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Article ; Online: l-Malate (-2) Protonation State is Required for Efficient Decarboxylation to l-Lactate by the Malolactic Enzyme of

Acevedo, Waldo / Cañón, Pablo / Gómez-Alvear, Felipe / Huerta, Jaime / Aguayo, Daniel / Agosin, Eduardo

2020 Volume 25, Issue 15

Abstract: Malolactic fermentation (MLF) is responsible for the decarboxylation of l-malic into lactic acid ...

Abstract	Malolactic fermentation (MLF) is responsible for the decarboxylation of l-malic into lactic acid in most red wines and some white wines. It reduces the acidity of wine, improves flavor complexity and microbiological stability. Despite its industrial interest, the MLF mechanism is not fully understood. The objective of this study was to provide new insights into the role of pH on the binding of malic acid to the malolactic enzyme (MLE) of
MeSH term(s)	Bacterial Proteins/chemistry ; Lactic Acid/chemistry ; Malate Dehydrogenase/chemistry ; Malates/chemistry ; Oenococcus/enzymology
Chemical Substances	Bacterial Proteins ; Malates ; Lactic Acid (33X04XA5AT) ; malic acid (817L1N4CKP) ; malolactic enzyme (EC 1.1.1.-) ; Malate Dehydrogenase (EC 1.1.1.37)
Language	English
Publishing date	2020-07-28
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	1413402-0
ISSN	1420-3049 ; 1431-5165 ; 1420-3049
ISSN (online)	1420-3049
ISSN	1431-5165 ; 1420-3049
DOI	10.3390/molecules25153431
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Article ; Online: l -Malate (−2) Protonation State is Required for Efficient Decarboxylation to l -Lactate by the Malolactic Enzyme of Oenococcus oeni

Waldo Acevedo / Pablo Cañón / Felipe Gómez-Alvear / Jaime Huerta / Daniel Aguayo / Eduardo Agosin

Molecules, Vol 25, Iss 3431, p

2020 Volume 3431

Abstract: Malolactic fermentation (MLF) is responsible for the decarboxylation of l -malic into lactic acid ... the MLE binding pocket and pose of l -malic acid (MAL) and its l -malate (−1) and (−2) protonation states ...

Abstract	Malolactic fermentation (MLF) is responsible for the decarboxylation of l -malic into lactic acid in most red wines and some white wines. It reduces the acidity of wine, improves flavor complexity and microbiological stability. Despite its industrial interest, the MLF mechanism is not fully understood. The objective of this study was to provide new insights into the role of pH on the binding of malic acid to the malolactic enzyme (MLE) of Oenococcus oeni. To this end, sequence similarity networks and phylogenetic analysis were used to generate an MLE homology model, which was further refined by molecular dynamics simulations. The resulting model, together with quantum polarized ligand docking (QPLD), was used to describe the MLE binding pocket and pose of l -malic acid (MAL) and its l -malate (−1) and (−2) protonation states (MAL − and MAL 2− , respectively). MAL 2− has the lowest ∆G binding , followed by MAL − and MAL, with values of −23.8, −19.6, and −14.6 kJ/mol, respectively, consistent with those obtained by isothermal calorimetry thermodynamic (ITC) assays. Furthermore, molecular dynamics and MM/GBSA results suggest that only MAL 2− displays an extended open conformation at the binding pocket, satisfying the geometrical requirements for Mn 2+ coordination, a critical component of MLE activity. These results are consistent with the intracellular pH conditions of O. oeni cells—ranging from pH 5.8 to 6.1—where the enzymatic decarboxylation of malate occurs.
Keywords	malolactic enzyme ; reaction mechanism ; docking ; molecular dynamics ; isothermal titration calorimetry ; Organic chemistry ; QD241-441
Subject code	333
Language	English
Publishing date	2020-07-01T00:00:00Z
Publisher	MDPI AG
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Leaf area and its impact in yield and quality of greenhouse tomato (Solanum lycopersicum L.)

