<?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>0121-4004</journal-id>
<journal-title><![CDATA[Vitae]]></journal-title>
<abbrev-journal-title><![CDATA[Vitae]]></abbrev-journal-title>
<issn>0121-4004</issn>
<publisher>
<publisher-name><![CDATA[Facultad de Química Farmacéutica, Universidad de Antioquia]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0121-40042025000200003</article-id>
<article-id pub-id-type="doi">10.17533/udea.vitae.v32n2a359623</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Photoprotective Capacity of Pheophytin a isolated from Caribbean Sea brown algae]]></article-title>
<article-title xml:lang="es"><![CDATA[Capacidad fotoprotectora de feofitina a aislada de algas pardas del Mar Caribe]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Abril]]></surname>
<given-names><![CDATA[Sara P.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rubiano Buitrago]]></surname>
<given-names><![CDATA[Paola]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ramos]]></surname>
<given-names><![CDATA[P; Freddy A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Castellanos]]></surname>
<given-names><![CDATA[Leonardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Nacional de Colombia Facultad de Ciencias Departamento de Química]]></institution>
<addr-line><![CDATA[Bogotá D.C ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Cornell University Department of Ecology and Evolutionary Biology ]]></institution>
<addr-line><![CDATA[Ithaca New York]]></addr-line>
<country>USA</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>08</month>
<year>2025</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>08</month>
<year>2025</year>
</pub-date>
<volume>32</volume>
<numero>2</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0121-40042025000200003&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0121-40042025000200003&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0121-40042025000200003&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Background:  Due to its high energy and deep penetration capacity, solar radiation possesses significant risks to skin health, including sunburn, hyperpigmentation, the inhibition of the skin's immune system, and the development of melanoma and nonmelanoma skin cancers, among others. Photoprotection includes an array of strategies to prevent the harmful effects of solar radiation on the skin and other parts of the body, becoming crucial in preventing skin damage and associated pathologies. Although there are various methods to prevent sunlight's negative effects, there is a serious growing concern about the environmental and health impacts of traditional synthetic UV filters, underscoring the need for new, effective photoprotective products. Due to their photoprotective capacity, natural products from algae have been proposed for skin protection in cosmetic applications.  Objectives: This work aimed to evaluate the photoprotective capacity of pheophytin a isolated from the brown algae Dictyota pinnatifida collected in the Colombian Caribbean Sea.  Methods:  Pheophytin a was isolated from the brown seaweed Dictyota pinnatifida. Three in vitro spectrophotometric activity assays (SPF: Sun Protection Factor; UVAr: UVA ratio; and &#955;c: critical wavelength) were used to evaluate this compound's photoprotection capacity.  Results:  This chlorophyll derivative is a magnesium-free pigment, with multiple conjugated double bonds featuring a porphyrin ring esterified with a phytol chain. Such structural features make this marine natural product optimal for absorbing solar radiation. In vitro photoprotective activity assays revealed promising results for skin photoprotection with SPF of 2.916 ± 0.355 and 1.411 ± 0.138, UVAr of 6.815 ± 2.296 and 4.629 ± 1.347, and &#955;c of 394.639 ± 0.493 nm and 394.072 ± 0.912 nm, at concentrations of 30 and 10 ppm, respectively. The last two parameters, together with this compound UV-Vis spectrum (absorption maxima at 409 nm), demonstrate its potential for UVA and visible light skin protection.  Conclusions: Pheophytin a has the potential for skin-photoprotection-related applications, particularly against UVA radiation.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Antecedentes:  Considerando la alta energía y capacidad de penetración, la radiación solar puede representar riesgos significativos para la salud de la piel, incluyendo quemaduras, hiperpigmentación, la inhibición del sistema inmunológico de la piel y el desarrollo de cáncer de piel, entre otros. La fotoprotección son todas las estrategias para prevenir los efectos nocivos de la radiación solar sobre la piel y otras partes del cuerpo, siendo clave para prevenir daños cutáneos y patologías asociadas. Aunque hay varios métodos para prevenir los danos nocivos que puede generar la radiación solar, hay una creciente preocupación por el impacto que tiene el uso de filtros sintéticos UV tradicionales en la salud humana y los ecosistemas. Debido a su capacidad fotoprotectora, los productos naturales derivados de las algas han resultado prometedores para la protección de la piel en aplicaciones cosméticas.  