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Li Y, Tao X, Zhao P, Zhou J, Ao X. Effects of slaughter weight on carcass characteristics, meat quality, and metabolomics profiling in the longissimus dorsi muscle of Tianfu finishing pigs. Front Vet Sci 2024; 11:1420634. [PMID: 39005725 PMCID: PMC11239573 DOI: 10.3389/fvets.2024.1420634] [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: 04/20/2024] [Accepted: 06/10/2024] [Indexed: 07/16/2024] Open
Abstract
In order to investigate the effect of slaughter weight (SW) on carcass characteristics and meat quality, we measured the carcass characteristics, meat quality, and amino acid metabolomics characteristics of longissimus dorsi (LD) muscle from Tianfu finishing (TF) pigs. Based on SW, 13 pigs were divided into three groups (100-kg group, 125-kg group, and 150-kg group with 3, 5, 5 pigs in each group, respectively). Raising SW to 125 kg or 150 kg increased average backfat thickness (P < 0.01) and intramuscular fat content (P < 0.01), and decreased shear force (P < 0.01). A total of 231 amino acid metabolome from three amino acid classes identified with metabolomics were analyzed, and 93 differentially expressed metabolites (DEMs) were identified (69 up-regulated DEMs and 24 down-regulated DEMs). The DEMs, including urea, 3-iodo-L-tyrosine, N-glycyl-L-leucine, and N, N-dimethylglycine with amino acid metabolism, were significantly induced (P < 0.01). KEGG pathway analysis showed that these DEMs were significantly enriched (P < 0.01) in 135 metabolism pathways, including pathways related to amino acid metabolism, such as arginine and proline metabolism, glycine, serine and threonine metabolism, alanine, aspartate and glutamate metabolism, tryptophan metabolism, and beta-alanine metabolism. Our research findings provided new insights into the impact of SW on amino acid distribution and theoretical support for genetic breeding of meat quality of TF pigs. However, raising SW to 125 kg, or more, decreased the carcass leanness of live TF pigs and had no benefits to pork quality attributes.
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Affiliation(s)
- Yuanfeng Li
- School of Life Sciences, Liaocheng University, Liaocheng, Shandong, China
| | - Xuan Tao
- Faculty of Quality Management and Inspection & Quarantine, Yibin University, Yibin, China
- Animal Breeding and Genetics Key Laboratory of Sichuan Province, Sichuan Animal Science Academy, Chengdu, China
| | - Pinyao Zhao
- Faculty of Quality Management and Inspection & Quarantine, Yibin University, Yibin, China
- Solid-state Fermentation Resource Utilization Key Laboratory of Sichuan Province, Yibin, China
- Sichuan Higher Education Engineering Research Center for Agri-Food Standardization and Inspection, Yibin, China
| | - Jianchuan Zhou
- School of Animal Science and Technology, China Agricultural University, Beijing, China
- Sichuan Techlex Industrial Co. Ltd., Mianyang, China
| | - Xiang Ao
- Faculty of Quality Management and Inspection & Quarantine, Yibin University, Yibin, China
- Sichuan Techlex Industrial Co. Ltd., Mianyang, China
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Pei XD, Fan HL, Jiao DQ, Li F, He YN, Wu QL, Liu XL, Wang CH. Rational engineering S1' substrate binding pocket to enhance substrate specificity and catalytic activity of thermal-stable keratinase for efficient keratin degradation. Int J Biol Macromol 2024; 263:130688. [PMID: 38458294 DOI: 10.1016/j.ijbiomac.2024.130688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Revised: 02/24/2024] [Accepted: 03/05/2024] [Indexed: 03/10/2024]
Abstract
This study reports the rational engineering of the S1' substrate-binding pocket of a thermally-stable keratinase from Pseudomonas aeruginosa 4-3 (4-3Ker) to improve substrate specificity to typical keratinase (K/C > 0.5) and catalytic activity without compromising thermal stability for efficient keratin degradation. Of 10 chosen mutation hotspots in the S1' substrate-binding pocket, the top three mutations M128R, A138V, and V142I showing the best catalytic activity and substrate specificity were identified. Their double and triple combinatorial mutants synergistically overcame limitations of single mutants, fabricating an excellent M128R/A138V/V142I triple mutant which displayed a 1.21-fold increase in keratin catalytic activity, 1.10-fold enhancement in keratin/casein activity ratio, and a 3.13 °C increase in half-inactivation temperature compared to 4-3Ker. Molecular dynamics simulations revealed enhanced flexibility of critical amino acid residues at the substrate access tunnel, improved global protein rigidity, and heightened hydrophobicity within the active site likely underpinned the increased catalytic activity and substrate specificity. Additionally, the triple mutant improved the feather degradation rate by 32.86 % over the wild-type, far exceeding commercial keratinase in substrate specificity and thermal stability. This study exemplified engineering a typical keratinase with enhanced substrate specificity, catalytic activity, and thermal stability from thermally-stable 4-3Ker, providing a more robust tool for feather degradation.
