Abstract
Abstract In the present study, the physicochemical properties and mineral composition of commercially-frozen soursop pulps from the southern region of the state of Bahia, Brazil, were evaluated. The physicochemical parameters such as soluble solids (°Brix), acidity and pH were determined according to reference methodologies. For mineral composition evaluation, samples were digested in a closed microwave system and the elements K, P, S, Ca, Mg, Fe, Cu, Zn, and Mn were quantified through inductively coupled plasma optical emission spectrometry (ICP OES). Soluble solids content ranged from 4.77 to 15.37 °Brix among the different brands of analyzed frozen pulps. Titratable acidity (equivalent to citric acid) and pH ranged from 0.49 to 1.00 and 3.61 to 4.57, respectively. Some samples presented irregularities in regard to quality pattern established in the Brazilian legislation. The following range of concentration, in μg g-1, were found for essential elements: K (544-1761), P (44.3-139), S (71.8-174), Ca (24.3-77.0), Mg (47.2-132), Fe (1.40-4.05), Mn (0.32-1.22), Cu (0.30-0.88) and Zn (0.36-0.84). The use of principal component analysis (PCA) enabled a more in-depth data analysis, performing correlations between different variables and frozen pulp brands.
Highlights
Soursop (Annona muricata L.) is a native species from tropical areas of North and South America, but can currently be found in Asia, Africa and American countries (Coria‐Téllez et al, 2018; Moghadamtousi et al, 2015)
Considering the economic importance and wide consumption of frozen fruit pulps in the state of Bahia (Brazil), the present study aims to evaluate the physicochemical properties and mineral composition of frozen soursop pulps marketed in the southern region of the state of Bahia
A data matrix composed of 13 columns and 117 rows corresponding to frozen pulp samples were obtained (Table S2)
Summary
Soursop (Annona muricata L.) is a native species from tropical areas of North and South America, but can currently be found in Asia, Africa and American countries (Coria‐Téllez et al, 2018; Moghadamtousi et al, 2015). Soursop pulp is defined as the unfermented and undiluted product with minimum total solids content, obtained from the edible part of the fruit using appropriate technological processes. Brazilian legislation establishes that the fruits used in frozen pulp production must always be healthy, clean and free of parasites and animal or vegetable waste (Brasil, 2000). The pleasant taste of the fruit makes frozen soursop pulp a product of high acceptance by consumers. Brazil’s Ministry of Agriculture, Livestock, and Supply (Brasil, 2000) regulates the identity and quality pattern for soursop pulp production, aiming to ensure final product quality. According to the Brasil (2000), the minimum value for the titratable acidity of frozen soursop pulp (in citric acid, g 100g-1) must be 0.6. Regarding pH and soluble solids content, the established minimum values are 3.50 and 9.0 °Brix, respectively
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