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Environmental & Microbial DNA/RNA Co-Extraction Kits

Environmental/microbial DNA/RNA co-extraction kits simultaneously purify genomic DNA and total RNA from soil, sediment, water, biofilm, fecal samples, and environmental swabs using bead-beating lysis for unbiased microbial community disruption and PCR inhibitor removal for humic acids and polyphenols. Separating DNA and RNA fractions from one undivided sample enables paired 16S/shotgun metagenomics and metatranscriptomics.

MBP carries Zymo Research ZymoBIOMICS DNA/RNA Miniprep and MagBead kits validated on the 8-species Microbial Community Standard, for registered vendors at Howard Hughes Medical Institute, Vanderbilt University, and MD Anderson Cancer Center. Request a quote by contacting customerservice@mbpinc.net.

Environmental/Microbial

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R1043

Quick-DNA/RNA™ Pathogen MiniPrep Kit

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USD243.39 - USD791.35

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USD173.85 - USD565.25

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R2044

Quick-DNA/RNA™ Water Kit (50 Preps)

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USD719.53

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USD513.95

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R2002

ZymoBIOMICS™ DNA/RNA Mini Kit (50 Preps.)

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USD871.15

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USD622.25

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What are Environmental/Microbial DNA/RNA Co-Extraction Kits?

Environmental/microbial DNA/RNA co-extraction kits simultaneously purify genomic DNA and total RNA from complex natural matrices - soil, sediment, water, biofilm, fecal samples, plant material, and environmental swabs - using bead-beating mechanical lysis that unbiasedly disrupts all microbial cell types in mixed communities (Gram-positive bacteria, Gram-negative bacteria, fungi, protozoa), combined with PCR inhibitor removal steps that address the humic acids, polyphenols, and polysaccharides co-extracted from environmental matrices. Both analytes elute in separate fractions from the same undivided sample, enabling paired metagenomic 16S/ITS amplicon sequencing and metagenomic shotgun sequencing (DNA fraction) with metatranscriptomic mRNA-seq (RNA fraction) from a single extraction. Use an environmental/microbial co-extraction kit when your sample is soil, water, biofilm, sediment, or a complex fecal matrix, and you need both the community composition DNA data and the metabolically active gene expression RNA data from the same physical sample.

What you will find:

Spin-column:

Quick-DNA/RNA™ Water Kit: Designed to isolate low-biomass microbial signatures from water samples, guaranteeing nuclease-free and transfection-quality purity.
Quick-DNA/RNA™ Pathogen MiniPrep: Designed for fast, high-yield extraction of viral and bacterial pathogens from clinical and environmental samples.
ZymoBIOMICS™ DNA/RNA Mini Kit: A reproducibility-validated system employing ultra-high-density BashingBeads™ for impartial lysis and comprehensive community analysis.

How to Choose an Environmental/Microbial DNA/RNA Co-Extraction Kit

Inhibitor Load: Soil Type and Matrix

High-organic-matter soils (peat, forest soils, tropical soils) carry the highest humic acid inhibitor loads. ZymoBIOMICS DNA/RNA kits incorporate OneStep PCR Inhibitor Removal Technology in the wash steps; for heavily inhibited matrices, reduce input to 50-100 mg and verify A260/A230 >= 1.5 on first test extractions. For very high inhibitor soils, the QIAGEN AllPrep DNA/RNA Mini Kit downstream of bead-beating and phenol-phase separation (Okazaki et al. 2023 protocol) achieves higher DNA fragment size (>10-15 kb) for long-read metagenomics.

Spin-Column vs. Magnetic Bead Format

ZymoBIOMICS DNA/RNA Miniprep Kit (spin-column) processes 1-24 samples in a microcentrifuge and delivers separate DNA and RNA fractions by column-switching. ZymoBIOMICS MagBead DNA/RNA processes 96 samples per run on KingFisher Flex, Accuris IsoPure, and AllSheng AutoPure. Choose spin-column for small-batch environmental studies; choose magnetic bead for large cohort microbiome surveys, biobank processing, and studies requiring >48 samples per session.

Separate Fractions vs. Total Nucleic Acid

ZymoBIOMICS DNA/RNA Miniprep Kit delivers separate DNA and RNA fractions by column-switching design -- the preferred format for parallel 16S amplicon sequencing (DNA) and metatranscriptomics (RNA) requiring analyte-specific library preparation workflows. ZymoBIOMICS MagBead DNA/RNA delivers a combined total nucleic acid fraction; post-extraction enzymatic depletion (DNase I for RNA fraction, RNase A for DNA fraction) separates analytes from the combined eluate.

RNA Stability and Sample Collection

Environmental RNA degrades within seconds to minutes at room temperature without stabilization. Immediately add DNA/RNA Shield to collected soil or fecal samples in the field to inactivate RNases and preserve RNA integrity at ambient temperature for up to 30 days. For aquatic environmental samples, filter immediately onto Sterivex membranes and add DNA/RNA Shield directly to the filter for stabilization during transport.

rRNA Depletion for Metatranscriptomics

Plan for pan-microbial rRNA depletion as a mandatory step between co-extraction and metatranscriptomic library preparation. Residual co-extracted inhibitors from environmental samples can impair enzymatic depletion reactions; an RNA cleanup step with Zymo RNA Clean & Concentrator-5 between extraction and depletion is often needed for soil RNA with A260/A230 below 1.8.

