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By addition of 10% ethanolic KOH, water and HCl
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∙ 15y ago
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Base hydrolysis of an ester is called?
SAPONIFICATION
Why do you use KOH ethanol for the isolation of piperine and What are their uses?
I assume you mean ethanol + KOH? if so, in order to prevent co-precipitation of piperine and the resin acids, dilute ethanolic KOH is added to the concentrated extract to keep acidic materials in solution as their potassium salts (acid/base rxn occurs). basically it keeps impurities in solution, while piperine precipitates out.
What is the difference between acidic and alkaline hydrolysis?
Acidic hydrolysis: hydrolysis in an acid solution (pH under 7) Basic hydrolysis: hydrolysis in a basic solution (pH above 7)
Is a peptide bond hydrolysis or dehydrates?
hydrolysis
What conditions are necessary for the hydrolysis of sucrose?
in the hydrolysis of sucrose a catalyst such as sucrase must be applied
Base hydrolysis of an ester is called?
SAPONIFICATION
What classes of salts do not undergo hydrolysis?
salts of strong acid and strong base do not undergo hydrolysis
What is salt hydrolysis?
the reaction in which cation or anions of salts reacts with water to produce acid or base is called salt hydrolysis.
Why do you use KOH ethanol for the isolation of piperine and What are their uses?
I assume you mean ethanol + KOH? if so, in order to prevent co-precipitation of piperine and the resin acids, dilute ethanolic KOH is added to the concentrated extract to keep acidic materials in solution as their potassium salts (acid/base rxn occurs). basically it keeps impurities in solution, while piperine precipitates out.
How can the hydrolysis rate of prodrugs be accelerated?
If the base hydrolysis mechanism is important, an electron withdrawing group can be attached to the prodrug. If the acid hydrolysis mechanism is important, an electron donating group can be attacked to the prodrug.
Black pepper extract powder?
Visit Botanical cube official website to provide you with more
What is the chemical compound of ground pepper?
The most important component is piperine.
What is the following best describes a neutralization reaction?
An acid-base reaction that leaves no excess H+ or OH-
Piperine from where you got the commercial preparation for treating your vitiligo?
According to a research conducted at Department of Pharmacy King's College London piperine helps in frequent repigmentaion and its results lasts longer than many other treatments. In this research, researchers first analyzed the herbs and plants used in herbal vitiligo recipes to see if any of the ingredients could stimulate pigment cell multiplication in vitro. You can use herbal recipes which have piperine as its ingredient. Piperine is derived from black pepper so another source of piperine is black pepper. For more information on vitiligo research visit: http://www.vitiligoguide.com/vitiligo-research/
What is the difference between acidic and alkaline hydrolysis?
Acidic hydrolysis: hydrolysis in an acid solution (pH under 7) Basic hydrolysis: hydrolysis in a basic solution (pH above 7)
What chemical gives peppers there hot flavor?
Black pepper contain piperine.
Is a peptide bond hydrolysis or dehydrates?
hydrolysis
