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Article ; Online: Origin, structural characteristics, prevention measures, diagnosis and potential drugs to prevent and COVID-19

Medwave, Vol 20, Iss 08, Pp e8037-e

2020 Volume 8037

Abstract: El síndrome respiratorio agudo severo coronavirus 2 (SARS-CoV-2) es responsable de la enfermedad denominada COVID-19 (acrónimo del inglés Coronavirus Disease-2019). Esta enfermedad fue detectada inicialmente en la ciudad de Wuhan, China en diciembre de ... ...

Abstract	El síndrome respiratorio agudo severo coronavirus 2 (SARS-CoV-2) es responsable de la enfermedad denominada COVID-19 (acrónimo del inglés Coronavirus Disease-2019). Esta enfermedad fue detectada inicialmente en la ciudad de Wuhan, China en diciembre de 2019. Las personas contagiadas con COVID-19 presentan síntomas variados, dependiendo de su estado de salud y edad. Los síntomas más comunes son fiebre, tos, mialgia, fatiga, odinofagia y disnea. También se ha observado que en algunos pacientes, la infección es asintomática. Los adultos mayores de 60 años infectados son el grupo de pacientes más susceptibles a desarrollar estados severos de COVID-19 y se presenta comorbilidad en presencia de enfermedades crónicas. Por otra parte, también es importante disponer de pruebas que permitan detectar al SARS-COV-2 y seguir la evolución de COVID-19 de forma rápida, confiable y barata. Para lograr esto, existen pruebas de reacción en cadena de la polimerasa de transcripción inversa en tiempo real (RT-PCR), de amplificación isotérmica de ácido nucleico y de inmunoestimulación enzimática. Actualmente, no existen tratamientos para la prevención del contagio y combatir los efectos del virus en la salud humana. Sin embargo, en el mundo hay grupos de investigación que están realizando pruebas in vitro, in vivo e in silico para encontrar fármacos que sean capaces de prevenir y/o controlar la infección en humanos con SARS-CoV-2. La cloroquina, hidroxicloroquina, remdesivir, interferon-2b y oseltamivir son algunas de las opciones farmacológicas que están siendo evaluadas en pruebas clínicas para la profilaxis de COVID-19. El objetivo de la presente revisión consiste en establecer un marco de referencia de la clasificación taxonómica del SARS-CoV-2 y la relación que guardan con otros coronavirus, así como su estructura y forma de propagarse en el ser humano. También se presentan las características y síntomas de pacientes con COVID-19, los métodos de detección y potenciales tratamientos.
Keywords	betacoronavirus ; mechanism of action ; sars-cov-2 ; sars-cov-2 testing ; transmission ; antiviral agents ; Medicine ; R ; Medicine (General) ; R5-920
Language	English
Publishing date	2020-09-01T00:00:00Z
Publisher	Medwave Estudios Limitada
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Origin, structural characteristics, prevention measures, diagnosis and potential drugs to prevent and COVID-19.

Santos-Sánchez, Norma Francenia / Salas-Coronado, Raúl

Medwave

2020 Volume 20, Issue 8, Page(s) e8037

Abstract: Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) causes COVID-19 (Coronavirus disease 2019). This disease was detected in the city of Wuhan in China in December 2019. People infected with COVID-19 shows varying manifestations, depending on ... ...

