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Rinne M. Novel uses of ensiled biomasses as feedstocks for green biorefineries. J Anim Sci Biotechnol 2024; 15:36. [PMID: 38438873 PMCID: PMC10913225 DOI: 10.1186/s40104-024-00992-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Accepted: 01/02/2024] [Indexed: 03/06/2024] Open
Abstract
Perennial forage plants are efficient utilizers of solar radiation and nutrients so that there is a lot of scope to increase the production of green biomass in many areas. Currently, grasses are mainly used as feeds for ruminants and equines, but there could be higher added value use for several components of the green biomass. Interest in green biorefining has risen recently motivated by the increased sustainability pressures and need to break the reliance on fossil fuels. Novel products derived from grass, such as paper and packaging, nanofibers, animal bedding, novel protein feeds, extracted proteins, biochemicals, nutraceuticals, bioactive compounds, biogas and biochar could create new sustainable business opportunities in rural areas. Most green biorefinery concepts focus on using fresh green biomass as the feedstock, but preservation of it by ensiling would provide several benefits such as all-year-around availability of the feedstock and increased stability of the press juice and press cake. The major difference between fresh and ensiled grass is the conversion of water soluble carbohydrates into fermentation end products, mainly lactic and acetic acids, that lower the pH of the silage so that it becomes stable in anaerobic conditions. This has some important consequences on the processability and quality of products, which are partly positive and partly negative, e.g., degradation of protein into peptides, amino acids and ammonia. These aspects are discussed in this review.
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Affiliation(s)
- Marketta Rinne
- Natural Resources Institute Finland (Luke), Jokioinen, Finland.
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Kumar P, Abubakar AA, Verma AK, Umaraw P, Adewale Ahmed M, Mehta N, Nizam Hayat M, Kaka U, Sazili AQ. New insights in improving sustainability in meat production: opportunities and challenges. Crit Rev Food Sci Nutr 2023; 63:11830-11858. [PMID: 35821661 DOI: 10.1080/10408398.2022.2096562] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Treating livestock as senseless production machines has led to rampant depletion of natural resources, enhanced greenhouse gas emissions, gross animal welfare violations, and other ethical issues. It has essentially instigated constant scrutiny of conventional meat production by various experts and scientists. Sustainably in the meat sector is a big challenge which requires a multifaced and holistic approach. Novel tools like digitalization of the farming system and livestock market, precision livestock farming, application of remote sensing and artificial intelligence to manage production and environmental impact/GHG emission, can help in attaining sustainability in this sector. Further, improving nutrient use efficiency and recycling in feed and animal production through integration with agroecology and industrial ecology, improving individual animal and herd health by ensuring proper biosecurity measures and selective breeding, and welfare by mitigating animal stress during production are also key elements in achieving sustainability in meat production. In addition, sustainability bears a direct relationship with various social dimensions of meat production efficiency such as non-market attributes, balance between demand and consumption, market and policy failures. The present review critically examines the various aspects that significantly impact the efficiency and sustainability of meat production.
