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This class of pigments is found only in the Caryophyllales (including cactus and amaranth), and never co-occur in plants with anthocyanins. [5] Betalains are responsible for the deep red color of beets. Anthocyanins (literally "flower blue") are water-soluble flavonoid pigments that appear red to blue, according to pH. They occur in all tissues ...
Explanation of this phenomenon we can find in the molar ratio of co-pigment (acylquninic acid) to anthocyanin, which is much higher in the blue cells, also the level of Al3+ ions is higher in the blue flowers. Additionally, the pH of blue cell is around 4,1 and red is lower around 3,3.
Roughly 2% of all hydrocarbons fixed in photosynthesis are converted into flavonoids and their derivatives, such as the anthocyanins. Not all land plants contain anthocyanin; in the Caryophyllales (including cactus, beets, and amaranth), they are replaced by betalains. Anthocyanins and betalains have never been found in the same plant. [10] [11]
It is an herbaceous annual or perennial twining liana growing to 2–4 m (7–13 ft) tall. The leaves are spirally arranged, 3–7 cm (1–3 in) long with a 1.5–6 cm (1 ⁄ 2 – 2 + 1 ⁄ 2 in) long petiole.
Notable for deep blue-purple pigmentation, the skin of Norton grapes has a higher content of total anthocyanins (888 mg per 100 g) than other purple grape cultivars, Concord or Marechal Foch grapes. [8] Anthocyanins are the largest group of water-soluble pigments in the plant kingdom and belong to the family of compounds known as polyphenols.
Home Depot will pay nearly $2 million to settle a civil enforcement claim from California district attorneys that the home improvement company was engaging in false advertising and unfair competition.
The flowers are most commonly an intense blue colour and arranged in flowerheads (capitula) of 1.5–3 cm diameter, with a ring of a few large, spreading ray florets surrounding a central cluster of disc florets. The blue pigment is protocyanin, which in roses is red. [5] Fruits are approx. 3.5 mm long with 2–3 mm-long pappus bristles. [6]
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