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Asemoloye MD, Bello TS, Oladoye PO, Remilekun Gbadamosi M, Babarinde SO, Ebenezer Adebami G, Olowe OM, Temporiti MEE, Wanek W, Marchisio MA. Engineered yeasts and lignocellulosic biomaterials: shaping a new dimension for biorefinery and global bioeconomy. Bioengineered 2023; 14:2269328. [PMID: 37850721 PMCID: PMC10586088 DOI: 10.1080/21655979.2023.2269328] [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: 06/24/2023] [Accepted: 10/03/2023] [Indexed: 10/19/2023] Open
Abstract
The next milestone of synthetic biology research relies on the development of customized microbes for specific industrial purposes. Metabolic pathways of an organism, for example, depict its chemical repertoire and its genetic makeup. If genes controlling such pathways can be identified, scientists can decide to enhance or rewrite them for different purposes depending on the organism and the desired metabolites. The lignocellulosic biorefinery has achieved good progress over the past few years with potential impact on global bioeconomy. This principle aims to produce different bio-based products like biochemical(s) or biofuel(s) from plant biomass under microbial actions. Meanwhile, yeasts have proven very useful for different biotechnological applications. Hence, their potentials in genetic/metabolic engineering can be fully explored for lignocellulosic biorefineries. For instance, the secretion of enzymes above the natural limit (aided by genetic engineering) would speed-up the down-line processes in lignocellulosic biorefineries and the cost. Thus, the next milestone would greatly require the development of synthetic yeasts with much more efficient metabolic capacities to achieve basic requirements for particular biorefinery. This review gave comprehensive overview of lignocellulosic biomaterials and their importance in bioeconomy. Many researchers have demonstrated the engineering of several ligninolytic enzymes in heterologous yeast hosts. However, there are still many factors needing to be well understood like the secretion time, titter value, thermal stability, pH tolerance, and reactivity of the recombinant enzymes. Here, we give a detailed account of the potentials of engineered yeasts being discussed, as well as the constraints associated with their development and applications.
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Affiliation(s)
- Michael Dare Asemoloye
- School of Pharmaceutical Science and Technology, Tianjin University, Tianjin, Nankai District, China
- Department of Microbiology and Ecosystem Science, University of Vienna, Vienna, Austria
| | - Tunde Sheriffdeen Bello
- Department of Plant Biology, School of Life Sciences, Federal University of Technology Minna, Minna Niger State, Nigeria
| | | | | | - Segun Oladiran Babarinde
- Department of Plant, Food and Environmental Sciences, Faculty of Agriculture, Dalhousie University, Truro, Nova Scotia, Canada
| | | | - Olumayowa Mary Olowe
- Food Security and Safety Focus Area, Faculty of Natural and Agricultural Sciences, North-West University, Private Mail Bag, Mmabatho, South Africa
| | | | - Wolfgang Wanek
- Department of Microbiology and Ecosystem Science, University of Vienna, Vienna, Austria
| | - Mario Andrea Marchisio
- School of Pharmaceutical Science and Technology, Tianjin University, Tianjin, Nankai District, China
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Abid K, Jabri J, Yaich H, Malek A, Rekhis J, Kamoun M. Bioconversion of alperujo into an alternative feed for ruminants by pretreatment with live yeasts and/or exogenous fibrolytic enzymes. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:64747-64754. [PMID: 37071367 PMCID: PMC10112312 DOI: 10.1007/s11356-023-27056-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Accepted: 04/12/2023] [Indexed: 05/11/2023]
Abstract
Extraction of olive oil through a two-stage centrifugation process produces a large amount of phytotoxic waste known as alperujo. This research was performed to bioconvert alperujo into enriched ruminant feed by pretreatment with exogenous fibrolytic enzymes (EFE) or/and live yeasts (LY). These additives were used in a completely randomized design with 3 EFE doses (0, 4, and 8 µl/g dry matter) and 3 LY doses (0, 4, and 8 mg/g dry matter) in a 3 × 3 factorial arrangement. Fermented alperujo with both EFE doses converted some of their hemicellulose and cellulose to simple sugars and increased bacterial abundance in the rumen. As a result, it shortens the lag time of rumen fermentation, increases the rate and amount of rumen fermentation, and improves digestibility. This improvement provides additional energy that can be used by ruminants to produce milk and by rumen microbiota to produce short-chain fatty acids. Fermented alperujo with a high dose of LY decreased their antinutritional compounds and reduced their high content of lipid. In the rumen, this waste became rapidly fermentable, and rumen bacteria became more abundance. Fermented alperujo with a high dose of LY + EFE accelerated rumen fermentation and improved rumen digestibility, energy available for milk production, and short-chain fatty acids compared to the use of LY or EFE alone. This synergistic interaction between these two additives increased protozoa abundance in rumen and the ability of rumen microbiota to bioconvert ammonia-nitrogen to microbial protein. Ultimately, fermentation alperujo with EFE + LY is a good strategy with minimum investment for a social sustainable economy and environment.