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Affiliation(s)
- Pavan Kumar
- Laboratory of Sustainable Animal Production and Biodiversity, Institute of Tropical Agriculture and Food Security, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
- Department of Livestock Products Technology, College of Veterinary Science, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana, Punjab, India
| | - Abubakar Ahmed Abubakar
- Laboratory of Sustainable Animal Production and Biodiversity, Institute of Tropical Agriculture and Food Security, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - Akhilesh Kumar Verma
- Department of Livestock Products Technology, College of Veterinary and Animal Sciences, Sardar Vallabhbhai Patel University of Agriculture and Technology, Meerut, Uttar Pradesh, India
| | - Pramila Umaraw
- Department of Livestock Products Technology, College of Veterinary and Animal Sciences, Sardar Vallabhbhai Patel University of Agriculture and Technology, Meerut, Uttar Pradesh, India
| | - Muideen Adewale Ahmed
- Department of Animal Science, Faculty of Agriculture, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - Nitin Mehta
- Department of Livestock Products Technology, College of Veterinary Science, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana, Punjab, India
| | - Muhammad Nizam Hayat
- Department of Animal Science, Faculty of Agriculture, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - Ubedullah Kaka
- Department of Companion Animal Medicine and Surgery, Faculty of Veterinary Medicine, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - Awis Qurni Sazili
- Laboratory of Sustainable Animal Production and Biodiversity, Institute of Tropical Agriculture and Food Security, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
- Department of Animal Science, Faculty of Agriculture, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
- Halal Products Research Institute, Putra Infoport, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
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Nazar M, Xu Q, Zahoor, Ullah MW, Khan NA, Iqbal B, Zhu D. Integrated laccase delignification with improved lignocellulose recalcitrance for enhancing enzymatic saccharification of ensiled rice straw. INDUSTRIAL CROPS AND PRODUCTS 2023; 202:116987. [DOI: 10.1016/j.indcrop.2023.116987] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/23/2024]
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Yi Q, Wang P, Tang H, Yu M, Zhao T, Sheng Z, Luo H. Fermentation Quality, In Vitro Digestibility, and Aerobic Stability of Ensiling Spent Mushroom Substrate with Microbial Additives. Animals (Basel) 2023; 13:ani13050920. [PMID: 36899777 PMCID: PMC10000080 DOI: 10.3390/ani13050920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 01/31/2023] [Accepted: 03/01/2023] [Indexed: 03/06/2023] Open
Abstract
This experiment investigated the effects of lactic acid bacteria and cellulase on the fermentation quality, in vitro digestibility, and aerobic stability of Flammulina velutipes spent mushroom substrate silage (F-silage) and Pleurotus eryngii spent mushroom substrate silage (P-silage). Silage treatments included groups without any additives (control), with lactic acid bacteria (L), with cellulase (E), and with lactic acid bacteria and cellulase (M). Data analysis was performed using independent sample t-test and analysis of variance. After 45 days of ensiling, the pH in F-silage and P-silage from the L, E, and M groups were lower than those in the control group (p < 0.05). The pH, acetic acid (AA), and propionic acid (PA) levels in P-silage were lower than those in F-silage, and the LA content in P-silage was higher than that in F-silage (p < 0.05). Compared with the control, the E treatment increased in vitro neutral detergent fibre digestibility (IVNDFD) and in vitro acid detergent fibre digestibility (IVADFD) in F-silage and P-silage (p < 0.05). The aerobic stability of F-silage inoculated with L increased (p < 0.05) by 24 h compared to the control. The aerobic stability of P-silage inoculated with M increased (p < 0.05) by 6 h compared to the control. The improvement in fermentation quality and aerobic stability is extremely large in terms of applying M in F-silage and P-silage. The E is effective in improving the in vitro digestibility of P-silage. The research results provide a theoretical basis for the production of high-quality spent mushroom substrate fermented feed.
