1
|
Quinger F, Kern J, Bosse A, Seifert J, Rodehutscord M, Siegert W. Effects of carriers for oils in compound feeds on growth performance, nutrient digestibility, and gut microbiota in broiler chickens. Poult Sci 2024; 103:103803. [PMID: 38781767 PMCID: PMC11145542 DOI: 10.1016/j.psj.2024.103803] [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: 02/19/2024] [Revised: 04/17/2024] [Accepted: 04/23/2024] [Indexed: 05/25/2024] Open
Abstract
Carrier materials for oils in compound feeds may be used in animal nutrition to supply liquid feed additives. However, implications of such carriers for the digestibility of the contained oil are unknown. This study investigated the potential of oil carriers in compound feed and their effect on performance, metabolizable energy, fatty acid (FA) retention, amino acid (AA) digestibility, and gut microbiota in broiler chickens. Six experimental diets were formulated following a 2 × 3 factorial arrangement with 20 g/kg or 40 g/kg of rapeseed oil supplied with no carrier or bound in a silica-based (SC) or lignocellulose-based (LC) carrier in a 1:1 mass ratio. The diets were assigned to 48 metabolism units with 15 animals each based on a randomized complete block design and fed from d 18 to 28 of the trial. Total excreta were collected from d 24 to 27 and used to determine total tract retention (TTR) of FA and MEn. On d 28, AA digestibility both by the distal half of the jejunum and the distal half of the ileum was determined, and microbiota of ileal and cecal digesta was analyzed using 16S ribosomal RNA sequencing. There were significant interactions for ADG, ADFI, the gain:feed ratio (G:F), MEn, and the TTR of crude fat and most fatty acids (P ≤ 0.046) except for C18, C18:2, and C22:0. Addition of SC decreased ADG, ADFI, and G:F (P < 0.001), while LC at 40 g/kg oil inclusion increased G:F and MEn (P < 0.001) for both inclusion levels. The TTR of crude fat and the FA C18:1, C18:2, C18:3, and C22:0 was increased by the addition of SC (P ≤ 0.016), while LC increased the TTR of the FA C18:1 and C18:2 as well as the TTR of C18:3 at 20 g/kg oil inclusion (P ≤ 0.016). Adding SC and LC increased the digestibility of 7 and 2 AA by the distal half of the jejunum, respectively, and the digestibility of 8 and 13 AA by the distal half of the ileum, respectively (P ≤ 0.039). The β-diversity and abundance of some taxa were altered by addition of LC and SC in the ceca while no treatment effect on the ileal microbiota was found. The results give no indication of an incomplete release of the oil from the carriers because the TTR of most FA was increased upon addition of SC and LC. LC may be used to supply liposoluble feed additives without drawbacks for nutrient digestibility and growth while SC requires further examination.
Collapse
Affiliation(s)
- Florian Quinger
- Institute of Animal Science, University of Hohenheim, 70599 Stuttgart, Germany
| | - Julia Kern
- J. Rettenmaier & Söhne GmbH + Co KG, 73494 Rosenberg, Germany
| | - Astrid Bosse
- J. Rettenmaier & Söhne GmbH + Co KG, 73494 Rosenberg, Germany
| | - Jana Seifert
- Institute of Animal Science, University of Hohenheim, 70599 Stuttgart, Germany; Hohenheim Center for Livestock Microbiome Research (HoLMiR), University of Hohenheim, 70599 Stuttgart, Germany
| | - Markus Rodehutscord
- Institute of Animal Science, University of Hohenheim, 70599 Stuttgart, Germany; Hohenheim Center for Livestock Microbiome Research (HoLMiR), University of Hohenheim, 70599 Stuttgart, Germany
| | - Wolfgang Siegert
- Department of Animal Sciences, University of Göttingen, 37077 Göttingen, Germany.
