Pub Date : 2023-01-01DOI: 10.15446/rfnam.v76n1.101008
Ezequiel Espinosa-Grande, Alberto Santillán-Fernández, Bruno Manuel Chávez-Vergara, Arely Anayansi Vargas-Díaz, Alfredo Esteban Tadeo-Noble, Jaime Bautista-Ortega
Brosimum alicastrum is a forest species of broad natural distribution in southeastern Mexico, with high potential for animal and human diets, although with incipient forest management. The objective of this study was to analyze the spatial-temporal evolution of basic and applied research where B. alicastrum was the object of study; through a bibliometric analysis of the texts available in the main editorial houses; to identify research areas that are not developed. In 308 texts found from 1883 to 2020, spatial-temporal evolution showed an exponential growth that concentrated the highest productivity from 2002 to 2020 (222 texts) in countries of the Americas. For the case of Mexico, it was found that the research was focused the southeast, which coincides with the natural distribution of the species. However, this research had a low impact (measured by the number of bibliographic citations) as a result of the publication in journals edited in Spanish, while impact journals are led by English-speaking countries, in English. Therefore, the research about B. alicastrum in Latin America has a broad margin of improvement through the publication of texts in English and in journals of greater impact, through the development of research areas that have been slightly explored such as silviculture of the species with special emphasis on its propagation, management in nursery, and forest plantations, which can contribute to food security in each country by ensuring the prime material of an emerging food agro-industry.
{"title":"Space-time analysis of scientific research on Brosimum alicastrum Swartz","authors":"Ezequiel Espinosa-Grande, Alberto Santillán-Fernández, Bruno Manuel Chávez-Vergara, Arely Anayansi Vargas-Díaz, Alfredo Esteban Tadeo-Noble, Jaime Bautista-Ortega","doi":"10.15446/rfnam.v76n1.101008","DOIUrl":"https://doi.org/10.15446/rfnam.v76n1.101008","url":null,"abstract":"Brosimum alicastrum is a forest species of broad natural distribution in southeastern Mexico, with high potential for animal and human diets, although with incipient forest management. The objective of this study was to analyze the spatial-temporal evolution of basic and applied research where B. alicastrum was the object of study; through a bibliometric analysis of the texts available in the main editorial houses; to identify research areas that are not developed. In 308 texts found from 1883 to 2020, spatial-temporal evolution showed an exponential growth that concentrated the highest productivity from 2002 to 2020 (222 texts) in countries of the Americas. For the case of Mexico, it was found that the research was focused the southeast, which coincides with the natural distribution of the species. However, this research had a low impact (measured by the number of bibliographic citations) as a result of the publication in journals edited in Spanish, while impact journals are led by English-speaking countries, in English. Therefore, the research about B. alicastrum in Latin America has a broad margin of improvement through the publication of texts in English and in journals of greater impact, through the development of research areas that have been slightly explored such as silviculture of the species with special emphasis on its propagation, management in nursery, and forest plantations, which can contribute to food security in each country by ensuring the prime material of an emerging food agro-industry.","PeriodicalId":21444,"journal":{"name":"Revista Facultad Nacional de Agronomía","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135798243","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 : 2023-01-01DOI: 10.15446/rfnam.v76n1.102472
Julieta Strada, Cecilia Bruno, Mirtha María Nassetta, Monica Balzarini, Martha Yolanda Conles, Dante Rojas, Alejandra P. Ricca, Diego Cristos, Maria José Martinez
During storage, soybean kernels can be attacked by insects, which are preventively controlled with insecticides. Information on the dissipation of insecticide residues is crucial to know their final concentrations in food and establish the waiting periods necessary for consumption without health risks, and to determine the minimum waiting period necessary to comply with national and international standards. The aims of this study were to quantify the residue levels of organophosphorus insecticides (dichlorvos, chlorpyrifos-methyl and pirimiphos-methyl) in stored soybean, establish the effect during the storage period, and model the dissipation dynamics. Insecticide residues in soybeans were analyzed at 2, 30, 60, 90 and 120 days after application. An analytical method based on QuEChERS extraction followed by gas chromatography mass spectrometry (GC-MS/MS) determination was validated, with mean recoveries of 82-105%, depending on the spiking levels. Residues decreased below 80% of the initial concentration at 60 days after application and below quantifiable levels at 120 days. Residues followed a pseudo-first-order dissipation dynamics [Ct = C0×exp(-k.t)], with the dissipation constant (k) and half-lives being 0.538 and 1.3 days for dichlorvos, 0.018 and 38.8 days for chlorpyrifos-methyl, and 0.023 and 30.1 days for pirimiphos-methyl, respectively. These results allow concluding that, at the recommended dosage, these insecticides are safe for use on soybean grains stored under standard conditions commonly nowadays used in Argentina.