Candido Mendoza Pérez / Carlos Ramirez Ayala / Antonio Martinez Ruiz / Waldo Ojeda Bustamante / Jesús del Rosario Ruelas Islas / Roberto Ascencio Hernández / Anselmo López Ordaz / Fidel Núñez Ramírez

Revista de la Facultad de Ciencias Agrarias, Vol 54, Iss 1, Pp 57-

2022 Volume 69

Abstract: This study aimed to estimate the tomato leaf area index (LAI) by comparing two methods (destructive and interception of photosynthetically active radiation) and the consequent relationship to fruit yield and quality. The experiment was carried out in a ... ...

Abstract	This study aimed to estimate the tomato leaf area index (LAI) by comparing two methods (destructive and interception of photosynthetically active radiation) and the consequent relationship to fruit yield and quality. The experiment was carried out in a greenhouse with tezontle (red volcanic scoria) as the substrate and a drip irrigation system. The experiment consisted of three treatments: T1, T2 and T3, with one, two and three stems per plant, respectively. The LAI was measured with a ceptometer that estimates the intercepted radiation above and below the canopy. Maximum LAI was found at 1413 cumulative growing degree days (CGDD). Those indexes were 3.69, 5.27 and 6.16 for T1, T2 and T3, respectively. Individual correlation models were fitted linearly between the two methods. The R2 values were 0.98, 0.99 and 0.99 with yields of 20, 18 and 17 kg m-2 for T1, T2 and T3, respectively. In addition, T1 produced better fruit size quality with approximately 69, 23 and 8% classified as first, second and third class, respectively. Only 1% was classified as a small fruit. Increasing the number of stems per plant increased the LAI and fruit number but decreased fruit size.
Keywords	solanum lycopersicum l ; ceptómetro ; radiación fotosintéticamente activa ; Agriculture ; S ; Food processing and manufacture ; TP368-456
Subject code	571
Language	English
Publishing date	2022-06-01T00:00:00Z
Publisher	Facultad de Ciencias Agrarias. Universidad Nacional de Cuyo
Document type	Article ; Online
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Book ; Online ; E-Book: Atrial fibrillation

Estes, Nathan A. Mark / Waldo, Albert L.

a multidisciplinary approach to improving patient outcomes

(The cardiovascular team approach series ; 4)

2015

Author's details	N.A. Mark Estes III, MD, FACC, FHRS, FAHA, FESC; Albert L. Waldo, MD, PhD (Hon), FACC, FHRS, FAHA, FACCP, volume editors
Series title	The cardiovascular team approach series ; 4
Collection
Keywords	Atrial Fibrillation / therapy ; Treatment Outcome
Language	English
Size	1 Online-Ressource (xxvii, 275 Seiten), Illustrationen
Publisher	Cardiotext Publishing
Publishing place	Minneapolis, Minnesota
Publishing country	United States
Document type	Book ; Online ; E-Book
Remark	Zugriff für angemeldete ZB MED-Nutzerinnen und -Nutzer
HBZ-ID	HT019161133
ISBN	978-1-935395-58-4 ; 9781935395959 ; 1-935395-58-0 ; 1935395955
Database	ZB MED Catalogue: Medicine, Health, Nutrition, Environment, Agriculture

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Article ; Online: Instant milk drink based on green plantain (Musa paradisiaca L.) and milk

Susana Waldo / Aníbal Quinteros / Enrique Terleira / Karen Documet / Julio Chumacero / Publio Castro

Agroindustrial Science, Vol 8, Iss 2, Pp 1003-

2018 Volume 109

Abstract: El plátano verde (Musa paradisiaca L.) es una fruta, que se cultiva en diversas regiones del Perú ... indicaron que para obtener la bebida instantánea liofilizadas se debe efectuar a una temperatura ...

