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Osorio-Díaz P, Islas-Hernández JJ, Agama-Acevedo E, Rodríguez-Ambriz SL, Sánchez-Pardo ME, Bello-Pérez LA. Chemical, Starch Digestibility and Sensory Characteristics of Durum Wheat/Unripe Whole Banana Flour Blends for Spaghetti Formulation. ACTA ACUST UNITED AC 2014. [DOI: 10.4236/fns.2014.53033] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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del Pozo-Yauner L, Wall JS, González Andrade M, Sánchez-López R, Rodríguez-Ambriz SL, Pérez Carreón JI, Ochoa-Leyva A, Fernández-Velasco DA. The N-terminal strand modulates immunoglobulin light chain fibrillogenesis. Biochem Biophys Res Commun 2013; 443:495-9. [PMID: 24321098 DOI: 10.1016/j.bbrc.2013.11.123] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2013] [Accepted: 11/27/2013] [Indexed: 12/20/2022]
Abstract
It has been suggested that the N-terminal strand of the light chain variable domain (V(L)) protects the molecule from aggregation by hindering spurious intermolecular contacts. We evaluated the impact of mutations in the N-terminal strand on the thermodynamic stability and kinetic of fibrillogenesis of the V(L) protein 6aJL2. Mutations in this strand destabilized the protein in a position-dependent manner, accelerating the fibrillogenesis by shortening the lag time; an effect that correlated with the extent of destabilization. In contrast, the effect on the kinetics of fibril elongation, as assessed in seeding experiments was of different nature, as it was not directly dependant on the degree of destabilization. This finding suggests different factors drive the nucleation-dependent and elongation phases of light chain fibrillogenesis. Finally, taking advantage of the dependence of the Trp fluorescence upon environment, four single Trp substitutions were made in the N-terminal strand, and changes in solvent exposure during aggregation were evaluated by acrylamide-quenching. The results suggest that the N-terminal strand is buried in the fibrillar state of 6aJL2 protein. This finding suggest a possible explanation for the modulating effect exerted by the mutations in this strand on the aggregation behavior of 6aJL2 protein.
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Affiliation(s)
- Luis del Pozo-Yauner
- Instituto Nacional de Medicina Genómica, Periférico Sur No. 4809, Col. Arenal Tepepan, Delegación Tlalpan, México, D.F. C.P. 14610, Mexico.
| | - Jonathan S Wall
- Departments of Radiology and Medicine, The University of Tennessee Medical Center, 1924 Alcoa Highway, Knoxville, TN, USA
| | - Martín González Andrade
- Instituto Nacional de Medicina Genómica, Periférico Sur No. 4809, Col. Arenal Tepepan, Delegación Tlalpan, México, D.F. C.P. 14610, Mexico
| | - Rosana Sánchez-López
- Instituto de Biotecnología, Universidad Nacional Autónoma de México, Av. Universidad #2001, Col. Chamilpa Cuernavaca, Morelos C.P. 62210, Mexico
| | - Sandra L Rodríguez-Ambriz
- Centro de Desarrollo de Productos Bióticos, Instituto Politécnico Nacional, Calle CEPROBI No. 8, Col. San Isidro, Yautepec, Morelos C.P. 62731, Mexico
| | - Julio I Pérez Carreón
- Instituto Nacional de Medicina Genómica, Periférico Sur No. 4809, Col. Arenal Tepepan, Delegación Tlalpan, México, D.F. C.P. 14610, Mexico
| | - Adrián Ochoa-Leyva
- Unidad de Genómica de Poblaciones Aplicada a la Salud, Facultad de Química, UNAM-Instituto Nacional de Medicina Genómica (INMEGEN), Periférico Sur No. 4809, Col. Arenal Tepepan, Delegación Tlalpan México, D.F. C.P. 14610, Mexico
| | - D Alejandro Fernández-Velasco
- Laboratorio de Fisicoquímica e Ingeniería de Proteínas, Departamento de Bioquímica, Facultad de Medicina, Universidad Nacional Autónoma de México, Circuito Interior, Ciudad Universitaria, Av. Universidad 3000, México, D.F. C.P. 04510, Mexico
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Bello-Pérez LA, Sánchez-Rivera MM, Núñez-Santiago C, Rodríguez-Ambriz SL, Román-Gutierrez AD. Effect of the pearled in the isolation and the morphological, physicochemical and rheological characteristics of barley starch. Carbohydr Polym 2010. [DOI: 10.1016/j.carbpol.2010.01.056] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Utrilla-Coello RG, Agama-Acevedo E, Barba de la Rosa AP, Rodríguez-Ambriz SL, Bello-Pérez LA. Physicochemical and Enzyme Characterization of Small and Large Starch Granules Isolated from Two Maize Cultivars. Cereal Chem 2010. [DOI: 10.1094/cchem-87-1-0050] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Rubí G. Utrilla-Coello
- Centro de Desarrollo de Productos Bióticos del IPN. Km 8.5 carr. Yautepec-Jojutla, colonia San Isidro, apartado postal 24, 62731 Yautepec, Morelos, México
| | - Edith Agama-Acevedo
- Centro de Desarrollo de Productos Bióticos del IPN. Km 8.5 carr. Yautepec-Jojutla, colonia San Isidro, apartado postal 24, 62731 Yautepec, Morelos, México
- Corresponding author. E-mail:
| | - Ana Paulina Barba de la Rosa
- Instituto Potosino de Investigación Científica y Tecnológica. Camino de la Presa San José, Lomas 4a sección, Apartado Postal 78216, San Luis Potosí, México
| | - Sandra L. Rodríguez-Ambriz
- Centro de Desarrollo de Productos Bióticos del IPN. Km 8.5 carr. Yautepec-Jojutla, colonia San Isidro, apartado postal 24, 62731 Yautepec, Morelos, México
| | - Luis Arturo Bello-Pérez
