Pub Date : 2023-07-31DOI: 10.15446/acag.v71n4.105631
Elizabeth Gil Archila, Wilman Antonio Delgado Ávila, Luis Gonzalo Sequeda-Castañeda, Luis Enrique Cuca Suárez
The genus Ocotea of the Lauraceae family has species whose wood is employed in construction and for other purposes including as biofuel, for disinfection, cosmetics, and in the treatment of various diseases. Studies regarding Ocotea caudata’s phytochemical and pharmacognostic uses are scarce, thus, this work is the first to study its fruits. O. caudata (Nees) Mez fruits from Colombia were investigated for their oil content. Heptane extraction from O. caudata fruit oil yielded 54.9 % of total lipids, where the fatty acid composition was determined. The oil analysis by gas chromatography with flame ionization detection (GC-FID) demonstrated that lauric acid was the most abundant fatty acid (51.7 %, C12:0). In addition to lauric acid, oleic acid (23.6 %, C18:1) and palmitic acid (16.6 %, C16:0) were found. The fatty acid composition was confirmed by gas chromatography-mass spectrometry (GC-MS). O. caudata can be considered as a species that accumulates medium-chain saturated fatty acids (C12) and long-chain unsaturated fatty acids (C18). In conclusion, many of its health benefits may be due to its high content of lauric acid. Therefore, this oil is highly regarded for its nutritional and health properties.
{"title":"Fatty acid composition in Ocotea caudata (Nees) Mez (Lauraceae) fruits from Colombia","authors":"Elizabeth Gil Archila, Wilman Antonio Delgado Ávila, Luis Gonzalo Sequeda-Castañeda, Luis Enrique Cuca Suárez","doi":"10.15446/acag.v71n4.105631","DOIUrl":"https://doi.org/10.15446/acag.v71n4.105631","url":null,"abstract":"The genus Ocotea of the Lauraceae family has species whose wood is employed in construction and for other purposes including as biofuel, for disinfection, cosmetics, and in the treatment of various diseases. Studies regarding Ocotea caudata’s phytochemical and pharmacognostic uses are scarce, thus, this work is the first to study its fruits. O. caudata (Nees) Mez fruits from Colombia were investigated for their oil content. Heptane extraction from O. caudata fruit oil yielded 54.9 % of total lipids, where the fatty acid composition was determined. The oil analysis by gas chromatography with flame ionization detection (GC-FID) demonstrated that lauric acid was the most abundant fatty acid (51.7 %, C12:0). In addition to lauric acid, oleic acid (23.6 %, C18:1) and palmitic acid (16.6 %, C16:0) were found. The fatty acid composition was confirmed by gas chromatography-mass spectrometry (GC-MS). O. caudata can be considered as a species that accumulates medium-chain saturated fatty acids (C12) and long-chain unsaturated fatty acids (C18). In conclusion, many of its health benefits may be due to its high content of lauric acid. Therefore, this oil is highly regarded for its nutritional and health properties.","PeriodicalId":476429,"journal":{"name":"Acta Agronómica","volume":"133 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135314510","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-30DOI: 10.15446/acag.v71n3.98623
Emanuel Junco Carlón, Marco Vinicio Gómez Meza, Humberto Gonzalez Rodriguez, José Ángel Armenta Quintana, Israel Cantu Silva, Andres Eduardo Estrada Castrillón, Mauricio Cotera Correa, Rafael Ramírez Orduña
El presente estudio se llevó a cabo para evaluar el efecto de Lippia palmeri S. Watson y la sincronización de nutrientes de cuatro dietas para cabras criollas. Se utilizó un modelo de mediciones repetidas que evaluó las variables de producción de leche, consumo de alimento y conversión alimenticia. Se utilizaron tres cabras criollas por tratamiento para evaluar las diferencias entre las dietas. Las cabras fueron alimentadas durante un periodo de 3 meses en el que se ofreció consumo controlado de las dietas. De acuerdo con los resultados observados, los tratamientos no mostraron diferencias estadísticas significativas (p>0.05) en las tres variables valoradas. Las cabras en el tratamiento ASINC con ORE (T1) lograron una tendencia de mayor consumo de alimento en comparación con los otros tratamientos. Con respecto a la producción de leche, se observó una variación entre los tratamientos, donde ASINC sin ORE (T2) mostró mayor producción en el mes 1, ASINC con ORE (T1) en el mes 2 y ASINC con ORE (T4) en el último mes de prueba. La producción de leche varió entre 0.543 kg/día y 1.027 kg/día. El consumo de alimento fluctuó entre 0.821 kg/día y 1.588 kg/día mientras que el rechazo de alimento fue de 0.036 kg/día a 0.259 kg/día. Los resultados sugieren que la inclusión de Lippia palmeri S. Watson en la dieta de cabras en lactación no causa cambios en las variables estudiadas, sin embargo, se puede utilizar como un aditivo natural, para apoyar la producción en temporada de escasez de alimento en el agostadero de regiones áridas y semiáridas.
