Question

Agar-Agar is obtained from

• A. Gigartina
• B. Gefidium
• C. Gracillaria
• D. All of these

Hint:

Agar-agar is a plant-based gelatin substance extracted from seaweed, Red algae.

Answer 1

The Correct Option is D

Agar-agar is a jelly-like substance that is a non-nitrogenous carbohydrate. It consists of two polysaccharides - agarose and agaropectin. 

• Agar agar is obtained from red algae like Gracillaria, Gefidiurn, and Gigartinia. 
• It was discovered by Lady Hesse and used by Robert Koch to solidify culture medium.

Answer 2

Agar-agar is a product obtained from numerous algae, mainly belonging to the group of red algae. 

• These algae are very small, have a reddish stem, and are rich in mucilage, a type of fibre. 
• Once they are dried in the sun, then they are extracted by pouring hot water on them.

Therefore, option D) All of these is the correct answer.

Answer 3

Agar agar is a jelly-like substance that is derived from certain types of red seaweed, including Gracilaria, Gelidium, and Gigartina. 

• These seaweeds contain a specific type of polysaccharide that can be extracted and processed to form agar agar.
• The process of extracting agar agar typically involves boiling the seaweed in water to release the agar, which is then filtered to remove impurities. 
• The resulting liquid is cooled to allow the agar to solidify, and then it is cut into blocks or flakes.

Agar agar is widely used as a gelling agent in food, pharmaceuticals, and scientific research. It is often used in place of animal-based gelatins because it is vegan and vegetarian-friendly. Additionally, agar agar has superior gelling properties and can withstand high temperatures and acidic conditions, which makes it a versatile ingredient in a variety of applications.

Note: Agar-agar is a plant-based gelatin substance extracted from seaweed, Red algae. It is used for different purposes in cooking, industrial freezing, bacterial culture media, cosmetics, medicines, canning (meat, fish, and poultry), etc.