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Sour - Canvas

Sour - Canvas

Sourness is the taste that detects acidity. The sourness of substances is rated relative to dilute hydrochloric acid, which has a sourness index of 1. By comparison, tartaric acid has a sourness index of 0.7, citric acid an index of 0.46, and carbonic acid an index of 0.06.



The most common foods with natural sourness are fruits, such as lemon, lime, grape, orange, tamarind, and bitter melon. Fermented foods, such as wine, vinegar or yogurt, may have sour taste. Children show a greater enjoyment of sour flavors than adults, and sour candy containing citric acid or malic acid is common.



Sour taste is detected by a small subset of cells that are distributed across all taste buds called Type III taste receptor cells. H+ ions (protons) that are abundant in sour substances can directly enter the Type III taste cells through a proton channel. This channel was identified in 2018 as otopetrin 1 (OTOP1). The transfer of positive charge into the cell can itself trigger an electrical response. Some weak acids such as acetic acid, can also penetrate taste cells; intracellular hydrogen ions inhibit potassium channels, which normally function to hyperpolarize the cell. By a combination of direct intake of hydrogen ions through OTOP1 ion channels (which itself depolarizes the cell) and the inhibition of the hyperpolarizing channel, sourness causes the taste cell to fire action potentials and release neurotransmitter.
  • Looking to add a little flair to your room or office? Look no further - this canvas print has a vivid, fade-resistant print that you're bound to fall in love with.

     

    • Acid-free, PH-neutral, poly-cotton base
    • 20.5 mil (0.5 mm) thick poly-cotton blend canvas
    • Canvas fabric weight: 13.9 oz/yd2(470 g/m²)
    • Fade-resistant
    • Hand-stretched over solid wood stretcher bars
    • Durable smooth medium gloss satin finish (US & MX)
    • Durable semi-matte finish (EU ONLY)
    • 1.5″ (3.81 cm) deep
    • Mounting brackets included
    • Blank product in the US sourced from the US
    • Blank product in the EU sourced from Latvia
    • Due to many variations amongst different device screens, colors may vary.

     

PriceFrom $72.00