{"title":"Efecto del orégano (Lippia palmeri S. Watson) en dietas sincrónicas en la producción de leche caprina","authors":"Emanuel Junco Carlón, Marco Vinicio Gómez Meza, Humberto Gonzalez Rodriguez, José Ángel Armenta Quintana, Israel Cantu Silva, Andres Eduardo Estrada Castrillón, Mauricio Cotera Correa, Rafael Ramírez Orduña","doi":"10.15446/acag.v71n3.98623","DOIUrl":"https://doi.org/10.15446/acag.v71n3.98623","url":null,"abstract":"El presente estudio se llevó a cabo para evaluar el efecto de Lippia palmeri S. Watson y la sincronización de nutrientes de cuatro dietas para cabras criollas. Se utilizó un modelo de mediciones repetidas que evaluó las variables de producción de leche, consumo de alimento y conversión alimenticia. Se utilizaron tres cabras criollas por tratamiento para evaluar las diferencias entre las dietas. Las cabras fueron alimentadas durante un periodo de 3 meses en el que se ofreció consumo controlado de las dietas. De acuerdo con los resultados observados, los tratamientos no mostraron diferencias estadísticas significativas (p>0.05) en las tres variables valoradas. Las cabras en el tratamiento ASINC con ORE (T1) lograron una tendencia de mayor consumo de alimento en comparación con los otros tratamientos. Con respecto a la producción de leche, se observó una variación entre los tratamientos, donde ASINC sin ORE (T2) mostró mayor producción en el mes 1, ASINC con ORE (T1) en el mes 2 y ASINC con ORE (T4) en el último mes de prueba. La producción de leche varió entre 0.543 kg/día y 1.027 kg/día. El consumo de alimento fluctuó entre 0.821 kg/día y 1.588 kg/día mientras que el rechazo de alimento fue de 0.036 kg/día a 0.259 kg/día. Los resultados sugieren que la inclusión de Lippia palmeri S. Watson en la dieta de cabras en lactación no causa cambios en las variables estudiadas, sin embargo, se puede utilizar como un aditivo natural, para apoyar la producción en temporada de escasez de alimento en el agostadero de regiones áridas y semiáridas.","PeriodicalId":476429,"journal":{"name":"Acta Agronómica","volume":"136 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136364629","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-30DOI: 10.15446/acag.v71n3.105855
Juan Xavier Valarezo Maldonado, Manuel Danilo Carrillo Zenteno, Galo Alexander Rubio Zapata, Karina Elizabeth Peña Salazar, Yelitza García-Orellana
El cadmio (Cd) está presente en los suelos cacaoteros del Ecuador; esto puede ser resultado de diversas actividades antrópicas como la agricultura, la minería, el transporte, etc. Ello podría causar problemas en la comercialización de los productos agrícolas a nivel nacional e internacional y también en la salud de los consumidores, al ser absorbido por las plantas e ingresando en la cadena trófica. Para reducir la absorción de Cd del suelo, se evaluaron los efectos de la omisión de macronutrientes sobre la absorción de Cd por plantas de arroz en seis suelos tropicales del Ecuador; para ello, se realizó un ensayo en condiciones de invernadero, donde se evaluaron nueve tratamientos: testigo 1 (sin fertilización y sin Cd), un testigo 2 (sin fertilización con Cd), fertilización completa (N, P, K, S, Mg, Ca) y los seis tratamientos restantes de omisión de un nutriente a la vez, usando un diseño de experimentos de bloques completos al azar, con parcelas divididas, lo cual fue replicado tres veces. Las variables evaluadas fueron comparadas empleando las pruebas de Tukey y Bonferroni con un valor de P<0.05. Los resultados encontrados muestran que la fertilización completa estimula la absorción de Cd en los suelos de las seis provincias evaluadas (Esmeraldas, Manabí, Guayas, El Oro, Los Ríos y Sucumbíos); además, las omisiones de los nutrientes afectaron la absorción del Cd, variando independientemente de las características del suelo, por lo que se considera esta técnica como una alternativa válida para evaluar la absorción de Cd bajo diferentes condiciones edafoclimáticas y garantizar la inocuidad del producto que va a ser consumido por la población.