Title translation	Origen, características estructurales, medidas de prevención, diagnóstico y fármacos potenciales para prevenir y controlar COVID-19.
Abstract	Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) causes COVID-19 (Coronavirus disease 2019). This disease was detected in the city of Wuhan in China in December 2019. People infected with COVID-19 shows varying manifestations, depending on their health and age. The most common symptoms are fever, cough, myalgia, fatigue, odynophagia, and dyspnea. Infected adults older 60 years of age are the group of patients most susceptible to severe COVID-19 states and present comor-bidity in the presence of chronic diseases. On the other hand, it is also essential to have tests to detect SARS-COV-2 in people and follow the evolution of COVID-19 quickly, reliably, and cheap. To achieve this, there are real-time reverse transcription pol-ymerase chain reaction (RT-PCR) tests, isothermal nucleic acid amplification, and enzyme immunostimulation. Currently, there are no drug treatments to prevent infection and to combat the virus's effects. However, different research groups that are conduct-ing in vitro, in vivo, and in silico tests to find drugs able to provide an immune response and to control infection in humans with SARS-CoV-2. Chloroquine, hydroxychloroquine, remdesivir, interferon-2b, and oseltamivir are some pharmacological options evaluated in clinical trials for prophylaxis of COVID-19. The purpose of this review is to establish a reference framework for taxonomic classification of SARS-CoV-2 and the relationship they have with other CoVs, as well as their structure and propaga-tion pathways in humans. The characteristics and symptoms presented by patients with COVID-19, the detection methods, and possible treatments are also presented.
MeSH term(s)	Age Factors ; Betacoronavirus/classification ; Betacoronavirus/isolation & purification ; Clinical Laboratory Techniques ; Coronavirus Infections/diagnosis ; Coronavirus Infections/drug therapy ; Coronavirus Infections/epidemiology ; Humans ; Pandemics ; Pneumonia, Viral/diagnosis ; Pneumonia, Viral/drug therapy ; Pneumonia, Viral/epidemiology ; Risk Factors
Keywords	covid19
Language	English
Publishing date	2020-09-25
Publishing country	Chile
Document type	Journal Article ; Review
ZDB-ID	2818022-7
ISSN	0717-6384 ; 0717-6384
ISSN (online)	0717-6384
ISSN	0717-6384
DOI	10.5867/medwave.2020.08.8037
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Preliminary Analysis of Unsaturated Fatty Acid Profiles of Coffea arabica L., in Samples with a Denomination of Origin and Speciality of Oaxaca, Mexico.

Jiménez-Mendoza, Jesica Ariadna / Santos-Sánchez, Norma Francenia / Pérez-Santiago, Alma Dolores / Sánchez-Medina, Marco Antonio / Matías-Pérez, Diana / García-Montalvo, Iván Antonio

Journal of oleo science

2023 Volume 72, Issue 2, Page(s) 153–160

Abstract: In February 2020, Coffea arabica L. grown on the coast and in the Southern Sierra Madre of the state of Oaxaca, Mexico obtained the denomination of origin. Which does not have data on color and chemical composition, the first associated with the degree ... ...

Abstract	In February 2020, Coffea arabica L. grown on the coast and in the Southern Sierra Madre of the state of Oaxaca, Mexico obtained the denomination of origin. Which does not have data on color and chemical composition, the first associated with the degree of roasting and the second with lipids (17-18%), as the group of compounds responsible, in part, for flavor, consistency, and may contribute to health benefits. In the present work, color was determined on the CIE Lab* scale and the unsaturated fatty acids by Nuclear Magnetic Resonance (NMR) of
MeSH term(s)	Coffea/chemistry ; Coffee/chemistry ; Mexico ; Seeds/chemistry ; Fatty Acids, Unsaturated/analysis
Chemical Substances	Coffee ; Fatty Acids, Unsaturated
Language	English
Publishing date	2023-02-03
Publishing country	Japan
Document type	Journal Article
ZDB-ID	2218264-0
ISSN	1347-3352 ; 1345-8957
ISSN (online)	1347-3352
ISSN	1345-8957
DOI	10.5650/jos.ess22254
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Article: Origen, características estructurales, medidas de prevención, diagnóstico y fármacos potenciales para prevenir y controlar COVID-19/ Origin, structural characteristics, prevention measures, diagnosis and potential drugs to prevent and COVID-19

