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Define Hydroxybenzoic acid and Hydroxycinnamic acid?
Hydroxybenzoic acid: e.g. ellagic and gallic acids, which are hydrolyzable tannins, present in berries and nuts.
Hydroxycinnamic acid: e.g. caffeic and ferulic acids, which are heat-sensitive. Caffeic acid is a precursor of lignin. Caffeic with qunic acid gives chlorogenic acid. They occur in fruits, vegetables notably seeds, coffee beans, grains, sunflower seeds. Among these, curculnin and chlorogenic ncid have been studied more. Anticarcinogenic effects are attributed to caffeic and ferulic acid. They may act in two ways:
a) Prevent formation of carcinogens from precursors, and
b) Block reaction of carcinogens with critical cellular macroinolecules.
Changes in the Ions The concentration of potassium, phosphate and nitrate declined significantly in the bathing medium within four days. The concentration of so
What are cotyledons? Cotyledons, or seed leaves, are structures formed by the embryo of angiosperms to absorb nutrients from the endosperm and to keep and transfer these nutrie
ime day 0 day 1 day 3 day 4 day 5 day 7 count blank 7 10 5 14 9 8 low 45&49 64&70 62&69 75&79 80&82 68&72
what are the 3 main excretory produces of mammals?
what is the branches of applied?
Q. What is the name of an RNA sequence that codifies one amino acid? Each sequence of three nitrogen-containing basis of RNA that codifies one amino acid is called a codon. The
Methods to Overcome Incompatibility It has been possible to facilitate the germination of incompatible pollen by extracting pollen wall proteins from compatible pollen and su
Which of the following serves as an actuating signal, or as part of an actuating signal, in a positive feedback system? A. Blood plasma levels of PTH (Parathryroid Hormone).
Q. Which chemical element is the central in the chlorophyll molecule? The chemical element that is the central in the chlorophyll molecule is magnesium. One atom of magnesium
There are several kinds of pollution, main among them are as follows:
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