镉(Cd)存在于厄瓜多尔的可可土壤中;这可能是各种人类活动的结果，如农业、采矿、运输等。这可能会在国家和国际一级的农产品销售以及消费者的健康方面造成问题，因为它们被植物吸收并进入食物链。为了减少土壤中镉的吸收，在厄瓜多尔的6个热带土壤中，评估了大量养分缺失对水稻吸收镉的影响;为此,在温室条件进行了试验,评估了九个治疗:见证1(没有受精和Cd),见证2(完全没有Cd)受精,受精(N、P、K, Ca, Mg)其余六疗程遗漏一个营养同时,使用实验设计,模块完成随机,地块分隔,这三次被复制。采用Tukey和Bonferroni检验对评价变量进行比较，P<为0.05。结果表明，完全施肥可促进6个省(埃斯美拉达斯、马那比、瓜亚斯、埃尔奥罗、洛斯里奥斯和sucumbios)土壤中Cd的吸收;此外,忽略影响营养吸收Cd,不管土壤特性,因此认为这种技术作为一种替代评估有效吸收Cd在不同条件下edafoclimáticas和确保产品的安全性会被人口。
{"title":"Omisión de macronutrientes y biodisponibilidad de cadmio en suelos de Ecuador","authors":"Juan Xavier Valarezo Maldonado, Manuel Danilo Carrillo Zenteno, Galo Alexander Rubio Zapata, Karina Elizabeth Peña Salazar, Yelitza García-Orellana","doi":"10.15446/acag.v71n3.105855","DOIUrl":"https://doi.org/10.15446/acag.v71n3.105855","url":null,"abstract":"El cadmio (Cd) está presente en los suelos cacaoteros del Ecuador; esto puede ser resultado de diversas actividades antrópicas como la agricultura, la minería, el transporte, etc. Ello podría causar problemas en la comercialización de los productos agrícolas a nivel nacional e internacional y también en la salud de los consumidores, al ser absorbido por las plantas e ingresando en la cadena trófica. Para reducir la absorción de Cd del suelo, se evaluaron los efectos de la omisión de macronutrientes sobre la absorción de Cd por plantas de arroz en seis suelos tropicales del Ecuador; para ello, se realizó un ensayo en condiciones de invernadero, donde se evaluaron nueve tratamientos: testigo 1 (sin fertilización y sin Cd), un testigo 2 (sin fertilización con Cd), fertilización completa (N, P, K, S, Mg, Ca) y los seis tratamientos restantes de omisión de un nutriente a la vez, usando un diseño de experimentos de bloques completos al azar, con parcelas divididas, lo cual fue replicado tres veces. Las variables evaluadas fueron comparadas empleando las pruebas de Tukey y Bonferroni con un valor de P<0.05. Los resultados encontrados muestran que la fertilización completa estimula la absorción de Cd en los suelos de las seis provincias evaluadas (Esmeraldas, Manabí, Guayas, El Oro, Los Ríos y Sucumbíos); además, las omisiones de los nutrientes afectaron la absorción del Cd, variando independientemente de las características del suelo, por lo que se considera esta técnica como una alternativa válida para evaluar la absorción de Cd bajo diferentes condiciones edafoclimáticas y garantizar la inocuidad del producto que va a ser consumido por la población.","PeriodicalId":476429,"journal":{"name":"Acta Agronómica","volume":"376 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136364800","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-30DOI: 10.15446/acag.v71n3.96989
Ingrid Alexandra Triana Gasca, Diego Mauricio Díaz Ramírez, Victoria Eugenia Vallejo Quintero
En los últimos años, la expansión de la frontera agropecuaria en el Páramo de Guerrero (Colombia) ha transformado y alterado este frágil y estratégico ecosistema, afectando la prestación de bienes y servicios ambientales y disminuyendo la calidad edáfica. El presente estudio evaluó el efecto del monocultivo de papa (Solanum tuberosum L.) sobre la calidad edáfica en el Páramo de Guerrero. Para ello se comparó un conjunto total de datos (CTD) de 14 variables edáficas en tres agroecosistemas: (1) monocultivo convencional de papa (SC), (2) suelo en descanso (SD) y (3) un bosque (BO). Posteriormente, a partir del CTD se seleccionó un conjunto mínimo de datos (CMD) de 11 indicadores fisicoquímicos y microbiológicos empleados en la determinación del índice de calidad de suelos (ICS). Los mayores valores del ICS se obtuvieron en el BO (1.11) y SD (1.10), seguido del SC (1.07). Los resultados evidencian que las prácticas agrícolas implementadas en el páramo han afectado la calidad edáfica, lo cual es atribuido principalmente a menores contenidos de carbono (C) orgánico, humedad y actividad enzimática (catalasa) en el SC. Así mismo, a través de la guía diagnóstica en campo, se evidenciaron alteraciones en indicadores físicos como la resistencia al rompimiento, presencia de capas endurecidas y disminución en la velocidad de infiltración.