Specifications Context

Target benchmarks for environmental/microbial co-extractions: DNA A260/A280 >= 1.8, DNA fragment size >= 15 kb (for long-read metagenomics) or >= 1 kb (for 16S amplicon); RNA A260/A280 >= 1.8, A260/A230 >= 1.5, RIN >= 6 from DNA/RNA Shield-stabilized samples. A 2023 published method achieved DNA peak size >10-15 kb and RIN >6 from lake bacterioplankton using bead beating and phenol-phase separation combined with AllPrep column purification, in approximately 3 hours for 6-8 samples. Paired metagenomic and metatranscriptomic analysis of soil, gut, and aquatic microbial communities is a major focus of environmental and microbiome research, with ZymoBIOMICS kits cited in NIH-funded studies at institutions including Howard Hughes Medical Institute and Vanderbilt University.

For kit selection guidance, bulk pricing, and protocol optimization for specific environmental matrices, including high-humic soils, aquatic filters, and fecal samples, contact the MBP team.

FAQ

Environmental/microbial DNA/RNA co-extraction kits simultaneously purify genomic DNA and total RNA from complex non-cellular matrices — soil, water, biofilm, sediment, fecal samples, plant material, and environmental swabs — using bead-beating mechanical lysis for unbiased disruption of all microbial cell types in the community, followed by inhibitor-removal purification that delivers both analytes from the same undivided sample for paired metagenomic (DNA) and metatranscriptomic (RNA) sequencing.

Environmental samples present three co-extraction challenges not found in pure cultures: (1) diverse cell wall types — Gram-positive bacteria, Gram-negative bacteria, fungi, and protozoa all require different lysis energies, necessitating bead-beating with mixed bead sizes for unbiased recovery; (2) co-purified PCR inhibitors — humic acids in soil, bile salts in stool, and polyphenols in plant-associated environments inhibit downstream sequencing and PCR reactions; and (3) rapid RNA degradation at room temperature in the absence of stabilization, requiring immediate preservation with DNA/RNA Shield or snap-freezing at collection.

ZymoBIOMICS DNA/RNA co-extraction kits support feces, soil, sediment, water concentrates (from sterivex filtration), plant material, biofilm, swabs, saliva, and body fluids. The ZymoBIOMICS DNA/RNA Miniprep Kit provides spin-column format for 1–24 samples; the ZymoBIOMICS MagBead DNA/RNA Kit processes 96 samples per run on KingFisher, Accuris IsoPure, and AllSheng AutoPure platforms. Both formats include the ZymoBIOMICS lysis system for unbiased Gram-positive, Gram-negative, and fungal cell disruption.

Environmental microbial communities contain diverse organisms with vastly different cell wall rigidities. Without unbiased mechanical lysis using a mix of 0.1 mm beads (optimized for small Gram-negative rods) and 0.5 mm beads (for thick-walled Gram-positive bacteria and fungi), Gram-negative organisms are systematically over-represented in both DNA and RNA fractions, producing community profiles that do not reflect true diversity. The ZymoBIOMICS lysis system uses BashingBeads at both sizes to achieve equal recovery of all community members, as verified by the 8-species ZymoBIOMICS Microbial Community Standard.

After environmental DNA/RNA co-extraction, the RNA fraction must undergo rRNA depletion before RNA-seq library preparation. Environmental microbial RNA is 85–97% ribosomal RNA; without depletion, rRNA sequences dominate sequencing reads and obscure the mRNA signals that reflect active metabolic processes. Pan-microbial or universal rRNA depletion kits (Zymo-Seq RiboFree Total RNA Library Kit, Illumina Ribo-Zero Plus) applied to the co-extracted RNA fraction are the standard approach for metatranscriptomic library preparation.

Both categories use the ZymoBIOMICS lysis system and bead-beating disruption for unbiased microbial community co-extraction. The environmental/microbial category emphasizes complex natural matrices — soil, water, biofilm, sediment — with high inhibitor loads (humic acids) and low microbial biomass per gram, requiring OneStep PCR inhibitor removal technology and potentially reducing input mass to 50–100 mg for high-humic soils. Gut microbiome fecal samples, while biological rather than environmental, are also covered under this category due to their mixed community composition and inhibitor profile.

A 2023 study published in JSME2 (Okazaki et al.) demonstrated a fast co-extraction method for environmental microbial samples combining bead beating and phase separation followed by QIAGEN AllPrep column purification, achieving DNA peak size >10–15 kb and RIN >6 from lake bacterioplankton. A 2024 Microbiology Society evaluation of commercial RNA kits for long-read soil metatranscriptomics identified the QIAGEN RNeasy PowerSoil kit as the top performer for RNA quality from high-humic soils. Both studies confirm that bead-beating and inhibitor removal are non-negotiable steps for environmental nucleic acid co-extraction.

Use the ZymoBIOMICS Microbial Community DNA Standard (D6300) for DNA fraction validation — confirmed by 16S rRNA amplicon sequencing showing all 8 reference organisms (Listeria, Pseudomonas, Bacillus, Enterococcus, E. coli, Salmonella, Saccharomyces, Cryptococcus) at expected proportions. For RNA fraction QC, run the ZymoBIOMICS Microbial Community RNA Standard alongside study samples, with acceptance criteria of Ct within 2 cycles of reference values for representative Gram-positive and Gram-negative targets, and A260/A230 ≥ 1.5 confirming inhibitor removal.

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