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Yu T, Wu X, Song Y, Lv H, Zhang G, Tang W, Zheng Z, Wang X, Gu Y, Zhou X, Li J, Tian S, Hou X, Chen Q, Xin D, Ni H. Isolation and Identification of Salinity-Tolerant Rhizobia and Nodulation Phenotype Analysis in Different Soybean Germplasms. Curr Issues Mol Biol 2024; 46:3342-3352. [PMID: 38666939 PMCID: PMC11049135 DOI: 10.3390/cimb46040209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2024] [Revised: 04/01/2024] [Accepted: 04/10/2024] [Indexed: 04/28/2024] Open
Abstract
Increasing the soybean-planting area and increasing the soybean yield per unit area are two effective solutions to improve the overall soybean yield. Northeast China has a large saline soil area, and if soybeans could be grown there with the help of isolated saline-tolerant rhizobia, the soybean cultivation area in China could be effectively expanded. In this study, soybeans were planted in soils at different latitudes in China, and four strains of rhizobia were isolated and identified from the soybean nodules. According to the latitudes of the soil-sampling sites from high to low, the four isolated strains were identified as HLNEAU1, HLNEAU2, HLNEAU3, and HLNEAU4. In this study, the isolated strains were identified for their resistances, and their acid and saline tolerances and nitrogen fixation capacities were preliminarily identified. Ten representative soybean germplasm resources in Northeast China were inoculated with these four strains, and the compatibilities of these four rhizobium strains with the soybean germplasm resources were analyzed. All four isolates were able to establish different extents of compatibility with 10 soybean resources. Hefeng 50 had good compatibility with the four isolated strains, while Suinong 14 showed the best compatibility with HLNEAU2. The isolated rhizobacteria could successfully establish symbiosis with the soybeans, but host specificity was also present. This study was a preliminary exploration of the use of salinity-tolerant rhizobacteria to help the soybean nitrogen fixation in saline soils in order to increase the soybean acreage, and it provides a valuable theoretical basis for the application of saline-tolerant rhizobia.
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Affiliation(s)
- Tong Yu
- Key Laboratory of Soybean Biology of the Chinese Ministry of Education, Key Laboratory of Soybean Biology and Breeding, Genetics of Chinese Agriculture Ministry, College of Agriculture, Northeast Agricultural University, Harbin 150036, China; (T.Y.); (Y.S.); (H.L.); (G.Z.); (W.T.); (Z.Z.); (X.W.); (Y.G.); (X.Z.); (J.L.); (S.T.); (X.H.); (Q.C.)
| | - Xiaodong Wu
- Heilongjiang Green Food Science Research Institute, Harbin 150000, China;
| | - Yunshan Song
- Key Laboratory of Soybean Biology of the Chinese Ministry of Education, Key Laboratory of Soybean Biology and Breeding, Genetics of Chinese Agriculture Ministry, College of Agriculture, Northeast Agricultural University, Harbin 150036, China; (T.Y.); (Y.S.); (H.L.); (G.Z.); (W.T.); (Z.Z.); (X.W.); (Y.G.); (X.Z.); (J.L.); (S.T.); (X.H.); (Q.C.)
| | - Hao Lv
- Key Laboratory of Soybean Biology of the Chinese Ministry of Education, Key Laboratory of Soybean Biology and Breeding, Genetics of Chinese Agriculture Ministry, College of Agriculture, Northeast Agricultural University, Harbin 150036, China; (T.Y.); (Y.S.); (H.L.); (G.Z.); (W.T.); (Z.Z.); (X.W.); (Y.G.); (X.Z.); (J.L.); (S.T.); (X.H.); (Q.C.)
| | - Guoqing Zhang
- Key Laboratory of Soybean Biology of the Chinese Ministry of Education, Key Laboratory of Soybean Biology and Breeding, Genetics of Chinese Agriculture Ministry, College of Agriculture, Northeast Agricultural University, Harbin 150036, China; (T.Y.); (Y.S.); (H.L.); (G.Z.); (W.T.); (Z.Z.); (X.W.); (Y.G.); (X.Z.); (J.L.); (S.T.); (X.H.); (Q.C.)
