Abstract
This study for the first time used Melastoma dodecandrum Lour fruit powder (MDLP) as a novel functional ingredient for improving the quality of stirred-type yogurt (STY). Physicochemical properties, polyphenol content, antioxidant activity, textural analysis, fat globules, microstructure, and sensorial properties of MDLP-fortified STY were evaluated during storage (at 4 °C). The results indicated that MDLP significantly (p < 0.05) improved the total phenolics, flavonoids, anthocyanins, and proanthocyanidins, as well as increased the antioxidant activity of fortified yogurts compared to an STY-control. Interstitially, MDLP altered the structure of STY, making it firmer and more cohesive, increased its viscosity index, and significantly reduced whey and fat globule release compared to the STY-control during cold storage. Among all MDLP concentrations, 1% MDLP-fortified STY showed the best results followed by 0.5%. This study concluded that MDLP can be used as a potential nutritious ingredient and as a natural stabilizer for yogurt and related products.
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