Santos-Sánchez, Norma Francenia / Salas-Coronado, Raúl

Medwave

Abstract	El síndrome respiratorio agudo severo coronavirus 2 (SARS-CoV-2) es responsable de la enfermedad denominada COVID-19 (acrónimo del inglés Coronavirus Disease-2019). Esta enfermedad fue detectada inicialmente en la ciudad de Wuhan, China en diciembre de 2019. Las personas contagiadas con COVID-19 presentan síntomas variados, dependiendo de su estado de salud y edad. Los síntomas más comunes son fiebre, tos, mialgia, fatiga, odinofagia y disnea. También se ha observado que en algunos pacientes, la infección es asintomática. Los adultos mayores de 60 años infectados son el grupo de pacientes más susceptibles a desarrollar estados severos de COVID-19 y se presenta comorbilidad en presencia de enfermedades crónicas. Por otra parte, también es importante disponer de pruebas que permitan detectar al SARS-COV-2 y seguir la evolución de COVID-19 de forma rápida, confiable y barata. Para lograr esto, existen pruebas de reacción en cadena de la polimerasa de transcripción inversa en tiempo real (RT-PCR), de amplificación isotérmica de ácido nucleico y de inmunoestimulación enzimática. Actualmente, no existen tratamientos para la prevención del contagio y combatir los efectos del virus en la salud humana. Sin embargo, en el mundo hay grupos de investigación que están realizando pruebas in vitro, in vivo e in silico para encontrar fármacos que sean capaces de prevenir y/o controlar la infección en humanos con SARS-CoV-2. La cloroquina, hidroxicloroquina, remdesivir, interferon-ï¡2b y oseltamivir son algunas de las opciones farmacológicas que están siendo evaluadas en pruebas clínicas para la profilaxis de COVID-19. El objetivo de la presente revisión consiste en establecer un marco de referencia de la clasificación taxonómica del SARS-CoV-2 y la relación que guardan con otros coronavirus, así como su estructura y forma de propagarse en el ser humano. También se presentan las características y síntomas de pacientes con COVID-19, los métodos de detección y potenciales tratamientos.
Keywords	covid19
Publisher	WHO
Document type	Article
Note	WHO #Covidence: #814798
Database	COVID19

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Article ; Online: Characterization of pectin extracted under mild conditions from tempesquistle (Sideroxylon palmeri) fruit at two maturity stages.

Ayala-López, Jessica Sofía / Pacheco-Contreras, Víctor Inocencio / Santos-Sánchez, Norma Francenia / Hernández-Carlos, Beatriz / Lara-Ruiz, Gabriela F / Salas-Coronado, Raúl

Acta scientiarum polonorum. Technologia alimentaria

2020 Volume 19, Issue 3, Page(s) 347–357

Abstract: Background: le tree (Sideroxylon palmeri) belongs to family Sapotaceae, and its fruits contain hydrophilic and hydrophobic gums. Aim of this study was to develop an extraction method for pectin, a hydrophilic gum, from green and ripe tempesquistle fruit. ...