| | - Weinan Tang
- Key Laboratory of Soybean Biology of the Chinese Ministry of Education, Key Laboratory of Soybean Biology and Breeding, Genetics of Chinese Agriculture Ministry, College of Agriculture, Northeast Agricultural University, Harbin 150036, China; (T.Y.); (Y.S.); (H.L.); (G.Z.); (W.T.); (Z.Z.); (X.W.); (Y.G.); (X.Z.); (J.L.); (S.T.); (X.H.); (Q.C.)
| | - Zefeng Zheng
- Key Laboratory of Soybean Biology of the Chinese Ministry of Education, Key Laboratory of Soybean Biology and Breeding, Genetics of Chinese Agriculture Ministry, College of Agriculture, Northeast Agricultural University, Harbin 150036, China; (T.Y.); (Y.S.); (H.L.); (G.Z.); (W.T.); (Z.Z.); (X.W.); (Y.G.); (X.Z.); (J.L.); (S.T.); (X.H.); (Q.C.)
| | - Xiaohan Wang
- Key Laboratory of Soybean Biology of the Chinese Ministry of Education, Key Laboratory of Soybean Biology and Breeding, Genetics of Chinese Agriculture Ministry, College of Agriculture, Northeast Agricultural University, Harbin 150036, China; (T.Y.); (Y.S.); (H.L.); (G.Z.); (W.T.); (Z.Z.); (X.W.); (Y.G.); (X.Z.); (J.L.); (S.T.); (X.H.); (Q.C.)
| | - Yumeng Gu
- Key Laboratory of Soybean Biology of the Chinese Ministry of Education, Key Laboratory of Soybean Biology and Breeding, Genetics of Chinese Agriculture Ministry, College of Agriculture, Northeast Agricultural University, Harbin 150036, China; (T.Y.); (Y.S.); (H.L.); (G.Z.); (W.T.); (Z.Z.); (X.W.); (Y.G.); (X.Z.); (J.L.); (S.T.); (X.H.); (Q.C.)
| | - Xin Zhou
- Key Laboratory of Soybean Biology of the Chinese Ministry of Education, Key Laboratory of Soybean Biology and Breeding, Genetics of Chinese Agriculture Ministry, College of Agriculture, Northeast Agricultural University, Harbin 150036, China; (T.Y.); (Y.S.); (H.L.); (G.Z.); (W.T.); (Z.Z.); (X.W.); (Y.G.); (X.Z.); (J.L.); (S.T.); (X.H.); (Q.C.)
| | - Jianlin Li
- Key Laboratory of Soybean Biology of the Chinese Ministry of Education, Key Laboratory of Soybean Biology and Breeding, Genetics of Chinese Agriculture Ministry, College of Agriculture, Northeast Agricultural University, Harbin 150036, China; (T.Y.); (Y.S.); (H.L.); (G.Z.); (W.T.); (Z.Z.); (X.W.); (Y.G.); (X.Z.); (J.L.); (S.T.); (X.H.); (Q.C.)
| | - Siyi Tian
- Key Laboratory of Soybean Biology of the Chinese Ministry of Education, Key Laboratory of Soybean Biology and Breeding, Genetics of Chinese Agriculture Ministry, College of Agriculture, Northeast Agricultural University, Harbin 150036, China; (T.Y.); (Y.S.); (H.L.); (G.Z.); (W.T.); (Z.Z.); (X.W.); (Y.G.); (X.Z.); (J.L.); (S.T.); (X.H.); (Q.C.)