Abstract	El plátano verde (Musa paradisiaca L.) es una fruta, que se cultiva en diversas regiones del Perú, representa una fuente de alimento diario delicioso, nutritivo y muy solicitado en las regiones de la selva. Por tal motivo, se propuso aumentar su vida útil y valor nutricional elaborando una bebida instantánea y enriquecida con azúcar y leche fresca. Se hicieron tres formulaciones: F1 (Pliof = 0,045 mbar, Tcong = -20°C y tliof = 20 h), F2 (Pliof = 0,120 mbar, Tcong = -25 °C y tliof = 10 h) y F3 (Pliof = 0,200 mbar, Tcong = -32 °C y tliof = 30 h) con 13,53%, 11,11% y 9,09% de materia prima respectivamente; se evaluó sus propiedades sensoriales y finalmente la composición fisicoquímica de la mejor formulación. Los resultados indicaron que para obtener la bebida instantánea liofilizadas se debe efectuar a una temperatura de congelación de -20 ºC, presión de liofilización de 0,045 mbar y tiempo de liofilización de 20 horas y con una formulación de 13,53% de plátano verde variedad inguiri, 54,66% de leche, 18,15% de azúcar y 13,66% de agua. La bebida instantánea liofilizada presenta un 3% de humedad, 4,71% de proteínas; 87,98% de carbohidratos; 0,29% de fibra; 2,39% de grasa y 1,3% de cenizas. En conclusión, la formulación permitió obtener un producto con propiedades químicas, físicas y sensoriales de buena calidad para el consumo humano.
Keywords	Musa paradisiaca L ; bebida instantánea ; harina liofilizada ; Agriculture (General) ; S1-972 ; Technology ; T ; Industrial engineering. Management engineering ; T55.4-60.8
Language	Spanish
Publishing date	2018-12-01T00:00:00Z
Publisher	Universidad Nacional de Trujillo
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Response of tomato (Solanum lycopersicum L.) to water consumption, leaf area and yield with respect to the number of stems in the greenhouse

Cándido Mendoza-Pérez / Carlos Ramírez-Ayala / Waldo Ojeda-Bustamante / Carlos Trejo / Anselmo López-Ordaz / Abel Quevedo-Nolasco / Antonio Martínez-Ruiz

Revista de la Facultad de Ciencias Agrarias, Vol 50, Iss

2018 Volume 2

Abstract: ... 30 L m-2 in the initial stage, up to 4.41, 4.77 and 6.0 L m-2, in the stage of maximum demand for T1 ... T2 and T3. The gross volume applied throughout the cycle was 352.2, 388.4 and 434.7 L m-2 for T1, T2 ...

Abstract	The objective of this study was to analyze tomato responses to water requirements (evaluated by means of balance lysimeters), leaf area, yield, quality and its relationship with weather, depending on the number of stems. The work was carried out in a greenhouse under hydroponic conditions. Tezontle (Stuff) was used as a substrate and a drip irrigation system was installed. The experiment consisted of three treatments, with one (T1), two (T2) and three (T3) stems per plant. The daily crop evapotranspiration was 0.30 L m-2 in the initial stage, up to 4.41, 4.77 and 6.0 L m-2, in the stage of maximum demand for T1, T2 and T3. The gross volume applied throughout the cycle was 352.2, 388.4 and 434.7 L m-2 for T1, T2 and T3, with productivities of 49, 41 and 36 kg m3 and yields of 20, 18 and 16 kg m-2 for T1, T2 and T3. Regarding quality parameters in size, T1 was the best, with 69, 23, 8 and 1% fruits of first, second, third and small fruits per plant respectively. The meteorological variables such as; temperature, wind, relative humidity, vapor pressure deficit and atmospheric water potential determined the consumption of water and nutrients in crops and are variables for irrigation scheduling.
Keywords	Solanum lycopersicum L ; balance lysimeter ; tezontle ; evapotranspiration ; fruit quality ; Agriculture ; S ; Food processing and manufacture ; TP368-456
Subject code	571
Language	English
Publishing date	2018-12-01T00:00:00Z
Publisher	Facultad de Ciencias Agrarias. Universidad Nacional de Cuyo
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Response of tomato (Solanum lycopersicum L.) to water consumption, leaf area and yield with respect to the number of stems in the greenhouse

