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  2. Photochemical Reflectance Index - Wikipedia

    en.wikipedia.org/wiki/Photochemical_reflectance...

    The PRI is sensitive to changes in carotenoid pigments (e.g. xanthophyll pigments) in live foliage. Carotenoid pigments are indicative of photosynthetic light use efficiency, or the rate of carbon dioxide uptake by foliage per unit energy absorbed. As such, it is used in studies of vegetation productivity and stress.

  3. Photosynthetic pigment - Wikipedia

    en.wikipedia.org/wiki/Photosynthetic_pigment

    Phaeophytin a: [1] a gray-brown pigment; Phaeophytin b: [1] a yellow-brown pigment; Chlorophyll a: a blue-green pigment; Chlorophyll b: a yellow-green pigment; Chlorophyll a is the most common of the six, present in every plant that performs photosynthesis. Each pigment absorbs light more efficiently in a different part of the electromagnetic ...

  4. Anthocyanin - Wikipedia

    en.wikipedia.org/wiki/Anthocyanin

    Content of anthocyanins in the leaves of colorful plant foods such as purple corn, blueberries, or lingonberries, is about ten times higher than in the edible kernels or fruit. [41] [42] The color spectrum of grape berry leaves may be analysed to evaluate the amount of anthocyanins.

  5. Cyanidin - Wikipedia

    en.wikipedia.org/wiki/Cyanidin

    Cyanidin is a natural organic compound.It is a particular type of anthocyanidin (glycoside version called anthocyanins).It is a pigment found in many red berries including grapes, bilberry, blackberry, blueberry, cherry, chokeberry, cranberry, elderberry, hawthorn, loganberry, açai berry and raspberry. [1]

  6. Violaxanthin - Wikipedia

    en.wikipedia.org/wiki/Violaxanthin

    Violaxanthin is a xanthophyll pigment with an orange color found in a variety of plants. Violaxanthin is the product of the epoxidation of zeaxanthin where the oxygen atoms are from reactive oxygen species (ROS). Such ROS's arise when a plant is subject to solar radiation so intense that the light cannot all be absorbed by the chlorophyll. [2]

  7. Xanthophyll - Wikipedia

    en.wikipedia.org/wiki/Xanthophyll

    In higher plants, there are three carotenoid pigments that are active in the xanthophyll cycle: violaxanthin, antheraxanthin, and zeaxanthin. During light stress, violaxanthin is converted, i.e. reduced, to zeaxanthin via the intermediate antheraxanthin, which plays a direct photoprotective role acting as a lipid-protective anti-oxidant and by ...

  8. Delphinidin - Wikipedia

    en.wikipedia.org/wiki/Delphinidin

    Delphinidin (also delphinidine [1] [2]) is an anthocyanidin, a primary plant pigment, and also an antioxidant. [3] Delphinidin gives blue hues to flowers in the genera Viola and Delphinium. It also gives the blue-red color of the grape variety Cabernet Sauvignon, and can be found in cranberries and Concord grapes as well as pomegranates, [4 ...

  9. Zeaxanthin - Wikipedia

    en.wikipedia.org/wiki/Zeaxanthin

    Zeaxanthin is the pigment that gives paprika, corn, saffron, wolfberries (goji), and many other plants their characteristic colors of red, orange or yellow. [2] [18] Spirulina is also a rich source and can serve as a dietary supplement. [25] Zeaxanthin breaks down to form picrocrocin and safranal, which are responsible for the taste and aroma ...