Objetivos:  En este trabajo se evaluó la actividad fotoprotectora de la feofitina a aislada a partir del alga parda Dictyota pinnatifida colectada en el Caribe Colombiano.  Metodología:  La feofitina a fue aislada a partir del alga parda Dictyota pinnatifida y su capacidad fotoprotectora fue evaluada a partir de la determinación in vitro de tres parámetros de protección solar (SPF, Factor de protección solar; UVAr radiación UltraVioleta; and &#955;c, Longitud de onda crítica).  Resultados:  La feofitina a es un pigmento derivado de la clorofila a que contiene un anillo porfirínico esterificado con una cadena de fitol. Estas características estructurales hacen que este producto marino natural sea óptimo para absorber la radiación solar. La evaluación in vitro de la capacidad fotoprotectora de este compuesto mostró resultados prometedores para la protección de la piel con valores de SPF de 2.916 ± 0.355 y 1.411 ± 0.138, UVAr de 6.815 ± 2.296 y 4.629 ± 1.347, y &#955;c de 394.639 ± 0.493 nm y 394.072 ± 0.912 nm, a concentraciones de 30 y 10 ppm, respectivamente. Estos dos últimos parámetros, junto con el espectro UV-Vis del compuesto (máximo de absorción en 409 nm), demostraron su potencial como fotoprotector para la piel frente a la radiación UVA y luz visible.  Conclusiones:  La feofitina a tiene capacidad de protección frente a la radiación UVA, siendo un compuesto prometedor para productos para la fotoprotección de la piel.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Dictyota pinnatifida]]></kwd>
<kwd lng="en"><![CDATA[photoprotection]]></kwd>
<kwd lng="en"><![CDATA[Ochrophyta]]></kwd>
<kwd lng="en"><![CDATA[in vitro assay]]></kwd>
<kwd lng="en"><![CDATA[radiation]]></kwd>
<kwd lng="en"><![CDATA[UV]]></kwd>
<kwd lng="es"><![CDATA[Dictyota pinnatifida]]></kwd>
<kwd lng="es"><![CDATA[fotoprotección]]></kwd>
<kwd lng="es"><![CDATA[Ochrophyta]]></kwd>
<kwd lng="es"><![CDATA[ensayo in vitro]]></kwd>
<kwd lng="es"><![CDATA[radiación]]></kwd>
<kwd lng="es"><![CDATA[UV]]></kwd>
</kwd-group>
</article-meta>
</front><back>
<ref-list>
<ref id="B1">
<label>1</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Sklar]]></surname>
<given-names><![CDATA[LR]]></given-names>
</name>
<name>
<surname><![CDATA[Almutawa]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
<name>
<surname><![CDATA[Lim]]></surname>
<given-names><![CDATA[HW]]></given-names>
</name>
<name>
<surname><![CDATA[Hamzavi]]></surname>
<given-names><![CDATA[I]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Effects of ultraviolet radiation, visible light, and infrared radiation on erythema and pigmentation: A review]]></article-title>
<source><![CDATA[Photochem Photobiol Sci]]></source>
<year>2013</year>
<volume>12</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>54-64</page-range></nlm-citation>
</ref>
<ref id="B2">
<label>2</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Saewan]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
<name>
<surname><![CDATA[Jimtaisong]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Natural products as photoprotection]]></article-title>
<source><![CDATA[J Cosmet Dermatol]]></source>
<year>2015</year>
<volume>14</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>47-63</page-range></nlm-citation>
</ref>
<ref id="B3">
<label>3</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Rai]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Shanmuga]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Srinivas]]></surname>
<given-names><![CDATA[CR]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Update on photoprotection]]></article-title>
<source><![CDATA[Indian J Dermatol]]></source>
<year>2012</year>
<volume>57</volume>
<numero>5</numero>
<issue>5</issue>
<page-range>335-42</page-range></nlm-citation>
</ref>
<ref id="B4">
<label>4</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Randhawa]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Seo]]></surname>
<given-names><![CDATA[IS]]></given-names>
</name>
<name>
<surname><![CDATA[Liebel]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
<name>
<surname><![CDATA[Southall]]></surname>
<given-names><![CDATA[MD]]></given-names>
</name>
<name>
<surname><![CDATA[Kollias]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
<name>
