TY - JOUR AU - Ibáñez-Calero, Sandra L. AU - Loayza Afonso, Kelly E. PY - 2019/07/17 Y2 - 2024/03/28 TI - A SCREENING FOR ANTIOXIDANT SPECIES WITH PHOTO-PROTECTOR ACTIVITIES AT THE ZONGO VALLEY (BOLIVIA) JF - Revista Investigación & Desarrollo JA - I&D VL - 19 IS - 1 SE - Ingenierías DO - 10.23881/idupbo.019.1-2i UR - https://www.upb.edu/revista-investigacion-desarrollo/index.php/id/article/view/187 SP - AB - <p><span style="font-size: small;">Eleven plants were collected at the Zongo Valley to evaluate their antioxidant and photo-protector properties. In this paper we report a strong correlation between high antioxidant activity and strong UV-A and/or UV-B absorptions. The most active species, tested at 10µg/ml with the DPPH assay, were </span><span style="font-size: small;"><em>Fuchsia boliviana (leaves), Baccharis pentlandii </em></span><span style="font-size: small;">(flowers),</span><span style="font-size: small;"><em> Rubus floribundus </em></span><span style="font-size: small;">(fruits), </span><span style="font-size: small;"><em>Fuchsia boliviana </em></span><span style="font-size: small;">(flowers and fruits)</span><span style="font-size: small;"><em> and Brachyotum microdon </em></span><span style="font-size: small;">(flowers). All the mentioned species have important UV- B and/or UV-A absorptions. This DPPH/UV technique could be used to preliminary screen vegetable samples and to select those with DPPH values above 83% and strong UV-A and/or UV-B absorptions. The chosen samples can then be evaluated with other more expensive </span><span style="font-size: small;"><em>in vitro</em></span><span style="font-size: small;"> assay (TEAC, ABTS or FRAP) to finally confirm their activities with the </span><span style="font-size: small;"><em>in vivo</em></span><span style="font-size: small;"> test. To our knowledge, this is the first time that the antioxidant properties of </span><span style="font-size: small;"><em>Distichia muscoides</em></span><span style="font-size: small;">, </span><span style="font-size: small;"><em>Souroubea fragilis</em></span><span style="font-size: small;">, </span><span style="font-size: small;"><em>Brachyotum microdon</em></span><span style="font-size: small;">, </span><span style="font-size: small;"><em>Monnina bridgesii</em></span><span style="font-size: small;">, </span><span style="font-size: small;"><em>Baccharis pentlandii</em></span><span style="font-size: small;">, </span><span style="font-size: small;"><em>Thibaudia crenulata</em></span><span style="font-size: small;">, </span><span style="font-size: small;"><em>Siphocampylus tupaeformis</em></span><span style="font-size: small;">, </span><span style="font-size: small;"><em>Cobaea scandens</em></span><span style="font-size: small;">, </span><span style="font-size: small;"><em>Fuchsia boliviana</em></span><span style="font-size: small;"> and </span><span style="font-size: small;"><em>Rubus floribundus</em></span><span style="font-size: small;"> are reported. In addition, this is the first time that </span><span style="font-size: small;"><em>Siphocampylus tupaeformis</em></span><span style="font-size: small;"> and </span><span style="font-size: small;"><em>Thibaudia crenulata</em></span><span style="font-size: small;"> are presented in a publication as well as the study of their photo-protector and antioxidant properties.</span></p> ER -