China Dairy ›› 2026, Vol. 0 ›› Issue (3): 148-157.doi: 10.12377/1671-4393.26.03.20

• DAIRY INDUSTRY • Previous Articles    

Study on Quality Characteristics and Antioxidant Activity during Fermentation of Highland Barley-based Yogurt

ZHU Yuting1,2, HU Yichen1, WANG Lei1, ZOU Liang2,*, REN Guixing1,2,*   

  1. 1. School of Food and Biological Engineering,Chengdu University,Chengdu Sichuan 610106;
    2. School of Life Sciences,Shanxi University,Taiyuan Shanxi 030006
  • Online:2026-03-25 Published:2026-04-09

Abstract: [Objective] To investigate the effects of fermentation time on the physicochemical properties,sensory quality,and antioxidant activity of highland barley-based yogurt,in order to determine the optimal fermentation process. [Method] Different fermentation times(6,7,8,9,10 h)were set to systematically evaluate the yogurt's pH value,titratable acidity,water holding capacity (WHC),rheological properties,total phenolic content,and antioxidant activity.Sensory evaluation and electronic tongue analysis were also conducted for comprehensive assessment. [Result] As fermentation time increased,the pH value continuously decreased,while titratable acidity increased. The WHC and rheological properties reached their optimum at 7 hours. The total phenolic content and in vitro antioxidant activity(DPPH and ABTS radical scavenging rates)increased with fermentation time and peaked at 10 hours. Sensory evaluation showed that the 7 h fermentation sample achieved the highest overall scores in color,texture,flavor,and taste. [Conclusion] The optimal fermentation time for highland barley plant-based yogurt is 7 hours,as it achieves a balance between excellent physicochemical properties,antioxidant capacity,and sensory acceptability.

Key words: Highland Barley, plant yogurt, rheological properties, antioxidant activity, lectronic tongue

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