Application of Protein Hydrolysates from Defatted Walnut Meal in High-Gravity Brewing to Improve Fermentation Performance of Lager Yeast

Li, Tianlin; Wu, Caiyun; Liao, Jianqiao; Tian, Jun; Xu, Huaide; Lei, Hongjie

doi:10.1007/s12010-019-03109-8

Cited by 14 publications

(10 citation statements)

References 30 publications

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“…Easy to operate and inexpensive. (37,38) Disadvantages However, there are ionic introductions in the preparation process and the peptides are inevitably colored by the Merad reaction during fermentation, and the hydrophobic peptides produced during hydrolysis can also give the peptides an undesirable flavor (bitterness, and odor), limiting their practical application.…”

Section: Advantagesmentioning

confidence: 99%

An overview of walnuts application as a plant-based

Zhou

Pei

et al. 2022

Front. Endocrinol.

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The plant-based refers to plant-based raw materials or products that are available as the source of protein and fat. Utilization and development of walnuts as a plant-based, resulting in a high-quality protein-rich walnut plant-based product: walnut protein powder and walnut peptides. Progress in research on the application of walnuts as a plant-based has been advanced, solving the problem of wasted resources and environmental pollution caused by the fact that walnut residue, a product of walnuts after oil extraction, is often thrown away as waste, or becomes animal feed or compost. This paper reviews and summarizes the research and reports on walnut plant-based at home and abroad, focusing on the application of walnut plant-based in the preparation process (enzymatic and fermentation methods) and the biological activity of the walnut protein and walnut peptide, to provide a theoretical basis for the further processing of walnuts as a walnut plant-based. It can make full use of walnut resources and play its nutritional and health care value, develop and build a series of walnut plant-based products, improve the competitiveness of walnut peptide products, turn them into treasure, and provide more powerful guidance for the development of food and medicine health industry in Yunnan.

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Section: Advantagesmentioning

confidence: 99%

An overview of walnuts application as a plant-based

Zhou

Pei

et al. 2022

Front. Endocrinol.

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“…The natural walnut protein has a compact stereostructure, and most of its cleavage sites are contained in the protein, which makes it difficult to be hydrolyzed by protease. In order to solve this problem, Lv et al [27] and Li et al [28] studied the effect of ultrasonic assistance on the enzymatic hydrolysis of walnut residue. The results showed that ultrasonic-assisted hydrolysis of walnut protein had a positive effect on the reaction characteristics and energy efficiency.…”

Section: Enzymatic Preparationmentioning

confidence: 99%

“…compared with conventional enzymatic hydrolysis, the DH of WBP by ultrasonic-assisted enzymatic hydrolysis and ultrasonic pretreatment followed by enzymatic hydrolysis increased by 1.43 and 0.71 times, respectively. Not only that, but also the biological activity of the hydrolysate was improved, which can significantly improve the growth and cell activity of yeast, promote the accumulation of glycogen and trehalose, and improve the taste of beer [28]. As far as we know, high-pressure homogenization, microwave and other pretreatment assisted enzymatic hydrolysis technologies have been successfully applied to the preparation of plant-derived active peptides such as soybean [29], peanut [30], but rarely used in the preparation of active peptides from walnut meal protein pretreatment.…”

Section: Enzymatic Preparationmentioning

confidence: 99%

Bioactive Peptides from Walnut Residue Protein

Guo

Chi

et al. 2020

Molecules

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Walnut residue is a kind of high-quality plant protein resource. The bioactive peptide prepared from walnut residue has excellent health care functions such as antioxidation and antihypertensive activity, but at present, walnut residue is often regarded as waste or low value feed, fertilizer and other materials. The uneconomical use of walnut residue has hindered the development of the walnut industry to some extent. Effective utilization of walnut residue protein to develop bioactive peptides and other products is of great significance to realize the comprehensive utilization of walnut residue, improve the added value of by-products, and change the current low utilization rate of walnut residue. In this paper, the preparation, purification and structure identification of walnut protein bioactive peptides are reviewed, and different functional walnut active peptides (WBPs) are introduced. The potential effects of these bioactivities on human health and their different uses in food, medicine and other industries are discussed. The purpose is to provide reference information for the effective utilization of walnut residue resources and the development of walnut industry.

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“…Craft breweries typically have a small capacity but can brew different varieties of beer depending on the malt, hops, and Saccharomyces cerevisiae , making them more enticing to the average taste-and-aroma-conscious consumer. In recent decades, there has been a notable change in the behavior of a portion of beer consumers, who pay more attention to craft beer ( Aquilani et al, 2015 ; Li T. et al, 2020 ). And, unlike large-scale industrial beer, craft beer, is produced with more concern for quality and diversity based on preserving original sensory characteristics ( Hayward et al, 2019 ).…”

Section: Introductionmentioning

confidence: 99%

Screening and transcriptomic analysis of the ethanol-tolerant mutant Saccharomyces cerevisiae YN81 for high-gravity brewing

Yang

Zhang

et al. 2022

Front. Microbiol.

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Ethanol stress is one of the major limiting factors for high-gravity brewing. Breeding of yeast strain with high ethanol tolerance, and revealing the ethanol tolerance mechanism of Saccharomyces cerevisiae is of great significance to the production of high-gravity beer. In this study, the mutant YN81 was obtained by ultraviolet-diethyl sulfate (UV-DES) cooperative mutagenesis from parental strain CS31 used in high-gravity craft beer brewing. The ethanol tolerance experiment results showed that cell growth and viability of YN81 were significantly greater than that of CS31 under ethanol stress. The ethanol tolerance mechanisms of YN81 were studied through observation of cell morphology, intracellular trehalose content, and transcriptomic analysis. Results from scanning electron microscope (SEM) showed alcohol toxicity caused significant changes in the cell morphology of CS31, while the cell morphology of YN81 changed slightly, indicating the cell morphology of CS31 got worse (the formation of hole and cell wrinkle). In addition, compared with ethanol-free stress, the trehalose content of YN81 and CS31 increased dramatically under ethanol stress, but there was no significant difference between YN81 and CS31, whether with or without ethanol stress. GO functional annotation analysis showed that under alcohol stress, the number of membrane-associated genes in YN81 was higher than that without alcohol stress, as well as CS31, while membrane-associated genes in YN81 were expressed more than CS31 under alcohol stress. KEGG functional enrichment analysis showed unsaturated fatty acid synthesis pathways and amino acid metabolic pathways were involved in ethanol tolerance of YN81. The mutant YN81 and its ethanol tolerance mechanism provide an optimal strain and theoretical basis for high-gravity craft beer brewing.

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Application of Protein Hydrolysates from Defatted Walnut Meal in High-Gravity Brewing to Improve Fermentation Performance of Lager Yeast

Cited by 14 publications

References 30 publications

An overview of walnuts application as a plant-based

An overview of walnuts application as a plant-based

Bioactive Peptides from Walnut Residue Protein

Screening and transcriptomic analysis of the ethanol-tolerant mutant Saccharomyces cerevisiae YN81 for high-gravity brewing

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