Florotanino

Ecol, un florotanino

Un florotanino es un tipo de tanino encontrado en algas del phyllum Phaeophyta (algas pardas)[1]​ como los sargazos.[2]​ Al contrario de los taninos hidrolizables o condensados, estos compuestos son oligómeros del floroglucinol[3]​ (polifloroglucinoles).[4]​ Los florotaninos se clasifican en fuhaloles, floretoles, fucoles, fucofloretoles, ecoles y carmaloles.

Ejemplos de estos compuestos son el fucodifloretol G del alga Ecklonia cava,[5]​ el ecol aislado de especies de Ecklonia[6]​ o el florofucofuroecol-B de Eisenia arborea.[7]​

Se desconoce la razón por la que las algas pardas producen florotaninos.Estos compuestos pueden tener un papel importante en la defensa del organismo, en la dinámica de sus recursos,[8]​ como secuestrantes de metales,[9]​ como protección contra la luz o radiación UV[10]​ o como alguicidas contra dinoflagelados.[11]​

Referencias

  1. ↑ Phlorotannin allocation among tissues of northeastern Pacific kelps and rockweeds. Kathryn L. Van Alstyne, J. Phycol., 1999, 35, pp. 483–492
  2. ↑ Seasonal variation of phlorotannin in sargassacean species from the coast of the Sea of Japan. Kamiya Mitsunobu, Nishio Takeshi, Yokoyama Asami, Yatsuya Kousuke, Nishigaki Tomokazu, Yoshikawa Shinya and Ohki Kaori, Phycological Research, Volume 58, Number 1, January 2010, pp. 53-61
  3. ↑ Local and chemical distribution of phlorotannins in brown algae. Toshiyuki Shibata, Shigeo Kawaguchi, Yoichiro Hama, Masanori Inagaki, Kuniko Yamaguchi and Takashi Nakamura, Journal of Applied Phycology, Volume 16, Number 4, pp. 291-296, doi 10.1023/B:JAPH.0000047781.24993.0a
  4. ↑ Quantitative studies on brown algal phenols. II. Seasonal variation in polyphenol content of Ascophyllum nodosum (L.) Le Jol. and Fucus vesiculosus (L.). Mark A. Ragan and Arne Jensen, Journal of Experimental Marine Biology and Ecology, Volume 34, Issue 3, 1978, pp. 245-258, doi 10.1016/S0022-0981(78)80006-9
  5. ↑ «Isolation of a New Phlorotannin, Fucodiphlorethol G, from a Brown Alga Ecklonia cava. Young Min Ham, Jong Seok Baik, Jin Won Hyun and Nam Ho Lee, Bull. Korean Chem. Soc. 2007, Vol. 28, No. 9, 1595». Archivado desde el original el 25 de abril de 2012. Consultado el 31 de enero de 2012. 
  6. ↑ Protective effect of phlorotannin components phloroglucinol and eckol on radiation-induced intestinal injury in mice. Changjong Moon, Sung-Ho Kim, Jong-Choon Kim, Jin Won Hyun, Nam Ho Lee, Jae Woo Park and Taekyun Shin, Phytotherapy Research, Volume 22, Issue 2, February 2008, pp. 238–242
  7. ↑ Isolation of a new anti-allergic phlorotannin, phlorofucofuroeckol-B from an edible brown alga, Eisenia arborea. Yoshimasa Sugiura, Kohji Matsuda, Yasuhiro Yamada, Masashi Nishikawa, Kazufumi Shioya, Hirotaka Katsuzaki, Kunio Imai and Hideomi Amano, Biosci. Biotechnol. Biochem., 70, 60417-1-5, 2006
  8. ↑ Induction of phlorotannin production in a brown alga: defense or resource dynamics? Veijo Jormalainen, Tuija Honkanen, Riitta Koivikko and Janne Eränen, OIKOS 103, 2003, pp. 640–650
  9. ↑ «Lack of phlorotannin induction in the brown seaweed Ascophyllum nodosum in response to increased copper concentrations. Toth G. and Pavia H. Marine ecology. Progress series, 2000, vol. 192, pp. 119-126». Archivado desde el original el 6 de septiembre de 2012. Consultado el 31 de enero de 2012. 
  10. ↑ Influence of light and nitrogen on the phlorotannin content of the brown seaweeds Ascophyllum nodosum and Fucus vesiculosus. Henrik Pavia and Gunilla B. Toth, Hydrobiologia, Volume 440, Numbers 1-3, pp. 299-305
  11. ↑ Algicidal effect of phlorotannins from the brown alga Ecklonia kurome on dinoflagellates. Koki Nagayama, Toshiyuki Shibata, Ken Fujimoto, Tuneo Honjo and Takashi Nakamura, Aquaculture, Volume 218, Issues 1-4, 27 March 2003, pp. 601-611, doi 10.1016/S0044-8486(02)00255-7

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