ArticleMolecules (Basel, Switzerland)2022
Process Optimization, Amino Acid Composition, and Antioxidant Activities of Protein and Polypeptide Extracted from Waste Beer Yeast.
Article in Molecules (Basel, Switzerland), 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed, 26 citations in OpenAlex.
- Combined Supplementation of Live Yeast and Yeast Postbiotics Enhances Antioxidant Capacity and Intestinal Health in Weaned Piglets.Antioxidants (Basel, Switzerland) · 2026Article
- Uncovering Novel DPP-IV Inhibitory Peptides from Amphibian (Foods (Basel, Switzerland) · 2025Article
- The Biological Functions of Yeast and Yeast Derivatives and Their Application in Swine Production: A Review.Microorganisms · 2025Review
- Peptide-Rich Yeast Fractions from Brewer's Spent Yeast: A Scalable Fractionation Approach and Their Functional Application in Bakery Products.Foods (Basel, Switzerland) · 2025Article
- Article
- Optimization Co-Culture ofJournal of fungi (Basel, Switzerland) · 2024Article
- Preparation Process Optimization of Peptides fromFoods (Basel, Switzerland) · 2023Article
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Authors and funding
9 authors at 1 institution in 1 country.
Funding
Abstract
Repurposing of waste beer yeast (WBY) that a main by-product of brewing industry has attracted considerable attention in recent years. In this study, the protein and polypeptide were extracted by ultrasonic-assisted extraction and enzymatic hydrolysis with process optimization, which resulted in a maximum yield of 73.94% and 61.24%, respectively. Both protein and polypeptide of WBY were composed of 17 Amino acids (AA) that included seven essential amino acids (EAA), and typically rich in glutamic acid (Glu) (6.46% and 6.13%) and glycine (Gly) (5.26% and 6.02%). AA score (AAS) revealed that the threonine (Thr) and SAA (methionine + cysteine) were the limiting AA of WBY protein and polypeptide. Furthermore, the antioxidant activities of WBY polypeptide that lower than 10 kDa against hydroxyl radical, DPPH radical, and ABTS radical were 95.10%, 98.37%, and 69.41%, respectively, which was significantly higher than that of WBY protein (25-50 kDa). Therefore, the protein and polypeptide extracted from WBY can be a source of high-quality AA applying in food and feed industry. Due to small molecular weight, abundant AA, and great antioxidant activity, WBY polypeptide can be promisingly used as functional additives in the pharmaceutical and healthcare industry.
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