Fractionation of linseed and obtaining ingredients rich in protein and fibers: alternatives for animal feed

Abstract

BACKGROUND: Linseed fractionation was performed in laboratory scale to obtain concentrated protein and fiber fractions. Three methods were tested to obtain the linseed protein concentrate (LPC). The isoelectric pH method was more efficient in increasing the protein content and also provided higher yield. In the fractions obtained, the chemical composition (dry matter, ash, lipids, crude protein, total dietary fiber, calcium and phosphorus), total phenolic compounds and the physicochemical properties were evaluated. The profile of amino acids was determined for linseed meal and LPC, and the profile of monosaccharides was evaluated for linseed grain, soluble and insoluble fractions of the fiber. RESULTS:The results indicated that the protein concentration method by isoelectric pH improved the amino acidic profile and in vitro digestibility of LPC. The fractioning of the linseed fiber was efficient, since the soluble fiber of the soluble fraction corresponded to 675 g kg −1 . The separation of the fiber from the linseed concentrated the phenolic compounds in the insoluble fraction. For linseed grain there was a higher concentration of glucose, followed by xylose, galacturonic acid and arabinose. The same monosaccharides were identified in the insoluble fraction, with the exception of arabinose. In the soluble fraction, higher levels of xylose were found, followed by glucose, galacturonic acid and arabinose.CONCLUSION: The present study allows us to conclude that it is possible to separate the linseed into different fractions, obtaining a protection concentrate and fibers. The inclusion of these products in animal feed needs to be evaluated to determine levels of acceptance.

Co-Extraction of Flaxseed Protein and Polysaccharide with a High Emulsifying and Foaming Property: Enrichment through the Sequence Extraction Approach

“…Glucose was the most major monosaccharide form for fractions 1, 2, 4, and 5, which was in accord with the results reported by Adorian et al [ 26 ], in which the content of glucose in flaxseed meal was the highest. This monosaccharide composition was different from some reports, mainly because the composition of flaxseed polysaccharide from different regions and gene sources showed a difference [ 27 ].…”

Contribution of Arbuscular Mycorrhizal Fungi (AMF) in Improving the Growth and Yield Performances of Flax (Linum usitatissimum L.) to Salinity Stress

“…Additionally, these fibers are used in the paper industry and, interestingly, in the production of banknotes [6]. It is notable that flax seeds contain a variety of bioactive compounds, including alpha-linolenic acid (ALA), proteins, and lignans, which make them a valuable source of nutrition for both humans and animals [7,8]. Flaxseeds can be consumed as whole grains or as ground powders [9] and are high in oil (40%) [5,10].…”

Anais Do Ii Congresso Norte-Nordeste De Ciências Agrárias (On-Line) - Resumo Simples E Expandido

“…Por fim, há ainda a tecnologia de obtenção de CPL sugerida por Kowalski (2021), que consiste na extração da mucilagem através da suspensão dos grãos de linhaça em água com o uso de misturador giratório, com extração de fibras insolúvel (GOULART et al, 2013;ADORIAN et al, 2021), extração da gordura com hexano e concentração proteica por dispersão em triturador de facas e secagem em spray dryer. O autor obteve teor de proteína no concentrado foi de 42,33%, com rendimento médio de extração de 7,72%.…”