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Du G, Shi J, Zhang J, Ma Z, Liu X, Yuan C, Zhang B, Zhang Z, Harrison MD. Exogenous Probiotics Improve Fermentation Quality, Microflora Phenotypes, and Trophic Modes of Fermented Vegetable Waste for Animal Feed. Microorganisms 2021; 9:microorganisms9030644. [PMID: 33808890 PMCID: PMC8003719 DOI: 10.3390/microorganisms9030644] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 03/15/2021] [Accepted: 03/16/2021] [Indexed: 01/02/2023] Open
Abstract
The fermentation of leaf vegetable waste to produce animal feed reduces the environmental impact of vegetable production and transforms leaf vegetable waste into a commodity. We investigated the effect of exogenous probiotics and lignocellulose enzymes on the quality and microbial community of fermented feed (FF) produced from cabbage waste. The addition of exogenous probiotics resulted in increased crude protein (CP) content (p < 0.05), better odor (moderate organic acid and ethanol, with low ammonia-N, p < 0.05), and a lower relative abundance (RA) of pathogens (below 0.4%, p < 0.05) in FF, compared to without. With the addition of exogenous probiotics, only Pediococcus and Saccharomyces were enriched and symbiotic in FF; these were the keystone taxa to reduce the abundance of aerobic, form-biofilms, and pathogenic microorganisms, resulting in an efficient anaerobic fermentation system characterized by facultative anaerobic and Gram-positive bacterial communities, and undefined saprotroph fungal communities. Thus, inoculation of vegetable waste fermentation with exogenous probiotics is a promising strategy to enhance the biotransformation of vegetable waste into animal feed.
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Affiliation(s)
- Guilin Du
- Lab of Biorefinery, Shanghai Advanced Research Institute, Chinese Academy of Sciences, No. 99 Haike Road, Pudong, Shanghai 201210, China; (G.D.); (J.S.); (J.Z.); (Z.M.); (X.L.); (C.Y.)
- University of Chinese Academy of Sciences, Beijing 100049, China
- School of Life Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Jiping Shi
- Lab of Biorefinery, Shanghai Advanced Research Institute, Chinese Academy of Sciences, No. 99 Haike Road, Pudong, Shanghai 201210, China; (G.D.); (J.S.); (J.Z.); (Z.M.); (X.L.); (C.Y.)
- University of Chinese Academy of Sciences, Beijing 100049, China
- School of Life Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Jingxian Zhang
- Lab of Biorefinery, Shanghai Advanced Research Institute, Chinese Academy of Sciences, No. 99 Haike Road, Pudong, Shanghai 201210, China; (G.D.); (J.S.); (J.Z.); (Z.M.); (X.L.); (C.Y.)
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhiguo Ma
- Lab of Biorefinery, Shanghai Advanced Research Institute, Chinese Academy of Sciences, No. 99 Haike Road, Pudong, Shanghai 201210, China; (G.D.); (J.S.); (J.Z.); (Z.M.); (X.L.); (C.Y.)
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiangcen Liu
- Lab of Biorefinery, Shanghai Advanced Research Institute, Chinese Academy of Sciences, No. 99 Haike Road, Pudong, Shanghai 201210, China; (G.D.); (J.S.); (J.Z.); (Z.M.); (X.L.); (C.Y.)
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Chenyang Yuan
- Lab of Biorefinery, Shanghai Advanced Research Institute, Chinese Academy of Sciences, No. 99 Haike Road, Pudong, Shanghai 201210, China; (G.D.); (J.S.); (J.Z.); (Z.M.); (X.L.); (C.Y.)
- University of Chinese Academy of Sciences, Beijing 100049, China
- School of Life Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Baoguo Zhang
- Lab of Biorefinery, Shanghai Advanced Research Institute, Chinese Academy of Sciences, No. 99 Haike Road, Pudong, Shanghai 201210, China; (G.D.); (J.S.); (J.Z.); (Z.M.); (X.L.); (C.Y.)
- University of Chinese Academy of Sciences, Beijing 100049, China
- Correspondence: ; Tel.: +86-(21)-2032-5161; Fax: +86-(21)-2032-5173
| | - Zhanying Zhang
- Centre for Agriculture and the Bioeconomy, Faculty of Science, Queensland University of Technology, Brisbane, QLD 4000, Australia; (Z.Z.); (M.D.H.)
