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Methods and Technical Key Points for Preserving Edible Mushroom Spawn
1. Distilled water method. Suitable for the spawn of oyster mushroom, enoki mushroom, and shiitake mushroom. 1. Preserving oyster mushroom and enoki mushroom spawn. First, move the test-tube spawn that is at the eight-tenths mature stage and awaiting preservation into an inoculation box, and after sterilization, use a medical syringe to inject distilled water through the test-tube stopper until the entire surface of the culture medium is submerged, up to 2 cm from the tube mouth. Seal the tube mouth with mineral wax, and at normal temperature place it upright in a cool, shady place, where it can be preserved for 1-1.5 years. 2. Preserving shiitake mushroom and wood ear mushroom spawn. Use a 150 x 15 mm finger-shaped tube to place solid or
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How to prevent mushroom spawn degeneration? Practical control methods
Spawn degeneration can lead to slow mycelial growth, weakened resistance to the environment, contaminant microorganisms and so on, an earlier or delayed fruiting body formation period, and indistinct flushes of mushrooms. There are many causes of spawn degeneration, among which impure spawn and gene mutation are the main reasons; in addition, excessively high temperatures and mixed cultivation of different strains can all cause spawn degeneration. Measures to prevent spawn degeneration include: ensuring pure culture of the spawn, taking care not to use spawn contaminated by foreign microorganisms, and not cultivating in close proximity connected to each other; strictly controlling the number of subcultures, reducing mechanical damage,
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Comparative Trial of Six Strains in Substitute-Material Cultivation of Lentinula edodes Using Liquid Spawn
In recent years, China's shiitake (Lentinula edodes) production has developed rapidly, with substitute-material cultivation of shiitake being particularly prominent. The traditional solid spawn production technology for shiitake requires a rather cumbersome three-stage process of mother culture, stock culture and cultivation spawn before it can finally be expanded to the production of cultivation bags. Its high labor intensity, cumbersome process, high rate of contaminant mold infection and long growth cycle all greatly restrict the development of shiitake. In this experiment, liquid spawn of 6 shiitake strains was cultured and compared in cultivation, so as to provide a certain theoretical basis for the promotion and application of liquid spawn for shiitake. 1 Materials and Methods 1
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Several New Methods for Reducing the Contamination Rate of Edible Mushroom Spawn
1. Bottled fermented substrate (1cm). The improved method is: above the culture medium, about 4cm from the bottle mouth, fill in 1-2cm of fermented substrate, then sterilize. Because the fermented substrate itself is sterile, after inoculating the spawn, the mycelium quickly covers the upper part of the whole bottle, and the mycelium feeds on the substrate at the same time. The advantage of this method is that contaminant microorganisms can hardly infect the culture medium, and the spawn age is uniform. The contamination rate can be reduced to below 3%. 2. Wheat grain germination method. The improved method is: let the wheat grains germinate before bottling and sterilizing. The storage substances of wheat grains are mainly starch, fat and protein,
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Simple and Practical Methods for Preserving Edible Mushroom Spawn
While domesticating the wild-cultivated oyster mushroom variety "1015", we subjected the strains to salt-tolerance training. This involved salinizing ordinary PDA medium to prepare a solution at a concentration of 1.0%-1.5%, sterilizing it under high pressure for 45-60 minutes, cooling it to make slants, inoculating under sterile conditions, and culturing in an incubator. After the cultures matured, every 10 tubes were grouped together, placed in polyethylene bags, and stored at room temperature for 9 months before subculturing. The survival rate reached over 95%,
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What are the methods for identifying the quality of edible mushroom spawn?
1 Appearance identification. For users without special equipment, the quality of spawn can be judged by the senses, which is the so-called appearance identification. High-quality spawn should have five characteristics: pure, true, strong, moist and fragrant. Pure means the spawn has high purity, no contamination by foreign microorganisms, no patches, no inhibition lines, and no "spawn regression" or "spawn breakage" phenomenon. True means the hyphae are normal and have the authentic morphological characteristics of the parent. For example, the hyphae are pure white, glossy, grow evenly and neatly, connect into blocks, and are elastic. Strong means the hyphae are thick and robust, with vigorous growth, many and dense branches, and on the culture
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Detailed Guide to Producing Wine Cap Mushroom (Stropharia rugosoannulata) Spawn
The production method for Wine Cap mushroom (Stropharia rugosoannulata) spawn is basically the same as that for button mushroom and straw mushroom spawn. Pure cultures can be obtained by tissue isolation and spore isolation; in new growing areas, stock cultures or mother spawn are mainly introduced. The media suitable for Wine Cap mother spawn production are as follows: I. Mother spawn media 1. Maltose yeast agar medium (MYA): soy peptone (soy ton) 1 g, yeast 2 g, maltose 20 g, agar 20 g, add water to 1000 ml. 2. Potato dextrose yeast agar medi
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Detailed Explanation of the Method for Making Shiitake Mushroom Spawn for Field Cultivation in Greenhouses
After the spawn logs are made, place them in the stove for sterilization, keeping them at 100°C for more than 16 hours. When mixing ingredients according to the conventional formula, absolutely do not reduce any ingredient in the formula. The raw materials should be fresh and free of mold. The inoculation time is early December. Before inoculation, seal the inoculation room and disinfect it with potassium permanganate at 7 grams per cubic meter and formalin at 13 milliliters per cubic meter for 6 hours; inoculation personnel must also be disinfected before entering the inoculation room to inoculate, and inoculation should not be done on rainy days. After inoculation is completed, carry out a second disinfection, then close the doors and windows for 3 days. After 3 days, open
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What are the characteristics of common edible mushroom spawn?
I. Characteristics of normal mother spawn: 1. Uniform, vigorous growth, with smooth, plump edges. 2. Consistent, even coloration, with normal pigment secretion. 3. Good growth vigor, with normal speed. 4. Vigorous, robust mycelium, with no antagonism. II. Characteristics of main varieties: 1. Enoki mushroom (Flammulina velutipes): Mycelium pure white, tufted, but the hairs are relatively short like cotton fluff, with white or pale spore powder. 2. Shaggy ink cap mushroom (Coprinus comatus): Mycelium white or slightly pale yellow, tufted, aerial-type mycelium, semi-reclining, mycelial tips clearly visible, myc
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Key Technical Points for Temperature Management During the Spawn-Running Stage of Oyster Mushrooms
When oyster mushroom mycelium grows thick and vigorous, the spawn-running success rate is high; especially in the sterilized-substrate cultivation process, the mycelium has a lower chance of being infected by contaminant microorganisms than other varieties. However, in the raw-material cultivation process, its temperature requirements during the mycelial growth stage are very strict. Therefore, correctly mastering the suitable spawn-running temperature is the key to ensuring the success of raw-material cultivation of oyster mushrooms. Oyster mushroom mycelium grows vigorously at 20°C-30°C and has strong resistance to contaminant microorganisms; even if occasional contamination occurs, the oyster mushroom mycelium can penetrate and consume it, and the spawn runs quickly, with the mycelium
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