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Affiliation(s)
- Qixuan Yi
- Department of Animal Science, Jilin University, Changchun 130062, China
| | - Peng Wang
- Department of Animal Science, Jilin University, Changchun 130062, China
- Correspondence:
| | - Hongyu Tang
- Department of Animal Science, Jilin University, Changchun 130062, China
| | - Meng Yu
- Department of Animal Science, Jilin University, Changchun 130062, China
| | - Tianyue Zhao
- Department of Animal Science, Jilin University, Changchun 130062, China
| | - Ziyang Sheng
- Sanya Institute of China Agricultural University, Sanya 572025, China
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China
| | - Hailing Luo
- Sanya Institute of China Agricultural University, Sanya 572025, China
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China
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Hou Z, Liu J, Cai M, Liu Y, Zhang M, Wang L, Yang W, Huang B. The volatile organic compounds and palatability of mixed ensilage of marigold (Tagetes erecta L.) crop residues. Sci Rep 2023; 13:2080. [PMID: 36747042 PMCID: PMC9902448 DOI: 10.1038/s41598-023-28511-5] [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: 06/11/2022] [Accepted: 01/19/2023] [Indexed: 02/08/2023] Open
Abstract
With increasing acreage of cash crops, the use of their by-products as supplements for livestock feed becomes an important factor. Marigold (Tagetes erecta L.) account for more than half of the world's loose flower production. However, there is no precedent for the abundantly available marigold crop residue (MCR) being used as feed in agricultural production, probably because of its strong pungent taste. This study aimed to evaluate the biotransformation of the volatile organic compounds (VOCs) of MCR by mixed ensilage and assess its palatability by cattle. Caryophyllene, the most prevalent VOC in MCR, decreased by 29.11% (P < 0.05), 38.85% (P < 0.05), 37.15% (P < 0.05), and 28.36% (P < 0.05) ensilage with corn meal (CM), bran (BR), crop corn (CC), and straw (ST), respectively. The acetic acid content increased by 686.05% (P < 0.05), 1337.21% (P < 0.05), 1244.19% (P < 0.05), and 1795.34% (P < 0.05) after mixed ensilage with CM, BR, CC, and ST, respectively. The total amount of alcoholic VOCs followed an overall increasing trend during mixed storage and 10 new alcohols were obtained. Over seven days, feed intake of mixed ensilage MCR by cattle differed significantly (P < 0.05) among treatments compared with MCR and was highest in MCRCM. Combined with palatability trials, the best MCR feed intake was achieved with MCRCM. The findings shed light on how feed odor can be improved and how degradation of terpenes can be enhanced in practical applications by mixed ensilage.
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Affiliation(s)
- Zhijiang Hou
- Institute of Alpine Economic Plant, Yunnan Academy of Agricultural Sciences, Lijiang, 674199, China.
| | - Jianyong Liu
- Yunnan Academy of Grassland and Animal Science, Kunming, 650212, China
| | - Ming Cai
- Yunnan Academy of Grassland and Animal Science, Kunming, 650212, China
| | - Yanpei Liu
- Yunnan Academy of Grassland and Animal Science, Kunming, 650212, China
| | - Meiyan Zhang
- Yunnan Academy of Grassland and Animal Science, Kunming, 650212, China
| | - Ling Wang
- Institute of Alpine Economic Plant, Yunnan Academy of Agricultural Sciences, Lijiang, 674199, China
| | - Wengao Yang
- Institute of Alpine Economic Plant, Yunnan Academy of Agricultural Sciences, Lijiang, 674199, China
| | - Bizhi Huang
- Yunnan Academy of Grassland and Animal Science, Kunming, 650212, China.
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Yakubu HG, Worku A, Tóthi R, Tóth T, Orosz S, Fébel H, Kacsala L, Húth B, Hoffmann R, Bazar G. Near-infrared spectroscopy for rapid evaluation of winter cereals and Italian ryegrass forage mixtures. Anim Sci J 2023; 94:e13823. [PMID: 36922402 DOI: 10.1111/asj.13823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Revised: 12/15/2022] [Accepted: 02/17/2023] [Indexed: 03/17/2023]
Abstract
Near-infrared (NIR) spectroscopy was employed to determine the differences between forage mixtures of winter cereals and Italian ryegrass and to evaluate fermentation characteristics of mixed silages. Forages were harvested on five phases (Cuts 1-5), with 1 week interval (n = 100). The yield of the last harvest (Cut 5) was ensiled and analyzed on four different days (D0, D7, D14, and D90) (n = 80). Principal component analysis based on the NIR data revealed differences according to the days of harvest, differences between winter cereals and Italian ryegrass forages, and differences in the fermentation stages of silages. The partial least square regression models for crude protein (CP), crude fiber (CF), and ash gave excellent determination coefficient in cross-validation (R2 CV > 0.9), while models for ether extract (EE) and total sugar content were weaker (R2 CV = 0.87 and 0.74, respectively). The values of root mean square error of cross-validation were 0.59, 0.76, 0.22, 0.31, and 2.36 %DM, for CP, CF, EE, ash, and total sugar, respectively. NIR proved to be an efficient tool in evaluating type and growth differences of the winter cereals and Italian ryegrass forage mixtures and the quality changes that occur during ensiling.
