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Alves de Souza SM, de Araújo TS, Ferretti GDDS, Kalume DE, Cordeiro Y, Almeida MDS, de Souza TLF. Novel Method for the Production, Purification, and Characterization of Recombinant Lunasin: Identification of Disulfide Cross-Linked Dimers. Int J Pept Res Ther 2022. [DOI: 10.1007/s10989-022-10466-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Aqueous and Enzymatic Extraction of Oil and Protein from Almond Cake: A Comparative Study. Processes (Basel) 2019. [DOI: 10.3390/pr7070472] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The almond cake is a protein- and oil-rich by-product of the mechanical expression of almond oil that has the potential to be used as a source of valuable proteins and lipids for food applications. The objectives of this study were to evaluate the individual and combined effects of solids-to-liquid ratio (SLR), reaction time, and enzyme use on oil and protein extraction yields from almond cake. A central composite rotatable design was employed to maximize the overall extractability and distribution of extracted components among the fractions generated by the aqueous (AEP) and enzyme-assisted aqueous extraction process (EAEP). Simultaneous extraction of oil and protein by the AEP was favored by the use of low SLR (1:12.82) and longer reaction times (2 h), where extraction yields of 48.2% and 70% were achieved, respectively. Increased use of enzyme (0.85%) in the EAEP resulted in higher oil (50%) and protein (75%) extraction yields in a shorter reaction time (1 h), compared with the AEP at the same reaction time (41.6% oil and 70% protein extraction). Overall, extraction conditions that favored oil and protein extraction also favored oil yield in the cream and protein yield in the skim. However, increased oil yield in the skim was observed at conditions where higher oil extraction was achieved. In addition to improving oil and protein extractability, the use of enzyme during the extraction resulted in the production of skim fractions with smaller and more soluble peptides at low pH (5.0), highlighting possible uses of the EAEP skim in food applications involving acidic pH. The implications of the use of enzyme during the extraction regarding the de-emulsification of the EAEP cream warrant further investigation.
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Muceniece R, Namniece J, Nakurte I, Jekabsons K, Riekstina U, Jansone B. Pharmacological research on natural substances in Latvia: Focus on lunasin, betulin, polyprenol and phlorizin. Pharmacol Res 2016; 113:760-770. [PMID: 27109319 DOI: 10.1016/j.phrs.2016.03.040] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2016] [Revised: 03/22/2016] [Accepted: 03/22/2016] [Indexed: 01/08/2023]
Abstract
In this concise review the current research in plant bioactive compound studies in Latvia is described. The paper summarizes recent studies on substances from edible plants (e.g., cereals and apples) or their synthetic analogues, such as peptide lunasin, as well as substances isolated from inedible plants (e.g., birch and conifer), such as pentacyclic triterpenes (e.g., betulin, betulinic acid, and lupeol) and polyprenols. Latvian researchers have been first to demonstrate the presence of lunasin in triticale and oats. Additionally, the impact of genotype on the levels of lunasin in cereals was shown. Pharmacological studies have revealed effects of lunasin and synthetic triterpenes on the central nervous system in rodents. We were first to show that synthetic lunasin causes a marked neuroleptic/cataleptic effect and that betulin antagonizes bicuculline-induced seizures (a GABA A receptor antagonist). Studies on the mechanisms of action showed that lunasin binds to dopamine D1 receptors and betulin binds to melanocortin and gamma-aminobutyric acid A receptors therefore we suggest that these receptors play an essential role in lunasin's and betulin's central effects. Recent studies on conifer polyprenols demonstrated the ability of polyprenols to prevent statin-induced muscle weakness in a rat model. Another study on plant compounds has demonstrated the anti-hyperglycemic activity of phlorizin-containing unripe apple pomace in healthy volunteers. In summary, research into plant-derived compounds in Latvia has been focused on fractionating, isolating and characterizing of lunasin, triterpenes, polyprenols and phlorizin using in vitro, and in vivo assays, and human observational studies.
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Affiliation(s)
- Ruta Muceniece
- Department of Pharmacy, Faculty of Medicine, University of Latvia, 19 Raina Blvd., Riga, LV1586, Latvia.
