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Light plays a significant role in regulating the growth and development of plants. In addition to providing energy for photosynthesis, light provides other important cues to regulate a range of developmental and physiological responses in plants.
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Plants and other photosynthetic organisms comprise pigments capable of absorption of direct sunlight. These pigments are present in the reaction center - the main site of photochemical reactions as well as in the antenna complex. Under average light conditions, the rate at which reaction center pigments absorb light is far below the electron transport chain's capacity. As a result, the reaction center alone cannot provide enough energy to drive photosynthesis. The photosynthetic efficiency can...
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At the molecular level, visual signals trigger transformations in photopigment molecules, resulting in changes in the photoreceptor cell's membrane potential. The photon's energy level is denoted by its wavelength, with each specific wavelength of visible light associated with a distinct color. The spectral range of visible light, classified as electromagnetic radiation, spans from 380 to 720 nm. Electromagnetic radiation wavelengths exceeding 720 nm fall under the infrared category,...
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The color of the skin is influenced by a number of pigments, including melanin, carotene, and hemoglobin. Recall that melanin is produced by cells called melanocytes, which are found scattered throughout the stratum basale of the epidermis. The melanin is transferred to the keratinocytes via melanosomes.
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Vitamins, derived from the Latin word for life, are essential organic substances required in small quantities for optimal growth and overall well-being. Unlike other organic nutrients, vitamins don't act as sources of energy or building materials but rather facilitate these nutrients' utilization by the body. Vitamins are predominantly coenzymes, assisting enzymes in specific chemical actions, like the oxidation of glucose for energy involving B vitamins. Most vitamins are not produced...
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Measurement of Carotenoids in Perifovea using the Macular Pigment Reflectometer
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Carotenoids.

Volker Böhm1

  • 1Institute of Nutritional Sciences, Friedrich Schiller University, Dornburger Str. 25-29, 07743 Jena, Germany. volker.boehm@uni-jena.de.

Antioxidants (Basel, Switzerland)
|November 2, 2019
PubMed
Summary

Carotenoids are natural pigments with over 750 known compounds. These vital compounds play crucial roles in plant and animal life, impacting health and coloration.

Area of Science:

  • Biochemistry and Organic Chemistry: Focus on the diverse structures and chemical properties of carotenoids.

Background:

  • Carotenoids are a vast class of natural pigments, with over 750 identified compounds.
  • These molecules are essential in various biological processes, including photosynthesis and vision.

Discussion:

  • Exploring the biosynthesis pathways and metabolic functions of different carotenoid types.
  • Investigating the role of carotenoids as antioxidants and their impact on cellular health.

Key Insights:

  • Carotenoid diversity extends beyond common examples like beta-carotene, encompassing a wide array of structures.
  • Understanding carotenoid functions provides insights into evolutionary biology and nutritional science.

Outlook:

  • Future research directions include exploring novel carotenoids and their therapeutic potentials.

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