| |
Collapse
|
2
|
Castaños CE, Boyce MC, Bates T, Millar AH, Flematti G, Lawler NG, Grassl J. Lipidomic features of honey bee and colony health during limited supplementary feeding. INSECT MOLECULAR BIOLOGY 2023; 32:658-675. [PMID: 37477164 DOI: 10.1111/imb.12864] [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: 01/27/2023] [Accepted: 06/20/2023] [Indexed: 07/22/2023]
Abstract
Honey bee nutritional health depends on nectar and pollen, which provide the main source of carbohydrates, proteins and lipids to individual bees. During malnutrition, insect metabolism accesses fat body reserves. However, this process in bees and its repercussions at the colony level are poorly understood. Using untargeted lipidomics and gene expression analysis, we examined the effects of different feeding treatments (starvation, sugar feeding and sugar + pollen feeding) on bees and correlated them with colony health indicators. We found that nutritional stress led to an increase in unsaturated triacylglycerols and diacylglycerols, as well as a decrease in free fatty acids in the bee fat body. Here, we hypothesise that stored lipids are made available through a process where unsaturations change lipid's structure. Increased gene expression of three lipid desaturases in response to malnutrition supports this hypothesis, as these desaturases may be involved in releasing fatty acyl chains for lipolysis. Although nutritional stress was evident in starving and sugar-fed bees at the colony and physiological level, only starved colonies presented long-term effects in honey production.
Collapse
Affiliation(s)
- Clara E Castaños
- Cooperative Research Centre (CRC) for Honey Bee Products, Perth, Western Australia, Australia
- Honey Bee Health Research Group, School of Molecular Sciences, The University of Western Australia, Crawley, Western Australia, Australia
| | - Mary C Boyce
- School of Science, Edith Cowan University, Joondalup, Western Australia, Australia
| | - Tiffane Bates
- Cooperative Research Centre (CRC) for Honey Bee Products, Perth, Western Australia, Australia
- Honey Bee Health Research Group, School of Molecular Sciences, The University of Western Australia, Crawley, Western Australia, Australia
| | - A Harvey Millar
- ARC Centre of Excellence in Plant Energy Biology, School of Molecular Sciences, The University of Western Australia, Crawley, Western Australia, Australia
| | - Gavin Flematti
- School of Molecular Sciences, The University of Western Australia, Crawley, Western Australia, Australia
| | - Nathan G Lawler
- School of Science, Edith Cowan University, Joondalup, Western Australia, Australia
| | - Julia Grassl
- Cooperative Research Centre (CRC) for Honey Bee Products, Perth, Western Australia, Australia
- Honey Bee Health Research Group, School of Molecular Sciences, The University of Western Australia, Crawley, Western Australia, Australia
| |
Collapse
|
3
|
Hong J, Ndou SP, Adams S, Scaria J, Woyengo TA. Growth performance, visceral organ weights, and gut health of weaned pigs fed diets with different dietary fiber solubility and lipid sources. J Anim Sci 2021; 99:6398708. [PMID: 34657148 DOI: 10.1093/jas/skab292] [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: 07/27/2021] [Accepted: 10/14/2021] [Indexed: 12/24/2022] Open
Abstract
The objective of this study was to determine the interactive effects of dietary fiber solubility and lipid source on growth performance, visceral organ weights, gut histology, and gut microbiota composition of weaned pigs. A total of 280 nursery pigs [initial body weight (BW) = 6.84 kg] weaned at 21 d were housed in 40 pens (7 pigs/pen). The pigs were fed four diets (10 pens/diet) in a randomized complete block design in two phases: Phase 1 from 0 to 2 wk and Phase 2 from 2 to 5 wk. The diets were corn-soybean meal-based with either sugar beet pulp (SBP) or soybean hulls (SBH) as a fiber source and either soybean oil (SBO) or choice white grease (CWG) as a lipid source in a 2 × 2 factorial arrangement. The BW and