- School of Mechanical, Medical and Process Engineering, Faculty of Engineering, Queensland University of Technology, Brisbane, QLD 4000, Australia
| | - Mark D. Harrison
- Centre for Agriculture and the Bioeconomy, Faculty of Science, Queensland University of Technology, Brisbane, QLD 4000, Australia; (Z.Z.); (M.D.H.)
- School of Biology and Environmental Science, Faculty of Science, Queensland University of Technology, Brisbane, QLD 4000, Australia
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Ren H, Feng Y, Pei J, Li J, Wang Z, Fu S, Zheng Y, Li Z, Peng Z. Effects of Lactobacillus plantarum additive and temperature on the ensiling quality and microbial community dynamics of cauliflower leaf silages. BIORESOURCE TECHNOLOGY 2020; 307:123238. [PMID: 32247271 DOI: 10.1016/j.biortech.2020.123238] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2020] [Revised: 03/18/2020] [Accepted: 03/19/2020] [Indexed: 06/11/2023]
Abstract
In order to enable rapid disposal and proper preservation of discarded vegetable for waste valorization, ensiling was employed to preserve cauliflower leaves for 30 days at different temperatures (20 ~ 45 °C) with and without the addition of Lactobacillus plantarum L8. The L. plantarum inoculant reduced dry matter (DM) loss and enhanced the preservation of protein and soluble carbohydrate while decreasing pH and ammonia nitrogen content. The silages at 35 °C exhibited the best fermentation profile characterized by the highest lactic acid content (185 g·kg-1 DM) and the lowest pH (4.08) and ammonia nitrogen content (37.6 g·kg-1 total nitrogen) with L. plantarum inoculation. The presence of exogenous L. plantarum improved the silage fermentation, enriched Lactobacillus and Weissella, and reduced the microbial richness/diversity, resulting in efficient lactic acid fermentation, especially at 30 and 35 °C. Moreover, the microbial community dynamics was correlated with the chemical compositions and fermentation metabolites in silages.
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Affiliation(s)
- Haiwei Ren
- School of Life Science and Engineering, Lanzhou University of Technology, Gansu Province Key Laboratory of Complementary Energy System of Biomass and Solar Energy, 287 Langongping Road, Lanzhou, Gansu Province 730050, PR China
| | - Yinping Feng
- School of Life Science and Engineering, Lanzhou University of Technology, Gansu Province Key Laboratory of Complementary Energy System of Biomass and Solar Energy, 287 Langongping Road, Lanzhou, Gansu Province 730050, PR China
| | - Jiawen Pei
- School of Life Science and Engineering, Lanzhou University of Technology, Gansu Province Key Laboratory of Complementary Energy System of Biomass and Solar Energy, 287 Langongping Road, Lanzhou, Gansu Province 730050, PR China
| | - Jinping Li
- School of Life Science and Engineering, Lanzhou University of Technology, Gansu Province Key Laboratory of Complementary Energy System of Biomass and Solar Energy, 287 Langongping Road, Lanzhou, Gansu Province 730050, PR China
| | - Zhiye Wang
- Institute of Biology, Gansu Academy of Sciences, 229 South Dingxi Road, Lanzhou, Gansu Province 73000, PR China
| | - Shanfei Fu
- School of Environment and Civil Engineering, Jiangnan University, 1800 Lihu Avenue, Wuxi, Jiangsu Province 214122, PR China
| | - Yi Zheng
- Department of Grain Science and Industry, Kansas State University, 101C BIVAP, 1980 Kimball Avenue, Manhattan, KS 66506, United States.
| | - Zhizhong Li
- School of Life Science and Engineering, Lanzhou University of Technology, Gansu Province Key Laboratory of Complementary Energy System of Biomass and Solar Energy, 287 Langongping Road, Lanzhou, Gansu Province 730050, PR China
| | - Zhangpu Peng
- Institute of Biology, Gansu Academy of Sciences, 229 South Dingxi Road, Lanzhou, Gansu Province 73000, PR China
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