In vitro digestibility of phenolic compounds from edible fruits: could it be explained by chemometrics?

Summary The health benefits of phenolic compounds depend on the ingested amount, molecular diversity and gastrointestinal digestibility. The phenolic profile of eight fruits (blackberry, blueberry, strawberry, raspberry, mulberry, pomegranate, green and red globe grapes) was chemometrically associat...

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Bibliographic Details
Published in:International journal of food science & technology 2017-09, Vol.52 (9), p.2040-2048
Main Authors: Olivas‐Aguirre, Francisco J., Gaytán‐Martínez, Marcela, Mendoza‐Díaz, Sandra O., González‐Aguilar, Gustavo A., Rodrigo‐García, Joaquín, Martínez‐Ruiz, Nina del Rocío, Wall‐Medrano, Abraham
Format: Article
Language:English
Subjects:
Anthocyanins
Antioxidant
berries
Chemometrics
Cluster analysis
Digestibility
Flavonoids
Fruits
Grapes
hierarchical clustering
In vitro methods and tests
Intestine
in vitro digestion
pH effects
Phenolic compounds
Phenols
principal component analysis
Proanthocyanidins
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Summary:Summary The health benefits of phenolic compounds depend on the ingested amount, molecular diversity and gastrointestinal digestibility. The phenolic profile of eight fruits (blackberry, blueberry, strawberry, raspberry, mulberry, pomegranate, green and red globe grapes) was chemometrically associated with their in vitro digestibility (oral, gastric, intestinal). Extractable phenols, flavonoids and anthocyanins strongly correlated with each other (r ≥ 0.84), proanthocyanidins with anthocyanins (r = 0.62) and hydrolysable phenols with both extractable phenols (r = 0.45) and proanthocyanidins (r = −0.54). Two principal components explained 93% of the variance [61% (free‐phenols), 32% (bounded‐phenols)], and four clusters were confirmed by hierarchical analysis, based in their phenolic richness (CLT 1‐4: low to high) and molecular diversity. In vitro digestibility of extractable phenols and flavonoids was blackberry (CLT‐4)> raspberry (CLT‐2)> red grape (CLT‐1) related to their phenolic richness (r ≥ 0.96; P 
ISSN:0950-5423
1365-2621
DOI:10.1111/ijfs.13482