<?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>0188-4999</journal-id>
<journal-title><![CDATA[Revista internacional de contaminación ambiental]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. Int. Contam. Ambient]]></abbrev-journal-title>
<issn>0188-4999</issn>
<publisher>
<publisher-name><![CDATA[Universidad Nacional Autónoma de México, Instituto de Ciencias de la Atmósfera y Cambio Climático]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0188-49992016000300303</article-id>
<article-id pub-id-type="doi">10.20937/RICA.2016.32.03.05</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Evaluación y caracterización de grasas y aceites residuales de cocina para la producción de biodiésel: un caso de estudio]]></article-title>
<article-title xml:lang="en"><![CDATA[Evaluation and characterization of cooking oils and fats for biodiesel production: A case study]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Tacias Pascacio]]></surname>
<given-names><![CDATA[Veymar Guadalupe]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rosales Quintero]]></surname>
<given-names><![CDATA[Arnulfo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Torrestiana Sánchez]]></surname>
<given-names><![CDATA[Beatriz]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Tecnológico de Veracruz Unidad de Investigación y Desarrollo en Alimentos ]]></institution>
<addr-line><![CDATA[Veracruz Veracruz]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Instituto Tecnológico de Tuxtla Gutiérrez  ]]></institution>
<addr-line><![CDATA[Tuxtla Gutiérrez Chiapas]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>08</month>
<year>2016</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>08</month>
<year>2016</year>
</pub-date>
<volume>32</volume>
<numero>3</numero>
<fpage>303</fpage>
<lpage>313</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0188-49992016000300303&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0188-49992016000300303&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0188-49992016000300303&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN: Se evaluó de forma sistemática la cantidad de grasas y aceites (GAR) generada por la industria restaurantera en la ciudad de Tuxtla Gutiérrez, Chiapas. Los resultados indicaron que en la ciudad se producen en promedio 174 t de GAR por año provenientes de ocho tipos de restaurantes en la siguiente proporción: 41 % restaurantes formales, 24 % comida rápida, 8 % taquerías, 7 % antojitos, 6 % cocinas económicas, 6 % bares, 4 % gorditas y 4 % rosticerías. Además, muestras representativas de GAR provenientes de cada tipo de restaurante fueron caracterizadas para la producción de biodiésel en términos de viscosidad, estabilidad oxidativa, contenido de ácidos grasos libres (AGL), índice de acidez (IA), índice de saponificación, contenido de humedad y composición de ácidos grasos. El análisis fisico y químico indicó que todas, excepto las GAAR generadas por restaurantes de comida rápida, cumplen con los niveles de AGL e IA, recomendados para la transesterificación alcalina. Considerando la población de la ciudad, se estimó un promedio de producción de GAR de 0.31 t/año por cada 1000 habitantes. Un análisis basado en estas cifras sugiere que en México se podrían obtener 34.9 kt de biodiésel/año y evitar la emisión de 92 kt de CO2/ año, reduciendo así la contaminación en el país.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT: The waste cooking oils and fats (WCOF) from the catering industry were systematical-ly evaluated in Tuxtla Gutierrez, Chiapas. Results pointed out that the eight restaurant types found in the city produced 174 t of WCOF/year in the following proportion: 41 % formal restaurant, 24 % fast food, 8 % taquerias, 7 % antojitos, 6 % soup kitchens, 6 % bars, 4 % gorditas and 4 % roast chicken shops. In addition, representative samples of WCOF coming from every restaurant type were characterized for bio-diesel production, in terms of viscosity, oxidative stability, free fatty acid content, acid value, saponification number, moisture content and fatty acid composition. The physicochemical analysis suggests that all the WCOF produced in the city, except that coming from the fast food cooking, met the recommended free fatty acid levels and the acidity values for alkaline transesterification. Based on the population of the city an average production of 0.31 t/year of WCOF per 1000 inhabitants was estimated. Projecting this figure to the whole country of Mexico, 34.9 kt of this fuel would be obtained per year, which would avoid the emission of 92 kt/year of CO2 and contribute to reduce pollution in the country.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[contaminación]]></kwd>
<kwd lng="es"><![CDATA[residuos]]></kwd>
<kwd lng="es"><![CDATA[aprovechamiento]]></kwd>