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Affiliation(s)
- Xiao-Dong Pei
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, People's Republic of China; Key Laboratory of Deep Processing and Safety Control for Specialty Agricultural Products in Guangxi Universities, Education Department of Guangxi Zhuang Autonomous Region, Nanning 530004, People's Republic of China
| | - He-Liang Fan
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, People's Republic of China; Guangxi College and University Key Laboratory of High-value Utilization of Seafood and Prepared Food in Beibu Gulf, Qinzhou 535011, People's Republic of China
| | - Dao-Quan Jiao
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, People's Republic of China
| | - Fan Li
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, People's Republic of China
| | - Yi-Ning He
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, People's Republic of China
| | - Qing-Ling Wu
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, People's Republic of China
| | - Xiao-Ling Liu
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, People's Republic of China
| | - Cheng-Hua Wang
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, People's Republic of China; Key Laboratory of Deep Processing and Safety Control for Specialty Agricultural Products in Guangxi Universities, Education Department of Guangxi Zhuang Autonomous Region, Nanning 530004, People's Republic of China.
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Yan X, Ying Y, Li K, Zhang Q, Wang K. A review of mitigation technologies and management strategies for greenhouse gas and air pollutant emissions in livestock production. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 352:120028. [PMID: 38219668 DOI: 10.1016/j.jenvman.2024.120028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Revised: 12/06/2023] [Accepted: 01/02/2024] [Indexed: 01/16/2024]
Abstract
One of the key issues in manure management of livestock production is to reduce greenhouse gas (GHG) and air pollutant emissions, which lead to significant environmental footprint and human/animal health threats. This study provides a review of potentially efficacious technologies and management strategies that reduce GHG and air pollutant emissions during the three key stages of manure management in livestock production, i.e., animal housing, manure storage and treatment, and manure application. Several effective mitigation technologies and practices for each manure management stage are identified and analyzed in detail, including feeding formulation adjustment, frequent manure removal and air scrubber during animal housing stage; solid-liquid separation, manure covers for storage, acidification, anaerobic digestion and composting during manure storage and treatment stage; land application techniques at appropriate timing during manure application stage. The results indicated several promising approaches to reduce multiple gas emissions from the entire manure management. Removing manure 2-3 times per week or every day during animal housing stage is an effective and simple way to reduce GHG and air pollutant emissions. Acidification during manure storage and treatment stage can reduce ammonia and methane emissions by 33%-93% and 67%-87%, respectively and proper acid, such as lactic acid can also reduce nitrous oxide emission by about 90%. Shallow injection of manure for field application has the best performance in reducing ammonia emission by 62%-70% but increase nitrous oxide emission. The possible trade-off brings insight to the prioritization of targeted gas emissions for the researchers, stakeholders and policymakers, and also highlights the importance of assessing the mitigation technologies across the entire manure management chain. Implementing a combination of the management strategies needs comprehensive considerations about mitigation efficiency, technical feasibility, local regulations, climate condition, scalability and cost-effectiveness.
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Affiliation(s)
- Xiaojie Yan
- School of Optical, Mechanical and Electrical Engineering, Zhejiang Agriculture & Forestry University, Hangzhou, 311300, Zhejiang, China; College of Biosystems Engineering and Food Science, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, Zhejiang, China; Guangxi Yangxiang Co., Ltd., Gangnan District, Guigang, 537106, Guangxi, China
| | - Yongfei Ying
- Zhejiang Province Animal Husbandry Technology Promotion and Breeding Livestock and Poultry Monitoring Station, Zhejiang Province Department of Agriculture, 111 Yuyun Road, Hangzhou, 310020, Zhejiang, China
| | - Kunkun Li
- Department of Plant Molecular Biology, University of Lausanne, 1015 Lausanne, Switzerland
| | - Qiang Zhang
- Department of Biosystems Engineering, University of Manitoba, Winnipeg, MB, R3T 2N2, Canada
| | - Kaiying Wang
- College of Biosystems Engineering and Food Science, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, Zhejiang, China.
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Siriwat W, Ungwiwatkul S, Unban K, Laokuldilok T, Klunklin W, Tangjaidee P, Potikanond S, Kaur L, Phongthai S. Extraction, Enzymatic Modification, and Anti-Cancer Potential of an Alternative Plant-Based Protein from Wolffia globosa. Foods 2023; 12:3815. [PMID: 37893708 PMCID: PMC10606862 DOI: 10.3390/foods12203815] [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: 09/25/2023] [Revised: 10/13/2023] [Accepted: 10/16/2023] [Indexed: 10/29/2023] Open
Abstract
The global plant-based protein demand is rapidly expanding in line with the increase in the world's population. In this study, ultrasonic-assisted extraction (UAE) was applied to extract protein from Wolffia globosa as an alternative source. Enzymatic hydrolysis was used to modify the protein properties for extended use as a functional ingredient. The successful optimal conditions for protein extraction included a liquid to solid ratio of 30 mL/g, 25 min of extraction time, and a 78% sonication amplitude, providing a higher protein extraction yield than alkaline extraction by about 2.17-fold. The derived protein was rich in essential amino acids, including leucine, valine, and phenylalanine. Protamex and Alcalase were used to prepare protein hydrolysates with different degrees of hydrolysis, producing protein fragments with molecular weights ranging between <10 and 61.5 kDa. Enzymatic hydrolysis caused the secondary structural transformations of proteins from β-sheets and random coils to α-helix and β-turn structures. Moreover, it influenced the protein functional properties, particularly enhancing the protein solubility and emulsifying activity. Partial hydrolysis (DH3%) improved the foaming properties of proteins; meanwhile, an excess hydrolysis degree reduced the emulsifying stability and oil-binding capacity. The produced protein hydrolysates showed potential as anti-cancer peptides on human ovarian cancer cell lines.
