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Influence of green, white and black tea addition on the antioxidant activity of probiotic yogurt during refrigerated storage

Paper ID Volume ID Publish Year Pages File Format Full-Text
19804 43131 2016 8 PDF Available
Title
Influence of green, white and black tea addition on the antioxidant activity of probiotic yogurt during refrigerated storage
Abstract

•Green tea yogurt showed the highest phenolic content followed by white tea yogurt and black tea yogurt.•Green tea extract showed the highest antioxidant activity followed by white tea extract and black tea extracts.•All the three types of tea yogurts had higher antioxidant potentials than control.•Black tea yogurt showed the lowest antioxidant activity during 21 days of storage.

The present study investigated the effect of green, white or black tea (Camellia sinensis) on the fermentation of milk and antioxidant potential of yogurt during 21 days of storage at 4 °C. All yogurts were analyzed for total phenolic content (TPC), identification of phenolic compounds and antioxidant potential using diphenyl picrylhydrazyl radical scavenging (DPPH), ferric reducing antioxidant power (FRAP) and ferrous ion chelating (FIC) assays. Green tea yogurt showed the highest phenolic content (p < 0.05) followed by white tea yogurt and black tea yogurt. LCMS/MS analysis revealed the absence of several phenolic compounds in tea yogurts, despite their presence in tea water extracts, as well as the presence of new phenolic compounds. All tea yogurts showed higher (p < 0.05) FRAP and FIC values than respective control during 21 days of storage. However, BTY showed the lowest values of DPPH scavenging activity and FRAP during storage period. In addition, the antioxidant activity for all tea yogurts remained almost constant over storage period. In conclusion, green, white and black tea can be successfully employed to improve the antioxidant properties of yogurt and provide sustained antioxidants during storage.

Keywords
Catechin (PubChem CID: 9064); p-Coumaroylquinic acid (PubChem CID: 90478782); Kaempferol-3-rutinoside (PubChem CID: 5318767); Gallic acid (PubChem CID: 370); Quinic acid (PubChem CID: 6508); Epicatechin (PubChem CID: 72276); Epigallocatechin (PubChem CID:
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Influence of green, white and black tea addition on the antioxidant activity of probiotic yogurt during refrigerated storage
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Publisher
Database: Elsevier - ScienceDirect
Journal: Food Packaging and Shelf Life - Volume 8, June 2016, Pages 1–8
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us