feed intake were determined by phase, whereas visceral organ weights, intestinal histology, and gut microbial composition were determined at the end of the trial. Dietary fiber solubility and lipid source did not interact (P > 0.05) on average daily feed intake and average daily gain across all phases. However, the gain to feed ratio (G:F) for CWG-containing diets was lower (P < 0.05) than that for SBO-containing diets for Phase 1. Also, G:F for SBP-containing diets was lower (P < 0.05) than that for SBH-containing diets for Phase 1 and for the entire study period. Pigs fed SBP-containing diets had greater (P < 0.05) stomach weight, and tended to have greater (P < 0.10) small and large intestine weights relative to BW than those fed SBH-containing diets. Duodenal villous height to crypt depth ratio for CWG-based diets tended to be greater (P = 0.09) than that for SBO-based diets. Fiber solubility and lipid source interacted (P < 0.05) on relative abundance of Bacteroides in the colon such that the relative abundance of the Bacteroides for CWG was greater (P < 0.05) than that for the SBO in SBP-based diet, but not in SBH-based diet. Relative abundance of Butyricicoccus in the colon for SBH-based diet was greater (P < 0.05) than that for SBP-based diet. In conclusion, inclusion of SBH instead of SBP in corn-soybean meal-based diets for weaned pigs can result in increased feed efficiency and relative abundance of Butyricicoccus in the colon, which is associated with improved gut health. Also, inclusion of SBO instead of CWG in the diets for weaned pigs can result in improved feed efficiency during Phase 1 feeding; however, the pigs may recover from the low feed efficiency induced by dietary inclusion of CWG instead of SBO after Phase 1 feeding.
Collapse
Affiliation(s)
- Jinsu Hong
- Department of Animal Science, South Dakota State University, Brookings, SD 57007, USA
| | - Saymore Petros Ndou
- Department of Animal Science, South Dakota State University, Brookings, SD 57007, USA
| | - Seidu Adams
- Department of Veterinary and Biomedical Sciences, South Dakota State University, Brookings, SD 57007, USA
| | - Joy Scaria
- Department of Veterinary and Biomedical Sciences, South Dakota State University, Brookings, SD 57007, USA
| | - Tofuko Awori Woyengo
- Department of Animal Science, South Dakota State University, Brookings, SD 57007, USA.,Department of Animal Science, Aarhus University, Blichers Allé 20, DK-8830, Tjele, Denmark
| |
Collapse
|
4
|
Khatua B, El-Kurdi B, Patel K, Rood C, Noel P, Crowell M, Yaron JR, Kostenko S, Guerra A, Faigel DO, Lowe M, Singh VP. Adipose saturation reduces lipotoxic systemic inflammation and explains the obesity paradox. SCIENCE ADVANCES 2021; 7:7/5/eabd6449. [PMID: 33514548 PMCID: PMC7846167 DOI: 10.1126/sciadv.abd6449] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Accepted: 12/11/2020] [Indexed: 05/10/2023]
Abstract
Obesity sometimes seems protective in disease. This obesity paradox is predominantly described in reports from the Western Hemisphere during acute illnesses. Since adipose triglyceride composition corresponds to long-term dietary patterns, we performed a meta-analysis modeling the effect of obesity on severity of acute pancreatitis, in the context of dietary patterns of the countries from which the studies originated. Increased severity was noted in leaner populations with a higher proportion of unsaturated fat intake. In mice, greater hydrolysis of unsaturated visceral triglyceride caused worse organ failure during pancreatitis, even when the mice were leaner than those having saturated triglyceride. Saturation interfered with triglyceride's interaction and lipolysis by pancreatic triglyceride lipase, which mediates organ failure. Unsaturation increased fatty acid monomers in vivo and aqueous media, resulting in greater lipotoxic cellular responses and organ failure. Therefore, visceral triglyceride saturation reduces the ensuing lipotoxicity despite higher adiposity, thus explaining the obesity paradox.