<kwd lng="es"><![CDATA[biocombustibles]]></kwd>
<kwd lng="es"><![CDATA[diésel]]></kwd>
<kwd lng="en"><![CDATA[pollution]]></kwd>
<kwd lng="en"><![CDATA[waste]]></kwd>
<kwd lng="en"><![CDATA[exploitation]]></kwd>
<kwd lng="en"><![CDATA[biofuel]]></kwd>
<kwd lng="en"><![CDATA[diésel]]></kwd>
</kwd-group>
</article-meta>
</front><back>
<ref-list>
<ref id="B1">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[Current biodiesel production technologies: A comparative review]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Abbaszaadeh]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Ghobadian]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
<name>
<surname><![CDATA[Omidkhah]]></surname>
<given-names><![CDATA[M. R]]></given-names>
</name>
<name>
<surname><![CDATA[Najafi]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
</person-group>
<source><![CDATA[Energ. Convers. Manage]]></source>
<year>2012</year>
<volume>63</volume>
<page-range>138-48</page-range></nlm-citation>
</ref>
<ref id="B2">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[Residual animal fat and fish for biodiesel production. Potentials in Norway]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Andersen]]></surname>
<given-names><![CDATA[O.]]></given-names>
</name>
<name>
<surname><![CDATA[Weinbach]]></surname>
<given-names><![CDATA[J.E.]]></given-names>
</name>
</person-group>
<source><![CDATA[Biomass Bioenerg.]]></source>
<year>2010</year>
<volume>34</volume>
<page-range>1183-8</page-range></nlm-citation>
</ref>
<ref id="B3">
<nlm-citation citation-type="book">
<collab>AOAC</collab>
<source><![CDATA[926.12 Moisture and volatile matter. Official Methods of Analysis]]></source>
<year>1990</year>
<publisher-loc><![CDATA[Washington, DC, EUA ]]></publisher-loc>
<publisher-name><![CDATA[Association of Official Analytical Chemists Inc.]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B4">
<nlm-citation citation-type="book">
<collab>AOAC</collab>
<source><![CDATA[926.160 Saponification number (Koett-storfer Number) of oils and fats. Official Methods of Analysis]]></source>
<year>1990</year>
<publisher-loc><![CDATA[Washington, DC, EUA ]]></publisher-loc>
<publisher-name><![CDATA[Association of Official Analytical Chemists, INC.]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B5">
<nlm-citation citation-type="book">
<collab>AOAC</collab>
<source><![CDATA[940.28 Fatty acids (free) in crude and refined oils. Official Methods of Analysis]]></source>
<year>1990</year>
<publisher-loc><![CDATA[Washington, DC, EUA ]]></publisher-loc>
<publisher-name><![CDATA[Association of Official Analytical Chemists, Inc.]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B6">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[The potential of restaurant waste lipids as biodiesel feedstocks]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Canakci]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
</person-group>
<source><![CDATA[Biores. Technol.]]></source>
<year>2007</year>
<volume>98</volume>
<page-range>183-90</page-range></nlm-citation>
</ref>
<ref id="B7">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[Characteriza-tion of residual oils for biodiesel production]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Canesin]]></surname>
<given-names><![CDATA[E. A.]]></given-names>
</name>
<name>
<surname><![CDATA[de Oliveira]]></surname>
<given-names><![CDATA[C. C.]]></given-names>
</name>
<name>
<surname><![CDATA[Matsushita]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Dias]]></surname>
<given-names><![CDATA[L. F.]]></given-names>
</name>
<name>
<surname><![CDATA[Pedrao]]></surname>
<given-names><![CDATA[M. R.]]></given-names>
</name>
<name>
<surname><![CDATA[de Souza]]></surname>
<given-names><![CDATA[N. E.]]></given-names>
</name>
</person-group>
<source><![CDATA[Electro. J. Biotechn.]]></source>
<year>2014</year>
<volume>17</volume>
<page-range>39-45</page-range></nlm-citation>
</ref>
<ref id="B8">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[Effect of membrane pore size on the performance of a membrane reactor for biodiesel production]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Cao]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<name>
<surname><![CDATA[Tremblay]]></surname>
<given-names><![CDATA[A. Y.]]></given-names>
</name>
<name>
<surname><![CDATA[Dubé]]></surname>
<given-names><![CDATA[M. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Morse]]></surname>
<given-names><![CDATA[K.]]></given-names>
</name>
</person-group>
<source><![CDATA[Ind. Eng. Chem. Res.]]></source>
<year>2006</year>
<volume>46</volume>
<page-range>52-8</page-range></nlm-citation>
</ref>
<ref id="B9">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[Increased yields in bio-diesel production from used cooking oils by a two step process: Comparison with one step process by using TGA]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Çayli]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<name>
