Nutrient agar ( CM0003B) and nutrient broth ( CM0001B) from Oxoid share almost the same medium composition. The main difference between them is that nutrient agar contains a solidifying agent, agar powder that causes the medium to solidify in room temperature, whereas nutrient broth remains in liquid form. Example of nutrient agar in a petri dish. Agar, Kappa Carrageenan, Xanthan Gum gels at ph > 9; moderately alcohol-tolerant; viscosity increases best hydrated 158 “F when heated or at concentration of 1% or higher; doesn’t melt Agar powder, also known as kanten, is a gelatinous substance derived from a South East Asian seaweed. It’s used in science (for example, biology), as a filler in paper sizing fabric, and as a brewing clarifying ingredient. Agar can also be used as a laxative and an appetite suppressant (it contains 80 percent fiber). Agar is isolated from the algae as an amorphous and translucent product sold as powder, flakes, or bricks. Although agar is insoluble in cold water, it absorbs as much as 20 times its own weight. It dissolves readily in boiling water; a dilute solution is still liquid at 42 °C (108 °F) but solidifies at 37 °C (99 °F) into a firm gel. Vay Tiền Trả Góp 24 Tháng.

difference between agar and agar agar