- Centro de Desarrollo de Productos Bióticos del IPN. Km 8.5 carr. Yautepec-Jojutla, colonia San Isidro, apartado postal 24, 62731 Yautepec, Morelos, México
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Bello-Pérez LA, Rodríguez-Ambriz SL, Agama-Acevedo E, Sanchez-Rivera MM. Solubilization Effects on Molecular Weights of Amylose and Amylopectins of Normal Maize and Barley Starches. Cereal Chem 2009. [DOI: 10.1094/cchem-86-6-0701] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Luis Arturo Bello-Pérez
- Centro de Desarrollo de Productos Bióticos del IPN, Km. 8.5 Carr. Yautepec-Jojutla Col. San Isidro, C.P., 62731, Yautepec, Morelos, México
- Corresponding author. E-mail:
| | - Sandra L. Rodríguez-Ambriz
- Centro de Desarrollo de Productos Bióticos del IPN, Km. 8.5 Carr. Yautepec-Jojutla Col. San Isidro, C.P., 62731, Yautepec, Morelos, México
| | - Edith Agama-Acevedo
- Centro de Desarrollo de Productos Bióticos del IPN, Km. 8.5 Carr. Yautepec-Jojutla Col. San Isidro, C.P., 62731, Yautepec, Morelos, México
| | - Mirna M. Sanchez-Rivera
- Centro de Desarrollo de Productos Bióticos del IPN, Km. 8.5 Carr. Yautepec-Jojutla Col. San Isidro, C.P., 62731, Yautepec, Morelos, México
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Juarez-Garcia E, Agama-Acevedo E, Sáyago-Ayerdi SG, Rodríguez-Ambriz SL, Bello-Pérez LA. Composition, digestibility and application in breadmaking of banana flour. Plant Foods Hum Nutr 2006; 61:131-7. [PMID: 17048100 DOI: 10.1007/s11130-006-0020-x] [Citation(s) in RCA: 117] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Banana flour (BF) was obtained from unripe banana (Musa paradisiacal L.) and characterized in its chemical composition. Experimental bread was formulated with BF flour and the product was studied regarding chemical composition, available starch (AS), resistant starch (RS) and rate of starch digestion in vitro. The chemical composition of BF showed that total starch (73.36%) and dietary fiber (14.52%) were the highest constituents. Of the total starch, available starch was 56.29% and resistant starch 17.50%. BF bread had higher protein and total starch content than control bread, but the first had higher lipid amount. Appreciable differences were found in available, resistant starch and indigestible fraction between the bread studied, since BF bread showed higher resistant starch and indigestible fraction content. HI-based predicted glycemic index for the BF bread was 65.08%, which was significantly lower than control bread (81.88%), suggesting a "slow carbohydrate" feature for the BF-based goods. Results revealed BF as a potential ingredient for bakery products containing slowly digestible carbohydrates.
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Affiliation(s)
- E Juarez-Garcia
- Centro de Desarrollo de Productos Bióticos del IPN. Km 8.5 carr. Yautepec-Jojutla, colonia San Isidro, apartado postal 24 62731, Yautepec, Morelos, México
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Rodríguez-Ambriz SL, Martínez-Ayala AL, Millán F, Dávila-Ortíz G. Composition and functional properties of Lupinus campestris protein isolates. Plant Foods Hum Nutr 2005; 60:99-107. [PMID: 16187011 DOI: 10.1007/s11130-005-6835-z] [Citation(s) in RCA: 66] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Protein isolates from L. campestris and soybean seeds were prepared using isoelectric precipitation (PI) and micellization (MI) procedures. The amount of protein recovered was considerably higher with the isoelectric precipitation than with the micellization procedure (60% and 30%, respectively). Protein contents were higher than 90% in protein isolates. Antinutritional factors content (alkaloids, lectins, and tannins) were reduced to innocuous levels after protein isolate preparation. Minimum protein solubility for the precipitated lupin protein isolate (LPI) was at pH 4.0, and between pH 4 and 6 for the micellized lupin protein isolate (LMI), increasing at both extremes of the pH scale. Water absorption for the LMI was 1.3 ml/g of protein and its oil absorption 2.2 ml/g of protein. The LPI had 1.7 ml/g of protein in both water and oil absorption. Foaming capacity and stability was pH-dependent. Foaming capacity was higher at pH 2 and lower near the protein isoelectric points. Minimum protein concentration for gelation in LMI was 8% w/v at pH 4, while for LPI was 6% at pH 4 and 6. Amino acid composition in L. campestris flour and protein isolates was high in lysine and low in methionine. Most of the essential amino acids in lupin protein isolates were at acceptable levels compared to a reference pattern for infants and adults. The electrophoretic pattern of both protein isolates showed three bands with different mobilities, suggesting that the protein fractions belong to alpha-conglutin (11S-like protein), beta-conglutin (7S-like protein) and gamma-conglutin. It is proven that some of the functional properties of L. campestris protein isolates are similar to those soybean protein isolates recovered under equal conditions.
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Affiliation(s)
- S L Rodríguez-Ambriz
- Centro de Desarrollo de Productos Bióticos-IPN, Carretera Yautepec-Jojutla, Col. San Isidro, Yautepec, Morelos, México
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