Abstract	Background: le tree (Sideroxylon palmeri) belongs to family Sapotaceae, and its fruits contain hydrophilic and hydrophobic gums. Aim of this study was to develop an extraction method for pectin, a hydrophilic gum, from green and ripe tempesquistle fruit. The extraction method was gentle to minimize potential structural changes in pectin, a maceration was used, and then pectin precipitation was induced with acetone at room temperature. Pectin characterization was carried out in two steps. The first step consisted of qualitative tests of Molisch, Fehling and Lugol. The second step consisted of quantitative tests to determine esterification degree (ED) by ATR-FTIR and D-galacturonic acid (D-GalA) content with a colorimetric assay. ATR-FTIR spectroscopic method revealed that green and ripe tempesquistle fruit have an ED of 0% and 30.4%, respectively. Both fruit have a low ED pectin. The content of D-GalA in green and ripe pectins was 18.8 ±2.7% and 20.2 ±0.6%, respectively. The yield obtained in green and ripe fruit samples was 1.6 ±0.2% and 3.0 ±0.1%, respectively. The extraction method allowed two types of pectins obtained in function of maturity stage of tempesquistle fruit distinguishable by. Methods: istle tree (Sideroxylon palmeri) belongs to family Sapotaceae, and its fruits contain hydrophilic and hydrophobic gums. Aim of this study was to develop an extraction method for pectin, a hydrophilic gum, from green and ripe tempesquistle fruit. The extraction method was gentle to minimize potential structural changes in pectin, a maceration was used, and then pectin precipitation was induced with acetone at room temperature. Pectin characterization was carried out in two steps. The first step consisted of qualitative tests of Molisch, Fehling and Lugol. The second step consisted of quantitative tests to determine esterification degree (ED) by ATR-FTIR and D-galacturonic acid (D-GalA) content with a colorimetric assay. ATR-FTIR spectroscopic method revealed that green and ripe tempesquistle fruit have an ED of 0% and 30.4%, respectively. Both fruit have a low ED pectin. The content of D-GalA in green and ripe pectins was 18.8 ±2.7% and 20.2 ±0.6%, respectively. The yield obtained in green and ripe fruit samples was 1.6 ±0.2% and 3.0 ±0.1%, respectively. The extraction method allowed two types of pectins obtained in function of maturity stage of tempesquistle fruit distinguishable by ATR. Results: istle tree (Sideroxylon palmeri) belongs to family Sapotaceae, and its fruits contain hydrophilic and hydrophobic gums. Aim of this study was to develop an extraction method for pectin, a hydrophilic gum, from green and ripe tempesquistle fruit. The extraction method was gentle to minimize potential structural changes in pectin, a maceration was used, and then pectin precipitation was induced with acetone at room temperature. Pectin characterization was carried out in two steps. The first step consisted of qualitative tests of Molisch, Fehling and Lugol. The second step consisted of quantitative tests to determine esterification degree (ED) by ATR-FTIR and D-galacturonic acid (D-GalA) content with a colorimetric assay. ATR-FTIR spectroscopic method revealed that green and ripe tempesquistle fruit have an ED of 0% and 30.4%, respectively. Both fruit have a low ED pectin. The content of D-GalA in green and ripe pectins was 18.8 ±2.7% and 20.2 ±0.6%, respectively. The yield obtained in green and ripe fruit samples was 1.6 ±0.2% and 3.0 ±0.1%, respectively. The extraction method allowed two types of pectins obtained in function of maturity stage of tempesquistle fruit distinguishable by ATR-FTIR.
MeSH term(s)	Esterification ; Fruit/chemistry ; Hexuronic Acids ; Pectins/analysis ; Plant Extracts/analysis ; Sapotaceae/chemistry ; Spectroscopy, Fourier Transform Infrared
Chemical Substances	Hexuronic Acids ; Plant Extracts ; galacturonic acid (4JK6RN80GF) ; Pectins (89NA02M4RX)
Language	English
Publishing date	2020-09-27
Publishing country	Poland
Document type	Journal Article
ZDB-ID	2428915-2
ISSN	1898-9594 ; 1644-0730
ISSN (online)	1898-9594
ISSN	1644-0730
DOI	10.17306/J.AFS.0850
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Chemical Characterization of Plant Extracts and Evaluation of their Nematicidal and Phytotoxic Potential.

Velasco-Azorsa, Raúl / Cruz-Santiago, Héctor / Cid Del Prado-Vera, Ignacio / Ramirez-Mares, Marco Vinicio / Gutiérrez-Ortiz, María Del Rocío / Santos-Sánchez, Norma Francenia / Salas-Coronado, Raúl / Villanueva-Cañongo, Claudia / Lira-de León, Karla Isabel / Hernández-Carlos, Beatriz

Molecules (Basel, Switzerland)

2021 Volume 26, Issue 8

Abstract: ... Nacobbus ... ...

