<?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>S0188-49992016000200191</article-id>
<article-id pub-id-type="doi">10.20937/RICA.2016.32.02.05</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Determinación del potencial bioquímico de metano (PBM) de residuos de frutas y verduras en hogares]]></article-title>
<article-title xml:lang="en"><![CDATA[Biochemical methane potential (BMP) determination of wastes of fruits and vegetables from homes]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sánchez-Reyes]]></surname>
<given-names><![CDATA[Claudian]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Patiño-Iglesias]]></surname>
<given-names><![CDATA[María Eugenia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Alcántara-Flores]]></surname>
<given-names><![CDATA[José Luis]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Reyes-Ortega]]></surname>
<given-names><![CDATA[Yasmi]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pérez-Cruz]]></surname>
<given-names><![CDATA[María Ana]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ortíz-Muñoz]]></surname>
<given-names><![CDATA[Esiquio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Benemérita Universidad Autónoma de Puebla Facultad de Ingeniería Química ]]></institution>
<addr-line><![CDATA[Puebla Puebla]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Benemérita Universidad Autónoma de Puebla Centro de Química-Instituto de Ciencias ]]></institution>
<addr-line><![CDATA[Puebla Puebla]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Benemérita Universidad Autónoma de Puebla Facultad de Ciencias Químicas ]]></institution>
<addr-line><![CDATA[Puebla Puebla]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>05</month>
<year>2016</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>05</month>
<year>2016</year>
</pub-date>
<volume>32</volume>
<numero>2</numero>
<fpage>191</fpage>
<lpage>198</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0188-49992016000200191&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0188-49992016000200191&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0188-49992016000200191&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN: En este trabajo se estudia mediante el proceso de digestión anaerobia (DA), la descomposición de materia orgánica de residuos alimenticios de cocina (sustrato) con lodo (inoculo) de una planta de tratamiento de aguas residuales con la finalidad de obtener biogás y determinar el potencial bioquímico de metano (PBM) al final del proceso. Los ensayos que se llevaron a cabo fueron con relaciones sustrato:inóculo (S:I) 1:2 y 1:3, en términos de sólidos volátiles (SV). En el transcurso de la DA en condiciones mesofílicas (35 °C) y tiempos de residencia (TR) de 15 días, se midieron los parámetros más importantes que influyen en esta digestión: SV, sólidos totales (ST), demanda química de oxígeno (DQO) y pH. El biogás obtenido se purificó por medio de la eliminación de H2S y NH3 con trampas de NaOH y H2SO4 1M. En el caso de los experimentos con inóculo y sustrato se recuperaron en promedio 1.235 L de biogás con un 80.15 % de CH4 y en los ensayos con inóculo sin sustrato 0.720 L de biogás con 90.47 % de CH4. La cuantificación de este gas se llevó a cabo por cromatografía de gases. Los resultados que se obtuvieron concuerdan favorablemente con la producción de biogás y la disminución de la materia o carga orgánica expresada como DQO. En la determinación de PBM se obtuvieron 124.82 y 127.89 mL CH4/g SV para experimentos S:I-1:3 y para la relación 1:2, 103.39 y 116.27 mL CH4/g SV.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT: In this work we studied the decomposition of organic matter of food kitchen wastes (substrate) by sewage sludge (inoculum) from a wastewater treatment plant, through the process of anaerobic digestion (AD) in order to obtain biogas and to determine the biochemical methane potential (BMP) at the end of this process. The tests were performed with substrate:inoculum ratios 1:2 and 1:3, in terms of volatile solids (VS). The most important parameters that influence AD were VS, total solids (TS), chemical oxigen demand (COD) and pH. They were measured in the course of the process in mesophilic conditions (35 °C) and retention times of 15 days. The biogas obtained was purified by removing H2S and NH3 with NaOH and H2SO4 traps. For experiments with inoculum and substrate, 1.235 L of biogas with 80.15 % CH4 were recovered and for tests without substrate, 0.720 L of biogas with 90.47 % of CH4 were gathered. The quantification of this gas was performed by gas chromatography. The results agree with biogas production and organic load decrease, expressed as COD. For experiments S:I, the BMP values obtained were 124.82 and 127.89 mL CH4/g VS, for 1:3 and 103.39 and 116.27 mL CH4/g VS for 1:2.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[digestión anaerobia]]></kwd>