Cándido Mendoza-Pérez / Carlos Ramírez-Ayala / Waldo Ojeda-Bustamante / Carlos Trejo / Anselmo López-Ordaz / Abel Quevedo-Nolasco / Antonio Martínez-Ruiz

Revista de la Facultad de Ciencias Agrarias, Vol 50, Iss

2018 Volume 2

Abstract	The objective of this study was to analyze tomato responses to water requirements (evaluated by means of balance lysimeters), leaf area, yield, quality and its relationship with weather, depending on the number of stems. The work was carried out in a greenhouse under hydroponic conditions. Tezontle (Stuff) was used as a substrate and a drip irrigation system was installed. The experiment consisted of three treatments, with one (T1), two (T2) and three (T3) stems per plant. The daily crop evapotranspiration was 0.30 L m-2 in the initial stage, up to 4.41, 4.77 and 6.0 L m-2, in the stage of maximum demand for T1, T2 and T3. The gross volume applied throughout the cycle was 352.2, 388.4 and 434.7 L m-2 for T1, T2 and T3, with productivities of 49, 41 and 36 kg m3 and yields of 20, 18 and 16 kg m-2 for T1, T2 and T3. Regarding quality parameters in size, T1 was the best, with 69, 23, 8 and 1% fruits of first, second, third and small fruits per plant respectively. The meteorological variables such as; temperature, wind, relative humidity, vapor pressure deficit and atmospheric water potential determined the consumption of water and nutrients in crops and are variables for irrigation scheduling.
Keywords	Solanum lycopersicum L ; balance lysimeter ; tezontle ; evapotranspiration ; fruit quality ; Agriculture ; S ; Food processing and manufacture ; TP368-456
Subject code	571
Language	English
Publishing date	2018-12-01T00:00:00Z
Publisher	Facultad de Ciencias Agrarias. Universidad Nacional de Cuyo
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Response of tomato (Solanum lycopersicum L.) to water consumption, leaf area and yield with respect to the number of stems in the greenhouse

Cándido Mendoza-Pérez / Carlos Ramírez-Ayala / Waldo Ojeda-Bustamante / Carlos Trejo / Anselmo López-Ordaz / Abel Quevedo-Nolasco / Antonio Martínez-Ruiz

Revista de la Facultad de Ciencias Agrarias, Vol 50, Iss

2018 Volume 2

Abstract	The objective of this study was to analyze tomato responses to water requirements (evaluated by means of balance lysimeters), leaf area, yield, quality and its relationship with weather, depending on the number of stems. The work was carried out in a greenhouse under hydroponic conditions. Tezontle (Stuff) was used as a substrate and a drip irrigation system was installed. The experiment consisted of three treatments, with one (T1), two (T2) and three (T3) stems per plant. The daily crop evapotranspiration was 0.30 L m-2 in the initial stage, up to 4.41, 4.77 and 6.0 L m-2, in the stage of maximum demand for T1, T2 and T3. The gross volume applied throughout the cycle was 352.2, 388.4 and 434.7 L m-2 for T1, T2 and T3, with productivities of 49, 41 and 36 kg m3 and yields of 20, 18 and 16 kg m-2 for T1, T2 and T3. Regarding quality parameters in size, T1 was the best, with 69, 23, 8 and 1% fruits of first, second, third and small fruits per plant respectively. The meteorological variables such as; temperature, wind, relative humidity, vapor pressure deficit and atmospheric water potential determined the consumption of water and nutrients in crops and are variables for irrigation scheduling.
Keywords	Solanum lycopersicum L ; balance lysimeter ; tezontle ; evapotranspiration ; fruit quality ; Agriculture ; S ; Food processing and manufacture ; TP368-456
Subject code	571
Language	English
Publishing date	2018-12-01T00:00:00Z
Publisher	Facultad de Ciencias Agrarias. Universidad Nacional de Cuyo
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Response of tomato (Solanum lycopersicum L.) to water consumption, leaf area and yield with respect to the number of stems in the greenhouse