近年来，paramo de Guerrero(哥伦比亚)农业边界的扩大改变和改变了这一脆弱而具有战略意义的生态系统，影响了环境产品和服务的提供，降低了土壤质量。本研究评价了马铃薯单一栽培对格雷罗州parramo土壤质量的影响。在本研究中，我们分析了三种农业生态系统中14个土壤变量的总数据集(CTD):(1)传统单一栽培马铃薯(SC)，(2)休养土壤(SD)和(3)森林(BO)。本研究的目的是确定土壤质量指数(bci)中土壤理化和微生物指标的最小数据集(CMD)。bci值最高的是BO(1.11)和SD(1.10)，其次是SC(1.07)。结果偏离部署的农业做法在旷野edáfica质量影响,这主要归因于以下内容有机碳(C)、湿度和活动方向(SC。同样,过氧化氢酶)通过在实地,诊断指南表明被改变的物理指标,如撕,巴勒斯坦方层的存在阻力,并放缓速度的渗入。
{"title":"Evaluación del impacto del monocultivo de papa sobre la calidad edáfica en el Páramo de Guerrero (Cundinamarca, Colombia)","authors":"Ingrid Alexandra Triana Gasca, Diego Mauricio Díaz Ramírez, Victoria Eugenia Vallejo Quintero","doi":"10.15446/acag.v71n3.96989","DOIUrl":"https://doi.org/10.15446/acag.v71n3.96989","url":null,"abstract":"En los últimos años, la expansión de la frontera agropecuaria en el Páramo de Guerrero (Colombia) ha transformado y alterado este frágil y estratégico ecosistema, afectando la prestación de bienes y servicios ambientales y disminuyendo la calidad edáfica. El presente estudio evaluó el efecto del monocultivo de papa (Solanum tuberosum L.) sobre la calidad edáfica en el Páramo de Guerrero. Para ello se comparó un conjunto total de datos (CTD) de 14 variables edáficas en tres agroecosistemas: (1) monocultivo convencional de papa (SC), (2) suelo en descanso (SD) y (3) un bosque (BO). Posteriormente, a partir del CTD se seleccionó un conjunto mínimo de datos (CMD) de 11 indicadores fisicoquímicos y microbiológicos empleados en la determinación del índice de calidad de suelos (ICS). Los mayores valores del ICS se obtuvieron en el BO (1.11) y SD (1.10), seguido del SC (1.07). Los resultados evidencian que las prácticas agrícolas implementadas en el páramo han afectado la calidad edáfica, lo cual es atribuido principalmente a menores contenidos de carbono (C) orgánico, humedad y actividad enzimática (catalasa) en el SC. Así mismo, a través de la guía diagnóstica en campo, se evidenciaron alteraciones en indicadores físicos como la resistencia al rompimiento, presencia de capas endurecidas y disminución en la velocidad de infiltración.","PeriodicalId":476429,"journal":{"name":"Acta Agronómica","volume":"136 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136364807","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-30DOI: 10.15446/acag.v71n3.97930
Solange Conceição Silva, Iara Brandão de Oliveira, Yvonilde Dantas Pinto Medeiros, Vital Pedro Da Silva Paz
This work evaluated the changes in physicochemical attributes in semiarid soil submitted to domestic sewage submitted to anaerobic treatment, in the presence or absence of the cultivar. The experimental unit was set up in the rural area of Ouro Verde, municipality of São Domingos, state of Bahia, Brazil. Five treatments were tested by diluting wastewater and supply in the percentages 0 %, 25 %, 50 %, 75 %, and 100 %. Soil samples were taken at depths of 0 - 35 cm (P1), and 35 - 70 cm (P2) from the sampling units with cultivar, control units without cultivar, and the unit without treatment (white). The cultivar was of corn (Zea mays L.), of the family Poaceae, which has a relatively short cycle (60 - 120 days). At the end of the experiments, after the harvest, the control units presented average Ca, P, K, and OM percentages from 5% to 66 % higher than white, while in the sample units, the percentages were 4% to 44 % higher, due to consumption by the cultivar. The contribution of TKN in the sampling units was the minimum sufficient for consumption by the cultivar. Compared to the control units, the sampling units presented Na, SAR, PST, and EC percentages higher by 35 - 113 % in P1, and by 29 – 456 % in P2, which indicates a higher consumption of cation by the cultivar in P2; change of ion distribution in the soil cation exchange site; as well as predisposition of the soil to sodification (increase of PST) and salinization (increase of EC). Consequently, the application of treated domestic effluents for agricultural activity, although it adds nutrients to the soil, has negative effects due to the increase in soil sodicity and salinity.
