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  2. List of purification methods in chemistry - Wikipedia

    en.wikipedia.org/wiki/List_of_purification...

    Chromatography employs continuous adsorption and desorption on a packed bed of a solid to purify multiple components of a single feed stream. In a laboratory setting, mixture of dissolved materials are typically fed using a solvent into a column packed with an appropriate adsorbent, and due to different affinities for solvent (moving phase ...

  3. Paper chromatography - Wikipedia

    en.wikipedia.org/wiki/Paper_chromatography

    Paper chromatography is one method for testing the purity of compounds and identifying substances. Paper chromatography is a useful technique because it is relatively quick and requires only small quantities of material. Separations in paper chromatography involve the principle of partition.

  4. Biochemistry - Wikipedia

    en.wikipedia.org/wiki/Biochemistry

    Most organisms share element needs, but there are a few differences between plants and animals. For example, ocean algae use bromine, but land plants and animals do not seem to need any. All animals require sodium, but is not an essential element for plants. Plants need boron and silicon, but animals may not (or may need ultra-small amounts).

  5. Southern blot - Wikipedia

    en.wikipedia.org/wiki/Southern_blot

    [8] DNA Isolation: The DNA to be studied is isolated from various tissues. The most suitable source of DNA is known as blood tissue. However, it can be isolated from different tissues (hair, semen, saliva, etc.). DNA digestion: Restriction endonucleases are used to cut high-molecular-weight DNA strands into smaller fragments. This is done by ...

  6. Phytochemistry - Wikipedia

    en.wikipedia.org/wiki/Phytochemistry

    Phytochemistry is the study of phytochemicals, which are chemicals derived from plants.Phytochemists strive to describe the structures of the large number of secondary metabolites found in plants, the functions of these compounds in human and plant biology, and the biosynthesis of these compounds.

  7. Centrifugation - Wikipedia

    en.wikipedia.org/wiki/Centrifugation

    Low-speed centrifuges are used to harvest chemical precipitates, intact cells (animal, plant and some microorganisms), nuclei, chloroplasts, large mitochondria and the larger plasma-membrane fragments. Density gradients for purifying cells are also run in these centrifuges.

  8. The Variation of Animals and Plants Under Domestication

    en.wikipedia.org/wiki/The_Variation_of_Animals...

    The Complete Works of Charles Darwin Online: The Variation of Animals and Plants under Domestication, An introduction by R. B. Freeman: Bibliography with links to text and images of all editions of The Variation of Animals and Plants under Domestication, including translations into French, German, Italian, and Polish.

  9. Polyphenol - Wikipedia

    en.wikipedia.org/wiki/Polyphenol

    Absolute concentrations of total phenols in plant tissues differ widely depending on the literature source, type of polyphenols and assay; they are in the range of 1–25% total natural phenols and polyphenols, calculated with reference to the dry green leaf mass. [35] Polyphenols are also found in animals.