<surname><![CDATA[Ruvolo]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Visible light induces melanogenesis in human skin through a photoadaptive response]]></article-title>
<source><![CDATA[PLoS One]]></source>
<year>2015</year>
<volume>10</volume>
<numero>6</numero>
<issue>6</issue>
<page-range>1-14</page-range></nlm-citation>
</ref>
<ref id="B5">
<label>5</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Nelson]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Photoprotection]]></article-title>
<source><![CDATA[Sunscreens: Regulations and commercial development]]></source>
<year>2005</year>
<edition>Third Edit Aufl</edition>
<page-range>19-39</page-range><publisher-name><![CDATA[Taylor&amp; Francis Group]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B6">
<label>6</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Lim]]></surname>
<given-names><![CDATA[HW]]></given-names>
</name>
<name>
<surname><![CDATA[Arellano-Mendoza]]></surname>
<given-names><![CDATA[MI]]></given-names>
</name>
<name>
<surname><![CDATA[Stengel]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Current challenges in photoprotection]]></article-title>
<source><![CDATA[J Am Acad Dermatol]]></source>
<year>2017</year>
<volume>76</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>S91-9</page-range></nlm-citation>
</ref>
<ref id="B7">
<label>7</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Reis Mansur]]></surname>
<given-names><![CDATA[MCPP]]></given-names>
</name>
<name>
<surname><![CDATA[Leitão]]></surname>
<given-names><![CDATA[SG]]></given-names>
</name>
<name>
<surname><![CDATA[Cerqueira-Coutinho]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Vermelho]]></surname>
<given-names><![CDATA[AB]]></given-names>
</name>
<name>
<surname><![CDATA[Silva]]></surname>
<given-names><![CDATA[RS]]></given-names>
</name>
<name>
<surname><![CDATA[Presgrave]]></surname>
<given-names><![CDATA[OAF]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[In vitro and in vivo evaluation of efficacy and safety of photoprotective formulations containing antioxidant extracts]]></article-title>
<source><![CDATA[Rev Bras Farmacogn]]></source>
<year>2016</year>
<volume>26</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>251-8</page-range></nlm-citation>
</ref>
<ref id="B8">
<label>8</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[He]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
<name>
<surname><![CDATA[Li]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Li]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Tang]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Li]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
<name>
<surname><![CDATA[Xiong]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Natural components in sunscreens: Topical formulations with sun protection factor (SPF)]]></article-title>
<source><![CDATA[Biomed Pharmacother]]></source>
<year>2021</year>
<volume>134</volume>
</nlm-citation>
</ref>
<ref id="B9">
<label>9</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Torres]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Enk]]></surname>
<given-names><![CDATA[CD]]></given-names>
</name>
<name>
<surname><![CDATA[Hochberg]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Srebnik]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Porphyra-334, a potential natural source for UVA protective sunscreens]]></article-title>
<source><![CDATA[Photochem Photobiol Sci]]></source>
<year>2006</year>
<volume>5</volume>
<numero>4</numero>
<issue>4</issue>
<page-range>432-5</page-range></nlm-citation>
</ref>
<ref id="B10">
<label>10</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Diffey]]></surname>
<given-names><![CDATA[BL]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A perspective on the need for topical sunscreens]]></article-title>
<source><![CDATA[Sunscreens: Regulations and commercial development]]></source>
<year>2005</year>
<edition>Third Edit Aufl</edition>
<page-range>45-52</page-range><publisher-loc><![CDATA[New Castle ]]></publisher-loc>
<publisher-name><![CDATA[Taylor&amp; Francis Group]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B11">
<label>11</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Shaath]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
<name>
<surname><![CDATA[Flores]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Modern Analytical Techniques in the Sunscreen Industry]]></article-title>
<source><![CDATA[Sunscreens: Regulations and commercial development]]></source>
<year>2005</year>
<edition>Third Edit Aufl</edition>
<page-range>752-65</page-range><publisher-loc><![CDATA[New York, NY ]]></publisher-loc>
<publisher-name><![CDATA[Taylor&amp; Francis Group]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B12">