| | - Xiuming Hou
- Key Laboratory of Soybean Biology of the Chinese Ministry of Education, Key Laboratory of Soybean Biology and Breeding, Genetics of Chinese Agriculture Ministry, College of Agriculture, Northeast Agricultural University, Harbin 150036, China; (T.Y.); (Y.S.); (H.L.); (G.Z.); (W.T.); (Z.Z.); (X.W.); (Y.G.); (X.Z.); (J.L.); (S.T.); (X.H.); (Q.C.)
| | - Qingshan Chen
- Key Laboratory of Soybean Biology of the Chinese Ministry of Education, Key Laboratory of Soybean Biology and Breeding, Genetics of Chinese Agriculture Ministry, College of Agriculture, Northeast Agricultural University, Harbin 150036, China; (T.Y.); (Y.S.); (H.L.); (G.Z.); (W.T.); (Z.Z.); (X.W.); (Y.G.); (X.Z.); (J.L.); (S.T.); (X.H.); (Q.C.)
| | - Dawei Xin
- Key Laboratory of Soybean Biology of the Chinese Ministry of Education, Key Laboratory of Soybean Biology and Breeding, Genetics of Chinese Agriculture Ministry, College of Agriculture, Northeast Agricultural University, Harbin 150036, China; (T.Y.); (Y.S.); (H.L.); (G.Z.); (W.T.); (Z.Z.); (X.W.); (Y.G.); (X.Z.); (J.L.); (S.T.); (X.H.); (Q.C.)
| | - Hejia Ni
- Key Laboratory of Soybean Biology of the Chinese Ministry of Education, Key Laboratory of Soybean Biology and Breeding, Genetics of Chinese Agriculture Ministry, College of Agriculture, Northeast Agricultural University, Harbin 150036, China; (T.Y.); (Y.S.); (H.L.); (G.Z.); (W.T.); (Z.Z.); (X.W.); (Y.G.); (X.Z.); (J.L.); (S.T.); (X.H.); (Q.C.)
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Guo Y, Huang R, Niu Y, Zhang P, Li Y, Zhang W. Chemical characteristics, antioxidant capacity, bacterial community, and metabolite composition of mulberry silage ensiling with lactic acid bacteria. Front Microbiol 2024; 15:1363256. [PMID: 38650879 PMCID: PMC11033325 DOI: 10.3389/fmicb.2024.1363256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2023] [Accepted: 03/18/2024] [Indexed: 04/25/2024] Open
Abstract
Mulberry has high crude protein and biologically active compounds but is difficult to be ensiled due to the lack of adequate epiphytic LAB. This study aimed to investigate the effects of inoculation with Lactiplantibacillus plantarum and Pediococcus pentosaceus isolated from mulberry with higher antioxidant capacity alone or in combination with Streptococcus bovis on chemical characteristics, antioxidant capacity, bacterial community, and metabolite composition of mulberry silage. The results showed that all inoculation groups had higher dry matter and lower pH than the control group, particularly in LP (dry matter, DM, 32.03% and pH = 4.44) and LP_PP_SB (DM, 31.68% and pH = 4.26) after 60 days of ensiling. Ammonia nitrogen (AN) content was the lowest in both LP_SB and LP_PP_SB groups, which were 1.86 g/kg FM and 1.05 g/kg FM, respectively, (P < 0.05). Only the LP_PP_SB group showed increased polyunsaturated fatty acids (PUFA, 1.2851 g/kg DM, P < 0.05) than the control group. Ferric-reducing antioxidant power (FRAP) values were increased in all inoculation-treated groups compared with the control group (P < 0.05). 2,2-Diphenyl-1-picrylhydrazyl (DDPH), 3-ethylbenzothiazoline-6-sulfonic acid (ABTS), and FRAP exhibited the highest levels in the LP_PP- and LP_PP_SB-treated groups. Enterobacter was dominant in both the control and SB-treated groups, and the relative abundance was 41.18% and 32.35%, respectively (P < 0.05). The relative abundance of Lactiplantibacillus was higher in the LP-, LP_PP-, and LP_SB-treated groups (81.84%-82.69%). Relative abundance of Pediococcus was higher in the PP-, PP_SB-, and LP_PP_SB-treated groups (74.27%-85.27%). Untargeted metabolomics analysis results showed that five flavonoids (apigenin, eriodictyol, quercetin-3-glucoside, rutin, and kaempferol-3-O-rutinoside)were upregulated in all inoculation groups (except