Slice of prickly pear (fruit of Opuntia) when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight from a supermarket. College Station, Texas

🎞️ #3614-09
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College Station, Texas, September 3 - 5, 2024

Album 3614: College Station, Texas, September 3 - 5, 2024

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The image presents two photographs of a prickly pear fruit slice, showcasing its appearance under regular daylight and when illuminated by a 365 nm ultraviolet (UV-A) blacklight from a supermarket.

**Regular Daylight Photograph:**

* The top photograph features a greenish-yellow slice of prickly pear with numerous brown spots.
* These dark spots are likely the seeds or glochids within the fruit.

**Ultraviolet (UV-A) Blacklight Photograph:**

* The bottom photograph reveals the same slice under UV-A light, highlighting the presence of blue fluorescence around the seeds or glochids.
* This fluorescence suggests that these areas may contain compounds that react with ultraviolet radiation, emitting a blue glow in response.

**Key Observations and Implications:**

* The photographs demonstrate the varying appearance of the prickly pear fruit when exposed to different light sources.
* The UV-A blacklight reveals additional details about the fruit's internal structure and composition, potentially aiding in understanding its nutritional or medicinal properties. – AI vision

🇪🇸 Descripción en español / Spanish Description

Un trozo de piña de maguey (fruto de Opuntia) cuando se expone a la luz del día regular y también cuando se ilumina con una luz negra ultravioleta (UV-A) de 365 nm en un supermercado. College Station, Texas, 3 de septiembre de 2024. La imagen presenta dos fotografías de un trozo de fruta de maguey, mostrando su aspecto bajo luz del día regular y cuando se ilumina con una luz negra ultravioleta (UV-A) de 365 nm en un supermercado. **Fotografía de Luz del Día Regular:** * La fotografía superior muestra una rebanada amarillo verdosa de piña de maguey con numerosas manchas marrones. * Estas manchas oscuras son probablemente las semillas o glochids dentro de la fruta. **Fotografía de Luz Negra Ultravioleta (UV-A):** * La fotografía inferior revela la misma rebanada bajo luz UV-A, destacando la presencia de fluorescencia azul alrededor de las semillas o glochids. * Esta fluorescencia sugiere que estas áreas pueden contener compuestos que reaccionan con la radiación ultravioleta, emitiendo un brillo azul en respuesta. **Observaciones y conclusiones clave:** * Las fotografías demuestran el aspecto variable de la fruta del maguey cuando se expone a diferentes fuentes de luz. * La luz UV-A revela detalles adicionales sobre la estructura interna y composición de la fruta, lo que podría ayudar en el entendimiento de sus propiedades nutricionales o medicinales. – Spanish translation

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