<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>0034-7418</journal-id>
<journal-title><![CDATA[Revista Colombiana de Ciencias Químico - Farmacéuticas]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. colomb. cienc. quim. farm.]]></abbrev-journal-title>
<issn>0034-7418</issn>
<publisher>
<publisher-name><![CDATA[Departamento de Farmácia, Facultad de Ciencias, Universidade Nacional da Colombia]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0034-74182022000100007</article-id>
<article-id pub-id-type="doi">10.15446/rcciquifa.v51n1.10260</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Extraction and quantification of oxalic acid in leaves of plant species used in the treatment of chronic non-communicable diseases]]></article-title>
<article-title xml:lang="en"><![CDATA[Extracción y cuantificación de ácido oxálico en hojas de especies vegetales utilizadas en el tratamiento de enfermedades crónicas no transmisibles]]></article-title>
<article-title xml:lang="pt"><![CDATA[Extração e quantificação de ácido oxálico em folhas de espécies vegetais utilizadas no tratamento de doenças crônicas nã transmissíveis]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[de Caldas Brandão Filho]]></surname>
<given-names><![CDATA[José Odimar]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Martins Barbosa Filho]]></surname>
<given-names><![CDATA[José Pedro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Damasceno Sá]]></surname>
<given-names><![CDATA[Rafaela]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Perrelli Randau]]></surname>
<given-names><![CDATA[Karina]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidade Federal de Pernambuco  ]]></institution>
<addr-line><![CDATA[Recife-PE ]]></addr-line>
<country>Brazil</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidade Federal de Pernambuco  ]]></institution>
<addr-line><![CDATA[Recife-PE ]]></addr-line>
<country>Brazil</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>04</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>04</month>
<year>2022</year>
</pub-date>
<volume>51</volume>
<numero>1</numero>
<fpage>7</fpage>
<lpage>25</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0034-74182022000100007&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0034-74182022000100007&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0034-74182022000100007&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN  Introducción: Las enfermedades crónicas no transmisibles (ECNT) tienen las tasas de mortalidad y morbilidad más altas del mundo. El uso de plantas medicinales en la terapia de estas enfermedades es una realidad muy extendida. Sin embargo, la mayoría de las especies vegetales contienen cristales de oxalato cálcico, producto del metabolismo vegetal y su ingesta se correlaciona con la aparición de problemas renales como la litiasis urinaria, especialmente en personas predispuestas a estas afecciones.  Objetivo: Determinar la cantidad de ácido oxálico en especies vegetales que se utilizan en el tratamiento de las ECNT.  Metodología: Se obtuvieron extractos acuosos y ácidos de 0,5 g del fármaco vegetal de la especie y, posteriormente, se tituló con una solución estandarizada de permanganato de potasio 0,02 mol.L-1con las concentraciones de ácido oxálico expresadas en g/100g de fármaco vegetal seco.  Resultados: La concentración de ácido oxálico osciló entre 4,58 ± 0,09 g/100 g a 17,21 ± 0,07 g/100 g en especies de plantas y la extracción de ácido fue más eficiente. Se realizó una optimización metodológica para las especies que presentaron los mejores resultados, Psidiumguajava y Artocarpus heterophyllus.  Conclusión: Los datos obtenidos pueden servir de base para decisiones médicas y para profesionales que prescriben plantas medicinales.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[SUMMARY  Introduction: Chronic non-communicable diseases (CNCDs) are a group of diseases characterized by having the highest mortality and morbidity rates in the world. Despite the increase in new drug technologies, the use of medicinal plants as an aid in therapy for these diseases is a widespread reality. However, most plant species contain inorganic crystals of calcium oxalate, a product of plant metabolism, which has several functions in plant tissues. For the human species, its ingestion is associated with the arising of kidney problems such as urinary lithiasis, especially in people who have a predisposition to these conditions.  Aim: To determine the amount of oxalic acid in plant species, which are used in the treatment of CNCDs.  Methodology: After collection and characterization the plant species, aqueous and acidic extracts were obtained from 0.5 g of the plant drug of each species and, subsequently, were titrated with a standardized 0.02 mol.L-1 potassium permanganate solution and the concentrations of oxalic acid were expressed in g/100 g of dry vegetable drug.  Result: The data obtained from the concentration of oxalic acid ranged from 4.58 ± 0.09 g/100 g to 17.21 ± 0.07 g/100 g and demonstrated that the concentrations from acid extraction are higher compared to the aqueous extraction, for all vegetables species analyzed. Methodological optimization was performed for the species that showed the highest results, Psidium guajava and Artocarpus hetero phyllus.  Conclusion: The data obtained can serve as input for medical decisions and for professionals who prescribe medicinal plants.]]></p></abstract>
<abstract abstract-type="short" xml:lang="pt"><p><![CDATA[RESUMO  Introdução: As doenças crônicas não transmissíveis (DCNT) são um grupo de doenças caracterizadas por apresentar as maiores taxas de mortalidade e morbidade do mundo. Apesar do aumento de novas tecnologias medicamentosas, o uso de plantas medicinais como auxiliar na terapia dessas doenças é uma realidade bastante difundida. No entanto, a maioria das espécies vegetais contém cristais inorgânicos de oxalato de cálcio, um produto do metabolismo vegetal, que possui diversas funções nos tecidos vegetais. Para a espécie humana, sua ingestão está associada ao surgimento de problemas renais como a litíase urinária, principalmente em pessoas com predisposição a essas condições.  Objetivo: Determinar a quantidade de ácido oxálico em espécies vegetais, que são utilizadas no tratamento de DCNT.  Metodologia: Após a coleta e caracterização das espécies vegetais, extratos aquosos e ácidos foram obtidos a partir de 0,5 g da droga vegetal de cada espécie e, posteriormente, titulados com solução padronizada de permanganato de potássio 0,02 mol.L-1 e as concentrações de ácido oxálico foram expressos em g/100 g de fármaco vegetal seco.  Resultado: Os dados obtidos da concentração de ácido oxálico variaram de 4,58 ± 0,09 g/100 g a 17,21 ± 0,07 g/100 g e demonstraram que as concentrações da extração ácida são maiores em relação à extração aquosa, para todas as espécies vegetais analisadas. A otimização metodológica foi realizada para as espécies que apresentaram os maiores resultados, Psidiumguajava e Artocarpus heterophyllus.  Conclusão: Os dados obtidos podem servir de subsídio para decisões médicas e para profissionais que prescrevem plantas medicinais.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Calcium oxalate]]></kwd>
<kwd lng="en"><![CDATA[urinary lithiasis]]></kwd>
<kwd lng="en"><![CDATA[plantspecies]]></kwd>
<kwd lng="es"><![CDATA[Oxalato de calcio]]></kwd>
<kwd lng="es"><![CDATA[litiasis urinaria]]></kwd>
<kwd lng="es"><![CDATA[vegetales especies]]></kwd>
<kwd lng="pt"><![CDATA[Oxalato de cálcio]]></kwd>
<kwd lng="pt"><![CDATA[litíase urinária]]></kwd>
<kwd lng="pt"><![CDATA[espécies vegetais]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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