| | - Jana Namniece
- Department of Pharmacy, Faculty of Medicine, University of Latvia, 19 Raina Blvd., Riga, LV1586, Latvia
| | - Ilva Nakurte
- Department of Physical chemistry, Faculty of Chemistry, University of Latvia, 19 Raina Blvd., Riga, LV1586, Latvia
| | - Kaspars Jekabsons
- Department of Pharmacy, Faculty of Medicine, University of Latvia, 19 Raina Blvd., Riga, LV1586, Latvia
| | - Una Riekstina
- Department of Pharmacy, Faculty of Medicine, University of Latvia, 19 Raina Blvd., Riga, LV1586, Latvia
| | - Baiba Jansone
- Department of Pharmacology, Faculty of Medicine, University of Latvia, 19 Raina Blvd, Riga, LV1586, Latvia
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Katoch R, Singh SK, Thakur N, Dutt S, Yadav SK, Shukle R. Cloning, characterization, expression analysis and inhibition studies of a novel gene encoding Bowman–Birk type protease inhibitor from rice bean. Gene 2014; 546:342-51. [DOI: 10.1016/j.gene.2014.05.055] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2014] [Revised: 05/21/2014] [Accepted: 05/23/2014] [Indexed: 10/25/2022]
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de Almeida NM, de Moura Bell JMLN, Johnson LA. Properties of Soy Protein Produced by Countercurrent, Two-Stage, Enzyme-Assisted Aqueous Extraction. J AM OIL CHEM SOC 2014. [DOI: 10.1007/s11746-014-2436-z] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Moura Bell JMLN, Maurer D, Yao L, Wang T, Jung S, Johnson LA. Characteristics of Oil and Skim in Enzyme‐Assisted Aqueous Extraction of Soybeans. J AM OIL CHEM SOC 2013. [DOI: 10.1007/s11746-013-2248-6] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- J. M. L. N. Moura Bell
- Center for Crops Utilization ResearchIowa State University1041 Food Sciences BuildingAmesIA50011‐1061USA
| | - D. Maurer
- Department of Food Science and Human NutritionIowa State UniversityAmesIA50011‐1061USA
| | - L. Yao
- Department of Food Science and Human NutritionIowa State UniversityAmesIA50011‐1061USA
| | - T. Wang
- Center for Crops Utilization ResearchIowa State University1041 Food Sciences BuildingAmesIA50011‐1061USA
- Department of Food Science and Human NutritionIowa State UniversityAmesIA50011‐1061USA
| | - S. Jung
- Center for Crops Utilization ResearchIowa State University1041 Food Sciences BuildingAmesIA50011‐1061USA
- Department of Food Science and Human NutritionIowa State UniversityAmesIA50011‐1061USA
| | - L. A. Johnson
- Center for Crops Utilization ResearchIowa State University1041 Food Sciences BuildingAmesIA50011‐1061USA
- Department of Food Science and Human NutritionIowa State UniversityAmesIA50011‐1061USA
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Fields C, Mallee P, Muzard J, Lee GU. Isolation of Bowman-Birk-Inhibitor from soybean extracts using novel peptide probes and high gradient magnetic separation. Food Chem 2012; 134:1831-8. [PMID: 23442627 DOI: 10.1016/j.foodchem.2012.03.085] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2012] [Revised: 02/27/2012] [Accepted: 03/21/2012] [Indexed: 11/19/2022]
Abstract
Soybean proteins offer exceptional promise in the area of cancer prevention and treatment. Specifically, Bowman-Birk Inhibitor (BBI) has the ability to suppress carcinogenesis in vivo, which has been attributed to BBI's inhibition of serine protease (trypsin and chymotrypsin) activity. The lack of molecular probes for the isolation of this protein has made it difficult to work with, limiting its progress as a significant candidate in the treatment of cancer. This study has successfully identified a set of novel synthetic peptides targeting the BBI, and has demonstrated the ability to bind BBI in vitro. One of those probes has been covalently immobilised on superparamagnetic microbeads to allow the isolation of BBI from soy whey mixtures in a single step. Our ultimate goal is the use of the described synthetic probe to facilitate the isolation of this potentially therapeutic protein for low cost, scalable analysis and production of BBI.
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Affiliation(s)
- Conor Fields
- Nanomedicine Centre, School of Chemistry and Chemical Biology, University College Dublin, Belfield, Dublin 4, Ireland
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Nakurte I, Klavins K, Kirhnere I, Namniece J, Adlere L, Matvejevs J, Kronberga A, Kokare A, Strazdina V, Legzdina L, Muceniece R. Discovery of lunasin peptide in triticale (X Triticosecale Wittmack). J Cereal Sci 2012. [DOI: 10.1016/j.jcs.2012.04.004] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Muzard J, Fields C, O'Mahony JJ, Lee GU. Probing the soybean Bowman-Birk inhibitor using recombinant antibody fragments. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2012; 60:6164-72. [PMID: 22642722 DOI: 10.1021/jf3004724] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The nutritional and health benefits of soy protein have been extensively studied over recent decades. The Bowman-Birk inhibitor (BBI), derived from soybeans, is a double-headed inhibitor of chymotrypsin and trypsin with anticarcinogenic and anti-inflammatory properties, which have been demonstrated in vitro and in vivo. However, the lack of analytical and purification methodologies complicates its potential for further functional and clinical investigations. This paper reports the construction of anti-BBI antibody fragments based on the principle of protein design. Recombinant antibody (scFv and diabody) molecules targeting soybean BBI were produced and characterized in vitro (K(D)~1.10(-9) M), and the antibody-binding site (epitope) was identified as part of the trypsin-specific reactive loop. Finally, an extremely fast purification strategy for BBI from soybean extracts, based on superparamagnetic particles coated with antibody fragments, was developed. To the best of the authors' knowledge, this is the first report on the design and characterization of recombinant anti-BBI antibodies and their potential application in soybean processing.
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Affiliation(s)
- Julien Muzard
- Bionanosciences, UCD Centre for Nanomedicine, School of Chemistry and Chemical Biology, University College Dublin, Belfield, Dublin 4, Ireland.
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