Dietary pomegranate peel improves milk quality of lactating ewes: Emphasis on milk fat globule membrane properties and antioxidative traits
| Autor: | A. Shabtay, M. Yishay, Joshua Miron, Nurit Argov-Argaman, Haim Leibovich, Miri Cohen-Zinder, Harel Eitam, Ronit Mesilati-Stahy, Oren Hadaya, Rotem Agmon |
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| Rok vydání: | 2020 |
| Předmět: |
Antioxidant
medicine.medical_treatment Phospholipid 01 natural sciences Antioxidants Pomegranate Analytical Chemistry Fatty Acids Monounsaturated chemistry.chemical_compound fluids and secretions 0404 agricultural biotechnology Phosphatidylcholine medicine Animals Lactation Food science Lactose chemistry.chemical_classification Phosphatidylethanolamine Sheep Phosphatidylethanolamines 010401 analytical chemistry food and beverages Fatty acid 04 agricultural and veterinary sciences General Medicine Animal Feed 040401 food science Diet 0104 chemical sciences Milk chemistry Polyphenol Phosphatidylcholines Female Composition (visual arts) Nutritive Value Food Science |
| Zdroj: | Food Chemistry. 313:125822 |
| ISSN: | 0308-8146 |
| DOI: | 10.1016/j.foodchem.2019.125822 |
| Popis: | Concentrated pomegranate peel extract (CPE) was supplemented to ewes, and milk yield and fat content—fatty acid (FA) and phospholipid (PL) composition—were monitored. CPE-fed ewes had higher milk yield, and fat, protein and lactose contents than controls. Milk PL content—20% higher in the CPE-supplemented group—was regulated by treatment and not by total fat content; milk phosphatidylethanolamine and phosphatidylcholine increased by 22 and 26%, respectively, in CPE-supplemented vs. control ewes. Milk saturated FA concentration was higher, and total polyunsaturated and monounsaturated FA content lower in the CPE vs. control group, regardless of milk total fat content. CPE supplementation increased milk antioxidant capacity, suggesting antioxidant transfer from dietary source to milk, increasing stability and nutritive value. Our study provides first evidence for milk quality improvement in terms of antioxidants and PL enrichment without compromising total milk fat, suggesting strategies to improve dairy animals' milk composition without compromising total production. |
| Databáze: | OpenAIRE |
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