期刊
APPLIED FOOD BIOTECHNOLOGY
卷 7, 期 3, 页码 135-142出版社
SHAHID BEHESHTI UNIV MEDICAL SCIENCES, FAC MED
DOI: 10.22037/afb.v7i3.26998
关键词
Anti-oxidative activity; Functional yogurt; Silybum marianum; Silymarin; Viability
Background and objective: Silybum marianum seed extract (silymarin) is rich in phenolic compounds with anti-oxidative activity that add beneficial and healthful properties to silymarinenriched products. The present study investigated effects of silymarin on characteristics of a functional yogurt. Material and methods: In this study, yogurt was enriched with Silybum marianum seed extract at concentrations of 0, 25, 50 and 100 mg l(-1) milk and the samples were analyzed for physicochemical and sensory properties and viability of starter bacteria during 21 days at 4 degrees C at 7-day intervals. Results and conclusion: Results showed that increasing silymarin proportion in yogurt samples increased anti-oxidative activity, total phenolic content, total viability of Lactobacillus delbrueckii and decreased pH value, viscosity and sensory attributes (p<0.05). Furthermore, pH, viscosity, anti-oxidative activity, phenolic compounds and sensory attributes decreased during storage (P<0.05). In conclusion, 25 mg Silybum marianum seed extract per one liter of milk can be used for the preparation of yogurts with healthy properties. Conflict of interest: The authors declare no conflict of interest.
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