| 1. |
- Blancas-Benitez, Francisco J., et al.
(författare)
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Indigestible fraction of guava fruit : Phenolic profile, colonic fermentation and effect on HT-29 cells
- 2022
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Ingår i: Food Bioscience. - : Elsevier BV. - 2212-4292. ; 46
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Tidskriftsartikel (refereegranskat)abstract
- Guava fruit is rich in phenolic compounds (PCs), whose metabolic fate has not been explored. Non-digestible carbohydrates and PCs in whole guava (WG) and seedless guava (SG) were submitted to an in vitro colonic fermentation, followed by evaluation of the anti-proliferative activity of the fermentation extracts in HT-29 cancer cell lines. The main PCs in both samples were (+)-gallocatechin and gallic acid, while procyanidin B was the most abundant one associated with soluble indigestible fraction and quercetin predominated in the insoluble indigestible fraction. The fermentability index at 24 h was 78.84% in WG and 84.74% for SG, near to the value for raffinose used as reference, with butyric acid as the main short chain fatty acids (SCFA) produced. The greatest antiproliferative effects were observed in the SG at 12 h of fermentation and WG at 24 h of fermentation. These results allow to suggest consumption of guava fruit, either with or without seeds, as a feasible way to maintain colonic health.
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| 2. |
- Hernández-Maldonado, Luz M, et al.
(författare)
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In Vitro Gastrointestinal Digestion and Colonic Fermentation of High Dietary Fiber and Antioxidant-Rich Mango (Mangifera indica L.) "Ataulfo"-Based Fruit Bars
- 2019
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Ingår i: Nutrients. - : MDPI AG. - 2072-6643. ; 11:7
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Tidskriftsartikel (refereegranskat)abstract
- Mango (Mangifera indica L.) is a tropical fruit which is considered to be a source of dietary fiber (DF) and phenolic compounds (PCs). In this study, high DF mango-based fruit bars were developed from whole mango (peel and pulp). The bars were evaluated for their nutritional composition, the bioaccesibility of PCs during gastrointestinal digestion, and the PCs metabolites profile after in vitro colonic fermentation. The amount of DF in a 30 g portion of mango bars was 9.5 g, i.e., 35% of the recommended daily intake. Phenolic acids such as gallic acid; cinnamic acids, such as ferulic, coumaric, and caffeic acids; flavonoids such as quercertin; and xanthones such as mangiferin and mangiferin gallate, were identified as the main PCs in the bars. The antioxidant capacity associated with the PCs profile, together with the high DF content are indicative of the potential functional features of these natural fruit bars. The bioaccesibility of PCs in the mango bar was 53.78%. During fermentation, the PCs were bioconverted mainly to hydroxyphenolic acids and the main short-chain fatty acid produced was acetic acid. The xanthone norathyriol was identified after 12 h of fermentation. This study on the digestion and colonic fermentation of mango-based bars using in vitro models provides hints of the potential physiological behavior of PCs associated with DF, which constitutes relevant information for further development of natural and health-promoting fruit-based bars.
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| 3. |
- Ramirez-Maganda, James, et al.
(författare)
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Nutritional properties and phenolic content of a bakery product substituted with a mango (Mangifera indica) 'Ataulfo' processing by-product
- 2015
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Ingår i: Food Research International. - : Elsevier BV. - 0963-9969. ; 73, s. 117-123
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Tidskriftsartikel (refereegranskat)abstract
- Wheat flour and cane sugar were partially substituted (50 and 75%) by a mango-processing by-product (MPB) as an added-value food ingredient in muffins. Their sensory analysis, chemical composition, antioxidant activity and in vitro starch hydrolysis properties were studied. Sensory analysis showed statistically significant difference (p < 0.05) between control and muffins 75% MPB substituted level (p < 0.05) with the highest score. Proximate analysis revealed that muffins substituted with MPB had significantly (p < 0.05) higher moisture, ash, soluble, insoluble and total indigestible fraction contents but lower total soluble carbohydrates and available starch contents than a non-substituted (control) muffin. Total soluble polyphenol (TSP) content increased about three times (from 1.86 to 5.36 g GAE/100 g dw) with MPB substitution. Chlorogenic, caffeic, gallic, hydroxycinnamic and ferulic acids were identified as major TSP. Muffins with MPB, exhibited better antioxidant properties (104.0 to 108.5 mu mol TE/g dw for DPPH assay and 34.1 to 19.1 mmol TE/g dw for FRAP assay) than the control formulation. The presence of high phenolic and insoluble indigestible fraction contents, which may be responsible of the lower rate of starch hydrolysis observed in muffins prepared with MPB, might modulate the postprandial glucose response in vivo. MPB may be used as an ingredient in foods with add-value with potential health-promoting features, besides providing a solution to the environmental problems associated with the disposal of mango by-products. (C) 2015 Elsevier Ltd. All rights reserved.
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| 4. |
- Sayago-Ayerdi, Sonia G., et al.
(författare)
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Resistant starch in common starchy foods as an alternative to increase dietary fibre intake
- 2011
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Ingår i: Journal of Food and Nutrition Research. - 1336-8672. ; 50:1, s. 1-12
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Forskningsöversikt (refereegranskat)abstract
- Nutritional classification of dietary saccharides considers as indigestible saccharides those that are incompletely or not absorbed in small intestine. Resistant starch (RS) as a part of dietary fibre (DF) is a type of indigestible saccharide. The addition of natural RS from some fruits, legumes or cereals to commonly eaten starchy foods is a good alternative to increase the DF intake representing, at the same time, new uses for uncommon sources of DF. This review deals with RS contents of commonly consumed starchy foods and shows their potential health-beneficial properties in situations where glucose tolerance is impaired, such as diabetes mellitus or obesity. For example, the current daily intake (193 g per day, fresh basis) of maize-tortilla in Mexico represents 1.8g RS. However, tortilla prepared by blending maize with flaxseed (20%) exhibits a notably higher RS content (8.5 g per day). These staple foods added with natural RS sources show low or moderate in vitro starch hydrolysis rates and predicted glycaemic indices. Current nutritional and technological trends include the development of new formulas for traditionally consumed products. The combination of starchy foods with high RS content and/or the addition of natural RS sources to common food products could help to reach this objective.
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