<kwd lng="es"><![CDATA[biogás]]></kwd>
<kwd lng="es"><![CDATA[inóculo]]></kwd>
<kwd lng="es"><![CDATA[sustrato]]></kwd>
<kwd lng="en"><![CDATA[anaerobic digestion]]></kwd>
<kwd lng="en"><![CDATA[biogas]]></kwd>
<kwd lng="en"><![CDATA[inoculum]]></kwd>
<kwd lng="en"><![CDATA[substrate]]></kwd>
</kwd-group>
</article-meta>
</front><back>
<ref-list>
<ref id="B1">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[Anaerobic digestion of municipal solid wastes containing variable proportions of waste types]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Akunna]]></surname>
<given-names><![CDATA[J.C.]]></given-names>
</name>
<name>
<surname><![CDATA[Abdullahi]]></surname>
<given-names><![CDATA[YA.]]></given-names>
</name>
<name>
<surname><![CDATA[Stewart]]></surname>
<given-names><![CDATA[N.A.]]></given-names>
</name>
</person-group>
<source><![CDATA[Water Sci. Technol]]></source>
<year>2007</year>
<volume>56</volume>
<page-range>143-9</page-range></nlm-citation>
</ref>
<ref id="B2">
<nlm-citation citation-type="book">
<collab>APHA</collab>
<source><![CDATA[Standard methods for the examination of water and wastewater]]></source>
<year>2005</year>
<edition>21</edition>
<publisher-loc><![CDATA[Washington, EUA ]]></publisher-loc>
<publisher-name><![CDATA[Centennial Edition]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B3">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[Principles and potential of the anaerobic digestion of waste-activated sludge]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Appels]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
<name>
<surname><![CDATA[Baeyens]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Degréve]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Dewil]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
</person-group>
<source><![CDATA[Prog. Energ. Combust]]></source>
<year>2008</year>
<volume>34</volume>
<page-range>755-81</page-range></nlm-citation>
</ref>
<ref id="B4">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[Continuous co-digestion of cattle slurry with fruit and vegetable wastes and chicken manure]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Callaghan]]></surname>
<given-names><![CDATA[F.J.]]></given-names>
</name>
<name>
<surname><![CDATA[Wase]]></surname>
<given-names><![CDATA[D.A.J.]]></given-names>
</name>
<name>
<surname><![CDATA[Thayanithy]]></surname>
<given-names><![CDATA[K.]]></given-names>
</name>
<name>
<surname><![CDATA[Forster]]></surname>
<given-names><![CDATA[C.F.]]></given-names>
</name>
</person-group>
<source><![CDATA[Biomass Bioenerg]]></source>
<year>2002</year>
<volume>27</volume>
<page-range>71-7</page-range></nlm-citation>
</ref>
<ref id="B5">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Deublein]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[Steinhauser]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
</person-group>
<source><![CDATA[Biogas from waste and renewable resources. An Introduction]]></source>
<year>2008</year>
<publisher-loc><![CDATA[Weinheim, Alemania ]]></publisher-loc>
<publisher-name><![CDATA[WILEY-VCH]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B6">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[Influence of total solid and inoculum contents on performance of anaerobic reactors treating food waste]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Forster-Carneiro]]></surname>
<given-names><![CDATA[T.]]></given-names>
</name>
<name>
<surname><![CDATA[Pérez]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Romero]]></surname>
<given-names><![CDATA[L.I.]]></given-names>
</name>
</person-group>
<source><![CDATA[Bioresource Technol]]></source>
<year>2008</year>
<volume>99</volume>
<page-range>6994-7002</page-range></nlm-citation>
</ref>
<ref id="B7">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[Improvement of activated sludge stabilisation and filterability during anaerobic digestion by fruit and vegetable waste addition]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Habiba]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
<name>
<surname><![CDATA[Hassib]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
<name>
<surname><![CDATA[Moktar]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
