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Grape Pomace: A Potential Ingredient for the Human Diet.
Paula Pereira1,2, Carla Palma3, Cíntia Ferreira-Pêgo1
1CBIOS-Universidade Lusófona's Research Center for Biosciences & Health Technologies, Campo Grande 376, 1749-024 Lisboa, Portugal.
Grape pomace, a winemaking byproduct, offers nutritional and bioactive benefits for human health. Its characterization revealed safe levels for food production, except for arsenic, which requires careful consideration for daily intake limits.
Area of Science:
- Food Science
- Nutritional Science
- Environmental Science
Background:
- Wine production generates substantial waste, primarily grape pomace.
- Grape pomace is a rich source of bioactive compounds with potential health benefits.
- Reusing grape pomace can reduce pollution and enhance nutritional ingredients.
Purpose of the Study:
- To characterize eight different grape pomaces for potential use in human nutrition.
- To assess the nutritional and safety profile of grape pomace.
- To evaluate compliance with European Commission regulations for food ingredients.
Main Methods:
- Analysis of ash content, relative ash, moisture, and pH.
- Microbiological examination.
- Quantification of metals (Al, Cd, Cr, Cu, Fe, Hg, Li, Mn, Ni, Pb, Zn) and semi-metal (As).
Main Results:
- Comprehensive characterization of grape pomace composition was performed.
- Arsenic content was identified as a limiting factor for daily intake.
- Results indicate potential for grape pomace inclusion in food production within regulatory limits.
Conclusions:
- Grape pomace is a valuable byproduct with significant nutritional and health potential.
- Careful management of arsenic levels is crucial for safe incorporation into foodstuffs.
- Utilizing grape pomace aligns with sustainable practices and future food innovation.
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