Abstract	Nacobbus aberrans
MeSH term(s)	Animals ; Antinematodal Agents/chemistry ; Antinematodal Agents/pharmacology ; Carbon-13 Magnetic Resonance Spectroscopy ; Lycopersicon esculentum/drug effects ; Plant Extracts/chemistry ; Plant Extracts/toxicity ; Proton Magnetic Resonance Spectroscopy ; Tylenchoidea/drug effects
Chemical Substances	Antinematodal Agents ; Plant Extracts
Language	English
Publishing date	2021-04-12
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/molecules26082216
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Article ; Online: Productivity and Antioxidant Activity of Wild, Reconstituted, and Hybrid Strains of the Pink Oyster Mushroom, Pleurotus djamor (Agaricomycetes), from Mexico.

Oropeza-Guerrero, Magdalena Paz / Santos-Sánchez, Norma Francenia / Salas-Coronado, Raúl / Valadez-Blanco, Rogelio / Hernández-Carlos, Beatriz / Guadarrama-Mendoza, Paula Cecilia

International journal of medicinal mushrooms

2018 Volume 20, Issue 7, Page(s) 607–621

Abstract: The genus Pleurotus is the third most commonly produced edible fungi in the world. In addition, species of genus Pleurotus have functional properties such as anticancer, antiviral, antimicrobial, anti-inflammatory, and antioxidant activities, which are ... ...

Abstract	The genus Pleurotus is the third most commonly produced edible fungi in the world. In addition, species of genus Pleurotus have functional properties such as anticancer, antiviral, antimicrobial, anti-inflammatory, and antioxidant activities, which are mainly attributed to phenolic compounds. For these reasons, this study evaluated the productivity and antioxidant activity (AA) of 2 wild strains (white and pink), 2 reconstituted strains (called "BB" and "RR"), and 4 hybrid strains (H1, H2, H3, and H4) of P. djamor from monokaryotic components (neohaplonts). The results showed that the white wild-type strain and the reconstituted strains exhibited the best production potential, expressed as biological efficiency and mycelial growth rate. The carpophores of hybrid strains H1 and H3 had the greatest AA, as evaluated with DPPH radical scavenging and reducing power assays, respectively. The H3 strain had the highest total phenol (TP) content. Pearson correlations led us to conclude that the mycelial growth rate has a regular inverse correlation with TP and a regular direct correlation with AA of methanolic extracts from carpophores and myce-lia. This is, to our knowledge, the first report in the literature about the effect of Pleurotus strain hybridization through a chemical de-dikaryotization process on TP content.
MeSH term(s)	Anti-Infective Agents/chemistry ; Anti-Infective Agents/isolation & purification ; Antioxidants/chemistry ; Antioxidants/isolation & purification ; Chimera/genetics ; Chimera/growth & development ; Mexico ; Mycelium/chemistry ; Mycelium/genetics ; Mycelium/growth & development ; Phenols/chemistry ; Phenols/isolation & purification ; Plant Extracts/chemistry ; Plant Extracts/isolation & purification ; Pleurotus/chemistry ; Pleurotus/genetics ; Pleurotus/growth & development ; Vegetables/chemistry ; Vegetables/genetics ; Vegetables/growth & development
Chemical Substances	Anti-Infective Agents ; Antioxidants ; Phenols ; Plant Extracts
Language	English
Publishing date	2018-07-04
Publishing country	United States
Document type	Journal Article
ZDB-ID	2108803-2
ISSN	1940-4344 ; 1521-9437
ISSN (online)	1940-4344
ISSN	1521-9437
DOI	10.1615/IntJMedMushrooms.2018026382
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Article ; Online: Chemical Characterization of Plant Extracts and Evaluation of their Nematicidal and Phytotoxic Potential

