Details

Autor(en) / Beteiligte

• Cai, Zi-zhe
• Xu, Chen-xin
• Song, Zi-liang
• Li, Jun-le
• Zhang, Ning
• Zhao, Jian-hao
• Lee, Yee-Ying
• Reaney, Martin J.T.
• Huang, Fu-rong
• Wang, Yong

Titel

A two-step method of cyclolinopeptide (linusorb) preparation from flaxseed cake via dry-screening

Ist Teil von

• Food chemistry, 2024-08, Vol.449, p.139243-139243, Article 139243

Ort / Verlag

England: Elsevier Ltd

Erscheinungsjahr

2024

Quelle

MEDLINE

Beschreibungen/Notizen

• Linusorbs (LO), cyclolinopeptides, are a group of cyclic hydrophobic peptides and considered a valuable by-product of flaxseed oil due to numerous health benefits. Currently applied acetone or methanol extraction could contaminate the feedstocks for further food-grade application. Using flaxseed cake as feedstock, this study established a practical method for preparing LO from pressed cake. Firstly, LO composition of 15 flaxseed cultivars was analyzed. Next, cold-pressed cake was milled and screened mechanically. The kernel and hull fractions were separated based on the disparity of their mechanical strength. Monitored by hyperspectral fluorescence, the LO-enriched kernel fraction separated from cold-pressed flaxseed cake was further used as feedstock for LO production. After ethanol extraction, partition, and precipitation, LOs were extracted from cold-pressed flaxseed cake with a purity of 91.4%. The proposed method could serve as feasible flaxseed cake valorization strategy and enable the preparation of other polar compounds such as flax lignan and mucilage. [Display omitted] •Linusorb is prepared from flaxseed cake via dry-screening and ethanol pre-extraction.•Ethanol is proved effective as better substitute for acetone in pre-extraction•Impurities introduced by ethanol could be removed via aqueous precipitation