<label>12</label><nlm-citation citation-type="">
<collab>Instituto de Investigaciones Marinas y Costeras - Invemar</collab>
<source><![CDATA[Diversidad de Macroalgas Marinas del Caribe colombiano]]></source>
<year>2020</year>
<edition>v2.8</edition>
</nlm-citation>
</ref>
<ref id="B13">
<label>13</label><nlm-citation citation-type="">
<collab>SIB Colombia</collab>
<source><![CDATA[Diversidad de Macroalgas Marinas del Caribe]]></source>
<year></year>
</nlm-citation>
</ref>
<ref id="B14">
<label>14</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Pangestuti]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Siahaan]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[Kim]]></surname>
<given-names><![CDATA[S-K]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Photoprotective Substances Derived from Marine Algae]]></article-title>
<source><![CDATA[Mar Drugs]]></source>
<year>2018</year>
<volume>16</volume>
<numero>11</numero>
<issue>11</issue>
</nlm-citation>
</ref>
<ref id="B15">
<label>15</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Aslam]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Bahadar]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Liaquat]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Saleem]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Waqas]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Zwawi]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Algae as an attractive source for cosmetics to counter environmental stress]]></article-title>
<source><![CDATA[Sci Total Environ]]></source>
<year>2021</year>
<volume>772</volume>
</nlm-citation>
</ref>
<ref id="B16">
<label>16</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[De Clerck]]></surname>
<given-names><![CDATA[O]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The genus Dictyota (Dictyotales, Phaeophyta) in the Indian Ocean]]></article-title>
<source><![CDATA[Botanica Marina]]></source>
<year>2004</year>
<volume>47</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>261-2</page-range></nlm-citation>
</ref>
<ref id="B17">
<label>17</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Litter]]></surname>
<given-names><![CDATA[DS]]></given-names>
</name>
<name>
<surname><![CDATA[Litter]]></surname>
<given-names><![CDATA[MM]]></given-names>
</name>
</person-group>
<source><![CDATA[Caribbean Reef Plants: An Identification Guide to the Reef Plants of the Caribbean, Bahamas, Florida and Gulf of Mexico]]></source>
<year>2000</year>
<publisher-loc><![CDATA[Washington, D.C. ]]></publisher-loc>
<publisher-name><![CDATA[Offshore Graphics, Inc]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B18">
<label>18</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Iglesias]]></surname>
<given-names><![CDATA[MJ]]></given-names>
</name>
<name>
<surname><![CDATA[Soengas]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Probert]]></surname>
<given-names><![CDATA[I]]></given-names>
</name>
<name>
<surname><![CDATA[Guilloud]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[Gourvil]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
<name>
<surname><![CDATA[Mehiri]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[NMR characterization and evaluation of antibacterial and antiobiofilm activity of organic extracts from stationary phase batch cultures of five marine microalgae (Dunaliella sp., D. salina, Chaetoceros calcitrans, C. gracilis and Tisochrysis lutea)]]></article-title>
<source><![CDATA[Phytochemistry]]></source>
<year>2019</year>
<volume>164</volume>
<page-range>192-205</page-range></nlm-citation>
</ref>
<ref id="B19">
<label>19</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Islam]]></surname>
<given-names><![CDATA[MN]]></given-names>
</name>
<name>
<surname><![CDATA[Ishita]]></surname>
<given-names><![CDATA[IJ]]></given-names>
</name>
<name>
<surname><![CDATA[Jin]]></surname>
<given-names><![CDATA[SE]]></given-names>
</name>
<name>
<surname><![CDATA[Choi]]></surname>
<given-names><![CDATA[RJ]]></given-names>
</name>
<name>
<surname><![CDATA[Lee]]></surname>
<given-names><![CDATA[CM]]></given-names>
</name>
<name>
<surname><![CDATA[Kim]]></surname>
<given-names><![CDATA[YS]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Anti-inflammatory activity of edible brown alga Saccharina japonica and its constituents pheophorbide a and pheophytin a in LPS-stimulated RAW 264.7 macrophage cells]]></article-title>
<source><![CDATA[Food Chem Toxicol]]></source>
<year>2013</year>
<volume>55</volume>
<page-range>541-8</page-range></nlm-citation>
</ref>
<ref id="B20">
<label>20</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Friday]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Igwe]]></surname>
<given-names><![CDATA[OU]]></given-names>
