Volume 60, Issue 2, Part 1, March 2015, Pages 855–859
Exquisite wild mushrooms as a source of dietary fiber: Analysis in electron-beam irradiated samples
Highlights
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- Electron-beam irradiation was applied to Boletus edulis and Macrolepiota procera.
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- The effects on fiber composition were assessed.
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- Higher doses changed the total available carbohydrates and dietary fibers content.
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- The differences still allow considering these species as good natural fiber sources.
Abstract
In the present study, electron-beam irradiation was applied to dried samples of Boletus edulis and Macrolepiota procera
to evaluate the effects on their fiber composition. Both species
presented an important percentage of dietary fiber, soluble and
insoluble in different ratios. These high fiber levels are an
interesting feature, allowing considering mushrooms as an alternative
source of dietary fibers in the highly competitive market of
fiber-enriched food products. In B. edulis samples, insoluble
fiber and total fiber amounts were significantly lower in samples
irradiated with 10 kGy, but soluble fiber had no significant changes for
any of the assayed doses, while total available carbohydrates were
significantly lower in unirradiated samples. M. procera samples
irradiated with 6 kGy presented less total fiber, insoluble fiber and
carbohydrates, but the same dose allowed the highest contents in soluble
dietary fiber. In general, the irradiated samples, especially for
higher doses, gave some significant changes in the total available
carbohydrates and dietary fibers content. Nevertheless, the resulting
differences still allow considering these species as good natural fiber
sources, maintaining their potential health effects, while promoting a
clean way to disinfest and decontaminate these highly perishable
products.
Keywords
- Wild mushrooms;
- Electron-beam;
- Soluble/Insoluble dietary fiber
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