Raúl Velasco-Azorsa / Héctor Cruz-Santiago / Ignacio Cid del Prado-Vera / Marco Vinicio Ramirez-Mares / María del Rocío Gutiérrez-Ortiz / Norma Francenia Santos-Sánchez / Raúl Salas-Coronado / Claudia Villanueva-Cañongo / Karla Isabel Lira-de León / Beatriz Hernández-Carlos

Molecules, Vol 26, Iss 2216, p

2021 Volume 2216

Abstract: Nacobbus aberrans ranks among the “top ten” plant-parasitic nematodes of phytosanitary importance. It causes significant losses in commercial interest crops in America and is a potential risk in the European Union. The nematicidal and phytotoxic ... ...

Abstract	Nacobbus aberrans ranks among the “top ten” plant-parasitic nematodes of phytosanitary importance. It causes significant losses in commercial interest crops in America and is a potential risk in the European Union. The nematicidal and phytotoxic activities of seven plant extracts against N. aberrans and Solanum lycopersicum were evaluated in vitro, respectively. The chemical nature of three nematicidal extracts (EC 50,48h ≤ 113 µg mL −1 ) was studied through NMR analysis. Plant extracts showed nematicidal activity on second-stage juveniles (J2): (≥87%) at 1000 µg mL −1 after 72 h, and their EC 50 values were 71.4–468.1 and 31.5–299.8 µg mL −1 after 24 and 48 h, respectively. Extracts with the best nematicidal potential (EC 50,48h < 113 µg mL −1 ) were those from Adenophyllum aurantium , Alloispermum integrifolium , and Tournefortia densiflora , which inhibited L. esculentum seed growth by 100% at 20 µg mL −1 . Stigmasterol ( 1 ), β-sitosterol ( 2 ), and α-terthienyl ( 3 ) were identified from A. aurantium , while 1 , 2 , lutein ( 4 ), centaurin ( 5 ), patuletin-7-β- O -glucoside ( 6 ), pendulin ( 7 ), and penduletin ( 8 ) were identified from A. integrifolium . From T. densiflora extract, allantoin ( 9 ), 9- O -angeloyl-retronecine ( 10 ), and its N-oxide ( 11 ) were identified. The present research is the first to report the effect of T. densiflora , A. integrifolium , and A. aurantium against N. aberrans and chemically characterized nematicidal extracts that may provide alternative sources of botanical nematicides.
Keywords	Nacobbus aberrans ; nematicidal activity ; α-terthienyl ; stigmasterol ; quercetagetin derivatives ; 9- O -angeloyl-retronecine N-oxide ; Organic chemistry ; QD241-441
Subject code	333
Language	English
Publishing date	2021-04-01T00:00:00Z
Publisher	MDPI AG
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article: Effect of nitrogen fertilization and Bacillus licheniformis biofertilizer addition on the antioxidants compounds and antioxidant activity of greenhouse cultivated tomato fruits (Solanum lycopersicum L. var. Sheva)

Ochoa-Velasco, Carlos Enrique / Beatriz Hernández-Carlos / Fidencio Sustaita-Rivera / Norma Francenia Santos-Sánchez / Raúl Salas-Coronado / Rogelio Valadez-Blanco / Susana García-Ortega

Scientia horticulturae. 2016 Mar. 30, v. 201

2016

Abstract: Tomato is one of the principal crops worldwide due to its large consumption. In this work, biofertilization treatments, based on Bacillus licheniformis, with different nitrogen fertilization doses were investigated to improve the functional quality of ... ...