<surname><![CDATA[Küsefoglu]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
</person-group>
<source><![CDATA[Fuel Proc. Technol.]]></source>
<year>2008</year>
<volume>89</volume>
<page-range>118-22</page-range></nlm-citation>
</ref>
<ref id="B10">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[Waste cooking oil as an alternate feedstock for biodiesel production]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Chhetri]]></surname>
<given-names><![CDATA[A. B.]]></given-names>
</name>
<name>
<surname><![CDATA[Watts]]></surname>
<given-names><![CDATA[K. C.]]></given-names>
</name>
<name>
<surname><![CDATA[Islam]]></surname>
<given-names><![CDATA[M. R.]]></given-names>
</name>
</person-group>
<source><![CDATA[Energies]]></source>
<year>2008</year>
<volume>1</volume>
<page-range>3-18</page-range></nlm-citation>
</ref>
<ref id="B11">
<nlm-citation citation-type="book">
<collab>CEN</collab>
<source><![CDATA[EN14214. Automotive fuels- Fatty acid methyl esters (FAME) for diesel engines- Requirements and test methods]]></source>
<year>2008</year>
<publisher-name><![CDATA[European Committee For Standarization. Organización Internacional para la Estandarización (ISO)]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B12">
<nlm-citation citation-type="confpro">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Cosió]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
<name>
<surname><![CDATA[Krajació]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<name>
<surname><![CDATA[Duió]]></surname>
<given-names><![CDATA[N.]]></given-names>
</name>
</person-group>
<source><![CDATA[Estimation of used cooking oil potential for biofuels production in Republic of Croatia]]></source>
<year>2010</year>
<conf-name><![CDATA[ Energy and the Environment 2010]]></conf-name>
<conf-date>18 al 22 de octubre, 2010</conf-date>
<conf-loc>Rijeka, Croacia </conf-loc>
</nlm-citation>
</ref>
<ref id="B13">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[Produgao de biocombustível alternativo ao óleo diésel através da transesterificagao de óleo de soja usado em frituras]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Costa Neto]]></surname>
<given-names><![CDATA[P. R.]]></given-names>
</name>
<name>
<surname><![CDATA[Rossi]]></surname>
<given-names><![CDATA[L. F. S.]]></given-names>
</name>
<name>
<surname><![CDATA[Zagonel]]></surname>
<given-names><![CDATA[G. F.]]></given-names>
</name>
<name>
<surname><![CDATA[Ramos]]></surname>
<given-names><![CDATA[L. P.]]></given-names>
</name>
</person-group>
<source><![CDATA[Quím. Nova]]></source>
<year>2000</year>
<volume>23</volume>
<page-range>531-7</page-range></nlm-citation>
</ref>
<ref id="B14">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[Production of biodiesel from acid waste lard]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Dias]]></surname>
<given-names><![CDATA[J. M.]]></given-names>
</name>
<name>
<surname><![CDATA[Alvim-Ferraz]]></surname>
<given-names><![CDATA[M. C. M.]]></given-names>
</name>
<name>
<surname><![CDATA[Almeida]]></surname>
<given-names><![CDATA[M. F.]]></given-names>
</name>
</person-group>
<source><![CDATA[Biores. Technol.]]></source>
<year>2009</year>
<volume>100</volume>
<page-range>6355-61</page-range></nlm-citation>
</ref>
<ref id="B15">
<nlm-citation citation-type="book">
<collab>EIA</collab>
<source><![CDATA[International energy statistics: Biodiesel production]]></source>
<year>2015</year>
<publisher-name><![CDATA[U.S. Department of Energy U.S. Energy Information Administration (EIA)]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B16">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[Biodiesel from used frying oil. Variables af-fecting the yields and characteristics of the biodiesel]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Encinar]]></surname>
<given-names><![CDATA[J. M.]]></given-names>
</name>
<name>
<surname><![CDATA[González]]></surname>
<given-names><![CDATA[J. F.]]></given-names>
</name>
<name>
<surname><![CDATA[Rodríguez-Reinares]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
</person-group>
<source><![CDATA[Ind. Eng. Chem. Res.]]></source>
<year>2005</year>
<volume>44</volume>
<page-range>5491-9</page-range></nlm-citation>
</ref>
<ref id="B17">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[Production of biodiesel from waste frying oils]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Felizardo]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<name>
<surname><![CDATA[Neiva Correia]]></surname>
</name>
<name>
<surname><![CDATA[Raposo]]></surname>
<given-names><![CDATA[I.]]></given-names>
</name>
<name>
<surname><![CDATA[Mendes]]></surname>
<given-names><![CDATA[J. F.]]></given-names>
</name>
<name>
