METHODS FOR CONTROLLING GEOMETRIC REGULARITY AND HOMOGENEITY OF AERIAL MYCELIUM TOPOLOGIES AND PRODUCTS OF AERIAL MYCELIUM WITH GEOMETRICALLY REGULAR OR HOMOGENEOUS TOPOLOGIES
This application relates to a method for growing aerial mycelium with a regular growth pattern and products of aerial mycelium biopolymers with regular growth patterns. For example, a regular growth pattern can include a homogeneous growth topology or a geometrically regular pattern of bulbous forms. As further examples, the method for affecting growth topology can include controlling environmental conditions or using a topology adjustment layer.
1 . A method of growing an aerial mycelium biopolymer comprising:
providing an inoculated substrate, the inoculated substrate comprising:
a first substrate; and
a first spawn interspersed throughout the first substrate, the first spawn comprising a second substrate for fungal growth and a first fungus;
providing a second spawn comprising a third substrate for fungal growth and a second fungus; and
positioning the second spawn in a growth pattern approximately parallel to an outer surface of the inoculated substrate, wherein the growth pattern is configured to affect a growth topology of aerial mycelium growing from the first spawn and the second spawn.
2 . The method of claim 1 , wherein the growth pattern is configured to increase the homogeneity of the growth topology.
3 . The method of claim 1 , wherein the first spawn comprises a solid fungal inoculum.
4 . The method of claim 1 , further comprising forming a layer of uninoculated substrate on at least one of the inoculated substrate and the second spawn, wherein the uninoculated substrate comprises a fourth substrate without substantially any fungus.
5 . The method of claim 4 , wherein forming the layer of uninoculated substrate comprises forming a first layer of uninoculated substrate on the inoculated substrate and forming a second layer of uninoculated substrate on the second spawn.
6 . The method of claim 1 , wherein positioning comprises positioning the second spawn directly onto the outer surface of the inoculated substrate.
7 . The method of claim 1 , wherein the method further comprises providing a first topology adjustment layer, wherein the first topology adjustment layer comprises one or more openings.
8 . The method of claim 7 , wherein positioning further comprises:
positioning the first topology adjustment layer adjacent to the outer surface of the inoculated substrate,
wherein the one or more openings of the first topology adjustment layer form the growth pattern; and
spreading the second spawn across the one or more openings of the first topology adjustment layer.
9 . The method of claim 8 , wherein positioning further comprises removing the first topology adjustment layer.
10 . The method of claim 7 , wherein the one or more openings of the first topology adjustment layer comprise a plurality of holes in a grid pattern across the first topology adjustment layer.
11 . The method of claim 7 , further comprising providing a second topology adjustment layer.
12 . The method of claim 7 , wherein positioning further comprises positioning the first topology adjustment layer adjacent to the outer surface of the inoculated substrate, wherein one or more of the one or more openings of the first topology adjustment layer comprise perforations, and wherein the first topology adjustment layer is configured to allow for growth through the perforations and further affect the growth topology of aerial mycelium growing from the first spawn and the second spawn.
13 . The method of claim 1 , further comprising:
placing the inoculated substrate and the second spawn into an incubation chamber;
maintaining the incubation chamber with a predetermined growth environment of humidity, temperature, carbon dioxide content and oxygen content sufficient to produce an aerial mycelium biopolymer consisting essentially of fungal mycelium; and
incubating the inoculated substrate and the second spawn in the incubation chamber for a period of time sufficient to produce the aerial mycelium biopolymer.
14 . The method of claim 13 , wherein the growth topology of aerial mycelium comprises a vertical growth topology and a horizontal growth topology, and wherein maintaining the incubation chamber comprises maintaining the carbon dioxide content within the incubation chamber at a level between about 0.6% to about 7% to affect the vertical growth topology of aerial mycelium.
15 . The method of claim 13 , wherein the growth topology of aerial mycelium comprises a vertical growth topology and a horizontal growth topology, and wherein maintaining the incubation chamber comprises maintaining the humidity by introducing aqueous mist into the incubation chamber at a rate of about 0.01 mg/cm 2 /hr to about 1 mg/cm 2 /hr to affect the vertical growth topology of aerial mycelium.
16 . The method of claim 7 , further comprising growing the aerial mycelium through the one or more openings of the first topology adjustment layer.
17 . The method of claim 16 , further comprising peeling the first topology adjustment layer to separate the aerial mycelium biopolymer from the inoculated substrate.
18 . A method of growing an aerial mycelium biopolymer comprising:
providing an inoculated substrate, the inoculated substrate comprising:
a first substrate; and
a spawn interspersed throughout the first substrate, the spawn comprising a second substrate for fungal growth and a first fungus; and
treating the inoculated substrate to prevent growth of the spawn within an inviable portion and permit growth of any remaining spawn within a viable portion, wherein the viable portion forms a growth pattern configured to affect a growth topology of aerial mycelium growing from the inoculated substrate.
19 . An aerial mycelium biopolymer grown from the method of claim 18 .
20 . An aerial mycelium biopolymer comprising a growth surface, wherein the growth surface has a mean native height, and wherein a coefficient of variation of the mean native height is less than 2.
21 . The aerial mycelium biopolymer of claim 20 , wherein the growth surface comprises a plurality of bulbs forming a preselected pattern.
22 . The aerial mycelium biopolymer of claim 21 , wherein the plurality of bulbs comprises a plurality of regularly-spaced bulbs.
23 . The aerial mycelium biopolymer of claim 21 , wherein the growth surface comprises a plurality of depressions forming the preselected pattern.
24 .- 35 . (canceled)