Collapse
Affiliation(s)
| | - Bara El-Kurdi
- Department of Medicine, Mayo Clinic, Scottsdale, AZ, USA
| | - Krutika Patel
- Department of Medicine, Mayo Clinic, Scottsdale, AZ, USA
| | | | - Pawan Noel
- Department of Medicine, Mayo Clinic, Scottsdale, AZ, USA
| | | | - Jordan R Yaron
- Department of Medicine, Mayo Clinic, Scottsdale, AZ, USA
| | | | - Andre Guerra
- Department of Medicine, Mayo Clinic, Scottsdale, AZ, USA
| | | | - Mark Lowe
- Department of Pediatrics, Washington University School of Medicine, Saint Louis, MO, USA
| | - Vijay P Singh
- Department of Medicine, Mayo Clinic, Scottsdale, AZ, USA.
| |
Collapse
|
5
|
Rodriguez-Sanchez R, Tres A, Sala R, Garcés-Narro C, Guardiola F, Gasa J, Barroeta AC. Effects of dietary free fatty-acid content and saturation degree on lipid-class composition and fatty-acid digestibility along the gastrointestinal tract in broiler starter chickens. Poult Sci 2019; 98:4929-4941. [PMID: 31111950 DOI: 10.3382/ps/pez253] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2018] [Accepted: 04/13/2019] [Indexed: 11/20/2022] Open
Abstract
The aim of the present study is to assess the effect of the dietary free fatty acid (FFA) content and dietary fat saturation degree on the fatty-acid (FA) digestibility and lipid-class content along the gastrointestinal tract and excreta in broiler chickens. The 8 experimental diets resulted from replacing crude soybean oil with soybean acid oil from chemical refining, or crude palm oil with palm FA distillate from physical refining. Thus, there were 4 soybean and 4 palm diets with 6% added fat varying in their FFA% (5, 15, 35, and 50%). Samples of digestive content (gizzard, duodenum, jejunum, and ileum) and excreta were collected at 14 D for the determination of the FA digestibility and lipid-class content. The total FA digestibility coefficients reported for the chickens fed S diets in the jejunum, ileum, and excreta were higher than for those fed P diets (P ≤ 0.02). The general greater digestibility of the unsaturated diets was mainly explained by a higher contribution of the ileum to the absorption of saturated FA. The dietary FFA content mainly affected the FA absorption process. The diets with 50% FFA presented lower saturated FA digestibility coefficients in the jejunum and ileum (P ≤ 0.03), and higher content of FFA in the ileum and excreta (P ≤ 0.014), in comparison to the diets with 5% FFA. The 15% FFA diets were not different from the 5% FFA diets, regarding the saturated FA digestibility in the jejunum and excreta, and the FFA content in the ileum and excreta. It was concluded that unsaturated diets with moderate content of dietary FFA (up to 15%) could be used in broiler-chicken starter diets, as they led to similar FA absorption and performance results to the diets with the lowest dietary FFA content. From the present study, it has also been concluded that dietary saturated FA content has a greater impact on FA absorption than the dietary FFA content has.
Collapse
Affiliation(s)
- R Rodriguez-Sanchez
- Animal Nutrition and Welfare Service, Department of Animal and Food Science, Facultat de Veterinària, Universitat Autònoma de Barcelona, E-08193 Bellaterra, Barcelona, Spain
| | - A Tres
- Nutrition, Food Science and Gastronomy Department - XaRTA-INSA, Facultat de Farmàcia i Ciències de l'Alimentació, Universitat de Barcelona, E-08028 Barcelona, Spain
| | - R Sala
- Animal Nutrition and Welfare Service, Department of Animal and Food Science, Facultat de Veterinària, Universitat Autònoma de Barcelona, E-08193 Bellaterra, Barcelona, Spain
| | - C Garcés-Narro
- Department of Animal Production and Health. Facultad de Veterinaria, Universidad CEU Cardenal Herrera- CEU Universities, E-46115 Alfara de Patriarca, Valencia, Spain
| | - F Guardiola
