"Philadelphians, it found, liked their butter lightly salted, with a light straw color, whereas New Englanders preferred more salt and a deeper yellow coloration".
They examined pairs of nearby trees, one with bright yellow coloration, the other with green leaves.
A photoreaction converts a lignin derivative into a benzofuran, which gives a yellow coloration.
Unlike the other red-breasted birds, one had yellow coloration — a possible sign of disease, the two agreed.
Recently, it has been elucidated that aureusidin synthase (AUS), a homolog of plant polyphenol oxidase (PPO), plays a key role in the yellow coloration of snapdragon flowers.
An example is when a conspicuous pattern, such as the black and yellow coloration of many wasps and bees, advertises to a predator that an animal is unpalatable or poses special dangers.
In addition, there is a striking contrast between the black-and-white coloration of mature male blackbucks and the reddish yellow coloration of females and immature males a much greater contrast than is found in any of the blackbuck's tribal relatives.
It was alleged that this deep yellow coloration of natural butter was universally produced by the use of either Wells-Richardson's compound or some other coloring ingredient, which did not change the taste of the butter, none of which were injurious to health.
After molten salt process, a slight yellow coloration was observed.
Terpenoids Presence of triterpenes was detected using Salkowski's test, with Golden yellow coloration as positive indication.
From 200 J/cm2, a strong yellow coloration appeared under the surface inside the host matrix (Figure 7a).
