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Xu J, Zhang K, Lin Y, Li M, Wang X, Yu Q, Sun H, Cheng Q, Xie Y, Wang C, Li P, Chen C, Yang F, Zheng Y. Effect of cellulase and lactic acid bacteria on the fermentation quality, carbohydrate conversion, and microbial community of ensiling oat with different moisture contents. Front Microbiol 2022; 13:1013258. [PMID: 36274697 PMCID: PMC9581316 DOI: 10.3389/fmicb.2022.1013258] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2022] [Accepted: 09/06/2022] [Indexed: 11/13/2022] Open
Abstract
Oat (Avena sativa L.) is one of the most widely cultivated crops used as forage. The aim of this study was to evaluate the effects of cellulase and Lactobacillus plantarum interactions with different moisture contents on oat ensiling. Oats with three moisture contents were treated with nothing (C), cellulase (CE), lactic acid bacteria (LP), or CE+LP and ensiled for 30 and 60 days. Compared with the control, LP and CE treatments increased crude protein and lactic acid concentrations and reduced the pH and ammonia nitrogen/total nitrogen (NH3-N/TN) ratios of silages. The addition of CE improved lignocellulosic degradation, compared with approximately 67% (LD) and 81% moisture content (HD) ensiling, CE (CE, CE+LP) ensiling in the approximately 75% moisture content (MD) group retained higher water-soluble carbohydrate, glucose, sucrose and fructose concents. The LP and CE inoculations significantly reduced the microbial community diversity, and lower values for the observed species, ACE, Chao1, and Shannon indices compared with CK-treated samples. Additives inhibited the growth of unfavorable bacteria (such as Clostridium) and increased the abundances of lactic acid bacteria (LAB); the maximum increases in the Lactiplantibacillus abundance were obtained in the LP- and CE+LP-treated samples, improving the microbial community structure in silage. In summary, adding LP and CE effectively improved the oat fermentation quality, and better performances in ensiling oat and lignocellulose degradation were obtained with LP and CE combinations, especially for the MD group of silages that were ensiled for 60 days. The addition of CE and LP at the appropriate moisture content might be helpful for producing high-quality oat silage, and also provide a simple and feasible method to enhance the effects of bacteria and enzymes.
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Affiliation(s)
- Jinyi Xu
- College of Animal Science, Guizhou University, Guiyang, China
| | - Keyi Zhang
- College of Grassland Science and Technology, China Agricultural University, Beijing, China
| | - Yufan Lin
- College of Grassland Science and Technology, China Agricultural University, Beijing, China
| | - Mengxin Li
- College of Animal Science, Guizhou University, Guiyang, China
| | - Xuekai Wang
- College of Grassland Science and Technology, China Agricultural University, Beijing, China
| | - Qiang Yu
- College of Animal Science, Guizhou University, Guiyang, China
| | - Hong Sun
- College of Animal Science, Guizhou University, Guiyang, China
| | - Qiming Cheng
- College of Animal Science, Guizhou University, Guiyang, China
| | - Yixiao Xie
- College of Animal Science, Guizhou University, Guiyang, China
| | - Chunmei Wang
- College of Animal Science, Guizhou University, Guiyang, China
| | - Ping Li
- College of Animal Science, Guizhou University, Guiyang, China
| | - Chao Chen
- College of Animal Science, Guizhou University, Guiyang, China
| | - Fuyu Yang
- College of Animal Science, Guizhou University, Guiyang, China
- College of Grassland Science and Technology, China Agricultural University, Beijing, China
| | - Yulong Zheng
- College of Animal Science, Guizhou University, Guiyang, China
- *Correspondence: Yulong Zheng,
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Application of HRP-streptavidin bionanoparticles for potentiometric biotin determination. Bioelectrochemistry 2021; 144:107993. [PMID: 34823072 DOI: 10.1016/j.bioelechem.2021.107993] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Revised: 10/15/2021] [Accepted: 11/02/2021] [Indexed: 01/02/2023]
Abstract
Biotin is widely used in infant formula to prevent biotin deficiency of newborn babies and in beauty products as nutritional supplements for coenzymatic functions and having strong nails, shiny hair, and skin over the last few years. There is a need for the development of a fast, simple and reusable assay method to perform biotin determination at very low concentrations. Biotin determination has achieved with a prepared potentiometric biotin sensor that has a very wide concentration range (10-15M-10-7M) and a lower detection limit (0.3 10-15M) with a very good regression coefficient (0.9925). A quick response (7 min), good accuracy (recovery 100.4-103.7%), reproducible, reusable (10 times), and long-term stability (3 months) have been obtained using the prepared potentiometric sensor. The obtained results have proved that the prepared potentiometric sensor can be used for biotin determination in real samples.
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Vahabi H, Brosse N, Latif NA, Fatriasari W, Solihat N, Hashim R, Hazwan Hussin M, Laoutid F, Saeb M. Nanolignin in materials science and technology— does flame retardancy matter? BIOPOLYMERIC NANOMATERIALS 2021:515-559. [DOI: 10.1016/b978-0-12-824364-0.00003-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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Bilal M, Rasheed T, Zhao Y, Iqbal HMN, Cui J. "Smart" chemistry and its application in peroxidase immobilization using different support materials. Int J Biol Macromol 2018; 119:278-290. [PMID: 30041033 DOI: 10.1016/j.ijbiomac.2018.07.134] [Citation(s) in RCA: 104] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2018] [Revised: 07/18/2018] [Accepted: 07/20/2018] [Indexed: 02/08/2023]
Abstract
In the past few decades, the enzyme immobilization technology has been exploited a lot and thus became a matter of rational design. Immobilization is an alternative approach to bio-catalysis with the added benefits, adaptability to automation and high-throughput applications. Immobilization-based approaches represent simple but effective routes for engineering enzyme catalysts with higher activities than wild-type or pristine counterparts. From the chemistry viewpoint, the concept of stabilization via manipulation of functional entities, the enzyme surfaces have been an important driving force for immobilizing purposes. In addition, the unique physiochemical and structural functionalities of pristine or engineered cues, or insoluble support matrices (carrier) such as mean particle diameter, swelling behavior, mechanical strength, and compression behavior are of supreme interest and importance for the performance of the immobilized systems. Immobilization of peroxidases into/onto insoluble support matrices is advantageous for practical applications due to convenience in handling, ease separation of enzymes from a reaction mixture and the reusability. A plethora of literature is available explaining individual immobilization system. However, current literature lacks the chemistry viewpoint of immobilization. This review work presents state-of-the-art "Smart" chemistry of immobilization and novel potentialities of several materials-based cues with different geometries including microspheres, hydrogels and polymeric membranes, nanoparticles, nanofibers, composite and hybrid or blended support materials. The involvement of various functional groups including amino, thiol, carboxylic, hydroxyl, and epoxy groups via "click" chemistry, amine chemistry, thiol chemistry, carboxyl chemistry, and epoxy chemistry over the protein surfaces is discussed.
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Affiliation(s)
- Muhammad Bilal
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaian, 223003, China
| | - Tahir Rasheed
- School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Yuping Zhao
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaian, 223003, China
| | - Hafiz M N Iqbal
- Tecnologico de Monterrey, School of Engineering and Sciences, Campus Monterrey, Ave. Eugenio Garza Sada 2501, Monterrey, N.L. CP 64849, Mexico.
| | - Jiandong Cui
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin University of Science and Technology, No 29, 13th, Avenue, Tianjin Economic and Technological Development Area (TEDA), Tianjin 300457, China.
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