本研究评估了在存在或不存在该品种的情况下，半干旱土壤中生活污水经厌氧处理后理化属性的变化。该试验室设在巴西巴伊亚州多明戈斯市欧罗佛得州农村地区。分别以0%、25%、50%、75%、100%的比例对废水进行稀释和供水试验。土壤取样深度分别为0 ~ 35 cm (P1)和35 ~ 70 cm (P2)，分别为有栽培的取样单元、无栽培的对照单元和未处理的取样单元(白色)。该品种为禾本科玉米(Zea mays L.)，周期较短(60 ~ 120天)。在试验结束时，收获后，对照单位的Ca、P、K和OM的平均百分比比白色高出5%至66%，而在样品单位，由于品种的消耗，百分比高出4%至44%。TKN在采样单位中的贡献最小，足以供品种消耗。与对照单位相比，P1的Na、SAR、PST和EC的百分比分别高出35 ~ 113%和29 ~ 456%，表明该品种在P2中对阳离子的消耗较高;土壤阳离子交换部位离子分布的变化;以及土壤易于固化(PST增加)和盐碱化(EC增加)。因此，将处理过的家庭污水用于农业活动，虽然增加了土壤的养分，但由于土壤的碱度和盐度增加，产生了负面影响。
{"title":"Physicochemical changes of semiarid soil submitted to treated wastewater, with and without cultivar","authors":"Solange Conceição Silva, Iara Brandão de Oliveira, Yvonilde Dantas Pinto Medeiros, Vital Pedro Da Silva Paz","doi":"10.15446/acag.v71n3.97930","DOIUrl":"https://doi.org/10.15446/acag.v71n3.97930","url":null,"abstract":"This work evaluated the changes in physicochemical attributes in semiarid soil submitted to domestic sewage submitted to anaerobic treatment, in the presence or absence of the cultivar. The experimental unit was set up in the rural area of Ouro Verde, municipality of São Domingos, state of Bahia, Brazil. Five treatments were tested by diluting wastewater and supply in the percentages 0 %, 25 %, 50 %, 75 %, and 100 %. Soil samples were taken at depths of 0 - 35 cm (P1), and 35 - 70 cm (P2) from the sampling units with cultivar, control units without cultivar, and the unit without treatment (white). The cultivar was of corn (Zea mays L.), of the family Poaceae, which has a relatively short cycle (60 - 120 days). At the end of the experiments, after the harvest, the control units presented average Ca, P, K, and OM percentages from 5% to 66 % higher than white, while in the sample units, the percentages were 4% to 44 % higher, due to consumption by the cultivar. The contribution of TKN in the sampling units was the minimum sufficient for consumption by the cultivar. Compared to the control units, the sampling units presented Na, SAR, PST, and EC percentages higher by 35 - 113 % in P1, and by 29 – 456 % in P2, which indicates a higher consumption of cation by the cultivar in P2; change of ion distribution in the soil cation exchange site; as well as predisposition of the soil to sodification (increase of PST) and salinization (increase of EC). Consequently, the application of treated domestic effluents for agricultural activity, although it adds nutrients to the soil, has negative effects due to the increase in soil sodicity and salinity.","PeriodicalId":476429,"journal":{"name":"Acta Agronómica","volume":"211 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136364802","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-30DOI: 10.15446/acag.v71n3.106050
Diego Alonso Restrepo Molina, Maria Victoria Álvarez Henao, Benjamín Rojano, Andrés Felipe Alzate Arbeláez, Yudy Duarte-Correa
The commercialization of beef is an activity of great relevance for the department of Antioquia (Colombia), particularly in the Urabá region. The objective of this study was to evaluate the fat content, lipid composition, and some indicators of lipid oxidation and protein in beef from the Urabá region. 72 samples of beef cuts (loin and neck) of categories 3, 4 and 5 stars were analyzed. There were no statistical differences (p > 0.05) between the fat content of cuts from the neck (11.64 ± 7.25 %) and loin (10.49 ± 5.60 %), or in the amount of saturated, monounsaturated, and polyunsaturated fat. There was no difference between the samples evaluated for lipid oxidation (TBARS). The lowest protein oxidation (4.48 ± 0.21 nmol carbonyl compounds/mg protein) and peroxide values (2.71 ± 0.12 mEq oxygen/kg sample) coincided with the samples with the lowest total fat content. The results provide tools for establishing quality standards for meat from this region that will allow it to enter new markets in the future.