</name>
<name>
<surname><![CDATA[Akwada]]></surname>
<given-names><![CDATA[UC]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[NMR characterization and free radical scavenging activity of pheophytin &#8220;a&#8221; from the leaves of Dissotis rotundifolia]]></article-title>
<source><![CDATA[Bull Chem Soc Ethiop]]></source>
<year>2021</year>
<volume>35</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>207-15</page-range></nlm-citation>
</ref>
<ref id="B21">
<label>21</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Mansur]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Breder]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Mansur]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Azulay]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Determination of Sun protection factor by spectrophotometry]]></article-title>
<source><![CDATA[An Bras Dermatol]]></source>
<year>1986</year>
<volume>61</volume>
<page-range>121-4</page-range></nlm-citation>
</ref>
<ref id="B22">
<label>22</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Nunes]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Gonçalves]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
<name>
<surname><![CDATA[Marto]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Martins]]></surname>
<given-names><![CDATA[AM]]></given-names>
</name>
<name>
<surname><![CDATA[Silva]]></surname>
<given-names><![CDATA[AN]]></given-names>
</name>
<name>
<surname><![CDATA[Pinto]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Investigations of olive oil industry by-products extracts with potential skin benefits in topical formulations]]></article-title>
<source><![CDATA[Pharmaceutics]]></source>
<year>2021</year>
<volume>13</volume>
<numero>4</numero>
<issue>4</issue>
</nlm-citation>
</ref>
<ref id="B23">
<label>23</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Sayre]]></surname>
<given-names><![CDATA[RM]]></given-names>
</name>
<name>
<surname><![CDATA[Agin]]></surname>
<given-names><![CDATA[PP]]></given-names>
</name>
<name>
<surname><![CDATA[LeVee]]></surname>
<given-names><![CDATA[GJ]]></given-names>
</name>
<name>
<surname><![CDATA[Marlowe]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A comparison of in vivo and in vitro testing of sunscreening formulas]]></article-title>
<source><![CDATA[Photochem Photobiol]]></source>
<year>1979</year>
<volume>29</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>559-66</page-range></nlm-citation>
</ref>
<ref id="B24">
<label>24</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Rojas]]></surname>
<given-names><![CDATA[José L]]></given-names>
</name>
<name>
<surname><![CDATA[Díaz-Santos]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Valencia-Islas]]></surname>
<given-names><![CDATA[NA]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Metabolites with antioxidant and photo-protective properties from Usnea roccellina Motyka, a lichen from Colombian Andes]]></article-title>
<source><![CDATA[Pharm Biosci J]]></source>
<year>2015</year>
<volume>3</volume>
<numero>4</numero>
<issue>4</issue>
<page-range>18-26</page-range></nlm-citation>
</ref>
<ref id="B25">
<label>25</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Bautista]]></surname>
<given-names><![CDATA[CA]]></given-names>
</name>
<name>
<surname><![CDATA[Puentes]]></surname>
<given-names><![CDATA[CA]]></given-names>
</name>
<name>
<surname><![CDATA[Vargas-Peláez]]></surname>
<given-names><![CDATA[CM]]></given-names>
</name>
<name>
<surname><![CDATA[Santos-Acevedo]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Ramos]]></surname>
<given-names><![CDATA[FA]]></given-names>
</name>
<name>
<surname><![CDATA[Gómez-León]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The state of the art of marine natural products in Colombia]]></article-title>
<source><![CDATA[Rev Colomb Quím]]></source>
<year>2022</year>
<volume>51</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>24-39</page-range></nlm-citation>
</ref>
<ref id="B26">
<label>26</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Rubiano-Buitrago]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
<name>
<surname><![CDATA[Duque]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
<name>
<surname><![CDATA[Puyana]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Ramos]]></surname>
<given-names><![CDATA[FA]]></given-names>
</name>
<name>
<surname><![CDATA[Castellanos]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Bacterial biofilm inhibitor diterpenes from Dictyota pinnatifida collected from the Colombian Caribbean]]></article-title>
<source><![CDATA[Phytochem Lett]]></source>
<year>2019</year>
<volume>30</volume>
<page-range>74-80</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