- Nutrition, Food Science and Gastronomy Department - XaRTA-INSA, Facultat de Farmàcia i Ciències de l'Alimentació, Universitat de Barcelona, E-08028 Barcelona, Spain
| | - J Gasa
- Animal Nutrition and Welfare Service, Department of Animal and Food Science, Facultat de Veterinària, Universitat Autònoma de Barcelona, E-08193 Bellaterra, Barcelona, Spain
| | - A C Barroeta
- Animal Nutrition and Welfare Service, Department of Animal and Food Science, Facultat de Veterinària, Universitat Autònoma de Barcelona, E-08193 Bellaterra, Barcelona, Spain
| |
Collapse
|
6
|
Rodriguez-Sanchez R, Tres A, Sala R, Guardiola F, Barroeta AC. Evolution of lipid classes and fatty acid digestibility along the gastrointestinal tract of broiler chickens fed different fat sources at different ages. Poult Sci 2019; 98:1341-1353. [DOI: 10.3382/ps/pey458] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Accepted: 09/06/2018] [Indexed: 11/20/2022] Open
|
7
|
Moya-Ramírez I, Fernández-Arteaga A, Jurado-Alameda E, García-Román M. Waste Frying Oils as Substrate for Enzymatic Lipolysis: Optimization of Reaction Conditions in O/W Emulsion. J AM OIL CHEM SOC 2016. [DOI: 10.1007/s11746-016-2900-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
8
|
Ravindran V, Tancharoenrat P, Zaefarian F, Ravindran G. Fats in poultry nutrition: Digestive physiology and factors influencing their utilisation. Anim Feed Sci Technol 2016. [DOI: 10.1016/j.anifeedsci.2016.01.012] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
9
|
Tancharoenrat P, Ravindran V, Zaefarian F, Ravindran G. Digestion of fat and fatty acids along the gastrointestinal tract of broiler chickens. Poult Sci 2014; 93:371-9. [PMID: 24570459 DOI: 10.3382/ps.2013-03344] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Two experiments were conducted. The first experiment investigated the digestion of fat and fatty acids (FA) from soybean oil and tallow along the gastrointestinal tract of broiler chickens. The second experiment was conducted to determine endogenous fat and FA losses and the FA profile of chicken bile. In experiment 1, 2-wk-old broilers were fed corn-soy diets supplemented with 50 g/kg of soybean oil or tallow for 7 d and digesta were collected from the duodenum, upper jejunum, upper ileum, and lower ileum. Apparent digestibility coefficients were calculated using the titanium marker ratio in diets, and digesta. Digestibility of fat was determined to be negative in the duodenum, indicating marked net secretion of fat into this segment. Fat was rapidly digested in the jejunum, with digestibility coefficients of 0.60 to 0.64 being determined at the end of the jejunum. The digestion of fat continued in the upper ileum. The apparent digestibility coefficient of fat determined at lower ileum in soybean oil diets was higher (P < 0.05) than that in tallow diets (0.82 vs. 0.74). Linoleic acid was digested throughout the intestinal tract, whereas the digestion of palmitic, stearic, and oleic acids started only in the jejunum. Measurements at the lower ileal level showed that the unsaturated FA (linoleic and oleic acids) were well digested (0.90 to 0.94), irrespective of the source of fat. In contrast, the digestibility of saturated FA (palmitic and stearic acids) was influenced (P < 0.05) by the fat source. Digestibility coefficients of palmitic and stearic acids at lower ileum were markedly higher (P < 0.05) in the diet containing soybean oil (0.77 to 0.85) compared with that containing tallow (0.58 to 0.68). In experiment 2, ileal endogenous fat loss was determined to be 1,714 mg/kg of DM intake. Endogenous fat was composed mainly of palmitic (75 g/kg), stearic (131 g/kg), oleic (73 g/kg), linoleic (133 g/kg), and arachidonic (60 g/kg) acids. Fatty acid profile of endogenous fat was found to be remarkably similar to that of the bile, suggesting that the reabsorption of fat and FA from the bile was incomplete in growing broiler chickens.