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Affiliation(s)
- Haruna Gado Yakubu
- Institute of Physiology and Animal Nutrition, Hungarian University of Agriculture and Life Sciences, Kaposvár, Hungary
| | - Alemayehu Worku
- Department of Animal and Range Science, College of Agricultural Sciences, Arba Minch University, Arba Minch, Ethiopia
| | - Róbert Tóthi
- Institute of Physiology and Animal Nutrition, Hungarian University of Agriculture and Life Sciences, Kaposvár, Hungary
| | - Tamás Tóth
- Agricultural and Food Research Centre, Széchenyi István University, Győr, Hungary.,ADEXGO Kft., Balatonfüred, Hungary
| | - Szilvia Orosz
- Livestock Performance Testing Ltd., Gödöllő, Hungary
| | - Hedvig Fébel
- Nutrition Physiology Research Group, Institute of Physiology and Animal Nutrition, Hungarian University of Agriculture and Life Sciences, Herceghalom, Hungary
| | - László Kacsala
- Institute of Physiology and Animal Nutrition, Hungarian University of Agriculture and Life Sciences, Kaposvár, Hungary
| | - Balázs Húth
- Agricultural and Food Research Centre, Széchenyi István University, Győr, Hungary
| | - Richárd Hoffmann
- Institute of Plant Production Sciences, Hungarian University of Agriculture and Life Sciences, Kaposvár, Hungary
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Characterization of Green Manure Sunn Hemp Crop Silage Prepared with Additives: Aerobic Instability, Nitrogen Value, and In Vitro Rumen Methane Production. FERMENTATION 2022. [DOI: 10.3390/fermentation8030104] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Sunn hemp (SH, Crotalaria juncea, L.) is a tropical multiple-purpose legume. The green manure SH (GMSH) crop might display protein ecology in sustaining ruminants; however, its silage features remain unclear. To efficiently prepare GMSH crop silage, additive treatments consisting of control (no additive, CON), molasses (MO), Acremonium cellulase (AC), and Lactobacillus casei TH14 strain inoculant (TH14) were implemented using a completely randomized design. Repeated measurements were done after silage (AE conditions) in a small-scale silo system for 120 days and after aerobic instability (AE + AIS conditions). Briefly, ensiling loss and aerobic stability ranged from 150 to 175 g/kg and 8.3 to 104 days, respectively. In AE conditions, the pH ranged from 4.33 to 5.74, and MO or AC was desirable (p < 0.01) for lactic acid fermentation. AC reduced the fiber contents. MO increased soluble non-protein nitrogen by decreasing insoluble nitrogen. TH14 increased the ammonia nitrogen level and in vitro methane production. In AE + AIS conditions, AC led to more air damage to the chemical compositions and reduced digestibility in vitro. The results show that an optimization of additives could effectively modify GMSH crop silage to make it a good protein roughage source; however, more studies are required for effectively feeding ruminants.
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Li J, Tang X, Chen S, Zhao J, Shao T. Ensiling pretreatment with two novel microbial consortia enhances bioethanol production in sterile rice straw. BIORESOURCE TECHNOLOGY 2021; 339:125507. [PMID: 34303101 DOI: 10.1016/j.biortech.2021.125507] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 06/30/2021] [Accepted: 07/01/2021] [Indexed: 06/13/2023]
Abstract
The present study extracts and enriches cellulolytic microbial consortia from yak (Bos grunniens) and evaluates their effects on the fermentation profile and bioethanol yield in rice straw silage. Two microbial consortia (CF and PY) with high cellulolytic activity were isolated and observed to be prone to utilize natural carbon sources. Two consortia were introduced with and without combined lactic acid bacteria (CLAB) to rice straw for up to 60 days of ensiling, and their application notably decreased the levels of structural carbohydrates and pH values of rice straw silages. Treatments that combining microbial consortia and CLAB resulted in the highest levels of lactic acid, water soluble carbohydrates, mono- and disaccharides, and lignocellulose degradation, with PY + CLAB group yielding the highest bioethanol production. The microbial consortia identified herein exhibit great potential for degrading fibrous substrates, and their combination with CLAB provides a feasible way to efficiently use rice straw for bioethanol production.