for the SB-treated groups). Among them, eriodictyol was both positively correlated with ABTS and FRAP and also showed the highest relative abundance in the LP_PP- and LP_PP_SB-treated groups. To the best of our knowledge, this study was the first to investigate the relationship between inoculants of epiphytic lactic acid bacteria and antioxidant capacity by 16s rRNA Illumina sequencing technology and untargeted metabolomics analysis, respectively. Consequently, inoculated L. plantarum, P. pentosaceus alone, respectively, or in combination with S. bovis increased the relative abundance of Lactiplantibacillus and Pediococcus and decreased the relative abundance of Enterobacter, particularly in the LP_PP_SB-treated group. In addition, inoculants could increase the relative abundance of five flavonoids (apigenin, eriodictyol, quercetin-3-glucoside, rutin, and kaempferol-3-O-rutinoside), especially eriodictyol to improve the antioxidant capacity of mulberry silage.
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Affiliation(s)
| | | | | | | | | | - Wenju Zhang
- College of Animal Science and Technology, Shihezi University, Shihezi, China
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Pandey RP, Gunjan, Himanshu, Mukherjee R, Chang CM. Nanocarrier-mediated probiotic delivery: a systematic meta-analysis assessing the biological effects. Sci Rep 2024; 14:631. [PMID: 38182678 PMCID: PMC10770044 DOI: 10.1038/s41598-023-50972-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Accepted: 12/28/2023] [Indexed: 01/07/2024] Open
Abstract
Probiotics have gained a significant attention as a promising way to improve gut health and overall well-being. The increasing recognition of the potential health advantages associated with functional food products, leading to a specific emphasis on co-encapsulating probiotic bacteria and bioactive compounds within a unified matrix. To further explore this concept, a meta-analysis was performed to assess the effects of probiotics encapsulated in nanoparticles. A comprehensive meta-analysis was conducted, encompassing 10 papers published from 2017 to 2022, focusing on the encapsulation of probiotics within nanoparticles and their viability in various gastrointestinal conditions. The selection of these papers was based on their direct relevance to the research topic. Random-effect models were used to aggregate study-specific risk estimates. In the majority of studies, it was observed that nano-encapsulated nanoparticles showed improved viability over time compared to their free state counterparts. At various time intervals, the odds ratios (OR) with 95% confidence intervals (CI) were estimated using fixed and random effect models. At 0 min, the OR (95%CI) was 2.79 (2.79; 2.80) and 2.38 (2.14; 2.64) for. At 30 and 60 min observation was at similar rate of 2.23 (2.23; 2.24) and 2.05 (1.73; 2.43). However, at 90 min it was 1.39 (1.39; 1.39) and 1.66 (1.29; 2.14) and at 120 min 2.41 (2.41; 2.42) and 2.03 (1.63; 2.52). Overall evaluation of encapsulation revealed an improvement in probiotic bacterial viability in simulated the gastrointestinal environments.
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Affiliation(s)
- Ramendra Pati Pandey
- School of Health Sciences and Technology (SOHST), UPES, Dehradun, Uttarakhand, 248007, India
| | - Gunjan
- Graduate Institute of Biomedical Sciences, Chang Gung University, No. 259, Wenhua 1st Road, Guishan District, Taoyuan City, 33302, Taiwan (R.O.C.)
- Master & Ph.D Program in Biotechnology Industry, Chang Gung University, No. 259, Wenhua 1st Road, Guishan District, Taoyuan City, 33302, Taiwan (R.O.C.)
| | - Himanshu
- Graduate Institute of Biomedical Sciences, Chang Gung University, No. 259, Wenhua 1st Road, Guishan District, Taoyuan City, 33302, Taiwan (R.O.C.)