{"title":"Lipid profile and oxidative stability of beef cuts from Urabá (Antioquia, Colombia): A step towards global commercialization","authors":"Diego Alonso Restrepo Molina, Maria Victoria Álvarez Henao, Benjamín Rojano, Andrés Felipe Alzate Arbeláez, Yudy Duarte-Correa","doi":"10.15446/acag.v71n3.106050","DOIUrl":"https://doi.org/10.15446/acag.v71n3.106050","url":null,"abstract":"The commercialization of beef is an activity of great relevance for the department of Antioquia (Colombia), particularly in the Urabá region. The objective of this study was to evaluate the fat content, lipid composition, and some indicators of lipid oxidation and protein in beef from the Urabá region. 72 samples of beef cuts (loin and neck) of categories 3, 4 and 5 stars were analyzed. There were no statistical differences (p > 0.05) between the fat content of cuts from the neck (11.64 ± 7.25 %) and loin (10.49 ± 5.60 %), or in the amount of saturated, monounsaturated, and polyunsaturated fat. There was no difference between the samples evaluated for lipid oxidation (TBARS). The lowest protein oxidation (4.48 ± 0.21 nmol carbonyl compounds/mg protein) and peroxide values (2.71 ± 0.12 mEq oxygen/kg sample) coincided with the samples with the lowest total fat content. The results provide tools for establishing quality standards for meat from this region that will allow it to enter new markets in the future.","PeriodicalId":476429,"journal":{"name":"Acta Agronómica","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136364808","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-30DOI: 10.15446/acag.v71n3.101041
Ana Maria Arboleda Arango, Julio C. Alonso, Carlos A. Arce-Lopera
Consumers’ sensory evaluation of fruits to determine the expected quality is a frequent practice. However, consumers’ assessment of fruit quality is an ambiguous concept. This research aimed to determine the preferred fruit image when consumers decide that it is ready to eat, or it is too old. This within-subjects experimental design was conducted through an online survey using four fruits: avocado, banana, lulo, and guava. The questionnaire used a two-alternative forced-choice method: From a pair of fruit images, participants chose which one they preferred to eat, and which was too old. The results showed that participants do not always agree on the fruit image they find to be ready to eat, whereas the results for assessing an old fruit mimic the fruit maturity condition. Thus, food quality standards should use sensory evaluations that assess ideas that matter to the consumer. The value of this research is to provide a methodological approach to evaluate the consumers’ expectations, which will be helpful within agricultural processes and the distribution chain.
{"title":"Does this fruit look appetizing? Psychometric modeling of fruit consumption preferences","authors":"Ana Maria Arboleda Arango, Julio C. Alonso, Carlos A. Arce-Lopera","doi":"10.15446/acag.v71n3.101041","DOIUrl":"https://doi.org/10.15446/acag.v71n3.101041","url":null,"abstract":"Consumers’ sensory evaluation of fruits to determine the expected quality is a frequent practice. However, consumers’ assessment of fruit quality is an ambiguous concept. This research aimed to determine the preferred fruit image when consumers decide that it is ready to eat, or it is too old. This within-subjects experimental design was conducted through an online survey using four fruits: avocado, banana, lulo, and guava. The questionnaire used a two-alternative forced-choice method: From a pair of fruit images, participants chose which one they preferred to eat, and which was too old. The results showed that participants do not always agree on the fruit image they find to be ready to eat, whereas the results for assessing an old fruit mimic the fruit maturity condition. Thus, food quality standards should use sensory evaluations that assess ideas that matter to the consumer. The value of this research is to provide a methodological approach to evaluate the consumers’ expectations, which will be helpful within agricultural processes and the distribution chain.","PeriodicalId":476429,"journal":{"name":"Acta Agronómica","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136364937","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-30DOI: 10.15446/acag.v71n3.86955
Raquel Santos Da Silva, Michael Ruan Nunes De Lima, Matheus Moreira Dantas Pinto, Juliana Simões Nobre Gama
Jambu (Acmella oleracea [(L.) RK Jansen]) is a vegetable of great importance in the Amazonian region; it can be found in the daily life of the citizens of the State of Pará (Brazil), since it is part of traditional dishes such as duck in tucupi and tacacá sauce. Although jambu is widely cultivated, agronomic information about its management remains scarce. The aim of the current study was to analyze the physiological potential of jambu seeds stored in different packages and environments. The investigated packages comprised glass, Eppendorf tubes, plastic bags and paper bags conditioned in refrigerator and under natural conditions in Castanhal, Pará, for 360 days. Seed germination, first germination count, emergence seedlings, germination and emergence speed index, and seedling dry weight and length were the variables evaluated at 40-day intervals. The experimental design was completely randomized, with four replicates of 50 seeds per treatment. Jambu seeds were only influenced by the environment where they were stored; the ones stored under natural conditions recorded decreasing behavior for the investigated variables until they reached zero, after 280 storage days. It was possible to conclude that the physiological potential of jambu seeds stored in refrigerator was better conserved.