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Affiliation(s)
- Junfeng Li
- Institute of Ensiling and Processing of Grass, College of Agro-grassland Science, Nanjing Agricultural University, Nanjing 210095, China
| | - Xiaoyue Tang
- Institute of Ensiling and Processing of Grass, College of Agro-grassland Science, Nanjing Agricultural University, Nanjing 210095, China
| | - Sifan Chen
- Institute of Ensiling and Processing of Grass, College of Agro-grassland Science, Nanjing Agricultural University, Nanjing 210095, China
| | - Jie Zhao
- Institute of Ensiling and Processing of Grass, College of Agro-grassland Science, Nanjing Agricultural University, Nanjing 210095, China
| | - Tao Shao
- Institute of Ensiling and Processing of Grass, College of Agro-grassland Science, Nanjing Agricultural University, Nanjing 210095, China.
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Li J, Ding H, Zhao J, Wang S, Dong Z, Shao T. Characterization and identification of a novel microbial consortium M2 and its effect on fermentation quality and enzymatic hydrolysis of sterile rice straw. J Appl Microbiol 2021; 132:1687-1699. [PMID: 34662476 DOI: 10.1111/jam.15328] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Revised: 10/04/2021] [Accepted: 10/07/2021] [Indexed: 11/30/2022]
Abstract
AIMS To isolate and enrich lignocellulolytic microbial consortia from yak (Bos grunniens) rumen and evaluate their effects on the fermentation characteristics and enzymatic hydrolysis in rice straw silage. METHODS AND RESULTS A novel microbial consortium M2 with high CMCase and xylanase activities was enriched and observed to be prone to use natural carbon sources. Its predominant genus was Enterococcus, and most carbohydrate-active enzyme (CAZyme) genes belonged to the glycosyl hydrolases class. The consortium M2 was introduced with or without combined lactic acid bacteria (XA) to rice straw silage for 60 days. Inoculating the consortium M2 notably decreased the structural carbohydrate contents and pH of rice straw silages. Treatment that combines consortium M2 and XA resulted in the highest levels of lactic acid and lignocellulose degradation. The consortium M2 alone or combined with XA significantly (p < 0.01) increased water-soluble carbohydrates (WSCs), mono- and disaccharides contents compared with the XA silage. Combined addition obviously improved the enzymatic conversion efficiency of rice straw silage with higher glucose and xylose yields (23.39 and 12.91 w/w% DM, respectively). CONCLUSIONS Ensiling pretreatment with the microbial consortium M2 in sterile rice straw improved fermentation characteristics. The combined application of consortium M2 with XA had synergistic effects on promoting the degradation of structural carbohydrates and enzymatic hydrolysis. SIGNIFICANCE AND IMPACT OF THE STUDY Rice straw is difficult to ensile because of its low WSC and high structural carbohydrate contents. The microbial consortium M2 identified herein exhibits great potential for degrading fibrous substrates, and their combination with XA provides a faster and more effective synergistic strategy for biorefinery of lignocellulosic biomass.
