241% increase from 2000 to 2010 (SAGRI, 2012)
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