<surname><![CDATA[Berkemeier]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Bordado]]></surname>
<given-names><![CDATA[J. M.]]></given-names>
</name>
</person-group>
<source><![CDATA[Waste Manage.]]></source>
<year>2006</year>
<volume>26</volume>
<page-range>487-94</page-range></nlm-citation>
</ref>
<ref id="B18">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[Shifts in the membrane fatty acid profile of Streptococcus mutans enhance survival in acidic environments]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Fozo]]></surname>
<given-names><![CDATA[E. M.]]></given-names>
</name>
<name>
<surname><![CDATA[Quivey]]></surname>
<given-names><![CDATA[R. G.]]></given-names>
</name>
</person-group>
<source><![CDATA[App. Env. Microbiol.]]></source>
<year>2004</year>
<volume>70</volume>
<page-range>929-36</page-range></nlm-citation>
</ref>
<ref id="B19">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[Variables affecting the yields of fatty esters from transesterified vegetable oils]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Freedman]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
<name>
<surname><![CDATA[Pryde]]></surname>
<given-names><![CDATA[E. H.]]></given-names>
</name>
<name>
<surname><![CDATA[Mounts]]></surname>
<given-names><![CDATA[T. L.]]></given-names>
</name>
</person-group>
<source><![CDATA[JAOCS]]></source>
<year>1984</year>
<volume>61</volume>
<page-range>1638-43</page-range></nlm-citation>
</ref>
<ref id="B20">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[Biodiesel production by microalgal biotechnology]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Huang]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<name>
<surname><![CDATA[Chen]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
<name>
<surname><![CDATA[Wei]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[Zhang]]></surname>
<given-names><![CDATA[X.]]></given-names>
</name>
<name>
<surname><![CDATA[Chen]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
</person-group>
<source><![CDATA[Appl. Energ.]]></source>
<year>2010</year>
<volume>87</volume>
<page-range>38-46</page-range></nlm-citation>
</ref>
<ref id="B21">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[Fuel quality assessment of biodiesel produced from groundnut oil (Arachis hypogea) and its blend with petroleum diesel]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ibeto]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Ofoefule]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Ezeugwu]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
</person-group>
<source><![CDATA[Am. J. Food Technol.]]></source>
<year>2011</year>
<volume>6</volume>
<page-range>798-803</page-range></nlm-citation>
</ref>
<ref id="B22">
<nlm-citation citation-type="book">
<collab>INEGI</collab>
<source><![CDATA[Población, hogares y vivienda]]></source>
<year>2014</year>
<publisher-name><![CDATA[Instituto Nacional de Estadística y Geografía]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B23">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[A comparison of used cooking oils: A very heterogeneous feedstock for bio-diesel]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Knothe]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<name>
<surname><![CDATA[Steidley]]></surname>
<given-names><![CDATA[K. R.]]></given-names>
</name>
</person-group>
<source><![CDATA[Bioresource Technol.]]></source>
<year>2009</year>
<volume>100</volume>
<page-range>5796-801</page-range></nlm-citation>
</ref>
<ref id="B24">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[Waste cooking oil an economical source for biodiesel: A Review]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Kulkarni]]></surname>
<given-names><![CDATA[M. G.]]></given-names>
</name>
<name>
<surname><![CDATA[Dalai]]></surname>
<given-names><![CDATA[A. K.]]></given-names>
</name>
</person-group>
<source><![CDATA[Ind. Eng. Chem. Res.]]></source>
<year>2006</year>
<volume>45</volume>
<page-range>2901-13</page-range></nlm-citation>
</ref>
<ref id="B25">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[Transesterification of neat and used frying oil: Optimization for biodiesel production]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Leung]]></surname>
<given-names><![CDATA[D. Y. C.]]></given-names>
</name>
<name>
<surname><![CDATA[Guo]]></surname>
<given-names><![CDATA[Y.]]></given-names>
</name>
</person-group>
<source><![CDATA[Fuel Proc. Technol.]]></source>
<year>2006</year>
<volume>87</volume>
<page-range>883-90</page-range></nlm-citation>
</ref>
<ref id="B26">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[A review on biodiesel production using catalyzed transesterification]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Leung]]></surname>
<given-names><![CDATA[D. Y. C.]]></given-names>
</name>
<name>