CÃ¡ndido Mendoza-PÃ©rez / Carlos RamÃrez-Ayala / Waldo Ojeda-Bustamante / Carlos Trejo / Anselmo LÃ³pez-Ordaz / Abel Quevedo-Nolasco / Antonio MartÃnez-Ruiz

Revista de la Facultad de Ciencias Agrarias, Vol 50, Iss

2018 Volume 2

Abstract	The objective of this study was to analyze tomato responses to water requirements (evaluated by means of balance lysimeters), leaf area, yield, quality and its relationship with weather, depending on the number of stems. The work was carried out in a greenhouse under hydroponic conditions. Tezontle (Stuff) was used as a substrate and a drip irrigation system was installed. The experiment consisted of three treatments, with one (T1), two (T2) and three (T3) stems per plant. The daily crop evapotranspiration was 0.30 L m-2 in the initial stage, up to 4.41, 4.77 and 6.0 L m-2, in the stage of maximum demand for T1, T2 and T3. The gross volume applied throughout the cycle was 352.2, 388.4 and 434.7 L m-2 for T1, T2 and T3, with productivities of 49, 41 and 36 kg m3 and yields of 20, 18 and 16 kg m-2 for T1, T2 and T3. Regarding quality parameters in size, T1 was the best, with 69, 23, 8 and 1% fruits of first, second, third and small fruits per plant respectively. The meteorological variables such as; temperature, wind, relative humidity, vapor pressure deficit and atmospheric water potential determined the consumption of water and nutrients in crops and are variables for irrigation scheduling.
Keywords	Solanum lycopersicum L ; balance lysimeter ; tezontle ; evapotranspiration ; fruit quality ; Agriculture ; S ; Food processing and manufacture ; TP368-456
Subject code	571
Language	English
Publishing date	2018-12-01T00:00:00Z
Publisher	Facultad de Ciencias Agrarias. Universidad Nacional de Cuyo
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Response of tomato (Solanum lycopersicum L.) to water consumption, leaf area and yield with respect to the number of stems in the greenhouse

CÃ¡ndido Mendoza-PÃ©rez / Carlos RamÃrez-Ayala / Waldo Ojeda-Bustamante / Carlos Trejo / Anselmo LÃ³pez-Ordaz / Abel Quevedo-Nolasco / Antonio MartÃnez-Ruiz

Revista de la Facultad de Ciencias Agrarias, Vol 50, Iss

2018 Volume 2

Abstract	The objective of this study was to analyze tomato responses to water requirements (evaluated by means of balance lysimeters), leaf area, yield, quality and its relationship with weather, depending on the number of stems. The work was carried out in a greenhouse under hydroponic conditions. Tezontle (Stuff) was used as a substrate and a drip irrigation system was installed. The experiment consisted of three treatments, with one (T1), two (T2) and three (T3) stems per plant. The daily crop evapotranspiration was 0.30 L m-2 in the initial stage, up to 4.41, 4.77 and 6.0 L m-2, in the stage of maximum demand for T1, T2 and T3. The gross volume applied throughout the cycle was 352.2, 388.4 and 434.7 L m-2 for T1, T2 and T3, with productivities of 49, 41 and 36 kg m3 and yields of 20, 18 and 16 kg m-2 for T1, T2 and T3. Regarding quality parameters in size, T1 was the best, with 69, 23, 8 and 1% fruits of first, second, third and small fruits per plant respectively. The meteorological variables such as; temperature, wind, relative humidity, vapor pressure deficit and atmospheric water potential determined the consumption of water and nutrients in crops and are variables for irrigation scheduling.
Keywords	Solanum lycopersicum L ; balance lysimeter ; tezontle ; evapotranspiration ; fruit quality ; Agriculture ; S ; Food processing and manufacture ; TP368-456
Subject code	571
Language	English
Publishing date	2018-12-01T00:00:00Z
Publisher	Facultad de Ciencias Agrarias. Universidad Nacional de Cuyo
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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