+ Site Statistics
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

Quantifying the vitamin D3 synthesizing potential of UVB lamps at specific distances over time

Quantifying the vitamin D3 synthesizing potential of UVB lamps at specific distances over time

Zoo Biology 29(6): 741-752

The purpose of this study was to quantify the ultraviolet B (UVB) output and in vitro previtamin D(3) synthesis over time from various artificial light sources. Three incandescent lamps, T-Rex Active UVHeat 160 watt spot, T-Rex Active UVHeat 160 watt flood, and ZooMed PowerSun 160 watt flood, and two 1.2 m fluorescent lamps, Sylvania Blacklight 350 BL and ZooMed Reptisun 5.0, were studied. Total UVB irradiance and concentration of previtamin D synthesized using an in vitro ampoule model were quantified initially and at monthly intervals for 1 year. Incandescent lamps were measured at distances of 0.9 and 1.5 m while fluorescent lamps were measured at distances of 30.5 and 45.7 cm at the lamp's center, using both the radiometer and ampoules. Fluorescent lamp irradiance was also measured at the lamp's ends. Data were analyzed as a repeated measures split-plot in time using SAS with all mean differences determined using Least Squares Means. Incandescent lamp irradiance differences were seen at various distances. The UVHeat lamps had consistently higher previtamin D(3) production and irradiance readings compared with the PowerSun lamp. Reptisun 5.0 was consistently higher in UVB irradiance over Sylvania BL 350 at both 30.5 and 45.7 cm. However, there were no differences when comparing conversion of 7-dehydrocholesterol to previtamin D(3). Irradiance differences were detected between the centers and ends of the fluorescent lamps. Until UVB requirements for vitamin D(3) synthesis in animals are determined, it is impossible to state that one light is superior to another.

Please choose payment method:

(PDF emailed within 0-6 h: $19.90)

Accession: 055316709

Download citation: RISBibTeXText

PMID: 20839282

DOI: 10.1002/zoo.20345

Related references

Retinal light exposure from ophthalmoscopes, slit lamps, and overhead surgical lamps. An analysis of potential hazards. Investigative Ophthalmology and Visual Science 19(9): 1009-1015, 1980

Determining vitamin B12 synthesizing potential of bacteria. Lab Delo 8(12): 26-29, 1962

Effect of vitamin a deficiency on the specific activities of oxalate synthesizing enzymes. Journal of Clinical Biochemistry and Nutrition 11(3): 205-210, 1991

Factors affecting intra- and inter-specific variations in the difference between alert distances and flight distances for birds in forested habitats. Canadian Journal of Zoology y; 80(7): 1212-1220, 2002

Evaluation of the Keitz Method for Quantifying the UV Output of Medium Pressure Mercury Lamps. Ozone: Science and Engineering 34(4): 310-314, 2012

Evaluation of the effectiveness of long-wave ultraviolet irradiation (erythema luminescent lamps) and its comparison with vitamin D2 in prevention of vitamin D deficiency. Gigiena i Sanitariia 22(6): 3-10, 1957

Vitamin C alters the amount of specific endoplasmic reticulum associated proteins involved in lipid metabolism in the liver of mice synthesizing a nonfunctional Werner syndrome (Wrn) mutant protein. Plos one 13(3): E0193170, 2018

Quantifying variety-specific heat resistance and the potential for adaptation to climate change. Global Change Biology 22(8): 2904-2912, 2016

Quantifying the Kinetic Residence Time as a Potential Complement to Affinity for the Aptamer Selection. Journal of Physical Chemistry. B 122(35): 8380-8385, 2018

Real-time PCR for quantifying Haemonchus contortus eggs and potential limiting factors. Parasitology Research 101(1): 71-76, 2007

Symposium: Vitamin D Insufficiency: A Signifcant Risk Factor in Chronic Diseases and Potential Disease-Specific Biomarkers of Vitamin D Sufficiency. The Journal of Nutrition 135(2): 1-37, 2005

Quantifying Intermembrane Distances with Serial Image Dilations. Journal of Visualized Experiments 2018(139):, 2018

Transcription-Specific Assay for Quantifying mRNA: A Potential Replacement for Reporter Gene Assays. Journal of Biomolecular Screening 1(3): 119-121, 1996

Quantifying leaf water potential for scheduling irrigation of wheat under specific soil climate conditions. South African Journal of Plant and Soil 7(1): 68-71, 1990

Comparison of fluorescent lamps, high pressure mercury halogen lamps and high pressure sodium vapour lamps in raising tomato plants. Gartneryrket 67(1): 15-17, 1976