- Master & Ph.D Program in Biotechnology Industry, Chang Gung University, No. 259, Wenhua 1st Road, Guishan District, Taoyuan City, 33302, Taiwan (R.O.C.)
| | - Riya Mukherjee
- Graduate Institute of Biomedical Sciences, Chang Gung University, No. 259, Wenhua 1st Road, Guishan District, Taoyuan City, 33302, Taiwan (R.O.C.)
- Master & Ph.D Program in Biotechnology Industry, Chang Gung University, No. 259, Wenhua 1st Road, Guishan District, Taoyuan City, 33302, Taiwan (R.O.C.)
| | - Chung-Ming Chang
- Master & Ph.D Program in Biotechnology Industry, Chang Gung University, No. 259, Wenhua 1st Road, Guishan District, Taoyuan City, 33302, Taiwan (R.O.C.).
- Department of Medical Biotechnology and Laboratory Science, Chang Gung University, No. 259, Wenhua 1st Road, Guishan District, Taoyuan city 33302, Taiwan (R.O.C.).
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Stephen JM, Saleh AM. Homofermentative Lactobacilli isolated from organic sources exhibit potential ability of lactic acid production. Front Microbiol 2023; 14:1297036. [PMID: 38179457 PMCID: PMC10764624 DOI: 10.3389/fmicb.2023.1297036] [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: 09/19/2023] [Accepted: 12/01/2023] [Indexed: 01/06/2024] Open
Abstract
There has been an increasing interest in recent years in lactic acid bacteria that are derived from organic sources for lactic acid production. This research article presents the isolation and identification of homofermentative lactic acid bacteria from various novel organic sources, followed by qualitative and quantitative analyses of lactic acid produced. A total of 32 isolates were identified initially from various sources, such as curd (C1, C2), probiotics (P1, P2, and P3), silage (Si1 and Si2), soil samples (S1, S2, and S3), vermicompost (V1 and V2), and Farmyard manure. Biochemical tests such as Gram's staining, catalase test, and oxidase test were conducted for preliminary identification of lactic acid bacteria using De Man, Rogosa, and Sharpe agar (MRS) media. Through selection and identification, based on colony morphology and biochemical characteristics, 18 isolates were identified as lactic acid bacteria. The subsequent analysis included a tube test, screening for organic acid production, and homofermentative screening using homofermentative-heterofermentative differential (HHD) medium for qualitative analysis of lactic acid. The results revealed that 9 out of 18 selected strains were homofermentative and had promising potential for the production of lactic acid. Furthermore, six isolates (P1-1, S1-3, C2-1, V2-3, P2-1, and C1-1) from all of the nine positive strains were subjected to pH testing (0, 24, 48, and 72 h) and titrimetric assay for estimation of % crude lactic acid present. The presence of lactic acid was confirmed using thin-layer chromatography (TLC). L (+)-Lactic acid was quantified using a K-LATE enzymatic assay kit, for the best three isolates (P1-1, S1-3, C2-1). Finally, the strains were subjected to 16SrRNA sequencing and were identified as Lactobacilli. Based on the findings of the study, it could be concluded that homofermentative lactic acid bacteria with significant LA-producing ability can be obtained from different organic sources and may prove to be useful in the successful production of lactic acid for biotechnological applications.
