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Su R, Liang Y, Chen H, Sheoran N, Ke W, Bai J, Jia M, Zhu J, Li Q, Liu Q, Chen X, Guo X. Investigating the efficacy of an exopolysaccharide (EPS)-producing strain Lactiplantibacillus plantarum L75 on oat silage fermentation at different temperatures. Microb Biotechnol 2024; 17:e14454. [PMID: 38568756 PMCID: PMC10990043 DOI: 10.1111/1751-7915.14454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 03/06/2024] [Accepted: 03/09/2024] [Indexed: 04/05/2024] Open
Abstract
This study investigates the effectiveness of an exopolysaccharide (EPS)-producing strain (Lactiplantibacillus plantarum L75) alone or in combination with Saccharomyces cerevisiae on the fermentation characteristics, antioxidant capacities and microbial community successions of oat silage stored at various temperatures. A rapid decrease in pH and lactic acid accumulation was observed in silages treated with L. plantarum and S. cerevisiae (LS) as early as 3 days of ensiling (p < 0.05). Over the ensiling period of 7-60 days, L. plantarum (L)-inoculated groups showed the lowest pH, lowest ammonia nitrogen and the highest amount of lactic acid regardless of the storage temperatures. When the oat silage was stored at 15°C, LS-inoculated group exhibited a higher superoxide dismutase (SOD) activity than control and L-inoculated group. Furthermore, the proportion of Lactiplantibacillus in the combined inoculation group increased by 65.42% compared to the L-inoculated group (33.26%). Fungal community data revealed abundant Penicillium carneum in the control and L-inoculated groups stored at 15°C. Conclusively, these results showed that combined inoculation of L. plantarum L75 and S. cerevisiae improved the fermentation quality of oat silage at 15°C, thus proposing a technique for enhancing the fermentation quality of silage in regions with low temperatures during harvest season.
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Affiliation(s)
- Rina Su
- School of Life Sciences, Probiotics and Life Health InstituteLanzhou UniversityLanzhouChina
| | - Ying Liang
- School of Life Sciences, Probiotics and Life Health InstituteLanzhou UniversityLanzhouChina
| | - Hu Chen
- School of Life Sciences, Probiotics and Life Health InstituteLanzhou UniversityLanzhouChina
| | - Neha Sheoran
- School of Life Sciences, Probiotics and Life Health InstituteLanzhou UniversityLanzhouChina
| | - Wencan Ke
- Department of Animal ScienceNingxia UniversityYinchuanChina
| | - Jie Bai
- College of Grassland ScienceGansu Agricultural UniversityLanzhouChina
| | - Mengya Jia
- School of Life Sciences, Probiotics and Life Health InstituteLanzhou UniversityLanzhouChina
| | - Jie Zhu
- School of Life Sciences, Probiotics and Life Health InstituteLanzhou UniversityLanzhouChina
| | - Qiang Li
- School of Life Sciences, Probiotics and Life Health InstituteLanzhou UniversityLanzhouChina
| | - Qi Liu
- School of Life Sciences, Probiotics and Life Health InstituteLanzhou UniversityLanzhouChina
| | - Xiaojun Chen
- Animal Husbandry and Veterinary Bureau of Anding DistrictDingxiChina
| | - Xusheng Guo
- School of Life Sciences, Probiotics and Life Health InstituteLanzhou UniversityLanzhouChina
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Li X, Chen F, Xiong Y, Guo L, Xu J, Lin Y, Ni K, Yang F. Perilla frutescens as potential antimicrobial modifier to against forage oat silage spoilage. Front Microbiol 2022; 13:1053933. [PMID: 36605512 PMCID: PMC9807611 DOI: 10.3389/fmicb.2022.1053933] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Accepted: 10/19/2022] [Indexed: 12/24/2022] Open
Abstract
The aim of this study was to investigate the influence of Perilla frutescens, alone or in combination with Lactobacillus plantarum a214 or citric acid, on forage oat silage quality, bacterial and fungal microbiological profile during ensiling and aerobic exposure. With the exception of Perilla frutescens, all additives could improve silage quality of forage oat based on lower ammonia-nitrogen content and higher residual of water soluble carbohydrates during anaerobic fermentation compared to control silage, especially in Perilla frutescens combined with citric acid (CAPF). Lactobacillus was the dominant bacteria in all silages, while CAPF group increased the relative abundance of Lactobacillus lindneri and Lactobacillus brevis compared to control silage. The application of Perilla frutescens suppressed the relative abundance of yeasts such as Pichia fermentans and Wickerhamomyces anomalus in response to aerobic exposure, especially in CAPF treatment, leading to high acetic acids and lower dry matter loss, as well as good aerobic stability. Therefore, Perilla frutescens, alone or in combination with citric acid, has potential to improve aerobic stability of forage oat silage by shifting bacterial and fungal community composition, and can be used as new additive to prepare high-quality silage for animal production.