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Affiliation(s)
- Junfeng Li
- Institute of Ensiling and Processing of Grass, College of Agro-grassland Science, Nanjing Agricultural University, Nanjing, China
| | - Hao Ding
- Institute of Ensiling and Processing of Grass, College of Agro-grassland Science, Nanjing Agricultural University, Nanjing, China
| | - Jie Zhao
- Institute of Ensiling and Processing of Grass, College of Agro-grassland Science, Nanjing Agricultural University, Nanjing, China
| | - Siran Wang
- Institute of Ensiling and Processing of Grass, College of Agro-grassland Science, Nanjing Agricultural University, Nanjing, China
| | - Zhihao Dong
- Institute of Ensiling and Processing of Grass, College of Agro-grassland Science, Nanjing Agricultural University, Nanjing, China
| | - Tao Shao
- Institute of Ensiling and Processing of Grass, College of Agro-grassland Science, Nanjing Agricultural University, Nanjing, China
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Jiang B, Wang T, Zhou Y, Li F. Effects of enzyme + bacteria treatment on growth performance, rumen bacterial diversity, KEGG pathways, and the CAZy spectrum of Tan sheep. Bioengineered 2020; 11:1221-1232. [PMID: 33100142 PMCID: PMC8291824 DOI: 10.1080/21655979.2020.1837459] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
In this study, the effects of enzyme +bacteria treatment of buckwheat straw and alfalfa on growth performance and rumen bacterial diversity was investigated, 20 three-month-old Ningxia Tan sheep with similar body weights were selected and randomly divided into two groups, 10 sheep in each group. The control group was fed with basal diet + untreated buckwheat straw and alfalfa (the ratio of buckwheat to alfalfa was 2:8), and the experimental group was fed with basic diet + cellulase (enzyme activity ≥ 10,000 U/g) + compound probiotics (enzyme to bacteria ratio 8:20). 1) The total weight gain and average daily gain of Tan sheep in the experimental group were extremely significantly higher than those in the control group (P < 0.01). 2). The proportion of Firmicutes in the experimental group was significantly higher than that in the control group (P < 0.05). 3). In the KEGG pathway B level, 15 genes were significantly higher than in the control group (P < 0.05). 4). In the CAZy level B, 12 genes were upregulated in the experimental group compared with the control group (P < 0.05),3 genes were downregulated (P < 0.05).Feeding Tan sheep with buckwheat straw and alfalfa treated with enzyme and bacteria can improve the weight gain effect, change the rumen bacterial diversity, and increase the some functional genes in the rumen. The conditions of this experiment would be beneficial to the healthy breeding of Tan sheep, and thus the methods can be used in commercial production.
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Affiliation(s)
- Biwei Jiang
- Agricultural College of Ningxia University , Yinchuan, China.,Ningxia Vocational and Technical College , Yinchuan, China
| | - Tian Wang
- Agricultural College of Ningxia University , Yinchuan, China
| | - Yuxiang Zhou
- Agricultural College of Ningxia University , Yinchuan, China
| | - Fei Li
- Agricultural College of Ningxia University , Yinchuan, China
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Xu D, Ding Z, Bai J, Ke W, Zhang Y, Li F, Guo X. Evaluation of the effect of feruloyl esterase-producing Lactobacillus plantarum and cellulase pretreatments on lignocellulosic degradation and cellulose conversion of co-ensiled corn stalk and potato pulp. BIORESOURCE TECHNOLOGY 2020; 310:123476. [PMID: 32402987 DOI: 10.1016/j.biortech.2020.123476] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 04/29/2020] [Accepted: 04/30/2020] [Indexed: 06/11/2023]
Abstract
The effects of feruloyl esterase-producing Lactobacillus plantarum A1, cellulase, or their combination on the fermentation characteristics, carbohydrate composition, and enzymatic hydrolysis of mixed corn stalk and potato pulp silage were investigated. Two mixture ratios were used: a weight ratio of rehydrated corn stalk to potato pulp of 35:1 (HD) and a weight ratio of dry corn stalk to potato pulp of 5:11 (LD). No advantage was observed with the addition of strain A1 alone for lignocellulosic degradation and cellulose conversion, while its combination with cellulase enhanced the lignocellulosic degradation and preserved more fermentable carbohydrates in co-ensiled corn stalk and potato pulp. The enzymatic hydrolysis results indicated a potential benefit of pretreatment for biogas production, as the co-ensiled HD ratio mixture without additive treatment showed high glucose yield after enzymatic hydrolysis following 60 d of fermentation.