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Affiliation(s)
- Jain Maria Stephen
- School of Bio Sciences and Technology, Vellore Institute of Technology, Vellore, India
- VIT School of Agricultural Innovations and Advanced Learning, Vellore Institute of Technology, Vellore, India
| | - Arabi Mohammed Saleh
- VIT School of Agricultural Innovations and Advanced Learning, Vellore Institute of Technology, Vellore, India
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Chen L, Wang Y, Li X, MacAdam JW, Zhang Y. Interaction between plants and epiphytic lactic acid bacteria that affect plant silage fermentation. Front Microbiol 2023; 14:1164904. [PMID: 37362945 PMCID: PMC10290204 DOI: 10.3389/fmicb.2023.1164904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Accepted: 05/17/2023] [Indexed: 06/28/2023] Open
Abstract
Lactic acid bacteria (LAB) have the ability to ferment water-soluble carbohydrates, resulting in the production of significant amounts of lactic acid. When utilized as additives in silage fermentation and feed, they have been shown to enhance the quality of these products. Epiphytic LAB of plants play a major role in the fermentation of silage plants. Plant species in turn affect the community structure of epiphytic LAB. In recent years, an increasing number of studies have suggested that epiphytic LAB are more effective than exogenous LAB when applied to silage. Inoculating silage plants with epiphytic LAB has attracted extensive attention because of the potential to improve the fermentation quality of silages. This review discusses the interaction of epiphytic LAB with plants during silage fermentation and compares the effects of exogenous and epiphytic LAB on plant fermentation. Overall, this review provides insight into the potential benefits of using epiphytic LAB as an inoculant and proposes a theoretical basis for improving silage quality.
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Affiliation(s)
- Lijuan Chen
- College of Animal Science and Technology, Anhui Agricultural University, Hefei, China
| | - Yili Wang
- College of Animal Science and Technology, Anhui Agricultural University, Hefei, China
| | - Xi Li
- College of Animal Science and Technology, Anhui Agricultural University, Hefei, China
| | - Jennifer W. MacAdam
- College of Agriculture and Applied Sciences, Utah State University, Logan, UT, United States
| | - Yunhua Zhang
- College of Resources and Environment, Anhui Agricultural University, Hefei, China
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Xia GH, Wu CR, Zhang MZ, Yang F, Chen C, Hao J. The metabolome and bacterial composition of high-moisture Italian ryegrass silage inoculated with lactic acid bacteria during ensiling. BIOTECHNOLOGY FOR BIOFUELS AND BIOPRODUCTS 2023; 16:91. [PMID: 37245019 DOI: 10.1186/s13068-023-02346-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2022] [Accepted: 05/23/2023] [Indexed: 05/29/2023]
Abstract
BACKGROUND With its high nutritional value and productivity, Italian ryegrass as a biomass feedstock constantly supplies rumen degradable nitrogen and digestible fiber to ruminants. However, biofuel production is easily reduced during ensiling due to the high-moisture content of Italian ryegrass, leading to economic losses. Lactic acid bacteria inoculants could improve lignocellulosic degradation and fermentation quality and decrease dry matter loss during the bioprocessing of silage. Therefore, this study analyzed the effects of Lactobacillus buchneri TSy1-3 (HE), Lactobacillus rhamnosus BDy3-10 (HO), and the combination of HE and HO (M) on fermentation quality, bacterial community and metabolome in high-moisture Italian ryegrass silage during ensiling. RESULTS The results showed that the pH value was significantly lower in the HO groups than in the other treatments at the end of ensiling, and the dry matter and acetic acid contents were significantly higher in the HO group than in the other inoculated groups. All inoculants decreased the diversity of the bacterial community and significantly increased the relative abundance of Lactobacillus. Inoculation with HO significantly improved the concentrations of organic acids, dipeptides, ferulic acid, apigenin, and laricitrin. Compared with Lactobacillus buchneri TSy1-3 (HE), HO significantly upregulated the flavonoid compounds in the flavone and flavonol biosynthesis pathway. CONCLUSIONS Overall, these findings suggest that inoculation with HO was beneficial for the development of Italian ryegrass as a biomass feedstock, improving fermentation quality, accelerating changes in bacterial community composition and increasing biofunctional metabolites in high-moisture Italian ryegrass silage.