{"title":"Degradation dynamics of organophosphorus insecticides applied in stored soybean (Glycine max L.) during supervised trials.","authors":"Julieta Strada, Cecilia Bruno, Mirtha María Nassetta, Monica Balzarini, Martha Yolanda Conles, Dante Rojas, Alejandra P. Ricca, Diego Cristos, Maria José Martinez","doi":"10.15446/rfnam.v76n1.102472","DOIUrl":"https://doi.org/10.15446/rfnam.v76n1.102472","url":null,"abstract":"During storage, soybean kernels can be attacked by insects, which are preventively controlled with insecticides. Information on the dissipation of insecticide residues is crucial to know their final concentrations in food and establish the waiting periods necessary for consumption without health risks, and to determine the minimum waiting period necessary to comply with national and international standards. The aims of this study were to quantify the residue levels of organophosphorus insecticides (dichlorvos, chlorpyrifos-methyl and pirimiphos-methyl) in stored soybean, establish the effect during the storage period, and model the dissipation dynamics. Insecticide residues in soybeans were analyzed at 2, 30, 60, 90 and 120 days after application. An analytical method based on QuEChERS extraction followed by gas chromatography mass spectrometry (GC-MS/MS) determination was validated, with mean recoveries of 82-105%, depending on the spiking levels. Residues decreased below 80% of the initial concentration at 60 days after application and below quantifiable levels at 120 days. Residues followed a pseudo-first-order dissipation dynamics [Ct = C0×exp(-k.t)], with the dissipation constant (k) and half-lives being 0.538 and 1.3 days for dichlorvos, 0.018 and 38.8 days for chlorpyrifos-methyl, and 0.023 and 30.1 days for pirimiphos-methyl, respectively. These results allow concluding that, at the recommended dosage, these insecticides are safe for use on soybean grains stored under standard conditions commonly nowadays used in Argentina.","PeriodicalId":21444,"journal":{"name":"Revista Facultad Nacional de Agronomía","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135798252","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}
Microbial bioprospecting is the study and classification of microorganisms with industrial value. Different researches word wide are focusing on the study of natural molecules that can be used for medicine, agriculture and the environment, among others. In Colombia, marine bioprospecting has become highly relevant. Also, different universities and institutes are working on the study of the biodiversity and its applications. The aim of this review was to compilate the most important laws and decrees related with the use of the resources with commercial purposes. Also, the elucidation of the current state of bioprospecting in Colombia and the principal applications of microorganisms in the food production chain. The special focus of this review is to show the potential use of bioprospection on agricultural development of the country in order to change the conventional practices to eco-friendly process in food production. Also, this review proposes the bioprospecting of lactic acid bacteria as an alternative to use their biomass and metabolites for food preservation.
{"title":"Bioprospecting in food production: an approximation of the current state in Colombia","authors":"Claudia Cubides, Carolina Gutiérrez Cortés, Hector Suarez","doi":"10.15446/rfnam.v76n1.101705","DOIUrl":"https://doi.org/10.15446/rfnam.v76n1.101705","url":null,"abstract":"Microbial bioprospecting is the study and classification of microorganisms with industrial value. Different researches word wide are focusing on the study of natural molecules that can be used for medicine, agriculture and the environment, among others. In Colombia, marine bioprospecting has become highly relevant. Also, different universities and institutes are working on the study of the biodiversity and its applications. The aim of this review was to compilate the most important laws and decrees related with the use of the resources with commercial purposes. Also, the elucidation of the current state of bioprospecting in Colombia and the principal applications of microorganisms in the food production chain. The special focus of this review is to show the potential use of bioprospection on agricultural development of the country in order to change the conventional practices to eco-friendly process in food production. Also, this review proposes the bioprospecting of lactic acid bacteria as an alternative to use their biomass and metabolites for food preservation.","PeriodicalId":21444,"journal":{"name":"Revista Facultad Nacional de Agronomía","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135798244","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 : 2023-01-01DOI: 10.15446/rfnam.v76n1.100842
Olushola E Owolabi, Oladipo O Olaniyi, Felix A Akinyosoye
Aspergillus flavus isolated from fermented millet flour produced a crude enzyme, which was purified via ammonium sulphate precipitation and subsequent chromatographic techniques. The biochemical characteristics of the purified amylase were thereafter investigated showing activity in a wide range of pH and temperature, with optimal conditions of pH 6.0 and 50 °C. The enzyme retained even 89% of its activity after 1 h at 50 °C and 2 h at pH 6.0. The purified enzyme was stimulated by Ca2+, Zn2+ and Co2+, while Hg2+ and EDTA caused mild inhibition of α-amylase activity. The kinetic indices (Km and Vmax) and molecular weight of the enzyme were estimated in 1.71 mg mL-1, 2.133 μmol min-1 mL-1 and 45 kDa respectively. The catalytic properties of α-amylase from A. flavus makes it a promising candidate for use in various starch processing industries.
{"title":"Catalytic properties of purified alpha amylase from Aspergillus flavus cultivated on low-cost agricultural substrate","authors":"Olushola E Owolabi, Oladipo O Olaniyi, Felix A Akinyosoye","doi":"10.15446/rfnam.v76n1.100842","DOIUrl":"https://doi.org/10.15446/rfnam.v76n1.100842","url":null,"abstract":"Aspergillus flavus isolated from fermented millet flour produced a crude enzyme, which was purified via ammonium sulphate precipitation and subsequent chromatographic techniques. The biochemical characteristics of the purified amylase were thereafter investigated showing activity in a wide range of pH and temperature, with optimal conditions of pH 6.0 and 50 °C. The enzyme retained even 89% of its activity after 1 h at 50 °C and 2 h at pH 6.0. The purified enzyme was stimulated by Ca2+, Zn2+ and Co2+, while Hg2+ and EDTA caused mild inhibition of α-amylase activity. The kinetic indices (Km and Vmax) and molecular weight of the enzyme were estimated in 1.71 mg mL-1, 2.133 μmol min-1 mL-1 and 45 kDa respectively. The catalytic properties of α-amylase from A. flavus makes it a promising candidate for use in various starch processing industries.","PeriodicalId":21444,"journal":{"name":"Revista Facultad Nacional de Agronomía","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135798257","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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