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Dissolve 1 tbsp agar flakes or 1 tsp agar powder in 4 tbsp hot water. Bring water to a boil. Simmer for 1 to 5 minutes for powder and 10 to 15 minutes for flakes. Mix well with warmed ingredients. Let it cool to set agar. How do you useRead More →

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Agar agar gives a sensation of fullness, leading it to be used in some diet products. In Asia it is also sometimes used as a digestive remedy for upset stomachs. It can also be used as a laxative, or to thicken soups, sauces or preserves. Is agar agar same asRead More →

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MacConkey Agar (MAC) is a selective and differential medium designed to isolate and differentiate enterics based on their ability to ferment lactose. Bile salts and crystal violet inhibit the growth of Gram positive organisms. Lactose provides a source of fermentable carbohydrate, allowing for differentiation. Is E coli positive on MacConkeyRead More →

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For what is MacConkey Agar selective and differential? Selective: for Gram-negative bacteria because bile salts and crystal violet inhibit the growth of Gram-positive bacteria. Differential: based on ability to ferment lactose (bacteria that can ferment lactose cause a drop in pH which turns indicator pink). Why is MacConkey agar MacRead More →

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Tryptic soy broth or Trypticase soy broth (frequently abbreviated as TSB) is used in microbiology laboratories as a culture broth to grow aerobic bacteria. … One of the components of Tryptic soy broth is Phytone, which is an enzymatic digest of soybean meal. Is tryptic soy broth selective or differential?Read More →