{"title":"Physiological quality of jambu (Acmella oleracea) seeds stored in different environments and packages","authors":"Raquel Santos Da Silva, Michael Ruan Nunes De Lima, Matheus Moreira Dantas Pinto, Juliana Simões Nobre Gama","doi":"10.15446/acag.v71n3.86955","DOIUrl":"https://doi.org/10.15446/acag.v71n3.86955","url":null,"abstract":"Jambu (Acmella oleracea [(L.) RK Jansen]) is a vegetable of great importance in the Amazonian region; it can be found in the daily life of the citizens of the State of Pará (Brazil), since it is part of traditional dishes such as duck in tucupi and tacacá sauce. Although jambu is widely cultivated, agronomic information about its management remains scarce. The aim of the current study was to analyze the physiological potential of jambu seeds stored in different packages and environments. The investigated packages comprised glass, Eppendorf tubes, plastic bags and paper bags conditioned in refrigerator and under natural conditions in Castanhal, Pará, for 360 days. Seed germination, first germination count, emergence seedlings, germination and emergence speed index, and seedling dry weight and length were the variables evaluated at 40-day intervals. The experimental design was completely randomized, with four replicates of 50 seeds per treatment. Jambu seeds were only influenced by the environment where they were stored; the ones stored under natural conditions recorded decreasing behavior for the investigated variables until they reached zero, after 280 storage days. It was possible to conclude that the physiological potential of jambu seeds stored in refrigerator was better conserved.","PeriodicalId":476429,"journal":{"name":"Acta Agronómica","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136364493","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-30DOI: 10.15446/acag.v71n3.105815
Daiana Yael Daga, Nahuel David Sequeira, Patricia Vazquez
La expansión e intensificación de los sistemas hortícolas del periurbano marplatense derivó en beneficios económicos, pero también en problemas ambientales. Se hipotetiza que el manejo de estos sistemas bajo un enfoque convencional condujo a sistemas menos sustentables respecto de aquellos alternativos, lo que profundizó los impactos ambientales por la incorporación del invernáculo. Consecuentemente, el objetivo de este estudio fue evaluar la sustentabilidad ambiental de sistemas hortícolas marplatenses en diferentes casos correspondientes a tipologías representativas del cinturón verde. Metodológicamente, se construyó un Índice de Sustentabilidad Ambiental Hortícola, constituido por indicadores asociados a las dimensiones ecológica, social y económica de la sustentabilidad. Partiendo de entrevistas semiestructuradas, el índice se aplicó a 7 sistemas con enfoque convencional y producción bajo cubierta (SCBC), 7 sistemas con enfoque convencional y producción a campo (SCAC), 3 sistemas con enfoques alternativos y producción bajo cubierta (SABC) y otros 3 sistemas con enfoques alternativos y producción a campo (SAAC). Los sistemas que aplican enfoques alternativos (SABC y SAAC) evidenciaron una mayor sustentabilidad ambiental, con lo que se observó una amplia brecha entre estos y los sistemas convencionales (SCBC y SCAC). Finalmente, se hace necesario profundizar el estudio y destacar el aporte que cada sistema puede hacer a la sustentabilidad ambiental de la producción hortícola.