Abstract	Tomato is one of the principal crops worldwide due to its large consumption. In this work, biofertilization treatments, based on Bacillus licheniformis, with different nitrogen fertilization doses were investigated to improve the functional quality of tomato under greenhouse conditions. Treatments tested used nitrogen fertilization only (NF) or nitrogen combined with biofertilization (BF) with the following nitrogen doses: 0, 25, 50, 75 and 100% of the recommended nitrogen dose. The lycopene content increased with the nitrogen dose with the BF treatments resulting in lower lycopene contents in comparison with the NF counterparts. The contents of hydrophilic antioxidant compounds (vitamin C and total phenols), as well as antioxidant activity (DPPH scavenging capacity and FRAP) increased as the nitrogen dose was reduced. The biosynthesis of the hydrophilic antioxidant compounds appears to be an induced resistance mechanism caused by the nitrogen-deficiency stress. In addition, B. licheniformis had a positive net effect on the synthesis of flavonoids by the plant at a 75% nitrogen dose. A two-factorial ANOVA (nitrogen fertilizer dose×biofertilizer addition) evidenced that the greatest contribution of the nitrogen fertilizer dose was to the total phenols content and antioxidant activity, while the biofertilizer mainly contributed to the vitamin C and lycopene contents. In general, the content of antioxidant compounds was affected by the interaction of the two factors. Significantly, this is the first report about the combined effect of the nitrogen fertilization dose and biofertilization addition during tomato cultivation, on the content of antioxidant compounds in tomato fruits.
Keywords	analysis of variance ; antioxidant activity ; antioxidants ; ascorbic acid ; Bacillus licheniformis ; biofertilizers ; biosynthesis ; crops ; flavonoids ; fruits ; greenhouse production ; greenhouses ; hydrophilicity ; induced resistance ; lycopene ; nitrogen ; nitrogen fertilizers ; phenols ; Solanum lycopersicum ; tomatoes
Language	English
Dates of publication	2016-0330
Size	p. 338-345.
Publishing place	Elsevier B.V.
Document type	Article
ZDB-ID	185557-8
ISSN	0304-4238
ISSN	0304-4238
DOI	10.1016/j.scienta.2016.02.015
Database	NAL-Catalogue (AGRICOLA)

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Article: Effect of rotating tray drying on antioxidant components, color and rehydration ratio of tomato saladette slices

Santos-Sánchez, Norma Francenia / Valadez-Blanco, Rogelio / Gómez-Gómez, Mayra Soledad / Pérez-Herrera, Aleyda / Salas-Coronado, Raúl

Lwt - food science and technology. 2012 Apr., v. 46, no. 1

2012

Abstract: A rotating tray drier was built and controlled for drying of tomato slices at different temperatures (45, 50 and 60 °C) and air velocities (0.6 and 1.2 m s−1) with and without tray rotation. Drying curves were fitted using the Page mathematical model. ... ...

Abstract	A rotating tray drier was built and controlled for drying of tomato slices at different temperatures (45, 50 and 60 °C) and air velocities (0.6 and 1.2 m s−1) with and without tray rotation. Drying curves were fitted using the Page mathematical model. Effective diffusivities for the different drying conditions correlated well with the chemical composition variables; lycopene, ascorbic acid and total polyphenols (TPP). The effect of drying conditions over quality of dried tomato slices was evaluated by quantifying their contents of lycopene, ascorbic acid and TPP, and measuring their color and rehydration ratio. The best drying conditions were 60 °C drying temperature and 0.6 m s−1 air velocity with the use of tray rotation. These conditions minimized the degradation of lycopene (2.9%), ascorbic acid (17.3%) and TPP (2.1%) during drying. Tray rotation has a contribution on the a* color value, as well as on the lycopene and ascorbic acid concentrations (5% significance level).
Keywords	air ; antioxidants ; ascorbic acid ; chemical composition ; color ; drying ; drying temperature ; lycopene ; mathematical models ; polyphenols ; rehydration ; tomatoes ; trays
Language	English
Dates of publication	2012-04
Size	p. 298-304.
Publishing place	Elsevier Ltd
Document type	Article
ZDB-ID	241369-3
ISSN	0460-1173 ; 0023-6438
ISSN	0460-1173 ; 0023-6438
DOI	10.1016/j.lwt.2011.09.015
Database	NAL-Catalogue (AGRICOLA)

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