Spawn Preparation (About the Department) (2024)

FAQs

What is the layout of spawn preparation? ›

The layout plan of a spawn laboratory should have a total built up area of 19x8x3. 6 m (LxBxH). This area will be divided into different work areas like cooking/autoclaving room, inoculation room, and incubation room, washing area, store, office and one cold storage. Cold storage room of 3x3 x3.

For preparation of spawn, the fungus from the culture is then grown on grains or any other suitable medium. spawn. Wheat grains are the most commonly used substrate. The wheat grains are boiled partly or half cooked after soaking overnight so that the grains become slightly soft but do not burst.

The seeds used for growing fruiting bodies of mushroom are generally referred to as spawns. More precisely, spawn is the mycelia of mushroom species with its seed substrate. In fact, it is a fungal growth medium impregnated with mycelia fragments of mushroom which acts as inoculum for mushroom cultivation.

The process of spawning typically involves females releasing ova (unfertilized eggs) into the water, often in large quantities, while males simultaneously or sequentially release spermatozoa (milt) to fertilize the eggs.

Mother spawn is nothing but the mushroom fungus grown on a grain based medium. Among the several substrate materials tested by TNAU, Coimbatore, sorghum grains are the best substrate for excellent growth of the fungus. Disease- free sorghum grains are used as substrate for growing the spawn materials.

Spawning represents the initiation of larval dispersal and places offspring in a specific advective and dispersive flow field, which is critical to determining the outcome of transport and the arrival of offspring at appropriate juvenile habitats. From: Stock Identification Methods (Second Edition), 2014.

The soil used for casing process should be free of stones and stubble and has to be sterilized before casing. The soil is taken in a mud pot or a vessel and steamed in an autoclave or pressure for 45 minutes. (Soil can also be mixed with a little quantity of water and sterilized for this purpose).

Spawn in computing refers to a function that loads and executes a new child process. The current process may wait for the child to terminate or may continue to execute concurrent computing. Creating a new subprocess requires enough memory in which both the child process and the current program can execute.

Bed spawns:

The method of preparation of bed spawn was same as that of mother spawn. The cooking, filling and sterilization were similar to that of mother spawn. Instead of saline bottles, polypropylene bags were used. After sterilization, the bags are taken for inoculation.

In the spawn-production process, mycelium from a mycelial culture is placed onto steam-sterilized grain, and in time the mycelium completely grows through the grain. This grain/mycelium mixture is called spawn, and spawn is used to "seed" mushroom compost.

What are the equipment required for spawn production? ›

A grain boiler is operated by 6 kW electric power. The mixer is for mixing boiled grains with chalk powder. The bag filler for spawn and innoculator for mother spawn has also been developed. These machineries have been developed for 100 kg per day of spawn production.

The six steps are Phase I composting, Phase II composting, spawning, casing, pinning, and cropping. These steps are described in their naturally occurring sequence, emphasizing the salient features within each step. Compost provides nutrients needed for mushrooms to grow.