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Affiliation(s)
- Xiaomei Li
- College of Grassland Science and Technology, China Agricultural University, Beijing, China
| | - Fei Chen
- College of Grassland Science and Technology, China Agricultural University, Beijing, China
| | - Yi Xiong
- College of Grassland Science and Technology, China Agricultural University, Beijing, China
| | - Linna Guo
- College of Biological Engineering, Henan University of Technology, Zhengzhou, China
| | - Jingjing Xu
- College of Grassland Science and Technology, China Agricultural University, Beijing, China
| | - Yanli Lin
- College of Grassland Science and Technology, China Agricultural University, Beijing, China,Beijing Sure Academy of Biosciences, Beijing, China
| | - Kuikui Ni
- College of Grassland Science and Technology, China Agricultural University, Beijing, China
| | - Fuyu Yang
- College of Grassland Science and Technology, China Agricultural University, Beijing, China,*Correspondence: Fuyu Yang,
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Niu D, Yu C, Zheng M, Ren J, Li C, Xu C. Effects of ensiling on Irpex lacteus fermentation in wheat straw: Chemical composition, in vitro rumen digestibility, and fungal community. Anim Feed Sci Technol 2022. [DOI: 10.1016/j.anifeedsci.2022.115433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
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Xu S, Xu S, Ge X, Tan L, Liu T. Low-cost and highly efficient production of bacterial cellulose from sweet potato residues: Optimization, characterization, and application. Int J Biol Macromol 2022; 196:172-179. [PMID: 34914912 DOI: 10.1016/j.ijbiomac.2021.12.021] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 11/27/2021] [Accepted: 12/04/2021] [Indexed: 11/30/2022]
Abstract
Bacterial cellulose (BC) is an emerging biological material with unique properties and structure, which has attracted more and more attention. In this study, Gluconacetobacter xylinus was used to convert sweet potato residues (SPR) hydrolysate to BC. SPR was directly used without pretreatment, and almost no inhibitors were generated, which was beneficial to subsequent glucan conversion and SPR-BC synthesis. SPR-BC production was 11.35 g/L under the optimized condition. The comprehensive structural characterization and mechanical analysis demonstrated that the crystallinity, maximum thermal degradation temperature, and tensile strength of SPR-BC were 87.39%, 263 °C, and 6.87 MPa, respectively, which were superior to those of BC produced with the synthetic medium. SPR-BC was added to rice straw pulp to enhance the bonding force between fibers and the indices of tensile, burst, and tear of rice straw paper. The indices were increased by 83.18%, 301.27%, and 169.58%, respectively. This research not only expanded the carbon source of BC synthesis, reduced BC production cost, but also improved the quality of rice straw paper.
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Affiliation(s)
- Shuai Xu
- Department of Bioengineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China
| | - Shujie Xu
- Department of Bioengineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China
| | - Xiaoli Ge
- Department of Bioengineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China
| | - Liping Tan
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China; Department of Bioengineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China
| | - Tongjun Liu
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China; Department of Bioengineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China.
