This item has a minimum qty of 13 per supplier requirements.
Egg Yolk Agar (EYA) is an enriched differential Med. used for the presumptive differentiation of Clostridium spp. & other obligate anaerobes. This Med. is prepared, dispensed, & packaged under oxygen-free conditions to prevent the formation of oxidized products prior to use.EYA agar is for the differentiation of clostridia & other obligate anaerobes based on lecithinase, lipase, & proteolytic activity. The nutritive base consists of casein, yeast extract, dextrose, & tryptophan. Hemin & vitamin K are added to improve the growth of anaerobes. A suspension of egg yolk makes the Med. differential. The degradation of lecithin in the egg yolks produces an insoluble opaque precipitate that surrounds the area of growth. An iridescent sheen (oil on water) on the surface of the colony is observed by lipase positive organisms, due to the breakdown of free fats present in the egg yolk.