Effect of Polyphenol Supplementation on Milk Composition and Fatty Acid of Dairy Animal: A Systematic Review
2025
Nur Liyana Akmal Harun | Hidayat Mohd Yusof | Anjas Asmara Samsudin | Awis Qurni Sazili | Yong-Meng Goh
The aim of this study is to review the supplementation of polyphenol on milk composition and milk fatty acid content in dairy animal. A systematic review of literature was carried out by using Google Scholar, Scopus, and Science Direct databases. The PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) guidelines methodology was carried out and as a result, 21 articles were included. Results showed that polyphenol supplementation significantly affect milk saturated fatty acid content (<i>p</i> < 0.00001) and milk medium-chain fatty acid content (<i>p</i> < 0.0001). Meanwhile, polyphenol supplementation effects significantly in the subgroup of agro-industrial by-products (<i>p</i> < 0.05) for milk protein content, grain (<i>p</i> < 0.05) for milk lactose content, all the subgroup for milk saturated fatty acid content and both grain and agro-industrial by-products for milk medium-chain fatty acid content. In conclusion, milk saturated fatty acid is affected by polyphenol supplementation regardless of polyphenol sources. However, it is recommended to include more studies in future to obtained a higher heterogeneity.
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