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Affiliation(s)
- Guang-Hao Xia
- College of Animal Science, Guizhou University, Guiyang, 550025, China
| | - Chang-Rong Wu
- College of Animal Science, Guizhou University, Guiyang, 550025, China
| | - Ming-Zhu Zhang
- College of Animal Science, Guizhou University, Guiyang, 550025, China
| | - Feng Yang
- GuiZhou Grassland Technology Extending Station, Guiyang, 550025, China
| | - Chao Chen
- College of Animal Science, Guizhou University, Guiyang, 550025, China
- Key Laboratory of Animal Genetics, Breeding and Reproduction in the Plateau Mountainous Region, Ministry of Education, Guizhou University, Guiyang, 550025, China
| | - Jun Hao
- College of Animal Science, Guizhou University, Guiyang, 550025, China.
- Key Laboratory of Animal Genetics, Breeding and Reproduction in the Plateau Mountainous Region, Ministry of Education, Guizhou University, Guiyang, 550025, China.
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Wu C, Sun W, Huang Y, Dai S, Peng C, Zheng Y, Chen C, Hao J. Effects of different additives on the bacterial community and fermentation mode of whole-plant paper mulberry silage. Front Microbiol 2022; 13:904193. [PMID: 36160218 PMCID: PMC9493322 DOI: 10.3389/fmicb.2022.904193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Accepted: 08/23/2022] [Indexed: 11/13/2022] Open
Abstract
The purpose of this study was to investigate the effects of inoculation with two lactic acid bacteria (LAB) strains (Lacticaseibacillus rhamnosus and Lentilactobacillus buchneri) and the addition of four corn flour proportions (0, 3, 6, and 9%) in different treatments, on the composition and function of the bacterial community in whole-plant paper mulberry silage. The different treatments promoted Lactiplantibacillus, Lentilactobacillus, and Lacticaseibacillus growth, but the microbial species responsible for fermentation differed among the treatments. High species diversity and various Gram-negative bacteria, such as Flavitalea sp., Pantoea agglomerans, Acinetobacter pittii, Turicibacter sanguinis, and Ralstonia pickettii, were found in the uninoculated LAB treatments. A beneficial bacterium, Lactobacillus johnsonii, was discovered for the first time in whole-plant paper mulberry silage. LAB inoculation simplifies the microbial community structure, and beneficial Lactobacillus as a key species aggregates in the inoculated treatment group. However, L. rhamnosus inoculation alone may have limited bacteriostatic activity against in whole-plant paper mulberry silage. Compared with silage lacking corn flour, amino sugar and nucleotide sugar metabolism, galactose metabolism, the phosphotransferase system and the pentose phosphate pathway metabolic activity were increased in corn flour-containing silage. Whole-plant paper mulberry can be used as a high-quality silage to provide high-quality feed resources for sustainable ruminant livestock production. Moreover, additive use is necessary for preparing paper mulberry silage.
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Meruvu H, Harsa ST. Lactic acid bacteria: isolation-characterization approaches and industrial applications. Crit Rev Food Sci Nutr 2022; 63:8337-8356. [PMID: 35348017 DOI: 10.1080/10408398.2022.2054936] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The current state-of-art research pertaining to lactic acid bacteria (LAB) calls for the screening and isolation of robust LAB strains to achieve holistic exploitation of LAB and their metabolites of marketable importance. Hence it is imperative to comprehend LAB sources, growth requisites, isolation and characterization strategies necessary for featured cataloging and appropriate culturing. This review comprehensively describes various growth media and biomasses used for supporting LAB sustenance, assay procedures needed for the isolation and characterization of LAB strains, and their application in diverse sectors. The various industrial patents and their summarized claims about novel LAB strains isolated and identified, methods and media (used for detection/screening, isolation, adaptation, culturing, preservation, growth improvement), the techniques and/or methodologies supporting LAB fermentation, and applications of produced industrial metabolites in various market scenarios are detailed.