</person-group>
<source><![CDATA[Bioresource Technol]]></source>
<year>2009</year>
<volume>100</volume>
<page-range>1555-60</page-range></nlm-citation>
</ref>
<ref id="B8">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[Food waste co-digestion with sewage sludge - Realising its potential in the UK]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Iacovidou]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Ohandja]]></surname>
<given-names><![CDATA[D.-G.]]></given-names>
</name>
<name>
<surname><![CDATA[Voulvoulis]]></surname>
<given-names><![CDATA[N.]]></given-names>
</name>
</person-group>
<source><![CDATA[J. Environ. Manage]]></source>
<year>2012</year>
<volume>112</volume>
<page-range>267-74</page-range></nlm-citation>
</ref>
<ref id="B9">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[Effect of temperature on VFA's and biogas production in anaerobic solubilization of food waste]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Komemoto]]></surname>
<given-names><![CDATA[K.]]></given-names>
</name>
<name>
<surname><![CDATA[Lim]]></surname>
<given-names><![CDATA[Y.G.]]></given-names>
</name>
<name>
<surname><![CDATA[Nagao]]></surname>
<given-names><![CDATA[N.]]></given-names>
</name>
<name>
<surname><![CDATA[Onoue]]></surname>
<given-names><![CDATA[Y.]]></given-names>
</name>
<name>
<surname><![CDATA[Niwa]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Toda]]></surname>
<given-names><![CDATA[T.]]></given-names>
</name>
</person-group>
<source><![CDATA[Waste Manage]]></source>
<year>2009</year>
<volume>29</volume>
<page-range>2950-5</page-range></nlm-citation>
</ref>
<ref id="B10">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[Methane production potential of leachate generated from Korean food waste recycling facilities: A lab-scale study]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Lee]]></surname>
<given-names><![CDATA[D.H.]]></given-names>
</name>
<name>
<surname><![CDATA[Behera]]></surname>
<given-names><![CDATA[S.K.]]></given-names>
</name>
<name>
<surname><![CDATA[Kim]]></surname>
<given-names><![CDATA[J.W.]]></given-names>
</name>
<name>
<surname><![CDATA[Park]]></surname>
<given-names><![CDATA[H-S.]]></given-names>
</name>
</person-group>
<source><![CDATA[Waste Manage]]></source>
<year>2009</year>
<volume>29</volume>
<page-range>876-82</page-range></nlm-citation>
</ref>
<ref id="B11">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[Alternative methods for determining anaerobic biodegradability: A review]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Lesteur]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Bellon-Maurel]]></surname>
<given-names><![CDATA[V.]]></given-names>
</name>
<name>
<surname><![CDATA[Gonzalez]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Latrille]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Roger]]></surname>
<given-names><![CDATA[J.M.]]></given-names>
</name>
<name>
<surname><![CDATA[Junqua]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<name>
<surname><![CDATA[Steyer]]></surname>
<given-names><![CDATA[J.P.]]></given-names>
</name>
</person-group>
<source><![CDATA[Process Biochem]]></source>
<year>2010</year>
<volume>45</volume>
<page-range>431-40</page-range></nlm-citation>
</ref>
<ref id="B12">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[Effect of feed to inoculum ratios on biogas yields of food and green wastes]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Liu]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<name>
<surname><![CDATA[Zhang]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[El-Mashad]]></surname>
<given-names><![CDATA[H.M.]]></given-names>
</name>
<name>
<surname><![CDATA[Dong]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
</person-group>
<source><![CDATA[Bioresource Technol]]></source>
<year>2009</year>
<volume>100</volume>
<page-range>5103-8</page-range></nlm-citation>
</ref>
<ref id="B13">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[Co-digestion of press water and food waste in a biowaste digester for improvement of biogas production]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Nayono]]></surname>
<given-names><![CDATA[S.E.]]></given-names>
</name>
<name>
<surname><![CDATA[Gallert]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<name>
<surname><![CDATA[Winter]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
</person-group>
<source><![CDATA[Bioresource Technol]]></source>
<year>2010</year>
<volume>101</volume>
<page-range>6987-93</page-range></nlm-citation>
</ref>