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Affiliation(s)
- Dongmei Xu
- State Key Laboratory of Grassland and Agro-ecosystems, School of Life Sciences, Lanzhou University, Lanzhou 730000, PR China; Probiotics and Biological Feed Research Center, Lanzhou University, Lanzhou 730000, PR China
| | - Zitong Ding
- State Key Laboratory of Grassland and Agro-ecosystems, School of Life Sciences, Lanzhou University, Lanzhou 730000, PR China; Probiotics and Biological Feed Research Center, Lanzhou University, Lanzhou 730000, PR China
| | - Jie Bai
- State Key Laboratory of Grassland and Agro-ecosystems, School of Life Sciences, Lanzhou University, Lanzhou 730000, PR China; Probiotics and Biological Feed Research Center, Lanzhou University, Lanzhou 730000, PR China
| | - Wencan Ke
- State Key Laboratory of Grassland and Agro-ecosystems, School of Life Sciences, Lanzhou University, Lanzhou 730000, PR China; Probiotics and Biological Feed Research Center, Lanzhou University, Lanzhou 730000, PR China
| | - Yixin Zhang
- State Key Laboratory of Grassland and Agro-ecosystems, School of Life Sciences, Lanzhou University, Lanzhou 730000, PR China; Probiotics and Biological Feed Research Center, Lanzhou University, Lanzhou 730000, PR China
| | - Fuhou Li
- State Key Laboratory of Grassland and Agro-ecosystems, School of Life Sciences, Lanzhou University, Lanzhou 730000, PR China; Probiotics and Biological Feed Research Center, Lanzhou University, Lanzhou 730000, PR China
| | - Xusheng Guo
- State Key Laboratory of Grassland and Agro-ecosystems, School of Life Sciences, Lanzhou University, Lanzhou 730000, PR China; Probiotics and Biological Feed Research Center, Lanzhou University, Lanzhou 730000, PR China.
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Zhang C, You S, Zhang J, Qi W, Su R, He Z. An effective in-situ method for laccase immobilization: Excellent activity, effective antibiotic removal rate and low potential ecological risk for degradation products. BIORESOURCE TECHNOLOGY 2020; 308:123271. [PMID: 32247949 DOI: 10.1016/j.biortech.2020.123271] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 03/26/2020] [Accepted: 03/27/2020] [Indexed: 06/11/2023]
Abstract
In this study, we used a simple in-situ biomineralization method to immobilize Bacillus subtilis (B. subtilis)-derived laccase into the copper-Trimesic acid framework (Cu-BTC), and the synthesized Laccase@Cu-BTC particles were used to degrade tetracycline and ampicillin. Compared with free laccase, the Laccase@Cu-BTC showed 16.5-fold of activity recovery, higher thermo-tolerant performance, more excellent acid-proof ability and reusability. Without any mediators, Laccase@Cu-BTC displayed high degradation efficiency (nearly 100%) for tetracycline and ampicillin in some actual water. The degradation mechanism and proposed degradation pathways of tetracycline and ampicillin were discussed technically. Besides, bacteriostatic assay and survival test of Escherichia coli (E. coli) and B. subtilis confirmed the loss of antibiotic activity for tetracycline and ampicillin, as well as the low ecotoxicity of the degradation products. Our research demonstrates that Laccase@Cu-BTC has excellent performance in the effective removal of antibiotics and the detoxification of degradation products, which make it a promising candidate for environmental recovery.
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Affiliation(s)
- Chengyu Zhang
- Chemical Engineering Research Center, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, PR China
| | - Shengping You
- Chemical Engineering Research Center, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, PR China; Tianjin Key Laboratory of Membrane Science and Desalination Technology, Tianjin University, Tianjin 300072, PR China
| | - Jiaxing Zhang
- Chemical Engineering Research Center, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, PR China
| | - Wei Qi
- Chemical Engineering Research Center, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, PR China; State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300072, PR China; Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, PR China; Tianjin Key Laboratory of Membrane Science and Desalination Technology, Tianjin University, Tianjin 300072, PR China.
| | - Rongxin Su
- Chemical Engineering Research Center, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, PR China; State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300072, PR China; Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, PR China; Tianjin Key Laboratory of Membrane Science and Desalination Technology, Tianjin University, Tianjin 300072, PR China
| | - Zhimin He
- Chemical Engineering Research Center, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, PR China; State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300072, PR China
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