Chemical composition, quality attributes and antioxidant activity of stirred-type yogurt enriched with Melastoma
Ahmed K Rashwan1,2,3, Naymul Karim2, Yang Xu2
1Department of Traditional Chinese Medicine, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou 310016, China.
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.
Related Concept Videos
Microbes in Food Production
Microbes in the Production of Fermented Foods
Probiotics
Methods of Controlling Food Spoilage
Production of Organic Acids


