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Preparation of bioactive extracts from asparagus by-product

Paper ID Volume ID Publish Year Pages File Format Full-Text
19285 43057 2013 9 PDF Available
Title
Preparation of bioactive extracts from asparagus by-product
Abstract

Previous studies on bioactive components of asparagus have revealed that the by-products are rich in many of the phytochemicals located in the edible part of the spears. The main components responsible of asparagus bioactivity are phenols (flavonoids and hydroxycinnamic acids) and saponins. We have developed a process for obtaining added-value compounds from asparagus by-products by the hydrothermal treatment of the samples. Two fractions are separated after the hydrothermal treatment, consisting on an aqueous functional extract containing most soluble bioactive compounds from asparagus by-product, and a fibrous residue that, after being dried, constitutes the asparagus bioactive fibre. The process includes a column purification step, using an adsorbent polymeric resin, which allows aqueous extracts, partially purified to be obtained and enriched in specific compounds (phenolics and/or saponins). All these presentations have been investigated for their biological activity. The preliminary results showed that the distinct products obtained from asparagus by-products are of interest for their biological activity and are suitable for being used as functional ingredients. Based on their antioxidant capacity, it could be proposed that their regular use could help the prevention of several diseases related to the oxidative damage.

► Developing a hydrothermal process for the revalorisation of asparagus by-product. ► Chemical characterisation of asparagus by-product: functional compounds. ► Designing functional extracts and bioactive fibre from asparagus waste. ► Antioxidant capacity of asparagus compounds: prevention of several diseases.

Keywords
Asparagus by-product; Functional extracts; Phenolics; Saponins; Bioactive fibre
First Page Preview
Preparation of bioactive extracts from asparagus by-product
Publisher
Database: Elsevier - ScienceDirect
Journal: Food and Bioproducts Processing - Volume 91, Issue 2, April 2013, Pages 74–82
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering