Influence of Different Chemical Preservatives on the Quality Attributes of Mango Loquat Blended Pulp at Ambient Conditions
Influence of Different Chemical Preservatives on the Quality Attributes of Mango Loquat Blended Pulp at Ambient Conditions
Rukhsar Ali* and Ali Muhammad
ABSTRACT
Storage stability of mango and loquat blended pulp was conducted to study the effect of selected food chemical preservatives i.e. sodium benzoate (SB), potassium metabisulphite (KMS) and potassium sorbate (PS) on physicochemical qualities (total soluble solids, pH, acidity, phenolic compounds, total sugars, antioxidant activity, Vitamin C content) and sensory evaluation as color, taste, and overall acceptability stored at ambient conditions (25±2⁰C) for six months with twenty days interval. Based on sensory analysis, the best suitable blend was selected within different ratios of mango pulp and loquat pulp. The blended pulp with ratio (60:40) got the highest mean score of judges for overall acceptability which used for further study. The different treatments were included in this study as MLBPr0 was control with no preservatives, MLBPr1 having 0.1% PS, MLBPr2 having 0.1% KMS, MLBPr3 having 0.1% SB, MLBPr4 having 0.05% PS and 0.05% KMS), MLBPr5 having 0.05% PS and 0.05% SB), MLBPr6 has 0.05% KMS and 0.05% S.B), and MLBPr7 having 0.033% PS+ 0.033% KMS and 0.033% SB). The results highlighted that values of antioxidant activity, total phenolic compounds, and ascorbic acid were found decrease, while total soluble solids and titratable acidity showed an increase during storage. Control sample without preservatives (MLBPr0) blemished within one month of storage period. Different treatments preserved with food chemical preservatives were statistically significant during storage period of six months at (p <0.05). From this research work, it has been accomplished that the effect of collective dosage of chemical food preservatives i.e. 0.033% PS, 0.033% SB, and 0.01% KMS on treatment MLBPr7 and MLBPr6 of mango loquat blended pulp samples were more suitable for enhancing the overall quality of blended pulp and showed maximum stability in physiochemical study and over-all acceptability as compared to other treatments during entire storage.
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June 2021
Vol. 37, Iss. 2, Pages 331-713
