AI Article Synopsis
- The study examines the bioactive substances in grapevine by-products, focusing on phenolic compounds (PCs) that have health benefits based on their intake levels and bioavailability.
- The research conducted in-vitro simulated gastrointestinal digestion to assess how much of the PCs from Malbec grapevine bunch stems and canes are bioaccessible and their antioxidant capacity.
- Results showed that grapevine cane extracts had a significantly higher bioaccessibility of PCs (74%) compared to the bunch stem extracts (20%), with certain compounds like ε-viniferin showing particularly high levels of bioaccessibility, making these by-products valuable for use in food and pharmaceuticals.
Article Abstract
Grapevine woody by-products contain bioactive substances, mainly phenolic compounds (PCs), whose beneficial health effects initially depends on their levels of intake and bioavailability. Therefore, in-vitro simulated gastrointestinal digestion (GID; oral, gastric and intestinal phases) was performed to evaluate the bioaccessibility and antioxidant capacity (AC) of PCs extracts recovered from grapevine bunch stem and cane from Malbec grape cultivar. The total PCs in cane and bunch stem extracts were 74 and 20% bioaccessible, respectively. Syringic acid, cinnamic acid, ε-viniferin, naringenin and myricetin were highly bioaccessible, noticeably ε-viniferin in cane extract with 137%. The high bioaccessibility observed, particularly for compounds at high concentration such as ε-viniferin, will help to better understand the bioactive potential of these by-products. In this sense, bunch stems and canes can be considered as new and sustainable sources of bioactive substances for applications as functional ingredients or nutraceuticals in food and pharmaceutical industries.
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| http://dx.doi.org/10.1016/j.foodchem.2021.129063 | DOI Listing |
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