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Affiliation(s)
- Warin Siriwat
- Faculty of Agro-Industry, Chiang Mai University, Chiang Mai 50100, Thailand; (W.S.); (K.U.); (T.L.); (W.K.); (P.T.)
| | - Sunisa Ungwiwatkul
- Chemical Industrial Process and Environment Program, Faculty of Science, Energy and Environment, King Mongkut’s University of Technology North Bangkok (Rayong Campus), Rayong 21120, Thailand;
| | - Kridsada Unban
- Faculty of Agro-Industry, Chiang Mai University, Chiang Mai 50100, Thailand; (W.S.); (K.U.); (T.L.); (W.K.); (P.T.)
| | - Thunnop Laokuldilok
- Faculty of Agro-Industry, Chiang Mai University, Chiang Mai 50100, Thailand; (W.S.); (K.U.); (T.L.); (W.K.); (P.T.)
| | - Warinporn Klunklin
- Faculty of Agro-Industry, Chiang Mai University, Chiang Mai 50100, Thailand; (W.S.); (K.U.); (T.L.); (W.K.); (P.T.)
- Center of Excellence in Agro Bio-Circular-Green Industry (Agro BCG), Faculty of Agro-Industry, Chiang Mai University, Chiang Mai 50100, Thailand
| | - Pipat Tangjaidee
- Faculty of Agro-Industry, Chiang Mai University, Chiang Mai 50100, Thailand; (W.S.); (K.U.); (T.L.); (W.K.); (P.T.)
- Center of Excellence in Agro Bio-Circular-Green Industry (Agro BCG), Faculty of Agro-Industry, Chiang Mai University, Chiang Mai 50100, Thailand
| | - Saranyapin Potikanond
- Department of Pharmacology, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand;
| | - Lovedeep Kaur
- School of Food and Advanced Technology, Massey University, Palmerston North 4442, New Zealand;
| | - Suphat Phongthai
- Faculty of Agro-Industry, Chiang Mai University, Chiang Mai 50100, Thailand; (W.S.); (K.U.); (T.L.); (W.K.); (P.T.)
- Center of Excellence in Agro Bio-Circular-Green Industry (Agro BCG), Faculty of Agro-Industry, Chiang Mai University, Chiang Mai 50100, Thailand
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Nath PC, Ojha A, Debnath S, Sharma M, Nayak PK, Sridhar K, Inbaraj BS. Valorization of Food Waste as Animal Feed: A Step towards Sustainable Food Waste Management and Circular Bioeconomy. Animals (Basel) 2023; 13:ani13081366. [PMID: 37106930 PMCID: PMC10134991 DOI: 10.3390/ani13081366] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 04/05/2023] [Accepted: 04/14/2023] [Indexed: 04/29/2023] Open
Abstract
The growing population and healthy food demands have led to a rise in food waste generation, causing severe environmental and economic impacts. However, food waste (FW) can be converted into sustainable animal feed, reducing waste disposal and providing an alternative protein source for animals. The utilization of FW as animal feed presents a solution that not only tackles challenges pertaining to FW management and food security but also lessens the demand for the development of traditional feed, which is an endeavour that is both resource and environmentally intensive in nature. Moreover, this approach can also contribute to the circular economy by creating a closed-loop system that reduces the use of natural resources and minimizes environmental pollution. Therefore, this review discusses the characteristics and types of FW, as well as advanced treatment methods that can be used to recycle FW into high-quality animal feed and its limitations, as well as the benefits and drawbacks of using FW as animal feed. Finally, the review concludes that utilization of FW as animal feed can provide a sustainable solution for FW management, food security, preserving resources, reducing environmental impacts, and contributing to the circular bioeconomy.
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Affiliation(s)
- Pinku Chandra Nath
- Department of Bio Engineering, National Institute of Technology Agartala, Jirania 799046, India
| | - Amiya Ojha
- Department of Bio Engineering, National Institute of Technology Agartala, Jirania 799046, India
| | - Shubhankar Debnath
- Department of Bio Engineering, National Institute of Technology Agartala, Jirania 799046, India
| | - Minaxi Sharma
- Department of Applied Biology, University of Science and Technology Meghalaya, Baridua 793101, India
| | - Prakash Kumar Nayak
- Department of Food Engineering and Technology, Central Institute of Technology Kokrajhar, Kokrajhar 783370, India
| | - Kandi Sridhar
- Department of Food Technology, Karpagam Academy of Higher Education (Deemed to Be University), Coimbatore 641021, India
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