<ref id="B14">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[Biochemical methane potential (BMP) of agro-food wastes from the Cider Region (Spain)]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Nieto]]></surname>
<given-names><![CDATA[P.P.]]></given-names>
</name>
<name>
<surname><![CDATA[Hidalgo]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[Irusta]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Kraut]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
</person-group>
<source><![CDATA[Water Sci. Technol]]></source>
<year>2012</year>
<volume>66</volume>
<page-range>1842-8</page-range></nlm-citation>
</ref>
<ref id="B15">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[Thermophilic anaerobic co-digestion of oil palm empty fruit bunches with palm oil mill effluent for efficient biogas production]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[O-Thong]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Boe]]></surname>
<given-names><![CDATA[K.]]></given-names>
</name>
<name>
<surname><![CDATA[Angelidaki]]></surname>
<given-names><![CDATA[I.]]></given-names>
</name>
</person-group>
<source><![CDATA[Appl. Energ]]></source>
<year>2012</year>
<volume>93</volume>
<page-range>648-54</page-range></nlm-citation>
</ref>
<ref id="B16">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[An OxiTop(®) protocol for screening plant material for its biochemical methane potential (BMP)]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Pabón Pereira]]></surname>
<given-names><![CDATA[C.P.]]></given-names>
</name>
<name>
<surname><![CDATA[Castañares]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<name>
<surname><![CDATA[Van Lier]]></surname>
<given-names><![CDATA[J.B.]]></given-names>
</name>
</person-group>
<source><![CDATA[Water Sci. Technol]]></source>
<year>2012</year>
<volume>66</volume>
<page-range>1416-23</page-range></nlm-citation>
</ref>
<ref id="B17">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[Fundamentals of anaerobic digestion of wastewater sludges]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Parkin]]></surname>
<given-names><![CDATA[G. F.]]></given-names>
</name>
<name>
<surname><![CDATA[Owen]]></surname>
<given-names><![CDATA[W. F.]]></given-names>
</name>
</person-group>
<source><![CDATA[J. Environ. Eng]]></source>
<year>1986</year>
<volume>112</volume>
<page-range>867-920</page-range></nlm-citation>
</ref>
<ref id="B18">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[Influence of inoculum to substrate ratio on the biochemical methane potential of maize in batch tests]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Raposo]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
<name>
<surname><![CDATA[Banks]]></surname>
<given-names><![CDATA[C. J.]]></given-names>
</name>
<name>
<surname><![CDATA[Siegert]]></surname>
<given-names><![CDATA[I.]]></given-names>
</name>
<name>
<surname><![CDATA[Heaven]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Borja]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
</person-group>
<source><![CDATA[Process Biochem]]></source>
<year>2006</year>
<volume>41</volume>
<page-range>1444-50</page-range></nlm-citation>
</ref>
<ref id="B19">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[Co-Digestion of tannery solid wastes with primary sewage sludge and vegetable wastes for biogas production]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Velmurugan]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
<name>
<surname><![CDATA[Ramanujam]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
</person-group>
<source><![CDATA[. Solid Waste Tech. Manag]]></source>
<year>2012</year>
<volume>38</volume>
<page-range>11-8</page-range></nlm-citation>
</ref>
<ref id="B20">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[Characterization of food waste as feedstock for anaerobic digestion]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Zhang]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[El-Mashad]]></surname>
<given-names><![CDATA[H.M.]]></given-names>
</name>
<name>
<surname><![CDATA[Hartman]]></surname>
<given-names><![CDATA[K.]]></given-names>
</name>
<name>
<surname><![CDATA[Wang]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
<name>
<surname><![CDATA[Liu]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<name>
<surname><![CDATA[Choate]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Gamble]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
</person-group>
<source><![CDATA[Bioresource Technol]]></source>
<year>2007</year>
<volume>98</volume>
<page-range>929-35</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