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Affiliation(s)
- Khalil Abid
- Animal Nutrition Laboratory, National School of Veterinary Medicine Sidi Thabet, University of Manouba, 2020, Manouba, Tunisia.
| | - Jihene Jabri
- Animal Nutrition Laboratory, National School of Veterinary Medicine Sidi Thabet, University of Manouba, 2020, Manouba, Tunisia
| | - Hela Yaich
- Animal Nutrition Laboratory, National School of Veterinary Medicine Sidi Thabet, University of Manouba, 2020, Manouba, Tunisia
| | - Atef Malek
- Animal Nutrition Laboratory, National School of Veterinary Medicine Sidi Thabet, University of Manouba, 2020, Manouba, Tunisia
| | - Jamel Rekhis
- Animal Nutrition Laboratory, National School of Veterinary Medicine Sidi Thabet, University of Manouba, 2020, Manouba, Tunisia
| | - Mohamed Kamoun
- Animal Nutrition Laboratory, National School of Veterinary Medicine Sidi Thabet, University of Manouba, 2020, Manouba, Tunisia
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Kholif AE, Hamdon HA, Gouda GA, Kassab AY, Morsy TA, Patra AK. Feeding Date-Palm Leaves Ensiled with Fibrolytic Enzymes or Multi-Species Probiotics to Farafra Ewes: Intake, Digestibility, Ruminal Fermentation, Blood Chemistry, Milk Production and Milk Fatty Acid Profile. Animals (Basel) 2022; 12:ani12091107. [PMID: 35565534 PMCID: PMC9104845 DOI: 10.3390/ani12091107] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Revised: 04/22/2022] [Accepted: 04/24/2022] [Indexed: 02/04/2023] Open
Abstract
The present experiment evaluated the feeding of date palm leaves (DPL) ensiled with fibrolytic enzymes (ENZ) or multi-species probiotics (MSP) on nutrient utilization and lactational performance of ewes. Fifty multiparous lactating Farafra ewes were used in a completely randomized design for 90 d. The treatments consisted of the control diet with a concentrate feed mixture and date palm leaves (at 60:40, DM basis) ensiled without additive (control) or DPL ensiled with ENZ or MSP replacing control DPL at 50 or 100%. Both ENZ and MSP increased (p < 0.01) DPL and total intakes, digestibility of all nutrients, concentrations of ammonia, total volatile fatty acids, acetate and propionate in the rumen. Increased milk production, concentrations of fat, lactose and energy in milk, and feed efficiency were observed with MSP and ENZ compared to the control treatment. Moreover, ENZ and MSP increased (p < 0.05) the concentrations of total n3, n6 fatty acids, polyunsaturated fatty acids and conjugated linoleic acids and decreased (p < 0.001) the atherogenicity. The differences between ENZ and MSP and between the low and high replacement levels were minor for all measured parameters. Ensiling of DPL with MSP or fibrolytic enzymes is recommended to improve feed efficiency and improve lactational performance of ewes.
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Affiliation(s)
- Ahmed E. Kholif
- Dairy Science Department, National Research Centre, 33 Bohouth St. Dokki, Giza 12622, Egypt; (G.A.G.); (T.A.M.)
- Correspondence: or
| | - Hatem A. Hamdon
- Department of Animal Production, Faculty of Agriculture, New Valley University, El-Kharga 72511, Egypt; (H.A.H.); (A.Y.K.)
| | - Gouda A. Gouda
- Dairy Science Department, National Research Centre, 33 Bohouth St. Dokki, Giza 12622, Egypt; (G.A.G.); (T.A.M.)
| | - Ayman Y. Kassab
- Department of Animal Production, Faculty of Agriculture, New Valley University, El-Kharga 72511, Egypt; (H.A.H.); (A.Y.K.)
| | - Tarek A. Morsy
- Dairy Science Department, National Research Centre, 33 Bohouth St. Dokki, Giza 12622, Egypt; (G.A.G.); (T.A.M.)
| | - Amlan K. Patra
- Department of Animal Nutrition, West Bengal University of Animal and Fishery Sciences, 37 K.B. Sarani, Kolkata 700037, India;
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