Collapse
Affiliation(s)
- P Tancharoenrat
- Institute of Veterinary, Animal and Biomedical Sciences, Massey University, Palmerston North 4442, New Zealand
| | | | | | | |
Collapse
|
10
|
Tancharoenrat P, Ravindran V, Zaefarian F, Ravindran G. Influence of age on the apparent metabolisable energy and total tract apparent fat digestibility of different fat sources for broiler chickens. Anim Feed Sci Technol 2013. [DOI: 10.1016/j.anifeedsci.2013.10.013] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
11
|
Goswami D, Basu JK, De S. Erucic acid production using porcine pancreas lipase: Enhancement by mixed surfactants. BIOTECHNOL BIOPROC E 2011. [DOI: 10.1007/s12257-010-0193-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
12
|
Colin DY, Deprez-Beauclair P, Allouche M, Brasseur R, Kerfelec B. Exploring the active site cavity of human pancreatic lipase. Biochem Biophys Res Commun 2008; 370:394-8. [DOI: 10.1016/j.bbrc.2008.03.043] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2008] [Accepted: 03/11/2008] [Indexed: 11/26/2022]
|
13
|
Abstract
PURPOSE OF REVIEW The review evaluates current knowledge of the different lipases catalyzing triglyceride lipolysis in the human digestive tract, focusing on their mode of action - information useful for developing strategies to regulate the bioavailability of fatty acid. RECENT FINDINGS Optimal levels of digestive lipases promote efficient triglyceride lipolysis in healthy humans. Management of fatty acid bioavailability during pancreatic insufficiencies, however, requires enzyme replacement therapy. Such therapy entails gastro-protected porcine pancreatic powder, associated with antacid treatment when duodenal pH is too acidic; recently, enteric-coated high-buffered pancrelipase or recombinant gastric lipase have been used. Another promising strategy is to focus on lipid substrate to optimize lipid-water interface properties. Research on obesity treatment focuses on inhibitors. Orlistat is the first inhibitor to be used extensively. Others treatments are in development, including human pancreatic lipase C-terminal, polyphenols, specific proteins and peptides; however, their relevance has not yet been tested in humans. SUMMARY A better knowledge of lipase structure and mode of action will help the development of new natural inhibitors with fewer secondary effects. More intensive research in protein engineering for recombinant lipase production and in clinical nutrition, together with careful evaluation of patients' individual needs is necessary.
Collapse
Affiliation(s)
- Martine Armand
- INSERM, U476 'Nutrition Humaine et Lipides', INRA, UMR1260, Université Méditerranée Aix-Marseille 2, Faculté de Médecine, IPHM-IFR 125, Marseille, France.
| |
Collapse
|
14
|
Ciuffreda P, Loseto A, Manzocchi A, Santaniello E. Lipolytic activity of porcine pancreas lipase on fatty acid esters of dialkylglycerols: a structural basis for the design of new substrates for the assay of pancreatic lipases activity. Chem Phys Lipids 2001; 111:105-10. [PMID: 11457440 DOI: 10.1016/s0009-3084(01)00143-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
For the design of new synthetic substrates for the assay of pancreatic lipases activity, acyl dialkylglycerols of variable chain length were prepared. Titrimetric assay of these substrates showed the highest lipolytic activity of porcine pancreas lipase (pPL) with butanoyl dibutylglycerol. The activity is lower but comparable to that shown by pPL towards the classical substrate tributyrin. The 4-nitrophenylcarbonate of 1,2-di-O-butylglycerol, has been prepared and proposed as synthetic substrate for a new spectrophotometric assay of pancreatic lipases.
Collapse
Affiliation(s)
- P Ciuffreda
- Dipartimento di Scenze Precliniche LITA Vialba-Via G.B. Grassi, 74-20157, Milan, Italy
| | | | | | | |
Collapse
|
15
|
Effect of cyclic fatty acid monomers on fat absorption and transport depends on their positioning within the ingested triacylglycerols. J Lipid Res 1997. [DOI: 10.1016/s0022-2275(20)37185-6] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
|
16
|
Zandonella G, Haalck L, Spener F, Faber K, Paltauf F, Hermetter A. Inversion of Lipase Stereospecificity for Fluorogenic Alkyldiacyl Glycerols. Effect of Substrate Solubilization. ACTA ACUST UNITED AC 1995. [DOI: 10.1111/j.1432-1033.1995.0050f.x] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|