{"title":"Evaluación de la sustentabilidad ambiental de sistemas hortícolas del periurbano de Mar del Plata, Buenos Aires, Argentina","authors":"Daiana Yael Daga, Nahuel David Sequeira, Patricia Vazquez","doi":"10.15446/acag.v71n3.105815","DOIUrl":"https://doi.org/10.15446/acag.v71n3.105815","url":null,"abstract":"La expansión e intensificación de los sistemas hortícolas del periurbano marplatense derivó en beneficios económicos, pero también en problemas ambientales. Se hipotetiza que el manejo de estos sistemas bajo un enfoque convencional condujo a sistemas menos sustentables respecto de aquellos alternativos, lo que profundizó los impactos ambientales por la incorporación del invernáculo. Consecuentemente, el objetivo de este estudio fue evaluar la sustentabilidad ambiental de sistemas hortícolas marplatenses en diferentes casos correspondientes a tipologías representativas del cinturón verde. Metodológicamente, se construyó un Índice de Sustentabilidad Ambiental Hortícola, constituido por indicadores asociados a las dimensiones ecológica, social y económica de la sustentabilidad. Partiendo de entrevistas semiestructuradas, el índice se aplicó a 7 sistemas con enfoque convencional y producción bajo cubierta (SCBC), 7 sistemas con enfoque convencional y producción a campo (SCAC), 3 sistemas con enfoques alternativos y producción bajo cubierta (SABC) y otros 3 sistemas con enfoques alternativos y producción a campo (SAAC). Los sistemas que aplican enfoques alternativos (SABC y SAAC) evidenciaron una mayor sustentabilidad ambiental, con lo que se observó una amplia brecha entre estos y los sistemas convencionales (SCBC y SCAC). Finalmente, se hace necesario profundizar el estudio y destacar el aporte que cada sistema puede hacer a la sustentabilidad ambiental de la producción hortícola.","PeriodicalId":476429,"journal":{"name":"Acta Agronómica","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136364803","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-30DOI: 10.15446/acag.v71n3.93941
Gustavo Soares de Souza, Cássio Carlette Thiengo, Samuel de Assis Silva, Edinei José Armani Borghi
The objective of this study was to evaluate the physical-hydrological and chemical properties and organic carbon stock of soil under intercropped conilon coffee (Coffea canephora P.) and in full sun in the coastal tablelands of Espírito Santo, Brazil. The treatments evaluated were coffee intercropped with rubber tree (CR) and in full sun (FS) in the area 1; coffee intercropped with papaya (CP) and in full sun (FS) in the area 2; coffee intercropped with coconut (CC), in full sun (FS), and an area of native vegetation (NV) in the area 3. The physical and chemical properties of the soil and its organic carbon stocks were measured in layers of 0-0.4 m. In area 1, CR showed lower soil bulk density and temperature, and higher total porosity and macroporosity. In area 2, CP presented higher available water capacity and soil water content, better soil fertility, and lower soil temperature. In area 3, CC presented higher total porosity, available water capacity, and soil organic carbon stock. NV presented physical and chemical properties of soil that limit the agricultural development of the crops. Conilon coffee plantations can improve the physical-hydrological and chemical quality of soil compared to cultivation in full sun and native vegetation in the coastal tablelands, which varies according to the intercropped culture.
{"title":"Improvement of the soil quality under intercropped conilon coffee (Coffea canephora P.) in the coastal tablelands of Southeast Brazil","authors":"Gustavo Soares de Souza, Cássio Carlette Thiengo, Samuel de Assis Silva, Edinei José Armani Borghi","doi":"10.15446/acag.v71n3.93941","DOIUrl":"https://doi.org/10.15446/acag.v71n3.93941","url":null,"abstract":"The objective of this study was to evaluate the physical-hydrological and chemical properties and organic carbon stock of soil under intercropped conilon coffee (Coffea canephora P.) and in full sun in the coastal tablelands of Espírito Santo, Brazil. The treatments evaluated were coffee intercropped with rubber tree (CR) and in full sun (FS) in the area 1; coffee intercropped with papaya (CP) and in full sun (FS) in the area 2; coffee intercropped with coconut (CC), in full sun (FS), and an area of native vegetation (NV) in the area 3. The physical and chemical properties of the soil and its organic carbon stocks were measured in layers of 0-0.4 m. In area 1, CR showed lower soil bulk density and temperature, and higher total porosity and macroporosity. In area 2, CP presented higher available water capacity and soil water content, better soil fertility, and lower soil temperature. In area 3, CC presented higher total porosity, available water capacity, and soil organic carbon stock. NV presented physical and chemical properties of soil that limit the agricultural development of the crops. Conilon coffee plantations can improve the physical-hydrological and chemical quality of soil compared to cultivation in full sun and native vegetation in the coastal tablelands, which varies according to the intercropped culture.","PeriodicalId":476429,"journal":{"name":"Acta Agronómica","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136364799","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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