<surname><![CDATA[Wu]]></surname>
<given-names><![CDATA[X.]]></given-names>
</name>
<name>
<surname><![CDATA[Leung]]></surname>
<given-names><![CDATA[M. K. H.]]></given-names>
</name>
</person-group>
<source><![CDATA[Appl. Energ.]]></source>
<year>2010</year>
<volume>87</volume>
<page-range>1083-95</page-range></nlm-citation>
</ref>
<ref id="B27">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[Preparation of fatty acid methyl esters for gas-chromatographic analysis of lipids in biological materials]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Liu]]></surname>
<given-names><![CDATA[K.S.]]></given-names>
</name>
</person-group>
<source><![CDATA[JAOCS]]></source>
<year>1994</year>
<volume>71</volume>
<page-range>1179-87</page-range></nlm-citation>
</ref>
<ref id="B28">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[Effect of different adsorbents on purification of used sunflower seed oil utilized for frying]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Maskan]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Bagci]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
</person-group>
<source><![CDATA[Eur. Food Res. Technol.]]></source>
<year>2003</year>
<volume>217</volume>
<page-range>215-8</page-range></nlm-citation>
</ref>
<ref id="B29">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[Prospects and potential of fatty acid methyl esters of some non-traditional seed oils for use as biodiesel in India]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Mohibbe Azam]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Waris]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Nahar]]></surname>
<given-names><![CDATA[N. M.]]></given-names>
</name>
</person-group>
<source><![CDATA[Biomass Bioenerg.]]></source>
<year>2005</year>
<volume>29</volume>
<page-range>293-302</page-range></nlm-citation>
</ref>
<ref id="B30">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[The production of biodiesel from waste frying oils: A comparison of different purification steps]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Predojevió]]></surname>
<given-names><![CDATA[Z. J.]]></given-names>
</name>
</person-group>
<source><![CDATA[Fuel]]></source>
<year>2008</year>
<volume>87</volume>
<page-range>3522-8</page-range></nlm-citation>
</ref>
<ref id="B31">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[Advancements in development and characterization of biodiesel: A review]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Sharma]]></surname>
<given-names><![CDATA[Y. C.]]></given-names>
</name>
<name>
<surname><![CDATA[Singh]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
<name>
<surname><![CDATA[Upadhyay]]></surname>
<given-names><![CDATA[S. N.]]></given-names>
</name>
</person-group>
<source><![CDATA[Fuel]]></source>
<year>2008</year>
<volume>87</volume>
<page-range>2355-73</page-range></nlm-citation>
</ref>
<ref id="B32">
<nlm-citation citation-type="book">
<collab>SIE</collab>
<source><![CDATA[IMP: Balance nacional de diésel]]></source>
<year>2015</year>
<publisher-name><![CDATA[Sistema de Información Energética. Secretaría de Energía]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B33">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[A biofuel strategy for Ireland with an emphasis on production of biomethane and minimization of land-take]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Singh]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Smyth]]></surname>
<given-names><![CDATA[B. M.]]></given-names>
</name>
<name>
<surname><![CDATA[Murphy]]></surname>
<given-names><![CDATA[J. D.]]></given-names>
</name>
</person-group>
<source><![CDATA[Ren. Sust. Energy Rev.]]></source>
<year>2010</year>
<volume>14</volume>
<page-range>277-88</page-range></nlm-citation>
</ref>
<ref id="B34">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[Methanolysis of used frying oil]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Tomasevic]]></surname>
<given-names><![CDATA[A. V.]]></given-names>
</name>
<name>
<surname><![CDATA[Siler-Marinkovic]]></surname>
<given-names><![CDATA[S. S.]]></given-names>
</name>
</person-group>
<source><![CDATA[Fuel Proc. Technol.]]></source>
<year>2003</year>
<volume>81</volume>
<page-range>1-6</page-range></nlm-citation>
</ref>
<ref id="B35">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[An investiga-tion of restaurant waste oil characteristics for biodiesel production in Trinidad and Tobago]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Wyse-Mason]]></surname>
<given-names><![CDATA[R. R.]]></given-names>
</name>
<name>
<surname><![CDATA[Beckles]]></surname>
<given-names><![CDATA[D. M.]]></given-names>
</name>
</person-group>
<source><![CDATA[Energy Sust. Dev.]]></source>
<year>2012</year>
<volume>16</volume>
<page-range>515-9</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
