2012
DOI: 10.5539/jfr.v1n4p1
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Effects of UV-B Radiation on Oxalate Content of Silver Beet Leaves

Abstract: Silver beet (Beta vulgaricus var. cicla) a common vegetable in New Zealand is known to contain high levels of oxalates in the leaves. Silver beet plants were grown in afield trial under glass and perspex sheets which filtered sunlight reaching the plants. After eight weeks of growth, the plants were harvested and the total, soluble and insoluble oxalate content of the leaves of the plants grown under the two filter treatments and a no-frame control were measured. Perspex allowed the transmission of UV-A, UV-B … Show more

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Cited by 4 publications
(5 citation statements)
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“…It has been reported that ascorbate levels increase in response to UV radiation treatment in certain plants grown in open fields because of ascorbate's role in photoprotection, which indicates that UV radiation may promote the accumulation of oxalate in plants. In 2012, a positive effect of UV‐B on oxalate accumulation was reported by Presswood et al, who shown that removing UV‐B from the light source could significantly reduce the concentration of oxalates in silver beets. In addition to UV light, other types of light affect the accumulation of oxalate acid.…”
Section: Effects Of Light Quality On Phytochemical Accumulationmentioning
confidence: 93%
“…It has been reported that ascorbate levels increase in response to UV radiation treatment in certain plants grown in open fields because of ascorbate's role in photoprotection, which indicates that UV radiation may promote the accumulation of oxalate in plants. In 2012, a positive effect of UV‐B on oxalate accumulation was reported by Presswood et al, who shown that removing UV‐B from the light source could significantly reduce the concentration of oxalates in silver beets. In addition to UV light, other types of light affect the accumulation of oxalate acid.…”
Section: Effects Of Light Quality On Phytochemical Accumulationmentioning
confidence: 93%
“…Como en cada tratamiento quedó un número distinto de individuos, se decidió trabajar en todos los casos con 11 individuos de Oxalis triangularis por cada tratamiento. La extracción se realizó mediante la metodología de Presswood et al [17]. Se utilizó 1g fresco de foliolos que posteriormente se secaron, estos fueron picados aproximadamente 1 mm y puesto en un matraz con 20 ml de HCl 0.2 M. La mezcla se llevó a baño María a 80 °C por 20 min, luego se dejó enfriar a temperatura ambiente por 10 min.…”
Section: Análisis De áCido Oxálicounclassified
“…Esta suposición se basa en otros estudios que probaron que ante FR, la concentración tanto de clorofila como de antocianinas tienden a disminuir [20]. El grupo control en este estudio muestra que las hojas tienen una coloración púrpura debida a la presencia de antocianinas en sus hojas [17,23], por lo que, la perdida de coloración púrpura de los foliolos de Oxalis triangularis pudo haber ocurrido por la disminución de esos pigmentos, ya que este tratamiento tiene lámparas incandescentes infrarrojas que emiten principalmente en FR.…”
Section: Figura 3 Oxalis Triangularis Con Exposición Al A) Control Con Luz Visible Y Bajo Los Tratamientos B) Ir= Luz Visible+ Radiación unclassified
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