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Zhu L, Gao M, Li H, Deng ZY, Zhang B, Fan Y. Effects of soluble dietary fiber from sweet potato dregs on the structures of intestinal flora in mice. FOOD BIOSCI 2021. [DOI: 10.1016/j.fbio.2021.100880] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Effects of the Application of Lactobacillus plantarum Inoculant and Potassium Sorbate on the Fermentation Quality, In Vitro Digestibility and Aerobic Stability of Total Mixed Ration Silage Based on Alfalfa Silage. Animals (Basel) 2020; 10:ani10122229. [PMID: 33261055 PMCID: PMC7760543 DOI: 10.3390/ani10122229] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Revised: 11/18/2020] [Accepted: 11/25/2020] [Indexed: 11/16/2022] Open
Abstract
Simple Summary Ensiling total mixed ration allows preservation and saves labor for small farms. This study evaluated the substitution relationship between lactic acid bacteria (Lactobacillus plantarum) and silage components, and verified the practicality of preservative (potassium sorbate) in total mixed ration silage. The results showed that potassium sorbate greatly improved the preservation efficiency of total mixed ration silages. The alfalfa silage could directly produce an acidic environment for fresh total mixed ration before ensiling and showed comparable function to inoculant in the improvement of fermentation quality. Therefore, the application of the inoculant is not necessary when the total mixed ration contains a certain percentage of silage. These findings could provide guidance for farmers to avoid the blind use of inoculants and the spoilage of total mixed ration silage, which could directly improve economic efficiency. Abstract This study aimed to evaluate the effect of the application of an inoculant and a preservative on the fermentation quality, in vitro digestibility, and aerobic stability of alfalfa silage-based fermented total mixed ration (TMR). The TMR was ensiled with (1) no additives (control), (2) Lactobacillus plantarum (LP), or (3) potassium sorbate (PS). The V-scores of all silages were higher than 80 points during the 30 days of ensiling. The addition of LP and PS had no effects on the in vitro parameters, such as in vitro digestibility and in vitro gas production (p > 0.05). LP-treated silage showed similar fermentation quality and comparable aerobic stability to the control (110 h). The LP only decreased the ammonia nitrogen (NH3-N) content (p < 0.05) during ensiling. The PS significantly increased the pH of TMR silages (p < 0.05). Meanwhile, the addition of PS improved the aerobic stability (>162 h) of TMR silage, indicated by the higher water-soluble carbohydrate content and lower NH3-N content in comparison with those in the control after aerobic exposure (p < 0.05). The improvement in fermentation quality is extremely small in terms of applying LP in TMR silage based on a large percentage of other silage ingredients. The PS is effective in conserving unpacked TMR silage and showed the potential to reduce the risk of ruminal acidosis in livestock.
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da Silva ÉB, Savage RM, Biddle AS, Polukis SA, Smith ML, Kung L. Effects of a chemical additive on the fermentation, microbial communities, and aerobic stability of corn silage with or without air stress during storage. J Anim Sci 2020; 98:5881359. [PMID: 32756961 DOI: 10.1093/jas/skaa246] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Accepted: 07/30/2020] [Indexed: 02/01/2023] Open
Abstract
We evaluated the effects of a chemical additive on the microbial communities, fermentation profile, and aerobic stability of whole-plant corn silage with or without air stress during storage. Whole-plant corn was either untreated or treated with a chemical additive containing sodium benzoate, potassium sorbate, and sodium nitrite at 2 or 3 liters/t of fresh forage weight. Ten individually treated and replicated silos (7.5 liters) were made for each treatment. Half of the silos remained sealed throughout a 63-d storage period, and the other half was subjected to air stress for 2 h/wk. The composition of the bacterial and fungal communities of fresh forage and silages untreated or treated with 2 liters/t of fresh forage weight was analyzed by Illumina Miseq sequencing. Treated silage had greater (P < 0.05) aerobic stability than untreated, even when subjected to air stress during storage, but the numbers of yeasts culturable on selective agar were not affected. However, the additive reduced the relative abundance (RA) of the lactating-assimilating yeast Candida tropicalis (P < 0.01). In air-stressed silages, untreated silage had a greater (P < 0.05) RA of Pichia kudriavzevii (also a lactate assimilator) than treated silage, whereas treated silage was dominated by Candida humilis, which is usually unable to assimilate lactate or assimilates it slowly. The additive improved the aerobic stability by specifically preventing the dominance of yeast species that can consume lactate and initiate aerobic spoilage. To the best of our knowledge, this is the first work that identifies the specific action of this additive on shifting the microbial communities in corn silage.
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Affiliation(s)
- Érica B da Silva
- Department of Animal and Food Sciences, University of Delaware, Newark, DE
| | - Rebecca M Savage
- Department of Animal and Food Sciences, University of Delaware, Newark, DE
| | - Amy S Biddle
- Department of Animal and Food Sciences, University of Delaware, Newark, DE
| | | | - Megan L Smith
- Department of Animal and Food Sciences, University of Delaware, Newark, DE
| | - Limin Kung
- Department of Animal and Food Sciences, University of Delaware, Newark, DE
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