A method for determining a level of one or more live microbes in a sample of a Cannabis plant includes (a) introducing a DNase enzyme into a sample including (i) Cannabis plant matrix derived from lysed cells of a Cannabis plant and (ii) live microbial cells including microbial genomic DNA, (b) introducing an anionic detergent into the sample, where the anionic detergent is in an amount effective to inactivate the DNase enzyme in the sample and lyse the live microbial cells in the sample, (c) introducing a known quantity of control DNA into the sample, (d) contacting the sample with a plurality of polynucleotide capture agents, (e) isolating the plurality of polynucleotide capture agents, thereby isolating polynucleotides from the microbial genomic DNA and/or control DNA in the sample, and (f) amplifying at least a portion of polynucleotides from the microbial genomic DNA isolated in step (e).

An organic solid-state fermentation enzyme formulation and an organic plant protease hydrolysate, and preparation methods therefor. The organic solid-state fermentation enzyme formulation is prepared by solid-state fermentation of protease-producing microorganisms, wherein the organic solid-state fermentation enzyme formulation comprises neutral protease, acidic protease, alkaline protease, glucoamylase, and cellulase. By means of using the protease-producing microorganisms to perform solid-state fermentation on organic plant raw materials, the organic solid-state fermentation enzyme formulation rich in the acidic protease, the neutral protease, the alkaline protease, the cellulase, and the glucoamylase is obtained, and then a small amount of additional enzyme is added in the organic solid-state fermentation enzyme formulation, thereby improving the plant proteolysis efficiency by means of an enzyme system synergistic complementary effect.

This disclosure provides expression systems comprising secretion signals that promote production and/or secretion of proteins of interest, as well as one or more polynucleotides encoding chaperone proteins (e.g., CRT and/or PDIA3) which, as demonstrate herein, enhance production and/or secretion of proteins. Moreover, genetically modified host cells comprising these expression systems are capable of producing high levels of protein of interest, such as bovine lactoferrin (bLF), bovine lactoglobulin (bLG), or ovalbumin (Ova).