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Affiliation(s)
- Haritha Meruvu
- CEO, Revathi Hospital, Revathi Firm, Rajahmundry, Andhra Pradesh, India
- School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Sebnem Tellioglu Harsa
- Faculty of Engineering, Department of Food Engineering, İzmir Institute of Technology, Gulbahçe Campus, Urla, İzmir, Turkey
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Jung JS, Ravindran B, Soundharrajan I, Awasthi MK, Choi KC. Improved performance and microbial community dynamics in anaerobic fermentation of triticale silages at different stages. BIORESOURCE TECHNOLOGY 2022; 345:126485. [PMID: 34871725 DOI: 10.1016/j.biortech.2021.126485] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Revised: 11/27/2021] [Accepted: 11/30/2021] [Indexed: 06/13/2023]
Abstract
Production of high-quality grass-based silages by microbial-mediated anaerobic fermentation is an effective strategy in livestock farms. In the present study, an ensiling process was used to preserve and enhance fermentative metabolites in triticale silages with novel inoculants of Lactobacillus rhamanosus -52 and, Lactobacillus rhamanosus-54. Triticale silages treated with LAB predominantly had lower pH values than control silages due to rapid changes of microbial counts. LAB addition improved anaerobic fermentation profiles showing higher lactic acid, but lower acetic acid and butyric acid concentrations. A background microbial dynamic study indicated that the addition of L. rhamanosus-52 and L. rhamanosus-54 improved silage fermentation, enriched Lactobacillus spp., and decreased microbial richness with diversity, leading to increased efficiency of lactic acid fermentation. In conclusion, LAB treatment can increase silage quality by enhancing the dominance of desirable Lactobacillus while inhibiting the growth of undesirable microbes.
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Affiliation(s)
- Jeong Sung Jung
- Grassland and Forage Division, National Institute of Animal Science, RDA, 31000, Republic of Korea
| | - Balasubramani Ravindran
- Department of Environmental Energy and Engineering, Kyonggi University Youngtong-Gu, Suwon, Gyeonggi-Do 16227, Republic of Korea
| | - Ilavenil Soundharrajan
- Grassland and Forage Division, National Institute of Animal Science, RDA, 31000, Republic of Korea
| | - Mukesh Kumar Awasthi
- College of Natural Resources and Environment, Northwest A&F University, Taicheng Road 3#, Yangling, Shaanxi 712100, PR China
| | - Ki Choon Choi
- Grassland and Forage Division, National Institute of Animal Science, RDA, 31000, Republic of Korea.
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Addition of Lactic Acid Bacteria Can Promote the Quality and Feeding Value of Broussonetia papyrifera (Paper Mulberry) Silage. FERMENTATION-BASEL 2022. [DOI: 10.3390/fermentation8010025] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
In this study, the influence of two lactic acid bacteria (LAB) strains [Lactobacillus rhamnosus BDy (LR-BDy) and Lactobacillus buchneri TSy (LB-TSy)] selected from Southwest China on the fermentation characteristics and in vitro gas production of Broussonetia papyrifera (paper mulberry) silage were experimentally explored. The experimental groups were a control group (C), an LB-TSy treatment (LB), an LR-BDy treatment (LR), and an LR-BDy + LB-TSy hybrid group (LR × LB). After the LAB were added, the pH value of paper mulberry silage significantly declined (p < 0.05), and the crude protein content was effectively preserved (p < 0.05). However, no significant changes were found in the levels of neutral detergent fiber, acid detergent fiber, and crude ash (p > 0.05). The lactic acid content in paper mulberry silage was evidently increased (p < 0.05). The in vitro gas production in the LR at 36, 48, and 72 h were markedly higher than that in the other treatments (p < 0.05). Owing to the addition of LAB, the microbial diversity in paper mulberry silage was reduced, while the relative bacterial abundance of Lactobacillus was enhanced. Hence, the addition of LAB selected from the warm and humid region in Southwest China can improve the quality of paper mulberry silage and elevate its feeding value in this region.
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