Volume 12 Part 1 Article 31: A Quick and Efficient Method of Making Mushroom Spawn

Volume 12 Part 1 Article 31
Year 1989
Title: A Quick and Efficient Method of Making Mushroom Spawn
Authors: Q.Y. Yang and S.C. Jong

Abstract:

There are a variety of methods for production of mushroom spawn including grain spawn, sawdust spawn and liquid spawn (Jong 1985; Laniece et al. 1966; Miller & Jong 1987). Because grains favor rapid and vigorous development of the mycelium of various mushrooms, the grain spawn is universally used by mushroom growers throughout the world today.

Once the grain is fully colonized by mushroom mycelia, the grain spawn can be used as a spawn master for the further production of grain spawn or as a direct inoculum of bulk substrates for the production of mushrooms. Using the mixed spawning method, the grain spawn can be sown throughout the substrate instead of only near the surface of the substrate, causing a faster growth of spawn to prevent competitive organisms from becoming established in the substrate and allowing earlier production of mushrooms with a high yield. Since the manufacture of the grain spawn involves the use of a grain culture as the spawn master, the time required for the production of such spawn is liable to age quickly.

With the modern fermentation technique of making liquid spawn, the hyphal cells of the mushroom can divide rapidly and the production time is about ten times quicker than that of making the grain spawn (Laniece et al. 1966; Stamets & Chilton 1984). However, the liquid spawn is not suitable for the direct inoculation of the bulk substrate and is inconvenient for storage and transportation. Therefore, the technique has not yet been used in production by the mushroom spawn industry.

This study employs the liquid spawn as a spawn master for the production of grain spawn. The technique combines the advantages of both the liquid and grain spawn, avoids their disadvantages, shortens the time for manufacture and improves the quality of mushroom spawn.

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