Chenjie Wang , Yao Liu , Ruoyun Yuan , Ling Xu , Chunhui Xin , Yang Tang , Chengye Ma , Shanfeng Chen , Hongjun Li
{"title":"Enhancing mechanism of extrusion pretreatment on bioconversion of distiller’s grains into microbial protein feed","authors":"Chenjie Wang , Yao Liu , Ruoyun Yuan , Ling Xu , Chunhui Xin , Yang Tang , Chengye Ma , Shanfeng Chen , Hongjun Li","doi":"10.1016/j.anifeedsci.2024.115950","DOIUrl":null,"url":null,"abstract":"<div><p>The production of microbial protein feed has emerged as a promising way to convert distiller’s grains (DGs) into high-value utilization products, while the fermentation efficiency is limited by their large amount of difficultly degraded lignocelluloses. In this work, extrusion pretreatment was employed for DGs to facilitate the bioconversion into microbial protein feed. Results indicated that extrusion pretreatment led to the significantly increased crude protein and true protein of fermentation products (EDGF), which were 34.4 % and 34.2 % higher than those before fermentation. Glucose production during fermentation showed a good correlation with the change trend of cellulase activity, exhibiting a great potential for degradation. It could be also found sufficient evidences from the highly distinct morphological, thermogravimetric and chemical group characteristics. Eventually, amino acids in proteins of EDGF were generally higher than those of Control, especially for most essential amino acids. The application of extrusion pretreatment provided a potential solution for efficient bioconversion of DGs into microbial protein feed.</p></div>","PeriodicalId":7861,"journal":{"name":"Animal Feed Science and Technology","volume":null,"pages":null},"PeriodicalIF":2.5000,"publicationDate":"2024-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Animal Feed Science and Technology","FirstCategoryId":"97","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0377840124000786","RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"AGRICULTURE, DAIRY & ANIMAL SCIENCE","Score":null,"Total":0}
引用次数: 0
Abstract
The production of microbial protein feed has emerged as a promising way to convert distiller’s grains (DGs) into high-value utilization products, while the fermentation efficiency is limited by their large amount of difficultly degraded lignocelluloses. In this work, extrusion pretreatment was employed for DGs to facilitate the bioconversion into microbial protein feed. Results indicated that extrusion pretreatment led to the significantly increased crude protein and true protein of fermentation products (EDGF), which were 34.4 % and 34.2 % higher than those before fermentation. Glucose production during fermentation showed a good correlation with the change trend of cellulase activity, exhibiting a great potential for degradation. It could be also found sufficient evidences from the highly distinct morphological, thermogravimetric and chemical group characteristics. Eventually, amino acids in proteins of EDGF were generally higher than those of Control, especially for most essential amino acids. The application of extrusion pretreatment provided a potential solution for efficient bioconversion of DGs into microbial protein feed.
期刊介绍:
Animal Feed Science and Technology is a unique journal publishing scientific papers of international interest focusing on animal feeds and their feeding.
Papers describing research on feed for ruminants and non-ruminants, including poultry, horses, companion animals and aquatic animals, are welcome.
The journal covers the following areas:
Nutritive value of feeds (e.g., assessment, improvement)
Methods of conserving and processing feeds that affect their nutritional value
Agronomic and climatic factors influencing the nutritive value of feeds
Utilization of feeds and the improvement of such
Metabolic, production, reproduction and health responses, as well as potential environmental impacts, of diet inputs and feed technologies (e.g., feeds, feed additives, feed components, mycotoxins)
Mathematical models relating directly to animal-feed interactions
Analytical and experimental methods for feed evaluation
Environmental impacts of feed technologies in animal production.