Nutritional value improvement of soybean meal through solid-state fermentation by proteases-enhanced Streptomyces sp. SCUT-3.

IF 7.7 1区化学 Q1 BIOCHEMISTRY & MOLECULAR BIOLOGY International Journal of Biological Macromolecules Pub Date : 2025-04-01 Epub Date: 2025-01-17 DOI:10.1016/j.ijbiomac.2025.140035

De-Lin Lu, Ming-Shu Zhang, Fu-Bao Wang, Zhen-Jie Dai, Zhi-Wei Li, Jing-Tao Ni, Wen-Jing Feng, Fu-Gen Zhang, Jun Dai, Hai-Ning Wang, Jun-Jin Deng, Xiao-Chun Luo

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Abstract

With the global population expected to reach 10 billion by the 2050s, the demand for protein will surge, intensifying the need for high protein utilization efficiency. This study investigates the use of protease-enhanced Streptomyces sp. SCUT-3-3940 to degrade soybean meal (SBM) via solid-state fermentation (SSF). Optimized conditions resulted in anti-nutritional factors elimination and high soluble protein recovery (41.1 g/100 g), including bioactive oligopeptides (17.3 g/100 g) with antihypertensive and antioxidant properties. The degradation also produced free amino acids rich in essential amino acids, and other nutrient enhancing compounds. The fermented SBM (FSBM) exhibited superior digestibility, making it a valuable protein source. In a 60-day largemouth bass trial, replacing 10 % SBM with FSBM in feed significantly improved feed intake and weight gain. This method offers an efficient, eco-friendly, and cost-effective solution to address global protein shortages.

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蛋白酶增强链霉菌SCUT-3固态发酵提高豆粕营养价值

到2050年代，全球人口预计将达到100亿，对蛋白质的需求将激增，对蛋白质高利用效率的需求也将加剧。本研究研究了利用蛋白酶增强链霉菌sp. SCUT-3-3940进行固态发酵降解豆粕（SBM）。优化后的条件消除了抗营养因子和高可溶性蛋白回收率（41.1 g/100 g），包括具有抗高血压和抗氧化特性的生物活性寡肽（17.3 g/100 g）。降解还产生了富含必需氨基酸的游离氨基酸和其他增强营养的化合物。发酵后的SBM具有良好的消化率，是一种有价值的蛋白质来源。在60天的大口黑鲈试验中，饲料中以FSBM代替10 %的SBM，显著提高了大口黑鲈的采食量和增重。这种方法为解决全球蛋白质短缺问题提供了一种高效、环保、经济的解决方案。

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来源期刊

International Journal of Biological Macromolecules 生物-生化与分子生物学

CiteScore

13.70

自引率

9.80%

发文量

2728

审稿时长

64 days

期刊介绍： The International Journal of Biological Macromolecules is a well-established international journal dedicated to research on the chemical and biological aspects of natural macromolecules. Focusing on proteins, macromolecular carbohydrates, glycoproteins, proteoglycans, lignins, biological poly-acids, and nucleic acids, the journal presents the latest findings in molecular structure, properties, biological activities, interactions, modifications, and functional properties. Papers must offer new and novel insights, encompassing related model systems, structural conformational studies, theoretical developments, and analytical techniques. Each paper is required to primarily focus on at least one named biological macromolecule, reflected in the title, abstract, and text.