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Physiological Properties of Dietary Ellagitannin-Rich Preparations Obtained from Strawberry Pomace Using Different Extraction Methods
 
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Publication date: 2015-09-30
 
 
Pol. J. Food Nutr. Sci. 2015;65(3):199-209
 
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ABSTRACT
The objective of this study was to establish the composition of strawberry preparations rich in ellagitannins obtained using water or acetone extraction (EF and EP preparation, respectively). Then, biological effect of these extracts was assessed in 4-wk nutritional experiment on Wistar rats. The preparations were applied in cholesterol-containing diets that had equal content of ellagitannins (0.03%). To measure the animal response, parameters describing the caecal fermentation (ammonia and short-chain fatty acid concentrations, bacterial enzymes activity), blood serum lipoprotein profile, and TBARS content in selected tissues (heart, liver, kidney) were assessed. Apart from polyphenols, including ellagitannins (7.8 and 7.1%, respectively), the EF preparation contained high quantities of soluble dietary fibre and other carbohydrates (33.3 and 38.9%, respectively), whereas the EP preparation was characterized by 58.9% content of ellagitannins, no dietary fibre and a high content of proanthocyanidins (16.9%). In comparison to EF group, the dietary treatment with EP had stronger effect on caecal environment as manifested by decreased digesta bulk, β-glucuronidase activity and total short-chain fatty acid concentration (P<0.05 vs. group C without supplementation). Both preparations lowered lipaemia and glycaemia. It could be concluded that more efficient acetone extraction of strawberry pomace increased the content of both ellagitannins and proanthocyanidins in the polyphenolic preparation, which caused a stronger inhibiting effect on caecal fermentation processes and at the same time lowered blood triacylglycerols and glucose level. Considering the equal content of ellagitannins in both supplemented diets, it may be speculated that the above effects were due to the presence of proanthocyanidin fraction.
 
CITATIONS (6):
1.
Concentrations of Blood Serum and Urinal Ellagitannin Metabolites Depend Largely on the Post-Intake Time and Duration of Strawberry Phenolics Ingestion in Rats
Ewa Żary-Sikorska, Monika Kosmala, Joanna Milala, Bartosz Fotschki, Katarzyna Ognik, Jerzy Juśkiewicz
Polish Journal of Food and Nutrition Sciences
 
2.
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María Quesada-Morua, Olman Hidalgo, Jéssica Morera, Gustavo Rojas, Ana Pérez, Fabrice Vaillant, Lidiette Fonseca
Journal of Berry Research
 
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Ellagitannins from Strawberries with Different Degrees of Polymerization Showed Different Metabolism through Gastrointestinal Tract of Rats
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Journal of Agricultural and Food Chemistry
 
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Protective Effects of Ellagitannin-Rich Strawberry Extracts on Biochemical and Metabolic Disturbances in Rats Fed a Diet High in Fructose
Bartosz Fotschki, Jerzy Juśkiewicz, Krzysztof Kołodziejczyk, Adam Jurgoński, Monika Kosmala, Joanna Milala, Katarzyna Ognik, Zenon Zduńczyk
Nutrients
 
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Berry pomace - a review of processing and chemical analysis of its polyphenols
Susanne Struck, Merichel Plaza, Charlotta Turner, Harald Rohm
International Journal of Food Science & Technology
 
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Biodiesel production from strawberry pomace seed oil
Miona Stanković, Snežana Kravić, Nebojša Stanojević, Marija Tasić, Vlada Veljković
Advanced Technologies
 
eISSN:2083-6007
ISSN:1230-0322
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